GNSS system for operating vehicles -
Technical specifications for vehicle video terminal
1 Scope
This standard specifies the general requirements, functional requirements, performance requirements, installation requirements and test methods for vehicle video terminal of GNSS system for operating vehicles.
This standard is applicable to the design, manufacture, inspection and installation of the host, camera and other external equipment of vehicle video terminal of GNSS system for operating vehicles.
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 2423.5 Environmental testing for electric and electronic products - Part 2: Test methods - Test Ea and guidance: Shock
GB/T 2423.10 Environmental testing for electric and electronic products－Part 2: Test methods Fc and guidance: Vibration (sinusoidal)
GB/T 15865 Video cameras (PAL/SECAM/NTSC)－Methods of measurement－Part 1: Non-broadcast single-sensor cameras
GB/T 19056-2012 Vehicle travelling data recorder
GB/T 20090.2 Information technology - Advanced coding of audio and video - Part2: Video
GB 20815-2006 Digital video record equipment of video surveillance system in security & protection systems
GB/T 25724 Technical specification of surveillance video and audio coding
GJB 367A General specifications for military communication equipment
JT/T 325-2013 Type dividing and class rating for commercial motor-vehicles of passenger transport
JT/T 794-2011 GNSS system for operating vehicles - Technical specification for vehicle terminals
ISO/IEC 14496-10 Information technology - Coding of audio-visual objects - Part 10: Advanced video coding
ISO/IEC 23008-2 Information technology - High efficiency coding and media delivery in heterogeneous environments – Part 2: High efficiency video coding
ITU-T H.264-2005 Advanced video coding for generic audio visual service
ITU-T H.265-2014 High efficiency video coding
3 Terms and definitions
3.1 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1.1
vehicle video terminal
vehicle terminal installed on the vehicle, used for collecting audio and video information of the vehicle environment and having the function of satellite positioning
3.1.2
main storage device
storage medium for storing all data including audio and video data and positioning data, and its protective device
3.1.3
storage device for disaster backup
storage medium, together with protective device, independent of the main storage device and used to save important data in special states
3.1.4
particular alarm
specific alarms affecting vehicle safety such as emergency alarm and collision rollover alarm
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
AVI: Audio Video Interleaved
AVS: Audio Video Coding Standard
CIF: Common Intermediate Format
FDD-LTE: Frequency Division Duplex
ICCID: Integrate Circuit Card Identity
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
3.1 Terms and definitions
3.2 Abbreviations
4 General requirements
4.1 Basic requirements
4.2 Terminal composition
5 Functional requirements
5.1 Basic requirements
5.2 Requirements for video and audio recording
5.3 Requirements for local retrieval, playback and data backup
5.4 Alarm requirements
5.5 Data security requirements
5.6 Requirements for network function
5.7 Image analysis requirements
5.8 Requirements for function of reading SIM card number
5.9 Requirements for function of setting TCP linking time-out value
5.10 Technical requirements for camera
5.11 Technical requirements for pick-up
6 Performance requirements
6.1 Requirements for electrical performance
6.2 Requirements for environmental adaptability
6.3 Requirements for electromagnetic compatibility
7 Installation requirements
8 Test methods
8.1 Test conditions
8.2 Function test
8.3 Electrical performance test
8.4 Environmental adaptability test
8.5 Electromagnetic compatibility test
Annex A (Normative) Interface form of video terminal analog camera video and audio connector and connector of storage device for disaster backup
Annex B (Normative) Minimum performance requirements and test methods for disaster protection of storage device for disaster backup
Annex C (Normative) Mechanical environment adaptability test under working state in case of main storage device being hard disk
1 范围
本标准规定了道路运输车辆卫星定位系统车载视频终端的一般要求、功能要求、性能要求、安装要求和试验方法。
本标准适用于道路运输车辆卫星定位系统车载视频终端主机、摄像头及其他外部设备的设计、制造、检验和安装。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是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 2423.5 电工电子产品环境试验 第2部分：试验方法 试验Ea和导则：冲击
GB／T 2423.10 电工电子产品环境试验 第2部分：试验方法 试验Fc和导则：振动(正弦)
GB／T 15865 摄像机(PAL／SECAM／NTSC)测量方法 第1部分：非广播单传感器摄像机
GB／T 19056-201 2汽车行驶记录仪
GB／T 20090.2 信息技术 先进音视频编码 第2部分：视频
GB 20815-2006 视频安防监控数字录像设备
GB／T 25724 安全防范监控数字视音频编解码技术标准
GJB 367A 军用通信设备通用规范
JT／T 325-2013 营运客车类型划分及等级评定
JT／T 794-2011 道路运输车辆卫星定位系统 车载终端技术要求
ISO／IEC 14496-10 信息技术 视听对象编码 第10部分：高级视频编码(Information technology—Coding of audio-visual objects—Part 10：Advanced video coding)
ISO／IEC 23008-2 信息技术 混杂环境中的高效编码和媒体传递 第2部分：高效视频编码(Information technology—High efficiency coding and media delivery in heteroge-neous environments—Part2：High efficiency video coding)
ITU-TH.264-2005 通用音视频服务的先进视频编码(Advanced video coding for generic audio visual service)
ITU-TH.265-2014 高效率视频编码(High efficiency video coding)
3 术语和定义、缩略语
3.1 术语和定义
下列术语和定义适用于本文件。
3.1.1
车载视频终端 vehicle video terminal
安装在车辆上负责采集车辆环境的音频和视频信息并具备卫星定位功能的车载终端。
3.1.2
主存储器 main storage device
用于存储包括音视频数据、定位数据等所有数据的存储介质及防护装置。
3.1.3
灾备存储装置 storage device for disaster backup
独立于主存储器、用于特殊状态下保存重要数据的存储介质及防护装置。
3.1.4
特殊报警 particular alarm
紧急报警、碰撞侧翻报警等影响车辆安全的特定报警。
3.2 缩略语
下列缩略语适用于本文件。
AVI：音频视频交错格式(Audio Video Interleaved)
AVS：音视频编码标准(Audio Video Coding Standard)
CIF：通用影像传输格式(Common Intermediate Format)
FDD-LTE：频分双工长期演进(Frequency Division Duplex)
ICCID：集成电路卡识别码(Integrate Circuit Card Identity)
ITU：国际电信联盟(International Telecommunication Union)
MPEG：动态图像专家组(Moving Pictures Experts Group)
MP4：MPEG-4多媒体文件格式(MPEG-4 Part 14)
SIM：客户识别模块(Subscriber Identity Module)
TCP：传输控制协议(Transmission Control Protocol)
TD-LTE：时分长期演进(Time Division Long Term Evolution)
TVL：电视行(Transmission Line Pulsing)
USB：通用串行总线(Universal Serial Bus)
WIFI：无线保真(Wireless-Fidelity)
4 一般要求
4.1 基本要求
终端的外观、铭牌、文字、图形、标志、材质和机壳防护应符合JT／T 794-2011中4.2～4.6的规定。
4.2 终端组成
4.2.1 主机
主机应符合JT／T 794-2011中4.1.1的规定，并应包含以下模块或接口：
a) 音视频编解码模块；
b) 音视频信号输入接口；
c) 音视频信号输出模块或接口；
d) 为摄像机、拾音器供电的电源模块；
e) 连接可装卸的数据存储器接口；
f) 实时镜像录像用的灾备存储装置接口；
g) USB Host 2.0或以上标准接口。
主机宜包含以太网接口和WIFI模块。
4.2.2 外部设备
外部设备应符合JT／T 794-2011中4.1.2的规定，并应包含以下装置：
a) 车载摄像机；
b) 拾音器；
c) 可装卸的主存储器。
实时镜像灾备存储装置、乘客计数装置和驾驶行为分析装置为可选外部设备。
4.2.3 接口形态
视频终端音视频连接器接口形态，见A.1。
灾备存储装置的连接器接口形态，见A.2。
5 功能要求
5.1 基本要求
