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Specification for the Installation of Read-write Equipment of the Electronic Identification of Motor Vehicles
1 Scope
This standard specifies installation and acceptance of read-write equipment of the electronic identification of stationary motor vehicles.
This standard is applicable to installation and acceptance of read-write equipment of the electronic identification of stationary motor 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 35786-2017 General Specification for Read-write Equipment of the Electronic Identification of Motor Vehicles
GB/T 50198-2011 Technical Code for Project of Civil Closed Circuit Monitoring Television System
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 35786-2017 apply.
4 Installation
4.1 Installation Environment
Installation position of read-write equipment shall meet the following requirements:
a) It shall be kept away from interference of strong electromagnetic field;
b) With 50m from the installation point, field strength of other 920MHz~925MHz wireless radiofrequency signals shall be lower than 7μV/m;
c) Radiofrequency signals of read-write equipment shall not be kept out and other traffic facilities shall not be influenced after installation;
d) Read-write equipment and installation member bars shall not intrude into clearance limit range of road traffic.
4.2 Installation Requirements
Installation of read-write equipment shall meet the following requirements:
a) Read-write unit and antenna unit shall be firmly installed and normal operation of read-write equipment shall not be influenced due to vibration.
b) Installed hardware equipment shall be provided with anti-theft measures;
c) Construction shall be carried out according to the requirements of 4.3 in GB 50198-2011.
4.3 Installation Mode
Installation modes of read-write equipment include cantilever type, portal type, column type and vehicle-amounted type, which are detailed in Annex A.
4.4 Installation Quantity
Installation quantity of read-write unit and antenna unit for read-write equipment shall be able to meet the actual management requirements. An antenna unit or integrated read-write equipment shall be installed right above each lane according to lane identification or controlled road section.
4.5 Installation Position
Installation position of read-write equipment in outdoor environment shall meet the following requirements:
a) Under the condition that the length of feeder unit is permissible, read-write unit of split read-write equipment should be installed at vertical bar; if the length of feeder unit is not permissible, read-write unit shall be installed at cross bar which is close to the vertical bar as possible.
b) For antenna unit of split read-write equipment or integrated read-write equipment to be installed above the road, installation position of shall be right above identification road section or center line of identification lane as close as possible.
c) Where antenna unit of split read-write equipment or integrated read-write equipment is installed at roadside, included angle of horizontal projection of antenna unit perpendicular line and traveling direction should not be greater than 30°, which is detailed in Annex B.
4.6 Installation Height
Installation height of read-write equipment in outdoor environment shall meet the following requirements:
a) Where being installed at vertical bar, the clear height should be greater than or equal to 2.5m;
b) Where being installed at cross bar, the clear height shall be greater than or equal to 5.5m;
c) Where being installed at bridge, tunnel, culvert and the like, the clear height shall not be less than height limit for the road;
d) Clear height of antenna unit should not be greater than 7m.
4.7 Feeder Unit
Bending radius of feeder unit of split read-write equipment shall be more than 15 times outside diameter of feeder cable; it shall be round, smooth and uniform at the bend; repeated bending is not allowed; the feeder shall be free from wrapping and twisting and the laying shall be neat, straight and flat.
4.8 Member Bar
Member bar installation shall meet the following requirements:
a) Circular or multi-angle variable cross-section profile should be used; retention flange plate should be welded at connection end of vertical bar and cross bar; and at least 4 reinforcing ribs shall be welded uniformly between flange plate and the bar;
b) Wiring holes are reserved on the vertical bar 0.3m to 1.0m above the ground where waterproof sill, cover plate and set screw are equipped;
c) Outlet hole is reserved at installation position of read-write unit and antenna unit, where rubber sheath and cable backwater bent hook are equipped;
d) Plastic or antiseptic metal water-proof pipe cap shall be installed at top of vertical bar and retention flange plate shall be welded at bottom of vertical bar with at least 4 reinforcing ribs welded between flange plate and the bar uniformly;
e) Protective earthing resistance shall be less than 10Ω;
f) During installation, the bar shall be vertical and inclination shall not exceed ±0.5%.
4.9 Other Requirements
4.9.1 Lightning protection
Earth terminal of read-write equipment shall be reliably connected with the bar.
4.9.2 Waterproof and anti-corrosion
For exposed cable interface, waterproof and anti-corrosion treatment shall be carried out.
4.9.3 Information sign
Information sign shall be arranged correspondingly during installation of read-write equipment, which is detailed in Annex C.
4.9.4 Wind resistance
For structure design of each read-write equipment unit and information sign, wind-resistant wind speed shall be greater than 22m/s on open flat ground and at the height of 5.5m.
5 Acceptance
5.1 Site Test Conditions for Acceptance
Unless otherwise stipulated, the following conditions shall be met during site test of read-write equipment for acceptance:
a) The weather is fine, without the influence of rain, snow, fog, etc.;
b) Single tested vehicle is adopted for test and common vehicle model during read-write equipment monitoring the road should be selected as tested vehicle;
c) During test, traveling track of tested vehicle shall be at left side, in the middle and right side of identification lane respectively and vehicle body shall not go beyond the test lane.
d) Security measures such as isolation and protection shall be arranged at test site.
Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Installation 4.1 Installation Environment 4.2 Installation Requirements 4.3 Installation Mode 4.4 Installation Quantity 4.5 Installation Position 4.6 Installation Height 4.7 Feeder Unit 4.8 Member Bar 4.9 Other Requirements 5 Acceptance 5.1 Site Test Conditions for Acceptance 5.2 Installation Acceptance 5.3 Inspection of Function Compliance Annex A (Informative) Schematic Diagram for Installation Mode Annex B (Informative) Schematic Diagram for Installation Position Annex C (Informative) Information Sign Bibliography
ICS 35.240.15 T 35
中华人民共和国国家标准
GB/T 35785-2017
机动车电子标识读写设备安装规范
Specification for teh installation of read-write equipment of the electronic identification of motor vehicles
4.1 安装环境 读写设备安装位置应符合以下要求： a) 避开强电磁场的干扰； b) 安装点50m范围内的其他920MHz～925MHz无线射频信号场强低于7μV/m； c) 安装后读写设备射频信号不被遮挡，不影响其他交通设施； d) 读写设备及安装杆件不侵入道路通行净空限界范围。 4.2 安装要求 读写设备安装应符合以下要求： a) 读写单元和天线单元安装牢固，不得因振动影响读写设备的正常工作； b) 安装的硬件设备具有防盗措施； c) 按GB 50198-2011中4.3的要求进行施工。
4.5 安装位置 室外环境下读写设备安装位置应符合以下要求： a) 在馈线单元长度允许情况下，分体式读写设备的读写单元宜安装在立杆上；馈线单元长度不允许时，读写单元尽可能安装在靠近立杆的横杆位置上； b) 分体式读写设备的天线单元或一体读写设备安装在道路上方的，安装位置尽可能靠近识别路段或识别车道中心线正上方位置； c) 分体式读写设备的天线单位或一体式读写设备安装在路侧时，天线单元法线水平投影与行车方向夹角不宜大于30°，参见附录B。
4.6 安装高度 室外环境下读写设备安装高度应符合以下要求： a) 安装在立杆上时，净空高度宜大于等于2.5m； b) 安装在横杆上时，净空高度大于等于5.5m； c) 安装于桥梁、隧道、涵洞等时，净空高度不得低于道路限高高度； d) 天线单元净空高度不宜大于7m。
4.8 杆件 安装杆件应符合以下要求： a) 宜使用圆形或多棱形的变截面型材制作，立杆与横杆连接端宜焊接固定法兰盘，法兰盘与杆体之间均匀焊接至少4个加强筋； b) 立杆距地面0.3m～1.0m处留有穿线孔，并配备防水檐、盖板及固定螺钉； c) 读写单元及天线单元安装位置留有出线孔，并配备橡胶护套、电缆线回水弯挂钩； d) 立杆顶部安装塑料或经防腐处理的金属防水管帽，底部焊接固定法兰盘，法兰盘与杆体之间均匀焊接至少4个加强筋； e) 保护接地电阻小于10Ω； f) 安装时杆体应垂直，倾斜度不得超过±0.5%.
5 验收 5.1 验收现场试验条件 除有约定外，读写设备验收现场试验时满足以下条件： a) 天气晴朗，无雨、雪、雾等影响； b) 采用单辆试验车进行，试验车宜选用读写设备监控道路常见车型； c) 试验时，试验车行驶轨迹应分别在识读车道的左侧、中间、右侧，车身不应超出试验车道； d) 试验现场应设置隔离、防护等安全措施。
