GB/T 34428.5-2017Communication rules of the devices of surveillance and control system for expressway—Part 5: Tunnel environment detector (English PDF)
高速公路监控设施通信规程 第5部分: 隧道环境检测器
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 29, 2017
Implementation date
April 1, 2018
Scope
GB/T 34428.5-2017 is the English-translated version of 高速公路监控设施通信规程 第5部分: 隧道环境检测器.
GB/T 34428.5-2017 is the Chinese standard "Communication rules of the devices of surveillance and control system for expressway—Part 5: Tunnel environment detector".
Its scope clause reads: This section GB/T 34428 specifies the terms and definitions of tunnel environmental detectors used for highway monitoring and communication procedures.
This section applies to highway monitoring system in the host computer and tunnel environment detector data communication between the process. Its clauses include terms and definitions.
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Document preview — GB/T 34428.5-2017
National Standard of the People's Republic of China
- ICS
- 93.080.30
- Classification
- R 87
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 Tunnel environmental indicators
- 3.2 Carbon monoxide concentration of carbon monoxide
- 3.3 Visibility attenuation coefficient
- 3.4 Luminance
- 3.5 Windspeedanddirection
1 Scope
This section GB/T 34428 specifies the terms and definitions of tunnel environmental detectors used for highway monitoring and communication procedures.
This section applies to highway monitoring system in the host computer and tunnel environment detector data communication between the process.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
Information technology - Information exchange - Seven - digit coded character set
GB/T 2311 Information technology character code structure and expansion technology
Information processing - Eight bit code structure and coding rules for information exchange
GB/T 34428.1-2017 Expressway monitoring facilities communications protocols Part 1. General procedures
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Tunnel environmental indicators
In this section, environmental indicators refer to the environmental parameters used for expressway tunnel traffic operations, including. carbon monoxide concentration, visibility (smoke
Fog concentration), brightness, wind speed and direction.
3.2 Carbon monoxide concentration of carbon monoxide
Carbon monoxide concentration in the air per unit volume of CO, in units of 10-6.
3.3 Visibility attenuation coefficient
VI mainly reflects the concentration of smoke or dust in the environment, in units of 1/m (1/m).
3.4 Luminance
The luminous intensity of a certain point of the surface of the light source in a given direction and the orthographic projection surface of the same on a plane perpendicular to the direction
Plot ratio, in candela per square meter (cd/m2). Usually in the tunnel and tunnel each installed a light intensity sensor.
3.5 Windspeedanddirection
TW The horizontal distance traveled by the air per unit of time in meters per second (m/s). The measured value is expressed as a positive/negative wind direction.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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GB/T 34428.6-2017 — Communication rules of the devices of surveillance and control system for expressway - Part 6: Wall map
GB/T 34428.4-2017 — Communication rules of the devices of surveillance and control system for expressway—Part 4: Weather detector
GB/T 34428.3-2017 — Communication rules of the devices of surveillance and control system for expressway—Part 3: LED changeable message sign
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