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HJ/T 212-2005

Chinese Standard: 'HJ/T 212-2005'
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Detail Information of HJ/T 212-2005; HJ/T212-2005; HJT 212-2005; HJT212-2005
Description (Translated English): Standard for data communication of pollution emission auto monitoring system
Sector / Industry: Environmental Protection Industry Standard (Recommended)
Classification of Chinese Standard: Z10
Classification of International Standard: 13.020.40
Word Count Estimation: 33,000
Date of Issue: 2005-12-30
Date of Implementation: 2006-02-01
Drafting Organization: SEPA Environmental Emergency and Accident Investigation Center
Administrative Organization: National Environmental Protection Administration
Regulation (derived from): SEPA Notice No. 66 of 2005
Summary: This standard applies to pollution-line automatic monitoring system for automatic monitoring equipment and data exchange between the monitoring center transmission. This standard specifies the data transfer process and system parameter command, interactive commands, data, command and control command data formats and codes defined in the standard system expansion does not limit other information content, the content in the expansion of this standard shall not be used or control command conflict with reserved. According to development of communication technology, timely revision of this standard will be.

HJ/T 212-2005
HJ
ENVIRONMENTAL PROTECTION INDUSTRY STANDRAD
OF THE PEOPLE’S REPUBLIC OF CHINA
Standard for Data Communication of Pollution
Emission Auto Monitoring System
污染源在线自动监控(监测)系统
数据传输标准
ISSUED ON. DECEMBER 30, 2005
IMPLEMENTED ON. FEBRUARY 1, 2006
Issued by. State Environmental Protection Administration
Table of Contents
Forward ... 3 
1 Applicable Scope ... 4 
2 Normative References ... 4 
3 Terms ... 5 
4 System Structure ... 5 
5 Protocol Layer ... 7 
6 Communication Protocol ... 8 
Appendix A ... 19 
Appendix B ... 20 
Appendix C ... 23 
Forward
This Standard was prepared for the purposes of implementing Environmental
Protection Law of the People's Republic of China, guiding the construction of pollution
emission auto monitoring system, regulating data communication, and guaranteeing
the connection among various environmental monitoring instruments, transmission
network, and application software system of environmental protection department.
This Standard specifies the transmission protocol of data communication, control,
alarm and other information BETWEEN the monitoring center (host computer) of
pollution emission auto monitoring system AND auto monitoring equipment (on-site
computer).
This Standard was proposed by Department of Science & Technology and Standards
of the State Environmental Protection Administration.
Chief drafting organizations of this Standard. Environmental Emergency and Accident
Investigation Center of the State Environmental Protection Administration, Information
Center of the State Environmental Protection Administration, China Environmental
Monitoring Center, and Xi'an Jointsky Software Holding Co., Ltd.
This Standard was approved by the State Environmental Protection Administration on
December 30, 2005.
This Standard was implemented since February 1, 2006.
This Standard shall be interpreted by the State Environmental Protection
Administration.
Standard for Data Communication of Pollution
Emission Auto Monitoring System
1 Applicable Scope
This Standard is applicable to data exchange and transmission BETWEEN auto
monitoring equipment AND monitoring center of the pollution emission auto monitoring
system. This Standard specifies the data formats and code definitions of data
transmission process and the system against the parameter command, interactive
command, data command, and control command; this Standard does not limit the
system to expand other information contents; when the contents are expanded, they
shall not conflict with the control command used or reserved in this Standard.
This Standard shall be revised in proper time as per the development of
communication technology.
2 Normative References
The following normative documents contain provisions which, through reference in this
Standard, constitute provisions of this Standard, and are as valid as this Standard.
GB/T 16706-1996 Codes for Environmental Pollution Source
YD/T 1093-2000 900/1800MHz TDMA Digital Cellular Mobile Communication
Network Technical Specification for General Packet Radio Service (GPRS)
Tunneling Protocol
YD/T 1323-2004 Technical Requirements for Access Network - Asymmetric
Digital Subscriber Line (ADSL)
YD/T 1334-2004 Technical Requirements of Intelligent Peripheral (IP) Equipment
for Wireless Intelligent Network (WIN) Phase 2 in 800MHz CDMA Digital Cellular
Mobile Telecommunication Network
EIA RS-232C Interface between Data Terminal Equipment and Data
Communication Equipment Employing Serial Binary Data Interchange
3 Terms
3.1 Pollution emission auto monitoring system
It consists of auto monitoring instrument and monitoring center that implement on-line
auto monitoring against the main pollutants’ emission from the pollution source; it is
called system for short in this Standard.
3.2 Monitoring center
It is the system installed in environmental protection departments at all levels, has the
permission to connect auto monitoring equipment through transmission line, and
conducts the data receiving and processing against the inquiry, control and other
commands specified in this Standard, including computer information terminal
equipment, computer software etc.; it is called host computer for short in this Standard.
3.3 Auto monitoring equipment
It indicates single or multiple equipment and facilities installed on discharge outlet of
pollution source, used for monitoring the discharge situation of pollution source, and
finishing data communication and transmission with host computer; including pollutant
monitoring instrument, flow amount (velocity) meter, pollution control facility recorder,
data acquisition and transmission instrument, etc., it is the integral part of the pollution
control facilities. It is called on-site computer for short in this Standard.
3.4 Data acquisition and transmission instrument
It indicates single-chip computer, industrial personal computer, embedded computer,
embedded programmable automation controller (PAC), programmable controller etc.,
which acquire data from various types of monitoring instruments, finish data storage,
and realize the data communication and transmission with host computer.
4 System Structure
Pollution emission auto monitoring system can be divided into three levels, such as
on-site computer, transmission network and host computer from the bottom upwards.
Host computer realizes data exchange and issues or responds commands through the
transmission network and on-site computer.
Auto monitoring equipment is constituted by the following two methods.
(1) One set of on-site computer combines auto monitoring, storing, communication
and transmission functions, which are interactive through transmission network
and host computer.
established, the protocol on the entire application layer is irrelevant to the specific
transmission network. This Standard reflects the independence of communication
media.
6 Communication Protocol
6.1 Respond mode
Complete command consists of the initiation of requesting party and response of
responder, and the specific steps are as follows.
(1) The requesting party sends a query command to the responder.
(2) The responder responds after receiving the query command, and the
connection is considered to be established after the reception of response by
the requesting party.
(3) The responder performs the query operation.
(4) The responder informs the requesting party that the query operation has been
finished; if there is no response, then it shall be treated as overtime operation.
(5) The command is finished.
6.2 Timeout retransmission mechanism
6.2.1 Timeout for query response
 If one query command is issued and does not receive response within the
specified time, then it is considered timeout.
 Retransmit after timeout, if response is not received after the specified retransmit
times, then the communication is thought not available, and the communication
is over.
 The timeout period can be customized as per the specific communication mode
and task nature.
 The retransmission times after timeout can be customized as per the specific
communication mode and task nature.
6.2.2 Performance timeout
If the requesting party fails to receive the return data or command performance result
within the specified time after receiving the query response (one sub-package), it is
considered timeout; if command fails to be performed, then it is ended.
xxx-ZsAvg
Average conversion value
within specified time of
pollutant
0~9 N14.2 10.11
xxx-ZsMax
Maximum conversion value
within specified time of
pollutant
0~9 N14.2 10.11
xxx-Flag Monitoring pollutant real-time data flag A~Z C1
As for pollution source (P. power failure; F.
emission source outage; C. check; M. maintenance;
T. test; L. limit; D. default; S. setting value; N.
Normal )
As for air test station (0. calibration number; 1.
meteorological parameters; 2. abnormal data; 3.
normal data)
[Empty row]
xxx-Cou A......
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