1、BSI Standards PublicationBS ISO 24155:2016Hydrometry Hydrometricdata transmission systems Specification of systemrequirementsBS ISO 24155:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 24155:2016.The UK participation in its preparation was entrusted to Te
2、chnicalCommittee CPI/113/1, Hydrometric methods and instrumentation.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplicatio
3、n. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 85085 1ICS 17.120.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on
4、 29 February 2016.Amendments/corrigenda issued since publicationDate Text affectedBS ISO 24155:2016 ISO 2016Hydrometry Hydrometric data transmission systems Specification of system requirementsHydromtrie Systmes de transmission des donnes hydromtriques Spcification des exigences des systmesINTERNATI
5、ONAL STANDARDISO24155First edition2016-02-01Reference numberISO 24155:2016(E)BS ISO 24155:2016ISO 24155:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced
6、or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO c
7、opyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 24155:2016ISO 24155:2016(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Basic requirements 14.1 General
8、. 14.2 Objectives of use 14.3 Functional requirements 14.4 Geographical structures 24.5 Time structures 24.6 Installation conditions 24.7 Considerations for designing 34.7.1 Reliability . 34.7.2 Safety 34.7.3 Data permanence 34.7.4 Maintainability 34.7.5 Operability . 44.7.6 Economy 45 Functional re
9、quirements of system 45.1 General . 45.2 Remote telemetry stations 45.2.1 General 45.2.2 Locations . 45.2.3 Data measurements 45.2.4 Data processing . 55.3 Telemetry system 55.3.1 General 55.3.2 Amount and intervals of data transmission . 55.3.3 Data collection sequence 55.3.4 Communication links .
10、65.3.5 Network architecture . 65.4 Receiving centre . 65.4.1 General 65.4.2 Data verification . 65.4.3 Data processing . 75.4.4 Data storage . 75.4.5 Data display and printing . 75.5 System monitoring . 75.5.1 General 75.5.2 Monitoring of operational status . 75.5.3 Alarming 85.6 Power supply 86 Ope
11、rational requirement 86.1 General . 86.2 Operation and maintenance manual 86.3 Maintenance 9Annex A (informative) Configuration of hydrometric data transmission systems 10Annex B (informative) Functional block diagram of hydrometric data transmission systems 12Annex C (informative) Locations of remo
12、te telemetry stations 14 ISO 2016 All rights reserved iiiContents PageBS ISO 24155:2016ISO 24155:2016(E)Annex D (informative) Interfaces of hydrometric sensors at remote telemetry stations 16Annex E (informative) Data collection sequence 17Annex F (informative) Communication links for data transmiss
13、ion 24Annex G (normative) Design of VHF/UHF radio link 28Annex H (informative) Network architecture 30Annex I (informative) Data repeating methods at a relay station .35Annex J (informative) General power supply for remote telemetry stations 36iv ISO 2016 All rights reservedBS ISO 24155:2016ISO 2415
14、5:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for w
15、hich a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
16、 matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. Thi
17、s document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or
18、all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users a
19、nd does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary in
20、formation .The committee responsible for this document is ISO/TC 113, Hydrometry, Subcommittee SC 5, Instruments, equipment and data management.This first edition of ISO 24155 cancels and replaces ISO/TS 24155:2007. ISO 2016 All rights reserved vBS ISO 24155:2016ISO 24155:2016(E)IntroductionHydromet
21、ric data transmission systems provide data for the day-to-day management of water resources and for warning and forecasting of floods, droughts and conditions affecting water quality and public health. The systems transmit data measured at remote telemetry stations to a receiving centre for further
22、processing.This International Standard defines and standardizes the required specifications of hydrometric data transmission systems. It does not describe the specifications of the equipment and units constituting hydrometric data transmission systems, but does describe the functional performance th
23、at the hydrometric data transmission systems should provide.vi ISO 2016 All rights reservedBS ISO 24155:2016Hydrometry Hydrometric data transmission systems Specification of system requirements1 ScopeThis International Standard specifies the technical requirements that should be considered in design
24、ing and operating hydrometric data transmission systems (HDTS) and also the necessary functions of those systems. The scope of HDTS is shown in Annex A.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applic
25、ation. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 772, Hydrometry Vocabulary and symbolsISO 80000-1, Quantities and units Part 1: GeneralISO/IEC 2382, Information technology Vocabu
26、lary3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 772 and ISO/IEC 2382 apply.4 Basic requirements4.1 GeneralThis Clause specifies the general requirements for designing an HDTS.An HDTS shall be designed to meet the basic requirements, defined herein
27、after, taking into consideration functionality, geographical structures, time structures, installation conditions, reliability, safety, maintainability and economy. The final system specifications should be determined through the process of repetitive discussions among technological specialists in h
28、ydrological and telecommunications fields.The conceptual configuration of an HDTS is shown in Annex A.4.2 Objectives of useAn HDTS shall be designed with a full understanding of the necessity and importance of hydrometric services for appropriate water management in drainage basins, such as needed f
29、or early warning of high flood levels, or low flows in ecologically sensitive rivers, in which this system is to be used.4.3 Functional requirementsThe functional requirements for an HDTS are classified into the following:a) Mandatory requirements: the minimum requirements that an HDTS designer shal
30、l comply with in designing the system. The mandatory requirements include legal requirements, for example, for the site where the system will be installed, and applicable specifications of various standards.INTERNATIONAL STANDARD ISO 24155:2016(E) ISO 2016 All rights reserved 1BS ISO 24155:2016ISO 2
31、4155:2016(E)b) Optional requirements: the functions and methods of implementing them that an HDTS designer can select. The optional requirements include the requirements, such as the data collection sequence and selection of communication links as specified in 5.3.4.An HDTS should be designed to ful
32、ly achieve the mandatory functional requirements, and to meet the optional requirements in full consideration of the users requirements and operational purposes of the system so as to demonstrate the required system functionality.4.4 Geographical structuresThe following geographical structures shall
33、 be determined as a fundamental element of HDTS:a) location(s) of the remote telemetry station(s);b) location(s) of the receiving centre(s);c) location(s) of the relay station(s), if necessary.A remote telemetry station is located at a selected hydrometric observation point. Therefore, remote teleme
34、try stations are distributed over a geographically wide area, including a drainage basin. Remote telemetry stations cannot always be located at optimum hydrological sites, and may be relocated to alternate sites because of geographical problems and difficulties in data transmission.A receiving centr
35、e consists of equipment that receives data from remote telemetry stations for data processing and display. It is located at a site where data and/or information are needed. Therefore, the receiving centre will usually be located within the facility of a user organization. In large drainage basins, r
36、eceiving centres may be distributed at user organizations near a hydrometric-observation point.According to the necessity of the communication medium, a relay station shall be provided in the system.These geographical structures should be considered not only at the time of designing but also for the
37、 future plans.4.5 Time structuresUsually, an HDTS is used on a real-time basis. An HDTS has two time domains: the first domain is the time used in the natural world; the other is the time series in system operation.The basic property of time in system operation is the time when the hydrometric obser
38、vation is made at a gauging point; the gauging intervals and the delay times that are required in data presentation.Usually, sensors at remote telemetry stations continuously measure hydrological phenomena, but the data monitored at the receiving centre are sampled in a time series. Therefore, these
39、 time characteristics and their allowable error range should be determined for the purposes of operation. Details are shown in Annex E.4.6 Installation conditionsThe environmental conditions of the remote telemetry stations may be more severe than those of telecommunication equipment installed indoo
40、rs. Therefore, the following conditions should be considered:a) temperature range and rate of change;b) relative humidity range with no condensation;c) wind velocity;d) lightning protection;e) seismic resistance;2 ISO 2016 All rights reservedBS ISO 24155:2016ISO 24155:2016(E)f) damage due to sea win
41、d, dust, and/or corrosive gases;g) available power supply conditions;h) equipment damage and access during flooding.The environmental conditions of the telecommunications and information processing system equipment to be installed at a receiving centre should also be considered for items a), b), d),
42、 e), and g) above. Details are shown in Annex C.4.7 Considerations for designing4.7.1 ReliabilityAn HDTS is basically designed for continuous operation for its original purpose of use, particularly in the case of heavy rains and floods. Designers shall consider the reliability of equipment and the e
43、ntire system. For the important functions of the system, alternative means or a redundancy of the system should be provided.For example, duplicate communication links can be installed to connect important remote telemetry stations in a gauging area to a receiving centre. A hot-standby system can als
44、o be used for the equipment having important functions. The hydrological data measured by important remote telemetry stations also can be input to a site recorder, and the storage term(s) and period should meet the users requirements.4.7.2 SafetyAn HDTS shall be designed as a safe (fail-safe) system
45、 that can always secure safe system operation in the case of a malfunction of equipment, faulty operation by a user, or a system failure due to any external factor. The fail-safe should prevent such problems from spreading over the entire system.If the malfunction or failure in part of the system or
46、 faulty operation by a user is non-critical, the principal functions of the system should continuously operate because of the importance of hydrometric observation.4.7.3 Data permanenceThe permanence of hydrometric data should be ensured, since these are stored and used for water resources managemen
47、t over a long period.The permanence of data shall be ensured even if some component(s) of the system is replaced or changed. In addition, interface specifications shall be defined for the data transmission system, format and transfer timing between the sensors to be installed in the pre-stage of an
48、HDTS and the information processing system to be installed in the post-stage of an HDTS. Data received at the receiving centre should be saved on reliable storage media.4.7.4 MaintainabilityThe HDTS equipment shall be designed to have a composition that is easy to maintain and repair.The HDTS equipm
49、ent should be designed so that it is easy to check and replace parts, and so that inspections and adjustments can be conducted (easily or) conveniently.Software shall be designed with future maintainability taken into consideration, i.e. for future modifications and/or future improvements. Documentation shall be provided in order to easily carry out necessary procedures for the cases when modifications are required.The HDTS should also include the capability of performing line testing between receiving centre (Rc), via relay stati
