Public swimming pools - Computer vision systems for the detection of drowning accidents in swimming pools - Safety requirements and test methods (ISO 20380:2017)

This European standard should describe the general safety requirements and test methods for computer vision systems used
to detect drowning accidents in swimming pools.
This standard would not apply to the systems used in domestic swimming pools and pools with a surface area of less than
150 m2.

Öffentliche Schwimmbäder - Computererkennungssysteme für das Erkennen von Ertrinkungsunfällen in Schwimmbädern - Sicherheitstechnische Anforderungen und Prüfverfahren (ISO 20380:2017)

Diese Norm beschreibt die Mindestanforderungen an Betrieb, Leistung und Sicherheit von Computersystemen für die Erkennung von Ertrinkungsunfällen in Schwimmbädern und entsprechende Prüfverfahren.
Diese Norm gilt nicht für Systeme, die in privat genutzten Schwimmbädern eingesetzt werden, und Becken mit einer Oberfläche von weniger als 150 m2.

Piscines publiques - Systèmes de vision par ordinateur pour la détection de noyades en piscines - Exigences de sécurité et méthodes d'essai (ISO 20380:2017)

L'ISO 20380 :2017 décrit les exigences minimales de fonctionnement, de performance et de sécurité et les méthodes d'essai des systèmes de vision par ordinateur utilisés pour la détection des noyades.
L'ISO 20380 :2017 ne s'applique pas aux systèmes utilisés dans les piscines à usage domestique et dans les bassins dont la surface est inférieure à 150 m2.

Javna kopališča - Računalniški sistemi za odkrivanje primerov utopitve v bazenih kopališč - Varnostne zahteve in preskusne metode (ISO 20380:2017)

Ta evropski standard bi moral opisovati splošne varnostne zahteve in preskusne metode za računalniške sisteme za odkrivanje primerov utopitve v bazenih kopališč. Ta standard se ne uporablja za sisteme, ki se uporabljajo v domačih bazenih in bazenih s površino manjšo od 150 m2.

General Information

Status
Published
Public Enquiry End Date
19-Jan-2017
Publication Date
21-Jan-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Jan-2018
Due Date
12-Mar-2018
Completion Date
22-Jan-2018

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SLOVENSKI STANDARD
SIST EN ISO 20380:2018
01-februar-2018
-DYQDNRSDOLãþD5DþXQDOQLãNLVLVWHPL]DRGNULYDQMHSULPHURYXWRSLWYHYED]HQLK
NRSDOLãþ9DUQRVWQH]DKWHYHLQSUHVNXVQHPHWRGH ,62
Public swimming pools - Computer vision systems for the detection of drowning

accidents in swimming pools - Safety requirements and test methods (ISO 20380:2017)

Öffentliche Schwimmbäder - Computererkennungssysteme für das Erkennen von
Ertrinkungsunfällen in Schwimmbädern - Sicherheitstechnische Anforderungen und
Prüfverfahren (ISO 20380:2017)

Piscines publiques - Systèmes de vision par ordinateur pour la détection de noyades en

piscines - Exigences de sécurité et méthodes d'essai (ISO 20380:2017)
Ta slovenski standard je istoveten z: EN ISO 20380:2017
ICS:
35.240.99 8SRUDEQLãNHUHãLWYH,7QD IT applications in other fields
GUXJLKSRGURþMLK
97.220.10 Športni objekti Sports facilities
SIST EN ISO 20380:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 20380:2018
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SIST EN ISO 20380:2018
EN ISO 20380
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2017
EUROPÄISCHE NORM
ICS 35.240.99; 97.220.10
English Version
Public swimming pools - Computer vision systems for the
detection of drowning accidents in swimming pools -
Safety requirements and test methods (ISO 20380:2017)

Piscines publiques - Systèmes de vision par ordinateur Öffentliche Schwimmbäder -

pour la détection de noyades en piscines - Exigences de Computererkennungssysteme für das Erkennen von

sécurité et méthodes d'essai (ISO 20380:2017) Ertrinkungsunfällen in Schwimmbädern -

Sicherheitstechnische Anforderungen und
Prüfverfahren (ISO 20380:2017)
This European Standard was approved by CEN on 9 October 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20380:2017 E

worldwide for CEN national Members.
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SIST EN ISO 20380:2018
EN ISO 20380:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 20380:2018
EN ISO 20380:2017 (E)
European foreword

This document (EN ISO 20380:2017) has been prepared by Technical Committee ISO/TC 83 "Sports and

other recreational facilities and equipment" in collaboration with Technical Committee CEN/TC 136

“Sports, playground and other recreational facilities and equipment” the secretariat of which is held by

DIN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by June 2018, and conflicting national standards shall be

withdrawn at the latest by June 2018.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 20380:2017 has been approved by CEN as EN ISO 20380:2017 without any modification.

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SIST EN ISO 20380:2018
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SIST EN ISO 20380:2018
INTERNATIONAL ISO
STANDARD 20380
First edition
2017-11
Public swimming pools — Computer
vision systems for the detection of
drowning accidents in swimming
pools — Safety requirements and
test methods
Piscines publiques — Systèmes de vision par ordinateur pour
la détection de noyades en piscines — Exigences de sécurité et
méthodes d'essai
Reference number
ISO 20380:2017(E)
ISO 2017
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SIST EN ISO 20380:2018
ISO 20380:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced 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 ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 20380:2018
ISO 20380:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Requirements .......................................................................................................................................................................................................... 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Technical study ....................................................................................................................................................................................... 2

4.3 Performance requirements .......................................................................................................................................................... 3

4.3.1 Alarm set off time ............................................................................................................................................................ 3

4.3.2 Areas covered ..................................................................................................................................................................... 3

4.3.3 Detection performance ........................................................................................................................................... .... 3

4.3.4 False alarm rates .............................................................................................................................................................. 4

4.4 Data communication and management ............................................................................................................................. 4

4.4.1 General...................................................................................................................................................................................... 4

4.4.2 Alarm data ............................................................................................................................................................................. 4

4.4.3 Operational data ............................................................................................................................................................... 4

5 Test methods ............................................................................................................................................................................................................. 5

5.1 General ........................................................................................................................................................................................................... 5

5.2 Non-detection test................................................................................................................................................................................ 5

5.2.1 Non-detection test preparation .......................................................................................................................... 5

5.2.2 Non-detection test procedure .............................................................................................................................. 5

5.3 Detection test ........................................................................................................................................................................................... 6

5.3.1 General...................................................................................................................................................................................... 6

5.3.2 Detection test conditions .......................................................................................................................................... 6

5.3.3 Test preparation ............................................................................................................................................................... 7

5.3.4 Distribution of detection measurements during the test ............................................................. 7

5.3.5 Detection test measurement protocol ........................................................................................................... 9

5.4 Test report ................................................................................................................................................................................................10

6 Regular testing .....................................................................................................................................................................................................11

6.1 Daily testing ............................................................................................................................................................................................11

6.2 Half-yearly testing .............................................................................................................................................................................11

7 Trained staff manual .....................................................................................................................................................................................12

8 Maintenance ...........................................................................................................................................................................................................12

Annex A (informative) Typical rescue scenario .....................................................................................................................................13

Bibliography .............................................................................................................................................................................................................................15

© ISO 2017 – All rights reserved iii
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SIST EN ISO 20380:2018
ISO 20380:2017(E)
Foreword

ISO (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 which 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 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. This 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 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 and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 83, Sports and other recreational facilities

and equipment.
iv © ISO 2017 – All rights reserved
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SIST EN ISO 20380:2018
ISO 20380:2017(E)
Introduction

Currently available epidemiological data show that despite the presence of lifeguards, drowning

[which, according to the World Health Organization (WHO), is the process of experiencing respiratory

impairment from submersion/immersion in liquid] remains in public swimming pools with entrance

[2][11]

fees. A certain number of studies together demonstrate that for several reasons (physiological,

cognitive, architectural, organizational, etc.), lifeguards may sometimes find themselves in difficulty

when watching over swimmers, knowing that a potential risk of a drowning accident may occur.

It is important to bear in mind that a lifeguard can supervise and inform swimmers to help ensure their

safety as well as anticipate and intervene early to prevent an accident from occurring.

Computer vision systems do not save people from drowning, as saving a drowning person necessarily

requires human intervention.

Installation and use of computer vision systems cannot serve as a reason to reduce human monitoring

of swimming pools, unless a robust risk assessment does indicate this is possible without compromising

safety, with reference to applicable national regulations, if any.

In addition to the safety organization, these tools are solely for use by a competent person, who received

prior training in the operational performances of these systems in accordance with the manufacturers'

and the swimming pool operators' instructions.

Not all possible drowning accidents can be detected by the systems described in this document, e.g.

persons floating on or just below the water surface. Although the current state-of-the-art does not

allow 100 % effectiveness, for several years, these technologies have proved their worth worldwide, by

regularly helping lifeguards to identify potential drowning accidents that they had not observed.

While it is possible to retrofit this type of equipment to an existing pool, consideration of its introduction

is best at the pool design stage.

In order to really enhance the drowning prevention in swimming pools, computer vision systems are

designed to:
— scan continuously and with redundancy the pool basin;

— detect mathematically a solid mass, without trajectory, lying at the pool basin bottom;

— trigger electronically an alarm after the detection;

— limit false alarms by automatically differentiating a solid mass from light and shadow projections

on the texture of the pool basin and by discriminating, without human intervention, a motionless

solid mass above and below the water surface.
A trained competent person cannot completely rely on such a system because:

— the system has limitations, which are covered in training for using the system;

— the system’s performance can be compromised by various factors, which the trained competent

person would be informed of automatically in real time.

Computer vision systems are foreseen to support the competent person in detecting drowning accidents

at the pool basin bottom and reacting faster by saving precious seconds.

The International Organization for Standardization (ISO) draws attention to the fact that it is claimed

that compliance with this document may involve the use of patents concerning computer vision

technologies for the detection of drowning accidents in swimming pools, given in 3.1.

ISO takes no position concerning the evidence, validity and scope of these patent rights.

The holder of these patent rights has assured ISO that he/she is willing to negotiate licences under

reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this

© ISO 2017 – All rights reserved v
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SIST EN ISO 20380:2018
ISO 20380:2017(E)

respect, the statement of the holder of these patent rights is registered with ISO. Information may be

obtained from:
POSÉIDON – MG INTERNATIONAL – MAYTRONICS FRANCE
3, rue Nationale
92100 – Boulogne Billancourt
France

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights other than those identified above. ISO shall not be held responsible for identifying any or

all such patent rights.
vi © ISO 2017 – All rights reserved
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SIST EN ISO 20380:2018
INTERNATIONAL STANDARD ISO 20380:2017(E)
Public swimming pools — Computer vision systems for
the detection of drowning accidents in swimming pools —
Safety requirements and test methods
1 Scope

This document describes the minimum operational, performance and safety requirements and test

methods for computer vision systems used to detect drowning accidents.

This document does not apply to the systems used in domestic swimming pools and pool basins with a

surface area of less than 150 m .
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
computer vision system for the detection of drowning accidents

automated system including means for digitizing series of images of people in the pool basin (3.11),

means for comparing and analysing digitized images and decision means for setting off and sending an

alarm (3.5) to trained staff (3.7) when a detection (3.3) occurs
3.2
drowning

process of experiencing respiratory impairment from submersion/immersion in liquid

Note 1 to entry: Outcomes are classified as death, morbidity and no morbidity.
[SOURCE: World Health Organization]
3.3
detection

recognition of a total and prolonged immersion at the bottom of the pool basin (3.11) of a stationary

solid mass such as a person or object
3.4
monitoring

active and constant observation of people in the pool basin (3.11) with the aim of preventing drowning

(3.2) risks
3.5
alarm

notification by the computer vision system of a detection (3.3) to the identified trained staff (3.7)

© ISO 2017 – All rights reserved 1
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SIST EN ISO 20380:2018
ISO 20380:2017(E)
3.6
competent person

designated individual who has acquired through training, qualifications or experience, or a combination

of these, the knowledge and skills enabling that person to perform a specified task

3.7
trained staff

on-duty competent person (3.6), in charge of surveillance and trained in the use of the computer vision

system for the detection of drowning accidents (3.1), and with access rights to the system

3.8
false alarm
alarm (3.5) set off for reasons other than detection (3.3)
3.9
alarm set off time

time from the moment that a solid mass is fully immersed, on the pool bottom and stationary, until the

alarm (3.5) is activated
3.10
swimming pool

facility, with one or more water areas, intended for swimming, leisure or other water-based physical

activities
3.11
pool basin
water tank where water-related activities can take place
4 Requirements
4.1 General

Computer vision systems are designed to complement lifeguards or trained staff and are not designed

to reduce lifeguard supervision or staffing levels.

The equipment and materials used shall be suitable for the environment in which their installation is

intended (immersion depth, very high hygrometry, chemically aggressive atmosphere, etc.).

Equipment and materials installed in a ≥60 % hygrometry environment shall be at least IP65 (degrees

of protection provided by enclosures). Equipment and materials for use in a submerged environment

shall be IP68 (see IEC 60529).
For information, a typical rescue scenario is available in Annex A.
4.2 Technical study

Prior to any installation of a computer vision system for the detection of drowning accidents, a technical

study shall be carried out by the supplier in consultation with or based on information provided by the

swimming pool's owner/operator. Depending on the computer vision system proposed, the technical

study is used to quantify and to position the equipment making up the system, such as cameras, central

processing unit, alarm tools and related equipment, in a document.
The study shall also specify:

— the minimum level of artificial lighting required above and below the water surface (illuminance

in lux) to enable detection by the computer vision system in accordance with the performance

requirements;

— areas of the pool basin in which the computer vision system will be able to provide detection;

2 © ISO 2017 – All rights reserved
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SIST EN ISO 20380:2018
ISO 20380:2017(E)
— the alarm set off time in seconds (see 4.3.1).

A technical drawing of the pool basin(s) shall be provided in order to show the areas of coverage and

non-coverage by the computer vision system. The pool basin area(s) covered shall be clearly identified.

The technical study shall make it possible to optimize the performances for the system when in

operation. The factors to consider are:

— the general swimming pool architecture (layout and potential effect on the swimming pool of bay

windows and lightwells, etc.);
— the pool basin dimensions (shape, gradient, minimum depth and maximum depth);

— the texture and colour of the pool basin lining (e.g. tiling, stainless steel, PVC, resin);

— the specific equipment (moveable floor, moveable bulkhead, wave machine and all equipment able

to generate water movements);
— maximum instantaneous frequency of use of the swimming pool;
— the water clarity;
— the swimming pool attractions (e.g. waterslide);
— the alarm reception coverage area of mobile devices.

The technical study shall be part of the contract between the supplier and the responsible parties (e.g.

swimming pool operator).
4.3 Performance requirements
4.3.1 Alarm set off time
The alarm set off time shall be ≤15 s and fixed to an accurate value.
The current alarm set off time shall be displayed on the system interface.
The alarm set off time is built-in and shall not be able to be changed by staff.
4.3.2 Areas covered

The areas covered by the computer vision system shall be compliant with the technical study carried

out before system installation. Each trained staff shall be aware of these areas.

The computer vision system shall make it possible to temporarily create basin areas in which detection

is disabled in order to be able to manage specific activities, such as rescue drills or immersion of

training equipment. The trained staff shall be able to freely define these areas in order to temporarily

deactivate the alarm. The trained staff shall determine the duration of non-detection for each zone

created. Detection shall be reactivated automatically when the time has expired. The computer vision

system interface shall permanently indicate the position of these zones while they are activated. The

trained staff shall be able to change the non-detection settings (zone and duration) at any time.

4.3.3 Detection performance

Compliance to the detection test method described in 5.3 is achieved if the detection rate is ≥80 %

(under the set lighting conditions).
One alarm for every detection shall be set off.

Each time the trained staff is activating his user session, the computer vision system shall show in at

least two different ways that the used hardware is in operation.
© ISO 2017 – All rights reserved 3
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SIST EN ISO 20380:2018
ISO 20380:2017(E)

The computer vision system shall inform trained staff immediately when the detection performance is

deteriorating.

The computer vision system interface shall display at any time the level of deterioration in performance

and state its nature.

The system shall be able to set off alarms without any manual calibration between detections.

The computer vision system shall be able to simultaneously detect multiple incidents at different places

in all pool basins covered by the system.
4.3.4 False alarm rates

During normal use of the pool basin (that is to say outside specific activities such as aqua-aerobics,

aqua-biking and the use of play structures, etc.), there shall not be, on average, more than five false

alarms per day, per pool basin, with a system during public opening hours over a 30 day period.

4.4 Data communication and management
4.4.1 General

A data and alarm log covering the last 30 days during public opening hours shall be saved unless

regulatory provisions state otherwise.
4.4.2 Alarm data

If a siren is used, alarm sound shall be different from any other in the swimming pool.

If the computer vision system is fitted in several pools, it shall state the references of the pool basin

concerned by the alarm.

The computer vision system interface shall enable trained staff to stop the alarm.

The date, time, images and position of the detection shall be stored on an internal hard drive of the

computer vision system.
All alarms shall be transmitted.

All alarms shall be received in at least two ways by the trained staff. At least one shall be by a wired link.

There shall be at least one visible and one audible alarm. Alarm examples include siren, smartphone,

mobile devices such as pagers screen, alarm display panel, or tablets.

Any wireless alarm device shall be checked to ensure it works in the alarm reception coverage area

defined in the technical study.

When the alarm is triggered, the following information shall be transmitted as a minimum:

— alarm signal;
— affected pool basin;
— accurate position ±2 m of the detection in the affected pool basin.
4.4.3 Operational data

All data relating to use (including date and time of session opening and closing) shall be stored in the

form of a log on the interna
...

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