oSIST prEN IEC 63203-402-2:2022

SLOVENSKI STANDARD
oSIST prEN IEC 63203-402-2:2022
01-november-2022
Nosljive elektronske naprave in tehnologije - 402-2. del: Merjenje zmogljivosti
nosljivih izdelkov za fitnes - Štetje korakov
Wearable electronic devices and technologies - Part 402-2: Performance Measurement
of Fitness Wearables - Step Counting
Technologies et dispositifs électroniques prêts-à-porter - Partie 402-2: Mesure des
performances des dispositifs prêts-à-porter d’activité physique - Podomètres
Ta slovenski standard je istoveten z: prEN IEC 63203-402-2:2022
ICS:
31.080.99 Drugi polprevodniški elementi Other semiconductor devices
59.080.80 Inteligentne tekstilije Smart textiles
oSIST prEN IEC 63203-402-2:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN IEC 63203-402-2:2022

---------------------- Page: 2 ----------------------
oSIST prEN IEC 63203-402-2:2022
124/189/CDV

COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63203-402-2 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-08-26 2022-11-18
SUPERSEDES DOCUMENTS:
124/166/CD, 124/186/CC

IEC TC 124 : WEARABLE ELECTRONIC DEVICES AND TECHNOLOGIES
SECRETARIAT: SECRETARY:
Korea, Republic of Mr Jae Yeong Park
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:


Other TC/SCs are requested to indicate their interest, if any,
in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which
they are aware and to provide supporting documentation.

TITLE:
Wearable electronic devices and technologies - Part 402-2: Performance Measurement of Fitness
Wearables - Step Counting

PROPOSED STABILITY DATE: 2027

NOTE FROM TC/SC OFFICERS:
WG4 agreed this project proceeds to CDV and It was agreed at AG1 meeting held on 2022-05-27.

Copyright © 2022 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

---------------------- Page: 3 ----------------------
oSIST prEN IEC 63203-402-2:2022
63203-402-2/Ed1/CDV  IEC (E) – 2 – 124/189/CDV

1 CONTENTS
2
3 Introduction. 5
4 1 Scope . 6
5 2 Normative references . 6
6 3 Terms, definitions, symbols and abbreviated terms . 6
7 4 Test methods and procedures . 7
8 4.1 General . 7
9 4.2 Apparatus . 8
10 4.2.1 Treadmill . 8
11 4.2.2 Video recorder . 8
12 4.3 Preparation . 8
13 4.3.1 Subject requirement . 8
14 4.3.2 Number of subjects . 9
15 4.3.3 Gender – Balance . 9
16 4.3.4 Age. 9
17 4.3.5 BMI – Range . 9
18 4.3.6 Wearing position of DUT . 9
19 4.3.7 Balanced speed conditions . 9
20 4.4 Testing conditions . 9
21 4.4.1 Temperature . 9
22 4.4.2 Ambient light . 9
23 4.4.3 Humidity . 9
24 4.4.4 Apparatus setting . 10
25 4.4.5 DUT setting . 10
26 4.5 Measurement . 10
27 4.5.1 Start/end of test . 10
28 4.5.2 Measurement procedure . 11
29 4.6 Alternative Test Method . 12
30 4.6.1 Test automation . 12
31 5 Data analysis . 12
32 5.1 Step count accuracy calculation . 12
33 5.2 Accuracy requirement . 12
34 6 Test report . 12
35 Annex A . 15
36 Annex B . 16
37 Annex C . 17
38 Bibliography . 18
39
40
41
42
43

---------------------- Page: 4 ----------------------
oSIST prEN IEC 63203-402-2:2022
63203-402-2/Ed1/CDV  IEC (E) – 3 – 124/189/CDV
44 INTERNATIONAL ELECTROTECHNICAL COMMISSION
45 ____________
46 WEARABLE ELECTRONIC DEVICES AND TECHNOLOGIES
47
48 Part 402-2: Performance Measurement of Fitness Wearables –
49 Step Counting
50
51 FOREWORD
52
53
54 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
55 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
56 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
57 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
58 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
59 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
60 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
61 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
62 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
63 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
64 consensus of opinion on the relevant subjects since each technical committee has representation from all
65 interested IEC National Committees.
66 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
67 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
68 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
69 misinterpretation by any end user.
70 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
71 transparently to the maximum extent possible in their national and regional publications. Any divergence between
72 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
73 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
74 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
75 services carried out by independent certification bodies.
76 6) All users should ensure that they have the latest edition of this publication.
77 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
78 members of its technical committees and IEC National Committees for any personal injury, property damage or
79 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
80 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
81 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
82 indispensable for the correct application of this publication.
83 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
84 rights. IEC shall not be held responsible for identifying any or all such patent rights.
85 International Standard IEC xxxxxx-x has been prepared by IEC Technical Committee 124:
86 Wearable Electronic Devices and Technologies.
87 The text of this International Standard is based on the following documents:
FDIS Report on voting
XX/XX/FDIS XX/XX/RVD
88
89 Full information on the voting for the approval of this International Standard can be found in the
90 report on voting indicated in the above table.
91 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 5 ----------------------
oSIST prEN IEC 63203-402-2:2022
63203-402-2/Ed1/CDV  IEC (E) – 4 – 124/189/CDV
92 The committee has decided that the contents of this document will remain unchanged until the
93 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
94 the specific document. At this date, the document will be
95 • reconfirmed,
96 • withdrawn,
97 • replaced by a revised edition, or
98 • amended.
99
100
101
102
103
104
105

---------------------- Page: 6 ----------------------
oSIST prEN IEC 63203-402-2:2022
63203-402-2/Ed1/CDV  IEC (E) – 5 – 124/189/CDV
106
107 Introduction
108 The step counting feature is a common functionality of wearable devices. The accurate
109 measurement and reporting of the step count is an important factor in that count being accepted
110 by consumers. Data from wearable devices may be useful in helping to improve the health and
111 well-being of consumers that use wearable devices. The usability of the data to improve
112 outcomes is dependent on the reliability of the data to facilitate acceptance and improvement.
113
114 This document defines and provides standard test methods to evaluate the performance and
115 reliability of step counting on wearable devices. The benefit of using this standard is that it
116 provides a method to compare the step counting function of a wearable device against actual
117 step count, which can provide manufacturers with a method to improve step counts on their
118 devices.
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133

---------------------- Page: 7 ----------------------
oSIST prEN IEC 63203-402-2:2022
63203-402-2/Ed1/CDV  IEC (E) – 6 – 124/189/CDV
134
135 WEARABLE ELECTRONIC DEVICES AND TECHNOLOGIES
136
137 Part 402-2: Performance Measurement of Fitness Wearables –
138 Step Counting
139
140
141 1 Scope
142 This part of IEC XXX specifies terms and test methods to measure and evaluate the
143 performance, reliability, and accuracy of step counting feature in any wearable devices that can
144 count steps (e.g.: activity/fitness trackers, smart bands, smart shoes, and smart insoles).
145 This standard test method excludes the evaluation of data associated with travel distance or
146 calorie consumption.
147
148 2 Normative references
149 The following documents are referred to in the text in such a way that some or all of their content
150 constitutes requirements of this document. For dated references, only the edition cited applies.
151 For undated references, the latest edition of the referenced document (including any
152 amendments) applies.
153
154 There are no normative references in this document.
155 3 Terms, definitions, symbols and abbreviated terms
156 For the purpose of this document, the following definitions apply.
157 ISO and IEC maintain terminological databases for use in standardization at the following
158 addresses:
159  IEC Electropedia: available at http://www.electropedia.org/
160  ISO Online browsing platform: available at http://www.iso.org/obp
161
162 3.1
163 body mass index
164 BMI
165 value derived from the mass (weight in kilograms) and height (in metres) of an individual,
166 defined as the body mass divided by the square of the body length, expressed in units of kg/m2,
167 calculated by the following formula: [Source : ISO 20342-1:2019]
𝟐𝟐
168 BMI=𝒎𝒎/𝒍𝒍
169 where
170  m is the mass in kg;
171  l is the length in metres.
172
173 3.2
174 DUT
175 device under test
176

---------------------- Page: 8 ----------------------
oSIST prEN IEC 63203-402-2:2022
63203-402-2/Ed1/CDV  IEC (E) – 7 – 124/189/CDV
177 3.3
178 investigator
179 qualified person responsible for testing at a testing site
180
181 3.4
182 jogging
183 Raising and lowering each foot, with a period of time where neither foot is in contact with the
184 ground, with less intensity than running.
185
186 3.5
187 running
188 action of moving faster than jogging with more vigorous intensity than jogging never having both
189 feet on the ground simultaneously with the express purpose of locomotion
190
191 3.6
192 step
193 action or movement of lifting and then placing one foot in front of the other during walking or
194 running with the goal of locomotion
195
196 3.7
197 subject
198 person wearing a DUT
199
200 3.8
201 treadmill
202 training equipment with a unidirectional moving surface on which a walking or running activity
203 can take place, where the feet are free to leave the moving surface [Source : ISO 20957-6:2005]
204
205 3.9
206 walking
207 action of moving at a regular pace by lifting and setting down each foot in turn, never having
208 both feet off the ground simultaneously with the express purpose of locomotion
209
210
211 4 Test methods and procedures
212 4.1 General
213 A subject shall either walk, jog, or run on a motor-driven treadmill at a pre-set speed while the
214 activity is video-recorded. The recorded video shall be analysed by two investigators to acquire
215 the confirmed actual step counts.
216
217

---------------------- Page: 9 ----------------------
oSIST prEN IEC 63203-402-2:2022
63203-402-2/Ed1/CDV  IEC (E) – 8 – 124/189/CDV
218
219
220 Figure 1: overview of test environment and methods
221
222
223 4.2 Apparatus
224 The usual laboratory apparatus and, in particular, the following shall be used.
225
226 4.2.1 Treadmill
227 • A motorized treadmill shall be used for testing.
228 • A motorized treadmill should be capable to adjust the speed from 0.56 m/s to 5.4 m/s
229 and tilt to 0 degrees for at least 5 minutes.
230 4.2.2 Video recorder
231 • A video recorder is configured securely and properly to capture the entire view of the
232 test area for each test. A video recorder should be affixed to a device that ensures it
233 remains stationary during the test (e.g., tripod, stand).
234 • A video recorder should provide recording and monitoring capability, would be able to
235 record for at least 5 minutes, and should have sufficient camera angle and sensitivity to
236 record the motion of feet.
237 • The recorded scene shall include the entire body of the subject and the treadmill without
238 obstructions. Video frame shall clearly show all the subject’s foot strikes on the treadmill
239 during the test.
240
241 4.3 Preparation
242 4.3.1 Subject requirement
243 • Subjects shall have no medical conditions that restrict the subject from completing the
244 test. Prior to testing, subjects shall complete the Physical Activity Readiness
245 Questionnaire (PAR-Q) to determine eligibility to be included in testing. Any subject that
246 answers “yes” to one or more questions on the PAR-Q shall be excluded.

---------------------- Page: 10 ----------------------
oSIST prEN IEC 63203-402-2:2022
63203-402-2/Ed1/CDV  IEC (E) – 9 – 124/189/CDV
247 • Clothing or shoes worn by the subject under test should not obstruct the ability to count
248 steps.
249 • Subjects shall not hold onto the treadmill during walking, jogging, or running tests on
250 the treadmill. Subjects’ arms shall be able to freely swing and move during testing.
251 • For effective test design, it is important to select test participants using the PAR-Q.
252 • Unexpected errors can occur with a specific test subject resulting in unusual test results,
253 in which case additional subjects should be considered.
254 • Any excluded test results can be explained in Item 9 in the test report.
255 4.3.2 Number of subjects
256 • Testing shall include at least 20 subjects.
257 4.3.3 Gender – Bala
...