1、BRITISH STANDARD BS ISO 7176-6:2001 Wheelchairs Part 6: Determination of maximum speed, acceleration and deceleration of electric wheelchairs ICS 11.180.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS ISO 7176-6:2001 This British Standard, having been prepared under the d
2、irection of the Health and Environment Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 11 January 2002 BSI 11 January 2002 ISBN 0 580 38834 4 National foreword This British Standard reproduces verbatim ISO 7176-6:2001 and impl
3、ements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee CH/40, Sanitary chairs and wheelchairs, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-refere
4、nces The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalo
5、gue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text
6、; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cove
7、r, an inside front cover, the ISO title pages, pages ii to v, a blank page, pages 1 to 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsReference number I
8、SO 7176-6:2001(E) INTERNATIONAL STANDARD ISO 7176-6 Second edition 2001-10-01 Wheelchairs Part 6: Determination of maximum speed, acceleration and deceleration of electric wheelchairs Fauteuils roulants Partie 6: Dtermination de la vitesse, de lacclration et du ralentissement maximaux des fauteuils
9、roulants lectriquesii ISO 7176-6:2001(E)iii 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 membe
10、r 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 Elec
11、trotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting
12、. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 7176 may be the subject of patent rights. ISO shall not be held responsible for identifying any or al
13、l such patent rights. International Standard ISO 7176-6 was prepared by Technical Committee ISO/TC 173, Technical systems and aids for disabled or handicapped persons, Subcommittee SC 1, Wheelchairs. This second edition cancels and replaces the first edition (ISO 7176-6:1988), clauses and tables of
14、which have been technically revised. ISO 7176 consists of the following parts, under the general title Wheelchairs: Part 1: Determination of static stability Part 2: Determination of dynamic stability of electric wheelchairs Part 3: Determination of effectiveness of brakes Part 4: Energy consumption
15、 of electric wheelchairs and scooters for determination of theoretical distance range Part 5: Determination of overall dimensions, mass and turning space Part 6: Determination of maximum speed, acceleration and deceleration of electric wheelchairs Part 7: Measurement of seating and wheel dimensions
16、Part 8: Requirements and test methods for static, impact and fatigue strengths Part 9: Climatic tests for electric wheelchairs Part 10: Determination of obstacle-climbing ability of electric wheelchairs Part 11: Test dummies Part 13: Determination of coefficient of friction of test surfaces Part 14:
17、 Power and control systems for electric wheelchairs Requirements and test methods Part 15: Requirements for information disclosure, documentation and labelling 3egaP ISO71766:2001 11January2002ISO 7176-6:2001(E) iv Part 16: Resistance to ignition of upholstered parts Requirements and test methods Pa
18、rt 22: Set-up procedures The following parts are also on the work programme: Part 19: Wheeled mobility devices for use in motor vehicles Part 21: Electromagnetic compatibility of electrically powered wheelchairs and motorized scooters Requirements and test methods Part 23: Requirements and test meth
19、ods for attendant-operated stair-climbing devices Part 24: User-operated stair-climbing devices Requirements and test methods Part 25: Requirements and test methods for batteries and their chargers for powered wheelchairs and motorized scooters 4egaP ISO71766:2001 11January2002ISO 7176-6:2001(E)v In
20、troduction Maximum speed, acceleration and deceleration can be important factors in the selection of the most appropriate wheelchair for individual people. Maximum speed can have an influence on whether a wheelchair may be used on footpaths, on roads, or both, depending upon local legislation. Some
21、peoples main concern may be to travel as fast as possible, whereas other people may be apprehensive of higher speeds. In addition, other tests in the ISO 7176 series may require the determination of maximum speed in order to carry out their procedures. Maximum acceleration and deceleration are prima
22、rily of concern with regard to the comfort of the user, where high values can be very disturbing and lead to postural stability problems. These tests specify a consistent method of determining maximum values of speed, acceleration and deceleration to provide comparable results. 5egaP ISO71766:2001 1
23、1January2002blank Page6 1002:66717OSIINTENRATIONAL TSANDADR ISO -67176:(1002)E1 Wheelchairs Part 6: Determination of maximum speed, acceleration and deceleration of electric wheelchairs 1 Scope This part of ISO 7176 specifies test methods for determining the maximum speed, acceleration and decelerat
24、ion of electrically powered wheelchairs, including scooters, intended to carry one person, with a maximum nominal speed not exceeding 15 km/h (4,167 m/s). 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this
25、part of ISO 7176. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 7176 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indic
26、ated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 6440, Wheelchairs Nomenclature, terms and definitions ISO 7176-11, Wheelchairs Part 11: Test dummies ISO 717
27、6-15, Wheelchairs Part 15: Requirements for information disclosure, documentation and labelling ISO 7176-22, Wheelchairs Part 22: Set-up procedures 3 Terms and definitions For the purposes of this part of ISO 7176, the terms and definitions given in ISO 6440 apply. 4 Apparatus 4.1 Instrumentation th
28、at may need to be added to the test dummy, in which case its mass shall not exceed 5 % of the total dummy mass. 4.2 Horizontal test plane made up of a rigid, flat, horizontal surface of sufficient size to conduct the tests and with a coefficient of friction sufficient to allow only wheel slippage du
29、ring performance of the tests. NOTE The floor of a typical large building used for manufacturing or indoor leisure with, for example, a concrete, asphalt or wooden floor is acceptable. 7egaP 1002:66717OSI 3egaP ISO71766:2001 11January2002ISO 7176-6:2001(E) 2 4.3 Speed measurement device to measure a
30、nd record speed up to 5 m/s, with an accuracy of 0,1 m/s and a sample rate of at least 60 Hz. It shall include the facility to detect 10 % and 90 % values of the maximum speed measured in 6.1. 4.4 Acceleration/deceleration measurement device to measure and record acceleration/deceleration with the f
31、ollowing properties: a ) ara n geupto5m/s 2 ; b) an accuracy of 0,2 m/s 2 ; c) a sample rate of at least 60 Hz; d) a frequency response such that frequencies above 30 Hz are rejected. NOTE A trailing wheel with an optical rotation transducer is recommended as an appropriate piece of equipment. A mec
32、hanical accelerometer, laser, ultrasonic or similar type of equipment may also be used. If an accelerometer is used, the sensor should be mounted in a fore-aft alignment and on a rigid structure as near as possible to the fore-aft centreline of the seat. Electronic means may also be used to determin
33、e acceleration/deceleration. 4.5 Test ramp, made up of a rigid, flat, inclined plane with the same surface characteristics as the test plane (4.2), with inclination adjustable to 3 0,5 and 6 0,5 relative to the horizontal. NOTE 1 This may be either a ramp with adjustable inclination or two separate
34、fixed ramps. NOTE 2 An area of approximately 10 m 3 m is normally of sufficient size for each ramp. 4.6 Test dummy, as specified in ISO 7176-11, or a human test driver. If a dummy is used, a remote controller may be used to operate the wheelchair controls. This may be done by a telemetry system, by
35、an operator running alongside or by other similar means. NOTE Mass added to the wheelchair for the purposes of control or instrumentation should not significantly affect the overall mass distribution of the wheelchair. The overall mass of the loaded wheelchair may be adjusted to compensate for any s
36、uch added mass. 4.7 Supplementary weights to add to the human test driver to give the mass distribution equivalent to the relevant dummy. 5 Preparation of the test wheelchair Prepare the test wheelchair as follows before commencing the sequence of tests. a) Set up the wheelchair as specified in ISO
37、7176-22. b) Set any controls which are accessible to the user without special tools and which influence the maximum speed, rate of acceleration and/or deceleration to provide maximum values in each case. NOTE These may include programmable controls, touch pads, computer interfaces etc. 6 Determinati
38、on of maximum speed WARNING This testing is potentially hazardous to a human test driver and test personnel. Appropriate safety precautions should be taken to avoid injury. Any additional weights should be firmly secured. 8egaP ISO71766:2001 11January2002ISO 7176-6:2001(E)3 6.1 On a horizontal surfa
39、ce a) Ensure that the electrical driving system reaches a temperature typical of working conditions. NOTE 1 This may be done, for example, by driving the wheelchair for a distance of approximately 1,5 km. b) Within 5 min of completing a), place the wheelchair on the horizontal test plane. c) Drive t
40、he wheelchair forwards in a straight line on the horizontal test plane with its control device set to full speed command ensuring that it achieves its maximum speed. d) Measure the maximum speed achieved with the means specified in 4.3 and record this value, V m ,i nm/s. e) Repeat a) to d) for an ad
41、ditional two runs. f) Determine and record the value of the arithmetic mean, V mm , of the three values of V m measured in d) and e). g) Repeat a) to f) but driving with the wheelchair travelling in reverse. NOTE 2 It may be necessary to fix the castor orientations for this test to maintain a straig
42、ht line of travel. 6.2 On a plane inclined at 3 a) Repeat 6.1, driving up the test ramp set at 3 0,5. b) Repeat 6.1, driving down the test ramp set at 3 0,5. 6.3 On a plane inclined at 6 a) Repeat 6.1, driving up the test ramp set at 6 0,5. b) Repeat 6.1, driving down the test ramp set at 6 0,5. 7 D
43、etermination of acceleration WARNING This testing is potentially hazardous to a human test driver and test personnel. Appropriate safety precautions should be taken to avoid injury. Any additional weights should be firmly secured. a) Ensure that the electrical driving system reaches a temperature ty
44、pical of working conditions. NOTE This may be done by driving the wheelchair for a distance of approximately 1,5 km. b) Within 5 min of completing a), place the wheelchair on the horizontal test plane. c) Whilst recording speed and acceleration/deceleration with the means specified in 4.3 and 4.4, d
45、rive the wheelchair in a straight line on the horizontal test plane with its control device set to full speed command in a forwards direction until it achieves a speed within 3 % of its mean maximum speed, V mm , as determined in 6.1. d) Measure the time, T, in seconds taken for the wheelchair to ac
46、celerate from 10 % 3%to9 0% 3%ofits mean maximum speed V mm (m/s). e) Determine the overall acceleration, A o ,i nm/ s 2 , of the wheelchair using the following formula: AV T om m 0,8 9egaP ISO71766:2001 11January2002ISO 7176-6:2001(E) 4 f) Identify the peak acceleration value from the acceleration
47、recording of the instrumentation of 4.4. g) Determine the maximum value of acceleration, A m , recorded during acceleration in c) by averaging the acceleration samples during a 30 m/s interval centred around the peak recorded value of acceleration. h) Repeat a) to g) for an additional two runs. i) D
48、etermine and record the arithmetic mean acceleration values A om and A mm of the values A o and A m respectively, determined in e) to h). 8 Determination of deceleration WARNING This testing is potentially hazardous to a human test driver and test personnel. Appropriate safety precautions should be
49、taken to avoid injury. Any additional weights should be firmly secured. 8.1 Deceleration by normal operation a) Ensure that the electrical driving system reaches a temperature typical of working conditions. NOTE This may be done by driving the wheelchair for a distance of approximately 1,5 km. b) Within 5 min of completing a), place the wheelchair on the horizontal test plane. c) Whilst recording speed and acceleration/deceleration wi
