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1、kl)0661:L866 OSI .iaqumu amaiajatl aLhey 81 ap uojjwo ua Juawaq0-m ap neawej np uos!eu(lq,p suo!jepen sap a6emsayy - sapA30joW peal JO uo!tmnl e se uoeupu tueaq paddip 0 uo!pqmn JO yaumnseayy - sapA3Jo*oyy Sl-ZL-0661 uwpa w!d 1866 OSI aHwlNvlS -lVNOllVNtl3lNI Copyright International Organization for
2、 Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 00:20:52 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9987:1990(E) Foreword IS0 (the international Organization for Standardization) is a
3、 worldwide federation of national standards bodies (IS0 member bodies). The work of preparing international Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represente
4、d on that committee. international organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the international Eiectrotechnicai Commission (IEC) on ail matters of eiectrotechnicai standardization. Draft international Standards
5、adopted by the technical committees are clrcuiated to the member bodies for voting. Publication as an inter- national Standard requires approval by at least 75% of the member bodies casting a vote. international Standard IS0 9987 was prepared by Technical Committee iSO/TC 22, Road vehicles. Annex A
6、forms an integral part of this International Standard. Annexes B and C are for information only. 0 IS0 1990 All rights reserved, No part of this publlcatlon may be reproduced or utilized In any form or by any means, electronic or mechanlcal, lncludlng photocopylng and microfilm, without permlsslon I
7、n wrltlng from the publisher. lnternatlonal Organization for Standardization Case Postale 56 l CH-1211 Get-t - or by the tangent of that angle, expressed in percent inclination (since the angles are small 1 % is equal to 10 mrad). If the inclination is expressed in percent inclination with negative
8、values denoting downward incli- nation and positive values denoting upward incli- nation (see figure I, it can be calculated from the following formula: h1-h, x100 I where 4 1 NOTE 2 is the height above the ground, in milli- metres, of a characteristic point of the cut- off on the opposite side to t
9、raffic?), measured on a vertical screen perpendic- ular to the vehicle longitudinal median plane, placed at a horizontal distance 1; is the height above the ground, in milli- metres, of the reference centre of the headlamp; is the distance, in millimetres, from the screen to the centre of the headla
10、mp. If the headlamp is fixed to the handlebars or to the frame of the vehicle and has not been reset after load variation, the variation of the dipped beam inclination is 1) For European-type dipped beams, this part of the cut-off is therefore independent of the characteristic point chosen. 1 Copyri
11、ght International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 00:20:52 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9987:1990(E) identical to the variation of the in
12、clination of the vehicle itself and can be derived from it (see annex B). 3.2 measured initial inclination: Mean value of dipped beam inclination (3.1) (or vehicle inclination if note to 3.1 applies), measured in accordance with 6.2. It serves as a reference value for assessing the varlation of the
13、beam inclination as the load varies. 3,3 manufacturers maximum total mass inclination: Mean value of dipped beam incli- natlon (3.1) (or vehicle Inclination if note to 3.1 ap- plies), measured in accordance with 6.5. 3,4 variation of dipped beam lncllnation: Difference between the maximum total mass
14、 inclination (3.3) and the measured initial inclination (3.2), posi- .tlve values denoting upward inclination and negative values denoting downward inclination. 3.5 reference centre of headlamp: (See definition 3.41 of IS0 7227:1987.) 3.6 headlamp ieveiiing device: (See definition 3.44 of IS0 7227:1
15、987.) NOTE 3 This device may be either automatic or manual. 4 Measurement conditions 4.1 If visual inspection of the dipped beam pattern on the screen, or a photometric method, is used, measurements shall be carried out in a dark place (for example a dark room) of sufficient area to allow the vehicl
16、e and screen to be placed as shown in figure 1. The reference centre of the headlamp (3.5) shall be at a distance 1 of at least 10 m from the screen (or the optical equivalent) and as specified by the manufacturer. 4.2 The vehicle and the screen shall be located in such a way that the requirements g
17、iven in 4.2.1 and 4.2.2 are met. 4,2,1 The ground on which measurements are made shall be as flatand horizontal as possible, so that the reproducibility of measurements of dipped beam inclination can be ensured to an accuracy of no var- iation of the “vertical” position allowed by the sup- porting s
18、ystem shall introduce a variation of beam inclination greater than 0,5 mrad. 6.2 Determination of initial inclination 6.2.1 The vehicle shall be in the conditions speci- fied in clause 5 and loaded to condition No. 1, specified in annex A. Before any measurement, the vehicle shall be rocked as speci
19、fied in 6.4. During the measure- ments, the vehicle shall be kept vertical by means of a supporting system which does not interfere with the suspension (see 6.1.2). 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9
20、972545001 Not for Resale, 04/25/2007 00:20:52 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9987:1990(E) The handlebars shall be blocked in such a position that the front wheel centre plane is parallel to the vehicle longitudinal median plane. 6.2.2 Measurements shall
21、 be carried out three times. If none of the three measured results differs by more than 2 mrad (0,2 % inclination) from the arithmetic mean of the results, that mean shall constitute the final result. If, for any measurement, this difference is greater than 2 mrad (0,2 % inclination) a further serie
22、s of 10 measurements shall be taken, the arithmetic mean of which shah constitute the final result. 6.3 Headlamp class and measurement methods Depending on the headlamp class as defined in an- nex B, various measurement methods are applica- ble, provided that the readings are within an accuracy of +
23、 0,2 mrad (-f 0,02 % inclination). Ex- amples of test methods are given in annex B; alter- native methods are allowed provided that they give equivalent results. 6.4 Measurement of load variation The vehicle shall be loaded to condition No. 2, specified in annex A. Afler varying the load, the vehicl
24、e suspension and any other part likely to affect the dipped beam incli- nation shall be activated using the following method: With the vehicle standing on the measuring site, rock the body longitudinally continuously for at least three complete cycles, each cycle consist- ing in pushing down first t
25、he rear and then the front end of the vehicle. If necessary, the wheels may rest on floating platforms, obtained, for example, by placing metal balls between the bottom plate on the ground and the top plate supporting the wheel: they shall be used only if their absence would lead to a restriction of
26、 the suspension movement likely to influence the measurement results. The rocking sequence shall end with the completion of a cycle. Before taking the measurements, wait until the vehicle comes to rest by itself. 6.5 Measurement of manufacturers maximum total mass inclination 6.5.1 The vehicle shall
27、 be loaded to condition No. 2, specified in annex A. Before each measure- ment, the vehicle shall be rocked as specified in 6.4. 6.5.2 Measurements shall be carried out three times. If none of the three measured results differs by more than 2 mrad (0,2 % inclination) from the arithmetic mean of the
28、results, that mean shall constitute the final result. If, for any measurement, this difference is greater than 2 mrad (0,2 % inclination), a further series of 10 measurements shall be taken, the arithmetic mean of which shall constitute the final result. Figure 1 - Dipped beam downward inclination f
29、or motorcycle Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 00:20:52 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9987:1990(E) Annex A (normati
30、ve) Loading conditions A.1 General In order to meet the loading conditions specified in clause A.2, the seat of the motorcycle shall be loaded with masses simulating either the rider alone, or the rider, passenger and the luggage, as appropriate. The vehicles suspension and the vehicles headlamp lev
31、elllng device, if any, shall be adjusted as prescribed by the manufacturer for each loading condition. It shall be possible to adjust the suspen- sion or the headlamp either by using a simple tool, or manually. A.2 Loading conditions Variations of dipped beam inclination caused by the changes in veh
32、icle attitude due to loading shall be measured under the load conditions specified in A.2.1 and A.2.2. A.2.1 Condition No. 1: Rider alone A mass of 75 kg applicable methods of measurement are indicated for each headlamp class. 8.2 Headlamp classes and applicable methods 8.2.1 Class I Class I headlam
33、ps are headlamps which are fixed rigidly to the handlebars or to the frame of the ve- hicle, and in which the optical elements do not move to compensate for variations in vehicle loading. NOTE 5 Semi-fixed aiming devices (for initial aim set- ting) and mechanisms for headlamp concealment are both co
34、nsidered as rigidly fixed. Applicable methods: 8.3.1.1 or B.3.1.2 8.3.2.1 or B.3.2.2 8.3.3.1 or 8.3.3.2 8.2.2 Class II Class II headlamps are headlamps which can be reset (manually or automatically) using a headlamp levelling device with respect to the handlebars or to the frame to compensate for va
35、riations in vehicle loading. Applicable methods: B.3.1.1 or B.3.1.2 B.3.2.1 or B.3.2.2 8.2.3 Class Ill Class III headlamps are headlamps in which the lens is rigidly fixed to the handlebars or to the frame of the vehicle, but in which the reflector or the other optical elements can be reset (manuall
36、y or auto- matically) to compensate for variations in vehicle loading. Applicable methods: 8.3.1.1 or 8.3.1.2 B.3 Measurement methods The examples given in B-3.1 to 8.3.3 are not in- tended to provide a comprehensive list: other suit- able methods may be used by agreement between the test laboratory
37、 and the vehicle manufacturer. 8.3.1 Direct measurement of dipped beam inclination The dipped beam shall be projected onto a screen. The distance shall be not less than 10 m (or optical equivalent) and as specified by the vehicle manu- facturer. All measurements of inclination and its variation shal
38、l be taken from a chosen characteristic point in the dipped beam pattern. The lens may be masked partialty to increase the sharpness of the beam pattern on the screen. If the dipped beam pattern has a well defined horizontal cut-off, a char- acteristic point shall be chosen on a suitable part of the
39、 horizontal cut-off line. 8.3.1 .I Visual inspection of chosen characteristic point Variations in the height above the ground of the characteristic point may be measured directly, for example by reference to suitable graduations marked on the screen. 8.3.1.2 Photometric means The position of the cha
40、racteristic point, and the var- iations in ifs height above the ground may be deter- mined by a photometric method such as that described in annex C. In this case, the electrical supply to the headlamps shall be stabilized. 8.3.2 Measurement of headlamp orientation in vertical plane 8.3.2.1 Laser an
41、d mirror A flat mirror, of good optical quality and with the reflective coating on its exposed surface, shall be mounted in the centre of the headlamp lens. A 5 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545
42、001 Not for Resale, 04/25/2007 00:20:52 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9987:1990(E) helium-neon (He-Ne) laser is recommended. The distances from the laser to the mirror and from the mirror to the measuring point shall be greater than 3 m. Unless the opt
43、ical layout is so arranged that both the incident and the reflected rays are sub- stantially horizontal, a correction will be necessary to compensate for vertical displacements of the headlamp due to variations in vehicle loading. 8.3.2.2 Inclinometer A suitable inclinometer, which may be one of the
44、 following types, shall be connected directly to the headlamp: - electronic inclinometer; 8.3.3 Measurement of vehicle attitude B.3.3.1 Direct measurement of vehicle height Two reference points, lying on the same vertical plane, shall be chosen. The horizontal distance be- tween the two points shall
45、 be at least 60 % of the vehicle overall length. These two reference points shall be part of the sus- pended portion of the vehicle. 8.3.3.2 Inclinometer The inclinometer shall be attached securely to a suitable rigid part of the vehicle frame or bodywork. - bubble level with vernier. Copyright Inte
46、rnational Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 00:20:52 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9987:1990(E) Annex C (informative) Photometric method for
47、 determining position of point of conventional cut-off This method can be used until committee TC 4.10 of the CIE (International Commission on Illumination) has given a more precise definition of conventional cut-off. C.l Definition of conventional cut-off For the purposes of this International Stan
48、dard, the horizontal part of the conventional cut-off is consid- ered as being located in the direction where beam intensity, 1, expressed in candeias, is equal to 0,151, + 500 where I, represents the beam intensity at 1” below the direction of intensity I. This definition applies exclusively to the
49、 determi- nation of the chosen characteristic point of the con- ventional cut-off reference position whenever dipped beam variation is checked (see figureC.1). The an- gular diameter of the photometric receiver shall be approximately 1 mrad. c.2 Measurement method Carry out measurements in a dark room, taking care to eliminate reflections on floor an