1、BRITISH STANDARD BS EN 50148:1996 Electronic taximeters The European Standard EN50148:1995 has the status of a BritishStandardBSEN50148:1996 This BritishStandard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and
2、 comesintoeffect on 15March1996 BSI03-2000 The following BSI references relate to the work on this standard: Committee referenceEPL/278 Draft for comment93/209669DC ISBN 0 580 25249 3 Committees responsible for this British Standard The preparation of this BritishStandard was entrusted to Technical
3、Committee EPL/278, Road transport informatics, upon which the following bodies were represented: Automatic Identification Manufacturers Association (AIM UK) British Telecommunications plc Consumer Policy Committee of BSI Department of Transport GAMBICA (BEAMA Ltd.) Institution of Civil Engineers Ins
4、titution of Electrical Engineers Institution of Highways and Transportation Road Signalling Development Association Society of Motor Manufacturers and Traders Limited The following body was also represented in the drafting of the standard, through subcommittees and panels: Institute of Trading Stand
5、ards Administration Amendments issued since publication Amd. No. Date CommentsBSEN50148:1996 BSI 03-2000 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN50148 5 List of references Inside back coverBSEN50148:1996 ii BSI 03-2000 National foreword Thi
6、s BritishStandard has been prepared by Technical CommitteeEPL/278 is the English language version of EN50148:1995 Electronic taximeters, published by the European Committee for Electrotechnical Standardization (CENELEC). A British Standard does not purport to include all the necessary provisions of
7、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. Cross-references Publication referred to Corresponding British Standard IEC68-1:1988 BS EN60068 Environmental testing Pa
8、rt1:1995 General and guidance BS EN60068-2:1995 Test methods IEC68-2-1:1990 BS EN60068-2-1:1993 Tests A. Cold IEC68-2-2 BS EN60068-2-2:1993 Tests B. Dry heat IEC68-2-30 BS2011 Environmental testing Part2.1 Tests Part2.1Db:1981 Test Db and guidance: Damp heat cyclic(12+12 hour cycle) IEC68-2-36 Part2
9、.1 Fdb:1973 Test Fdb. Random vibration wideband reproducibility medium IEC801-2:1991 BS EN60801 Electromagnetic compatibility for industrial-process measurement and control equipment BS EN60801-2:1993 Electrostatic discharge requirements IEC801-3 BS6667 Electromagnetic compatibility for industrial-p
10、rocess measurement and control equipment Part3:1985 Method of evaluating susceptibility to radiated electromagnetic energy ISO7637-1 BS AU243 Methods of test for electrical disturbance by conduction and coupling. Part2:1991 Electrical transient conduction along supply lines only on passenger cars an
11、d light commercial vehicles with12V supply EN55022:1994 BS EN55022:1995 Limits and methods of measurement of radio disturbance characteristics of information technology equipment Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to1
12、2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN50148 September1995 ICS 19.080; 39.040.2
13、0; 43.040.30 Descriptors: Taxi, fare to be paid by the passenger of a taxi, taximeter, electronic taximeter English version Electronic taximeters Taximtres lectroniques Elektronische Fahrpreisanzeiger This European Standard was approved by CENELEC on1994-12-06. CENELEC members are bound to comply wi
14、th 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 Central Secretar
15、iat or to any CENELEC 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 CENELEC member into its own language and notified to the Central Secretariat has the same status as the
16、official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotech
17、nical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN50148:1995EEN50148:1995 BSI 03-2000 2 Foreword This European Standard
18、was prepared by CENELEC BTTF63-4, Electronic taximeters. The text of the draft, based on document BT(IT/NOT)12, was submitted to the formal vote and was approved by CENELEC as EN50148 on1994-12-06. The following dates were fixed: Contents Page Foreword 2 1 Scope 5 2 Definitions 5 2.1 Electronic taxi
19、meters 5 2.2 Device constant k of the taximeter 5 2.3 Vehicle constant w 5 2.4 Totalizers 5 2.5 Initial hire fee 5 2.6 Initial distance 5 2.7 Initial time 5 2.8 Time-counting 5 2.9 Distance-counting 5 2.10 Time-distance counting 5 2.11 Single system calculation 5 2.12 Double system calculation 5 2.1
20、3 Maximum permissible error (MPE) 5 2.14 Distance measuring signal 5 2.15 Time measuring signal 5 2.16 Reference number of pulses 6 2.17 Tariff 6 2.18 Tariff values 6 2.19 Distance tariff value 6 2.20 Time tariff value 6 2.21 Tariff position 6 2.22 Tariff regulation 6 2.23 Supplement 6 2.24 Calculat
21、ing device 6 2.25 Adjustment device 6 2.26 Securing 6 2.27 Sealing 6 3 Unit of measurement 6 4 Technical characteristics 6 4.1 Calculating device 6 4.1.1 Calculation methods 6 4.1.2 Price indication 6 4.1.3 Device constant 7 4.1.4 Tariff positions 7 4.2 Operating device 7 4.2.1 Operating position “F
22、OR HIRE” 7 4.2.2 Operating position “OCCUPIED” 7 4.2.3 Operating position “FARE” 7 4.2.4 Operating position “MEASURE” 7 4.2.5 Restrictions 8 latest date by which the ENhas to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1995-12-15 latest d
23、ate by which the national standards conflicting with the EN haveto be withdrawn (dow) 1995-12-15EN50148:1995 BSI 03-2000 3 Page 4.2.6 Supplement device 8 4.3 Indicating device 8 4.4 Totalizers 8 4.5 Tariff programming 8 4.5.1 Input of tariff data 8 4.5.2 Display of tariff data 9 4.6 Test connector 9
24、 4.7 Auxiliary devices 9 5 Design and constructional requirements 9 6 Operating characteristics 10 6.1 Voltage range 10 6.2 General properties 10 7 Maximum permissible errors 10 7.1 MPE of calculating device and time measuring signal 10 7.2 Tariff values used in the determination of errors 10 7.3 MP
25、E of the adjustment device 10 8 Sealing 10 8.1 Mechanical sealing 10 8.2 Electronic sealing 10 9 Marking and other instrument information 11 10 Type tests 11 10.1 General 11 10.2 Test conditions 11 10.3 Conformity and document inspection 11 10.4 Function test 11 10.5 Function control 11 10.6 Visual
26、inspection 11 10.7 Dry heat test 11 10.8 Damp heat test 11 10.9 Cold test 11 10.10 Vibration test 12 11 Electromagnetic compatability 12 11.1 Immunity tests 12 11.1.1 Voltage dips and interruptions on power lines 12 11.1.2 Transients and surges on power lines 12 11.1.3 Transients on signal lines 12
27、11.1.4 Electromagnetic fields 12 11.1.5 Electrostatic discharges 12 11.2 Emission test 12 Table 1 Test program 114 blankEN50148:1995 BSI 03-2000 5 1 Scope This Standard applies to electronic taximeters, hereinafter referred to by the general term taximeters, to be installed on public hire vehicles (
28、taxis or cabs) which, with the aid of electronic devices, calculate and indicate the amount to be paid by the passenger of the taxi. This standard does not apply to taximeters being remotely controlled by external intelligence as far as it concerns the functions described in this standard. This stan
29、dard does not deal with performance requirements of the taximeter after installation or with the installation itself. 2 Definitions For the purpose of this Standard the following definitions apply. 2.1 electronic taximeters electronic taximeters are instruments normally installed in taxis which, mai
30、nly by means of electronic components, calculate and display the fare to be paid for the use of the taxi, on the basis of distance travelled and duration of the hiring 2.2 device constant k of the taximeter the device constant k of the taximeter is a value giving the number of the pulses which the i
31、nstrument must receive in order to correctly indicate a distance travelled of1kilometre. According to the construction of the instrument, the device constant k may be adjustable 2.3 vehicle constant w the vehicle constant w is a value giving the number of pulses supplied to the taximeter and appeari
32、ng on the connecting component of the vehicle for a distance travelled of1kilometre. The constant w is expressed in pulses per kilometre (km 1 ) 2.4 totalizers the totalizers are formed by counting registers, which accumulate values for purposes other than the transaction between driver and customer
33、 2.5 initial hire fee the initial hire fee is a fixed amount, charged to the passenger, regardless of the time or distance of the journey 2.6 initial distance the distance which can be travelled according to the tariff for the initial hire fee, considering distance-counting only 2.7 initial time the
34、 period during which the taxi can be used for the initial hire fee, considering time-counting only 2.8 time-counting time-counting is the calculation mode in which the fare increases in proportion to the duration of the hiring 2.9 distance-counting distance-counting is the calculation mode in which
35、the fare increases in proportion to the distance travelled 2.10 time-distance counting time-distance counting is the calculation mode in which two additional components of the fare increase concurrently, one in proportion to the duration of the hiring and the other in proportion to the distance trav
36、elled 2.11 single system calculation single system calculation calculates the fare using either time-counting or distance-counting see4.1.1 under a) 2.12 double system calculation double system calculation calculates the fare using time-distance counting 2.13 maximum permissible error (MPE) the maxi
37、mum value of the error allowed 2.14 distance measuring signal the signal supplied by the taximeter to the calculating device, in proportion to the distance travelled 2.15 time measuring signal the signal supplied by the taximeter to the calculating device, in proportion to the duration of the hiring
38、EN50148:1995 6 BSI 03-2000 2.16 reference number of pulses the theoretical number of pulses from the distance- and/or time measuring signal, which can be calculated using the tariff data and the device constant k, which should lead to a certain change in the price indication 2.17 tariff a set of tar
39、iff values which will be operative in the taximeter in a specified tariff position 2.18 tariff values the values from which the taximeter calculates the fare 2.19 distance tariff value the tariff value expressed as an amount of money for a given distance 2.20 time tariff value the tariff value expre
40、ssed as an amount of money for a given period of time 2.21 tariff position a position to which the taximeter can be adjusted in the operating position OCCUPIED. Pre-adjustment may be possible in the operating position FOR HIRE 2.22 tariff regulation a regulation, establishing which tariffs and suppl
41、ements are to be applied under specified conditions 2.23 supplement an amount of money charged to the passenger for an extra service, which is not the result of the measurement performed by the taximeter 2.24 calculating device the part of the taximeter by which the measured distance and the measure
42、d time are converted into the fare, using the selected tariff-values 2.25 adjustment device the part of the calculating device, by which the device constant can be adjusted to the vehicle constant 2.26 securing securing includes all measures which will make unauthorised changes to the taximeter impr
43、obable and/or detectable because the knowledge, tools or parts necessary to perform or conceal such changes are not expected to be available to an unauthorised person 2.27 sealing sealing includes those securing measures which can only be applied by persons authorised to apply a legally protected se
44、aling mark 3 Unit of measurement The distance and time shall be presented in S.I.units. The fare and any supplement shall be displayed in legal monetary units of the country where the taximeter will be used. In countries where imperial units are legal, these units may be used. 4 Technical characteri
45、stics 4.1 Calculating device 4.1.1 Calculation methods The calculation of the fare can be carried out by one of to the following methods: a) By time-counting or distance-counting. The change of time-counting to distance-counting shall take place when the speed of the car is such that the distance-co
46、unting becomes more important than the time-counting, taking into account the applied tariff values. This speed is determined by the value resulting from the division of the time-tariff value by the distance tariff-value. b) By time-distance counting. The taximeter shall be constructed in such a way
47、 that both calculation methods are possible. It must be possible to secure this switch option. 4.1.2 Price indication Time-counting and/or distance-counting shall be activated when the taximeter is switched to the operating position OCCUPIED. At this moment the initial hire fee shall be indicated. T
48、he first change in price indication shall take place after initial distance or initial time or combination of time and distance. The initial distance and the initial time are specified in the applied tariff.EN50148:1995 BSI 03-2000 7 The subsequent changes in price indication shall take place after
49、a certain time or distance has elapsed. For double system calculation a subsequent change in price indication shall take place after a combination of time elapsed and distance travelled in accordance with the selected tariff. This also applies in case of single system calculation if a change from time-counting to distance-counting or vice versa occurs. In this case no rounding related to the monetary step is allowed. 4.1.3 Device constant The device constant k shall not be lower than500pulses per kilometre and it shall be possible to adjust it to the vehicle
