1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationWinter maintenance equipment Road weather information systemsPart 4: Test methods for stationary equipmentPD CEN/TS 15518-4:2013National forewordThis Published Document is the UK
2、 implementation of CEN/TS 15518-4:2013.The UK participation in its preparation was entrusted to Technical CommitteeB/513, Construction equipment and plant and site safety.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purpor
3、t to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 77795 0ICS 07.060; 13.030.40; 35.240.99Compliance with a British Standard cannot confer immunity from
4、legal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationAmd. No. Date Text affectedPUBLISHED DOCUMENTPD CEN/TS 15518-4:2013TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE S
5、PEZIFIKATION CEN/TS 15518-4 March 2013 ICS 07.060; 13.030.40; 35.240.99 English Version Winter maintenance equipment - Road weather information systems - Part 4: Test methods for stationary equipment Matriel de viabilit hivernale - Systmes dinformation mtorologique routire - Partie 4 : Mthodes dessa
6、i pour les matriels fixes Winterdienstausrstung - Straenzustands- und Wetterinformationssysteme - Teil 4: Prfverfahren bei stationren Einrichtungen This Technical Specification (CEN/TS) was approved by CEN on 30 July 2012 for provisional application. The period of validity of this CEN/TS is limited
7、initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to ma
8、ke the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards
9、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, Slovakia, Slovenia
10、, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for C
11、EN national Members. Ref. No. CEN/TS 15518-4:2013: EPD CEN/TS 15518-4:2013CEN/TS 15518-4:2013 (E) 2 Contents Page Foreword . 3 Introduction 4 1 Scope 5 2 Normative references . 5 3 Type reception test definition 5 3.1 Introduction 5 3.2 Pavement surface temperature . 6 3.3 Road surface condition 10
12、3.4 Water film thickness 16 3.5 Freezing temperature . 17 3.6 Road body temperature . 21 3.7 Air temperature 21 3.8 Relative humidity . 23 3.9 Dew point temperature . 25 3.10 Precipitation detection time . 25 3.11 Precipitation type . 26 3.12 Precipitation intensity 27 3.13 Snow depth. 28 3.14 Wind
13、speed . 28 3.15 Gust of wind . 29 3.16 Wind direction 29 3.17 Visibility 31 Bibliography 33 PD CEN/TS 15518-4:2013CEN/TS 15518-4:2013 (E) 3 Foreword This document (CEN/TS 15518-4:2013) has been prepared by Technical Committee CEN/TC 337 “Winter maintenance and road service area maintenance equipment
14、”, the secretariat of which is held by AFNOR. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document Winter maintenance equipme
15、nt Road weather information systems comprises of the following parts: Part 1: Global definitions and components; Part 2: Road weather Recommended observation and forecast; Part 3: Requirements on measured values of stationary equipments; Part 4: Test methods for stationary equipment (the present doc
16、ument). According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia
17、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 15518-4:2013CEN/TS 15518-4:2013 (E) 4 Introduction Road Weather
18、Information Systems (RWIS) are complex structures used for road maintenance decision support, which feature as a rule the following components: meteorological sensors and instruments, transmission technology, computer systems for processing, representation and storing of information, road weather fo
19、recasts, alarms, in relation to traffic control and traffic information systems and more. This European Specification lays down the test procedures to verify the requirements on stationary equipment defined in EN 15518-3. The aim is to allow for objective and reproducible measurement analysis and ev
20、aluation. PD CEN/TS 15518-4:2013CEN/TS 15518-4:2013 (E) 5 1 Scope This Technical Specification specifies the test methods, the experimental set-up and result analysis for the laboratory qualification of stationary equipment within a RWIS. 2 Normative references The following documents, in whole or i
21、n part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13108-5, Bituminous mixtures Material spec
22、ifications Part 5: Stone Mastic Asphalt EN 15518-3, Winter maintenance equipment Road weather information systems Part 3: Requirements on measured values of stationary equipments EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025) ISO 177
23、14, Meteorology Air temperature measurements Test methods for comparing the performance of thermometer shields/screens and defining important characteristics 3 Type reception test definition 3.1 Introduction 3.1.1 General The tests described hereafter apply to either a complete system (which can inf
24、luence the measured value) consisting of sensor, processing electronics and associated terminal program software necessary to acquire, display and store the measurements in a digital form, or to some specific parts of the whole system when the inputs can be simulated, as specified by the manufacture
25、r. Figure 1 below is an illustration of the possible functional components of a system. The manufacturer shall specify and supervise the material set-up for the test set-up. The manufacturer may not change the test set-up during the tests. The data shall be readable during the whole test. The whole
26、test shall stop in case the manufacturer changes the test set-up. If a single sensor provides measurements subject to more than one test procedure, it shall always be tested against all these procedures within the same test campaign and by the same laboratory. This is also valid for tests after tech
27、nical changes to a sensor. Figure 1 Possible functional components of a system Test protocols shall state the version and type of hardware, firmware and software components as well as the material set-up during the test. PD CEN/TS 15518-4:2013CEN/TS 15518-4:2013 (E) 6 In case of major technical chan
28、ges to one or other of these components which affect the requirements of EN 15518-3, the manufacturer shall seek new certification. In case of minor changes not affecting the requirements of EN 15518-3, the manufacturer shall indicate the changes and, upon request, provide the demonstration that the
29、 changes did not affect in an adverse way the system which was originally tested and that the new system still meets the standard. In general, if a sensor was tested as a single device, met the requirements of this standard, and its nominal output can be simulated, the RWIS manufacturer shall be all
30、owed to demonstrate only that the measuring chain cannot influence the raw signal in a manner to exceed the allowed tolerance. This has to be confirmed by an accredited laboratory. Therefore, this standard applies to three possible configurations: sensor as single device; electronics with simulated
31、sensor inputs; complete system. 3.1.2 Test body Wherever stated, the sensor shall be permanently installed in the centre of a test body according to the manufacturers specifications, which shall be part of the test report. The characteristics of the test body are: a) Minimal dimensions 600 mm by 400
32、 mm surface and 200 mm depth. There shall be a minimal distance of 15 cm between each side of the sensor (including sealing compound, in all three dimensions) and the side of the test body. This shall be documented in the test report. b) Realisation: Under similar conditions than road construction,
33、having the following characteristics: 1) material: Asphalt Concrete (heavy traffic road); 2) layer: one single mixture (surface course) in three or more layers, the upper layer being 6 cm deep; 3) EN 13108-5, Bituminous mixtures Material specifications Part 5: Stone Mastic Asphalt: i) grading rate:
34、8 mm: 100 %; 5,6 mm: 90 % to 100 %; 2 mm: 20 % to 40 %; 0,063 mm: 5 % to 12 %; ii) binder rate: Bmin7,4;iii) maximum cavity rate: Vmax3; iv) minimum cavity rate: Vmax2.Other test bodies may be defined and used in case of specific needs. The type and characteristics of the test bodies shall be mentio
35、ned in the test report. 3.2 Pavement surface temperature 3.2.1 General This test shall be realised under stabilised and transient temperatures (see below). PD CEN/TS 15518-4:2013CEN/TS 15518-4:2013 (E) 7 Unless otherwise specified, a valid measurement value shall be delivered by the system at latest
36、 6 min after the test conditions are met. 3.2.2 Test method 3.2.2.1 Stabilised temperature test The sensor is plunged into a liquid bath set at stabilised temperatures. The temperature response of the sensor is compared to the temperature response of a reference thermometer. The test does not apply
37、to sensors working without contact. 3.2.2.2 Transient surface temperature test The test shall take place in a cooled climatic chamber. The sensor shall be installed in a test body as per 3.1.2 above. Reference probes shall be installed on the surface of the test body in a manner to reduce as much as
38、 possible the influence of direct radiation. A radiation source (2 halogen lamps) is switched on for a given time to simulate road heating by solar radiation and cooling by emissivity. The temperature response of the sensor shall be compared to the temperature response of the reference probes. 3.2.3
39、 Test equipment 3.2.3.1 Stabilised temperature test This test requires the following equipment: container with liquid solution (car cooling liquid or saline solution); apparatus for cooling and stabilising this liquid in a container within the expressed requirements (“cryostat”); reference thermomet
40、er with accuracy 0,1 C and sampling rate of maximum 10 s. 3.2.3.2 Transient temperature test This test requires the following equipment: climatic chamber; 2 x 500 W Halogen lamps placed as per Figure 2 below and aiming at the centre of the test body; test body as per 3.1.2 above; 3 PT 100 reference
41、probes with polling interval less than half that of the sensor to be tested. The reference probes shall be installed horizontally in the test body in a groove 3 mm deep and covered with bitumen. They shall be located in an equilateral triangle around the sensor to be tested, each one being no more t
42、han 5 cm away from the border of the sensor to be tested (see Figure 2 below). PD CEN/TS 15518-4:2013CEN/TS 15518-4:2013 (E) 8 Dimensions in centimetres Key 1 500 W Halogen lamps 2 test body (see 3.1.2) 3 3 PT reference probes Figure 2 Set-up for transient temperature test 3.2.3.3 Stabilised tempera
43、ture test Ensure a proper connection of the sensor to be tested and the whole measurement chain. The measurements of the sensor and the reference thermometer shall be recorded throughout the test. Set the bath to the given temperature; ensure a uniform temperature of the bath (difference 98 %), whic
44、h has been previously dried at 70 C during 24 h in an oven. The salt shall be dissolved after at least 15 min magnetic stirring. Table 3 Mass values for preparing calibrated CaCl2 solutions Mass distilled water g Mass CaCl2g Freezing temperature C 1 000 218,0 15 1 000 226,9 16 1 000 235,2 17 1 000 2
45、41,6 18 1 000 247,9 19 1 000 257,0 20 3.5.3.2.4 MgCl2solutions The mass concentrations given in the Table 4 below shall be prepared using anhydrous MgCl2for synthesis (purity 98 %), which has been previously dried at 105 C during 24 hours in oven. The salt shall be dissolved after at least 15 min ma
46、gnetic stirring. PD CEN/TS 15518-4:2013CEN/TS 15518-4:2013 (E) 20 Table 4 Mass values for preparing calibrated MgCl2 solutions Mass distilled water g Mass MgCl2g Freezing temperature C 1 000 173,7 15 1 000 180,4 16 1 000 187,5 17 1 000 193,2 18 1 000 199,0 19 1 000 204,8 20 3.5.4 Test procedure Ensu
47、re a proper connection of the sensor to be tested and the whole measurement chain. Set the climatic chamber to a temperature of 0 C. Dew point temperature shall be at least 1 C below the air temperature to avoid condensation. The temperatures of air and sensor shall be identical and stabilised. Inst
48、all the precision scale close to the sensor to be tested under the spreading device. The mass of liquid applied over the surface of the plate of the scale is recorded and converted to liquid thickness. This value serves as reference for the test. Using a towel and a fan, clean and dry the surface of
49、 the sensor. Apply a film thickness of 0,1 mm of solution number 1 (see Table 1 above) over the sensor. This water film thickness has to remain constant throughout the test. Start recording the freezing temperature 6 min after application, or as soon as a first value within the agreed tolerances has been reported, whichever comes first. Keep recording the freezing temperature for five consecutive measurements or 30 min, whichever comes first. Repeat the test with a fil
