《BS-4737-3.4-1978.pdf》由会员分享,可在线阅读,更多相关《BS-4737-3.4-1978.pdf(8页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS 4737-3.4: 1978 Reprinted, incorporating Amendments No. 1 and No. 2 Specification for Intruder alarm systems in buildings Part 3: Requirements for detection devices Section 3.4 Radiowave Doppler detectors UDC 696.6:654.924.3:621.396.962.23 Licensed Copy: sheffieldun sheffieldun, n
2、a, Thu Nov 30 08:18:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4737-3.4:1978 This British Standard, having been prepared under the direction of the Electronic Equipment Standards Committee, was published under the authority of the Executive Board on 31 October 1978 BSI 12-1998 First published
3、April 1971 First revision October 1978 ISBN 0 580 10331 5 Amendments issued since publication Amd. No.Date of issueComments 3248March 1980Clause 12 deleted 3866January 1982Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:15 GMT+00:00 2006, Uncontroll
4、ed Copy, (c) BSI BS 4737-3.4:1978 BSI 12-1998i Contents Page Forewordii 1Scope1 2References1 3Definition1 4Frequency requirement1 5Area volume of coverage1 6Performance1 7Test period1 8Power supply1 9Environment1 10Interference1 11Housing1 Standards publication referred toInside back cover Licensed
5、Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4737-3.4:1978 ii BSI 12-1998 Foreword This revision of BS 4737 has been prepared under the direction of the Electronic Equipment Standards Committee to reflect the technical advances in the industry
6、since the publication of the 1971 edition. It takes account of Amendment No. 1, 1972 (AMD 1064) and of Amendment No. 2, 1973 (AMD 1218). It is being published in a number of separate Sections, as follows. Part 1: Requirements for systems with audible signalling only; Section 1.1: Installation; Secti
7、on 1.2: Maintenance and records; Part 2: Requirements for systems with remote signalling; Section 2.1: Installation; Section 2.2: Maintenance and records; Part 3: Requirements for detection devices, consisting of a number of separate Sections (3.1 to 3.14). The specifications for detection devices (
8、including this Section of BS 4737) are to be read in conjunction with Section 1.1 or Section 2.1 as appropriate. WARNING NOTE. Attention is drawn to the possibility of a nuisance or health hazard arising from exposure to radio waves. The fixing of radiation limits is still under consideration, natio
9、nally and internationally, but it is recommended that endeavours be made to ensure that systems do not emit radiation when people are lawfully near the device. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for th
10、eir correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2, an inside back cover and a back cover. This standard has been updated (
11、see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4737-3.4:1978 BSI 12-19981 1 Scope This British Standar
12、d specifies the general requirements for radiowave Doppler detectors to be used in intruder alarm systems in buildings. 2 References The titles of the standards publications referred to in this standard are listed on the inside back cover. 3 Definition For the purposes of this British Standard, the
13、following definition applies in addition to those given in BS 4737-1.1 and/or BS 4737-2.1. radiowave Doppler detector a detection device designed to generate an alarm condition in response to Doppler frequency effect produced by the reflection of radio waves from a moving person 4 Frequency requirem
14、ent The operating frequency of the detector shall be within a band permitted by the relevant national regulations in force at the time1). 5 Area or volume of coverage 5.1 The area or volume of coverage of the detector is that area or volume within which the entry by, and the radial movement towards
15、the detector of, a 60 20 kg person walking at any speed between 0.3 m/s and 0.6 m/s through a distance of 2 m, or 20 % of his radial separation from the detector (whichever is the greater), causes it to generate an alarm condition or to signal to a processing device. The installer shall identify the
16、 area or volume of coverage in the equipment record (see 7.1 of BS 4737-2.2:1977). NOTEIt should be recognized that the area or volume effectively protected by the device may extend beyond the stated area or volume of coverage as a result of the judicious siting of the detector in relation to points
17、 of entry to the premises. Alteration of the position of objects within the area or volume of coverage may cause significant changes in the area or volume protected. 5.2 A method of indication shall be provided to enable the subscriber to check the area or volume of coverage before the system is clo
18、sed. 6 Performance A detector that uses time integration of the signal amplitude or of the number of occasions on which the signal exceeds a trigger level, shall not respond to a signal lasting less than 200 ms generated by a target capable of saturating the amplifier. 7 Test period Except when imme
19、diate connection is needed for urgent security reasons, or when the detector replaces a similar existing unit, the detector shall not be connected to an alarm system which is extended to the police until the detector has operated in the installation for at least 7 days without generating an unwanted
20、 alarm. 8 Power supply An alarm condition shall be generated if the voltage of the power supply to the detector is reduced sufficiently to impair the performance of the detector. 9 Environment The requirements of this British Standard shall be met by the detector under any combination of the followi
21、ng environmental conditions: 10 Interference The detector shall be adequately protected against any externally-generated radio-frequency interference and/or mains-borne interference which may normally be expected to occur within the working environment. 11 Housing The detector and any processing dev
22、ice shall be housed in one or more containers. It shall not be possible to open the container(s) by the normal means of access without operating an anti-tamper device. If the equipment is housed in separate containers, the interconnection(s) shall be electrically protected. Any means for adjusting t
23、he equipment shall be enclosed within the container(s). 1) Reference should be made to the Radio Regulatory Division of the Home Office (Waterloo Bridge House, Waterloo Road, London SE1 8UA). Temperature:0 C to 40 C Relative humidity:10 % to 90 % Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 3
24、0 08:18:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 blank Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4737-3.4:1978 BSI 12-1998 Standards publications referred to BS 4737, Specification for intruder alarm systems in buildings. BS
25、4737-1, Requirements for systems with audible signalling only. BS 4737-1.1, Installation. BS 4737-1.2, Maintenance and records2). BS 4737-2, Requirements for systems with remote signalling. BS 4737-2.1, Installation. BS 4737-2.2, Maintenance and records. BS 4737-3, Requirements for detection devices
26、2). BS 4737-3.1, Continuous wiring. BS 4737-3.2, Foil on glass. BS 4737-3.3, Protective switches. BS 4737-3.5, Ultrasonic movement detectors. BS 4737-3.6, Acoustic detectors. BS 4737-3.7, Passive infra-red detectors. BS 4737-3.8, Volumetric capacitive detectors. BS 4737-3.9, Pressure mats. BS 4737-3
27、.10, Vibration detectors. BS 4737-3.11, Rigid printed-circuit wiring. BS 4737-3.12, Beam interruption detectors. BS 4737-3.13, Capacitive proximity detectors. BS 4737-3.14, Deliberately operated devices. 2) Referred to in the foreword only. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:1
28、8:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
29、 | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standar
30、ds are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using t
31、his British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically rec
32、eive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI impleme
33、ntation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic info
34、rmation services are also available which give details on all its products and services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of stand
35、ards. For details of these and other benefits contact Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted
36、 under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of i
37、mplementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
链接地址:https://www.31doc.com/p-3772258.html