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1、BRITISH STANDARD BS 4737-3.7: 1978 Specification for Intruder alarm systems in buildings Part 3: Requirements for detection devices Section 3.7 Passive infra-red detectors UDC 696.6:654.924.32:621.317.794 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:30 GMT+00:00 2006, Uncontrolled Co
2、py, (c) BSI BS 4737-3.7:1978 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 30 November 1978 BSI 05-1999 First published April 1971 First revision November 1978 The following
3、 BSI references relate to the work on this standard: Committee reference EEL/27 Draft for comment 74/25543 DC ISBN 0 580 10371 4 Cooperating organizations The Electronic Equipment Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the foll
4、owing Government department and scientific and industrial organizations: British Broadcasting Corporation British Electrical and Allied Manufacturers Association British Radio Equipment Manufacturers Association Cable Television Association of Great Britain Department of Prices and Consumer Protecti
5、on Electrical, Electronic, Telecommunication and Plumbing Union Electricity Supply Industry in England and Wales Electronic Components Board Electronic Engineering Association* Engineering Equipment Users Association Institution of Electronic and Radio Engineers Post Office* Radio and Electronic Com
6、ponent Manufacturers Federation Scientific Instrument Manufacturers Association The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: Association of Burglary Insura
7、nce Surveyors Association of Chief Police Officers British Insurance Association British Railways Board British Security Industry Association Department of the Environment Home Office Independent Burglar Alarm Association Lloyds Syndicates Survey Department Metropolitan Police Ministry of Defence Na
8、tional Supervisory Council for Intruder Alarms Telecommunication Engineering and Manufacturing Association The Committee of London Clearing Bankers on behalf of the Committee of Scottish Clearing Bankers, Co-operative Bank, Central Trustee Savings Bank and Yorkshire Bank Amendments issued since publ
9、ication Amd. No.Date of issueComments 3251March 1980Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4737-3.7:1978 BSI 05-1999i Contents Page Cooperating organizations Inside front cover Foreword ii 1S
10、cope 1 2References1 3Definition1 4Area or volume of coverage1 5Sensitivity1 6Test period1 7Power supply1 6Environment1 9Interference1 10Housing1 Publications referred to Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 47
11、37-3.7:1978 ii BSI 05-1999 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 since the publication of the 1971 edition. It takes account of Amendment No. 1, 1972 (AMD 1064) and of
12、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; Section 1.2: Maintenance and records; Part 2: Requirements for systems with remote signalling; Section 2.1:
13、Installation; Section 2.2: Maintenance and records; Part 3: Requirements for detection devices, consisting of a number of separate Sections (3.1 to 3.15). The specifications for detection devices (including this Section of BS 4737) are to be read in conjunction with Section 1.1 or Section 2.1, as ap
14、propriate. 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. Summary of pages This document
15、 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 (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy:
16、 sheffieldun sheffieldun, na, Thu Nov 30 08:18:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4737-3.7:1978 BSI 05-19991 1 Scope This British Standard specifies the general requirements for passive infra-red detectors to be used in intruder alarm systems in buildings. 2 References The titles of th
17、e publications referred to in this standard are listed on the inside back cover. 3 Definition For the purposes of this British Standard, the following definition applies in addition to those given in BS 4737-1.1 and/or BS 4737-2.1. passive infra-red detector a detection device designed to generate a
18、n alarm condition in response to a change in infra-red radiation level when a person enters and moves in the area or volume of coverage 4 Area or volume of coverage 4.1 The area or volume of coverage of the detector is that area or volume within which the entry and movement tangential to the detecto
19、r 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 causes the detector to generate an alarm condition or to signal to a processing device. The installer shall identify the area or volume of coverage in the equipment record (see 7.1 of BS 4737-2.2:1977).
20、 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 of entry to the premises. Alteration of the position of objects within the area o
21、r volume of coverage may cause significant changes in the area or volume protected. 4.2 A method of indication shall be provided to enable the subscriber to check the area or volume of coverage before the system is closed. 5 Sensitivity The detector shall not generate an alarm condition when a targe
22、t equivalent to a 60 20 kg person, which fills the field of view of the detector, is heated evenly at a rate not greater than 0.1 C/s. 6 Test period Except when immediate connection is needed for urgent security reasons, or when the detector replaces a similar existing unit, the detector shall not b
23、e 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 alarm. 7 Power supply An alarm condition shall be generated if the voltage of the power supply to the detector is reduced sufficiently
24、 to impair the performance of the detector. 8 Environment The requirements of this British Standard shall be met by the detector under any combination of the following environmental conditions. 9 Interference The detector shall be adequately protected against any externally-generated radio-frequency
25、 interference and/or mains-borne interference which may normally be expected to occur within the working environment. 10 Housing The detector and any processing device 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 o
26、perating an anti-tamper device. If the equipment is housed in separate containers, the interconnection(s) shall be electrically protected. Any means for adjusting the equipment shall be enclosed within the container(s). Temperature:0 C to 40 C Relative humidity:10 % to 90 % Licensed Copy: sheffieldu
27、n sheffieldun, na, Thu Nov 30 08:18:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 blank Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 30 08:18:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4737-3.7:1978 BSI 05-1999 Publications referred to BS 4737, Specification for intruder alarm systems
28、 in buildings. BS 4737-1, Requirements for systems with audible signalling only. BS 4737-1.1, Installation. BS 4737-1.2, Maintenance and records1). 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
29、 detection devices1). BS 4737-3.1, Continuous wiring. BS 4737-3.2, Foil on glass. BS 4737-3.3, Protective switches. BS 4737-3.4, Radiowave Doppler detectors. BS 4737-3.5, Ultrasonic movement detectors. BS 4737-3.6, Acoustic detectors. BS 4737-3.8, Volumetric capacitive detectors. BS 4737-3.9, Pressu
30、re mats. BS 4737-3.10, 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. 1) Referred to in the foreword only. Licensed Copy: sheffieldun sheffieldun, n
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