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[MEAS] DSH 295 Object

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发表于 2012-9-19 15:18 | 显示全部楼层 |阅读模式
广东安规检测
有限公司提供:
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- t8 N$ T. H7 u5 L: H
DSH 2951 }& r% f6 u5 z2 G  _5 c! h1 t" a
Object
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1.2" W8 x" N6 j# ~
61010-1(ed.1);am1;am2# m; f" n1 C1 z+ ~/ g$ H
4 `, Z1 _9 w$ s- m5 y" ?* I  Y

( h+ G* E" A3 Q1 hStandard:
% W2 h' `7 m3 a) Z- U! gIEC 61010-1:1990
& [; Y' T" m* m3 v5 [3 q! I+A1:1992+A2:1995
1 a, W! q# [5 Y: y% L8 mSub clause:
6 V: S  L9 D. p6 k, U2 z. e! d7 q1.2
: E8 [+ \- K) I, GSheet n. 295
5 f% u% b  w. W  N& W, C! q. bPage 1(1)! n/ i) t! H; _% u, j
Subject:
6 O: O4 t* ^% ]' G! f% N) Q" z/ g0 M" aObject
: p7 h, [/ ]0 Q7 QKey words:
) Y8 @6 J1 u: V) d" f0 q* a- Scope" Z% `2 ?/ G" U; o9 q5 ]
- Software Safety9 ^% v' T' A9 x+ t+ t
Decision taken by
1 _8 h# o% R$ w9 `8 iETF3 and confirmed; s' O# R$ H) ]0 k; S
by CTL at its 38th
0 O( z7 W0 M; ?- z( T& j, imeeting, in Toronto
3 b: Q8 b  o2 ?8 u6 v2 @2 Y) WQuestion:+ K5 S' @6 w/ z  q
If safety is dependent on Software, what criteria do laboratories employ to ensure# M8 w( {/ d4 ^( P: g) k  c) P
compliance?* @1 D5 X- U) J* f' l0 z1 w
Decision:
- C9 n( o% I. V1 W; S; z, B1 YSoftware safety is not specifically addressed in IEC 61010-1 at present and therefore, there
: y$ T, ~6 H7 Bare no specific guidelines for this work. A draft collateral standard is in preparation and also
- _! H: L) E) y7 Z0 D/ ]+ xIEC 61508 deals with this topic.6 p3 M( g0 Z) G+ _3 p, u' V# Y
Generally, it is advised that devices should not be dependent on software alone for their  s+ C' O" `1 R$ l$ M) _
safety. There should be a separate independent means provided which acts to prevent a7 i0 ~( o5 z6 \% c
dangerous condition arising.$ Z; G# W/ F8 T7 n2 ~: N: v
Explanation:$ s. N& ~+ h/ F% H2 j
Experience shows that the analysis of software systems to ensure their safe operation is very& {0 S* F2 \  R4 Y$ u: V! }& O
difficult and in practice, can only provide a measure of confidence. Additionally, the
5 N3 u3 m  P+ N' Jmethods of performing the examination are not widely agreed upon and therefore, subject to
) m$ \; Q! I5 l5 \doubt. In these circumstances, it is preferred to adopt safety limit methods known from6 T7 G3 n' v) b* E! l
experience to be effective.3 ?* i$ m* H# q7 G! }# t

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