ࡱ > u w t z u )` R f bjbj { { ^ $ $ $ 8 `+ `+ `+ `+ $, 8 gM j ,- ,- ,- ,- ~- 1 1 1 L L L L L L L $ N h 9Q l L i $ d2 0 ^ 1 d2 d2 L ,- ~- 9 !M n8 n8 n8 d2 l ,- : $ ~- L n8 d2 L n8 n8 , $ n8 f- - 'e `+ 6 n8 ~I 7M 0 gM n8 Q 7 | Q n8 n8 < Q $ F 1 0 E1 " n8 g1 1 1 1 1 L L ^8 1 1 1 gM d2 d2 d2 d2 8 8 8 $ \ 8 8 8 \ 8 8 8 WNL a b V I E W TP X I vgňY~TEeʋe|~ )RQs8lpgRR`s* 1 . -NVNl>eQ6 3 9 8 1 VnS fkIl 4 3 0 3 1 1 Xd:NN㉳QgňY5uP[~TEeʋeǏz-NʋeHesNOvv^x6RNWNL a b V I E W oNTP X I ;`~b/gv5uP[~TEeʋe|~0HQǑ(uP X I ;`~b/gTYSlbcKmՋb/g\'YϑKmSpe0RV[vKmՋpvQ!kO(uL a b V I E W z \~Tv@b gKmSpe N!k'`hQ萷S0PX[N>f:yv^Oncb/gch~QEeʋe~gTEecdel0[~ghf|~wQ gpencS_0KmՋHesؚ0EeʋeQI{Op~[^(ufEeʋe|~d\O{US0:d&^eO/f[gWňY5uP[~TۏLKmՋTʋevt`]wQ0 sQ.͋P X I ;`~ZbNhVEeʋe(W~KmՋ -NVR{|S e.shƋx D e v e l o p m e n t o f F a u l t D i g n o s i s S y s t e m F o r a n E l e c t r o n i c E q u i p m e n t B a s e d o n L a b V I E W a n d P X I F a n L i j u n , W a n g Y o n g j i e L i u H e n g W a n g H a n g ( N o . 6 3 9 8 1 U n i t o f P L A , W u h a n 4 3 0 3 1 1 , C h i n a ) A b s t r a c t : A c c o r d i n g t o t h e p r o b l e m o f l o w e f f i c i e n c y i n t h e p r o c e s s o f f a u l t d i a g n o s i s f o r a c e r t a i n t y p e o f e l e c t r o n i c e q u i p m e n t a f a u l t d i a g n o s i s s y s t e m f o r t h e e l e c t r o n i c e q u i p m e n t b a s e d o n L a b V I E W a n d P X I b u s t e c h n o l o g y i s d e s i g n e d a n d d e v e l o p e d . F i r s t l y , a l a r g e n u m b e r o f m e a s u r e d p a r a m e t e r s a r e s e n t t o f i x e d t e s t p o i n t b y u s i n g P X I b u s t e c h n o l o g y a n d m u l t i - c h a n n e l c o n v e r s i o n t e s t i n g t e c h n o l o g y S e c o n d l y , a l l m e a s u r e d p a r a m e t e r s o f e l e c t r o n i c e q u i p m e n t c a n b e c o l l e c t e d , s t o r e d a n d d i s p l a y e d i n r e a l - t i m e b y t h e L a b V I E W s o f t w a r e t e c h n o l o g y t h e f a u l t d i a g n o s i s s y s t e m d i s p l a y d i a g n o s t i c r e s u l t s a n d m e t h o d s f o r s o l v i n g t h e f a u l t a c c o r d i n g t o t h e t e c h n i c a l s t a n d a r d s . T h e e x p e r i m e n t a l r e s u l t s s h o w t h a t t h e s y s t e m has the advantages of data acquisition with high speed, testing with high efficiency and fault diagnosis with high accuracy. The results of practical application show that, with the operation simpleness and portability, the fault diagnosis system is an ideal tool for testing and diagnosing this electronic equipment. Key words: PXI bus; Virtual instrument; Fault diagnosis; Online test 0 _ vMR[ňY5uP[~TEeʋeel/f~ONXTHQO(u5uSh0:ylhVTN(uOSlcKmՋv[@b gSpeۏLO!kKmՋ\KmՋ~gTb/ghQۏLk_QhKm~g6qT9hnc~T]\OStۏLv^EevRgTcd0ُyel}6qSNW,g[b5uP[~TvSpehKmTEeʋeFONs(WNS\egvEehKmʋeb/g Nv^_'Yz^ N6R~NňY~OO]\O0;NX[(WSpehKm^ba0[~ONXTvb/gRBlؚ0]\OHesNOI{0 @wKmՋeb/g(WňY~OOW_0RN^l^(u[ 1 ] [gWňY5uP[~Tv~OOHes_NBlegؚYUOcؚKm~TSpeS^TEeʋevQnx'`b:NňY~OOvsQ.s0WN_:glxNs^SvZbNhVb/g:N㉳Q N _Ne_ǏxvzTKm~Tv@b gSpeyr'`NSTSpeKmՋpKNvvNsQ|v^x6RvWNL a b V I E W oNTP X I ;`~b/gv5uP[~TEeʋe|~Y_Qnx0W[ NT5uP[~TvY~]\OSpeۏL[eSv^(W~[bKm5uP[~TvEehKmTʋecؚNYysXagNNvňYEeʋeHesOۏNňY~OOb/gvSU\0 1 |~lxNgg 1 . 1 |~i ňY~TEeʋe|~Y[bKmՋYhTUS*N5uP[~T!jbOSSpevꁨRǑƖ0Yt0$ReS[sNRR 1 wQ gKm~T(W]\Or`N@b gOSSpev(W~KmՋՋTꁨREeʋeRYbʋe~gb_bbhۏLX[PbSbpSTewQ gEecdd\Oc[R 2 cEec[R|~oNY9hncEeʋe~g.^R~ONXT_b` Y~T'`0[sEecdc[ 3 YhR)R(u;Nc5uvU S B 5unޏc0RYvOStlcaSv!jbOSeQcSۏLh[b[YpencǑƖSvRhg 4 Ylb_OSvTekǑƖRǑƖ!jblb_OSv g'YE^