4、第五课 在线监测系统

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<p> 1. 2. </p> <p> 3. </p> <p> 4. 5. 6. 7. x i y o 8. y=kx y=f ( x ) f ( x ) .y=f(x , N) N 9. 10. x 0,N 0 </p> <p> 11. - </p> <p> 12. y=f(x , N) y(t)=f[x (t),N (t) ] 13. </p> <p> 14. </p> <p> 15. a 0 ,a 1 , ,a n b 0 ,b 1 , ,b n 16. y ( t ) t t 0 y ( t )= 0 y ( t ) Y ( S ) 17. x y 18. 19. 1. j H ( s ) s H ( j ) 20. 1 : A 0 2 21. 2. </p> <ul><li> t rs 10% 90% </li></ul> <ul><li> t st </li></ul> <p>x t x i y b a t t rs t st y o 22. </p> <p> 23. Data sampling and processing 24. 25. - A/D RAM / ADC 26. A/D 16 ADC 10ns 27. </p> <p> 28. A/D 29. 1. A/D s ns A/D 30. A/D 31. K f ( t ) f * ( n T) f ( t ) f * ( n T) ( t - n T) 32. </p> <ul><li> Unit Sample) </li></ul> <p> 33. f ( t ) | |&gt; M X ( j )=0 s &gt;2 M s = 2 /T f ( t ) f ( n T) n =0, + 1, + 2, 2 M 2 M 34. </p> <ul><li> 2 3 5 </li></ul> <p> 35. = [] A/D R A D 36. n ( FSR ) 2 n ( ) 1LSB= 1/2 n FSR 37. f ( x ) , (1) (2) A/D 1 2 n / 38. 2. A/D dB A/D % dB Nyquist % dB % dB 39. 3. RAM byte -3dB 40. (1) / ADC / ADC 1 2 n 41. (2) ADC / 1 2 n ADC / / 42. (3) / 1 2 n ADC / / ADC ADC 43. 44. 46. (Internet) Intranet (TCP/IP) Database Web 47. 16 8M 16 Mbyte , 6144Mbyte 80G 48. </p> <p> 49. 50. 51. 52. 1 412~416 452~456 380~384 484~488 D 220 kV 152~156 104~108 276~280 292~296 C 220 kV 256~260 252~256 A 388~392 396~400 C 300~304 304~308 A 336~340 320~324 C B 500 kV 116~120 112~116 A 92~96 88~92 C 188~192 184~188 C A 500 kV /kHz /kHz 53. 2 B C 2.8 268~310 0.1 1157~1177 B 0.8 249~266 0.2 972~991 A 4.2 180~198 1.5 730~747 A 1.5 110~125 D 80.3 403~427 C 0.1 100~110 B D 4.8 373~396 A 0.1 88~98 B 3.4 317~347 0.3 10~85 ( PR , %) /kHz ( PR , %) /kHz 54. G( )=H( )F( ) f(t) F( ) G( ) g(t) H( ) ! H(u,v) 55. ( ) a , b n n 56. (a) (b) 20dB 57. 1. 58. ( t ) ( A t ) 59. A m m 1 m 2 60. </p> <ul><li> mother wavelet (t) </li></ul> <ul><li> ( ) a a </li></ul> <ul><li> x(t) </li></ul> <ul><li> [ x(t)], (t) </li></ul> <ul><li> a </li></ul> <p>2. C C C d d d a t X(t) 61. </p> <ul><li>1 </li></ul> <ul><li>2 ( ) </li></ul> <ul><li> (t) ( ) </li></ul> <ul><li> (1/a) |a| (a ) </li></ul> <ul><li> a </li></ul> <ul><li>3 (t) ( ) WT : </li></ul> <p> 62. Mexico 63. (a)- (b)- -bior3.7 -11 64. -bior3.7 -11 - 65. 66. 67. , , UHF+VHF UHF , VHF 69. 70. 1. 71. 2. -N 72. 3. -Q-N 73. 4. -0.40 -0.20 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 Jan-00 Feb-00 Mar-00 Apr-00 May-00 Jun-00 Jul-00 Aug-00 Sep-00 - tg % A- B- C- 74. Thank you</p>