1、 KSKSKSKS KS C IEC 61828SKSKSKS KSKSKS SKSKS KSKS SKS KS KS C IEC 61828: 2005 2005 12 30 C IEC 61828: 2005 ( ) ( ) ( ) ( ) : : 2005 12 30 2005 1167 : : ( ) ( 02 509 726770) . 7 5 , . C IEC 61828: 2005 1 1. 1 2. 1 3. 1 3.1 1 3.1.1 2 3.1.2 2 3.1.3 2 3.1.4 2 3.1.5 3 3.1.6 ( ) 3 3.2 3 3.2.1 3 3.2.2 3 3.
2、3 4 3.3.1 4 3.3.2 5 4. 5 4.1 5 4.2 5 5. 11 6. 12 6.1 12 6.2 13 6.3 14 6.4 15 A( ) / 24 B( ) 28 C( ) 31 32 33 i ICS 17.140.50 KS C IEC 61828: 2005Ultrasonics Focusing transducers Definitions and measurement methods for the transmitted fields 2001 1 IEC 61828 Ultrasonics Focusing transducers Definitio
3、ns and measurement methods for the transmitted fields . 1. . , . . . (0.540 MHz) . . (excitation) . . . , . , . 2. . . KS C IEC 61102: 2004 0.5 MHz15 MHz KS C IEC 61157: 2004 KS C IEC 61689: 2005 0.5 MHz 5 MHz IEC 60050 801: 1994 International Electrotechnical Vocabulary(IEV) Chapter 801: Acoustics
4、and electroacoustics 3. 4. 6. . 3.1 “ ” . “ ” ( ) C IEC 61828: 2005 . , 4 6 dB 1/2 . 4.2.33 . 3.1.1 , 1 . 1 R . cL RLENS . cW cL . , (cW/cL ) n 1 . , (n 1) RLENS . . n 1 . 3.1.2 , . , , , , . . . . , . “ ” . , 6. . “ ” 6. . 2 . 4. , 3.1.5 . 3.1.3 . , (遠 ) . , . , (面 ) . . ( 7 ). . 3.1.4 . , “ ” “ ”
5、, . “ , ” “ ” . 3.3 A 3 b) , 4 . . 2 C IEC 61828: 2005 . ( 5 ) , 1 , 2 6 dB . ( ) ( 2 ), . , , ( ) 20 dB 1 6 dB . , z xz yz . . 121 121 2 3.1.5 3.1.4 . a) , , . b) . . 6. . ( ) . , . 3.1.6 ( ) KS C IEC 61689 “ ” . . . 6 dB . , (高 ) “ ” . 3.2 3.1 . , . 3.2.1 , . (KS C IEC 61102 3.33 ) . , . , . . 3.2
6、.2 . A . . . . , . 3 C IEC 61828: 2005 (KS C IEC 61102 3.25) 0.2 . 3.3 4.2 . 1 , 1 . A . 4.2 . . . , . , . 2 . 3.3.1 . . . 6 dB , . FzFzz+=TTmin (1) zT: , F: A, (A.11c) . . , z , ze (A.8) A . Fzzz=1e(z F F ) (2) ( ) . , (2) . . (2) , . . 3 b) , . zNTD, Fzz111TNTD+= (3) 4 C IEC 61828: 2005 zFTD . Fzz111TFTD+= (4) A (A.11) . 3.3.2 . . ( ) . . ( ) . , . . ( ), ( ), ( ) (sweep)