1、 61828 2012 IEC 61828:2001 Ultrasonics Focusing transducers Definitions and measurement methods for the transmitted fields (IDT) 2014 618282012 II 27 2002 . 184- , - 1.02004 -. 1 - - , - 4 2 3 - 29 2012 . 1455- 61828:2001 . - . (IEC 61828:2001 Ultrasonics. Focusing transducers. Definitions and measu
2、rement methods for the transmitted fields). - 1.52004 ( 3.5). - -, 4 1.02012 ( 8). ( 1 ) , -. () - . , (gost.ru) , 2014 , - 618282012 III 1 .1 2 .1 3 2 3.1 2 3.2 4 3.3 5 4 7 4.1 .7 4.2 7 5 . 14 6 15 6.1 . 15 6.2 . 15 6.3 17 6.4 18 () . 28 () 32 C () . 34 () . 35 36 618282012 (IEC 61828:2001) 1 State
3、 system for ensuring the uniformity of measurements. Ultrasonic focusing transducers. General requirements to measurement methods of ultrasound radiation parameters 20140501 1 : - , - ; - , , - , ; - ; - , . , , ( 0,5 40 ) , . , , -, , . - (, ) - . - , (. . ), . , - . - , , , . - , , - . 2 . , - ( )
4、. 618282012 2 60050(801):1994 (IEV). 801. (IEC 60050(801):1994, International Electrotechnical Vocabulary (IEV) Chapter 801: Acoustics and electroacoustics) 61102:1991 - 0,5 15 (IEC 61102:1991, Measurement and characterization of ultrasonic fields using hydrophones in the frequency range 0,5 MHz to
5、15 MHz) 61157:1992 (IEC 61157:1992, Requirements for the declaration of the acoustic output of medical diagnostic ultrasonic equipment) 61689:1996 . . 0,5 5 (IEC 61689:1996, Ultrasonics Physiotherapy systems Performance requirements and methods of measurement in the frequency range 0,5 MHz to 5 MHz)
6、 3 -, 4, , 6. 3.1 -, , - . , , - , - ( ) . , , , , - , ( 6 ) . 4.2.33 . 3.1.1 , , - , 1. - R , R - . , F R -. 1 - , cL, RLENS, -, cw. cw, , cL, . . - n ( cw/ cL) 1. , -, , RLENS, (n-1), . , n 1 , . 3.1.2 , , - , . , , , , - , , . , . , . - , -. , . 618282012 3 - . , , , , . , 6. 6 , - . , , - , -, 2. 4, - 3.1.5. 3.1.3 . , , . - . - . , . , , - (. 7). . 3.1.4 . , - , . , . , 3.3 , - 3b -, 4. , - - , , - . , -: (. 5) , , ( 6 ) ( - ) - . - (. 2) - ( - ) , . - , , ( 6 ) ( ) ( 20
