{"id":53845,"date":"2022-09-13T16:27:06","date_gmt":"2022-09-13T21:27:06","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-a-spice-model-and-is-it-available-for-piezo-sensors\/"},"modified":"2025-01-21T07:28:25","modified_gmt":"2025-01-21T12:28:25","slug":"what-is-a-spice-model-and-is-it-available-for-piezo-sensors","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-a-spice-model-and-is-it-available-for-piezo-sensors\/","title":{"rendered":"M\u00f4 h\u00ecnh Spice v\u00e0 \u1ee9ng d\u1ee5ng cho c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n?"},"content":{"rendered":"

M\u00f4 h\u00ecnh gia v\u1ecb (Spice Model) l\u00e0 m\u1ed9t m\u00f4 t\u1ea3 m\u1ea1ch \u0111i\u1ec7n c\u1ee7a m\u1ed9t linh ki\u1ec7n \u0111i\u1ec7n t\u1eed, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ph\u1ea7n m\u1ec1m m\u00f4 ph\u1ecfng m\u1ea1ch nh\u01b0 LTSpice, PSpice, hay Multisim. M\u00f4 h\u00ecnh n\u00e0y m\u00f4 ph\u1ecfng h\u00e0nh vi c\u1ee7a linh ki\u1ec7n trong m\u1ea1ch \u0111i\u1ec7n, cho ph\u00e9p c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf v\u00e0 ph\u00e2n t\u00edch m\u1ea1ch m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i ch\u1ebf t\u1ea1o nguy\u00ean m\u1eabu v\u1eadt l\u00fd. \u0110i\u1ec1u n\u00e0y ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 chi ph\u00ed, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t.<\/p>\n

M\u00f4 h\u00ecnh Gia v\u1ecb ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n

M\u00f4 h\u00ecnh gia v\u1ecb th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng ng\u00f4n ng\u1eef netlist, ch\u1ee9a th\u00f4ng tin v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong linh ki\u1ec7n, c\u0169ng nh\u01b0 c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc m\u00f4 t\u1ea3 m\u1ed1i quan h\u1ec7 gi\u1eefa \u0111i\u1ec7n \u00e1p, d\u00f2ng \u0111i\u1ec7n v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 kh\u00e1c. Khi \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o ph\u1ea7n m\u1ec1m m\u00f4 ph\u1ecfng, m\u00f4 h\u00ecnh n\u00e0y s\u1ebd ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c t\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch gi\u1ed1ng nh\u01b0 linh ki\u1ec7n th\u1ef1c t\u1ebf.<\/p>\n

M\u00f4 h\u00ecnh Gia v\u1ecb cho c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n<\/h3>\n

C\u00e2u h\u1ecfi \u0111\u1eb7t ra l\u00e0 li\u1ec7u c\u00f3 m\u00f4 h\u00ecnh gia v\u1ecb cho c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n hay kh\u00f4ng. C\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t lo\u1ea1i c\u1ea3m bi\u1ebfn chuy\u1ec3n \u0111\u1ed5i \u00e1p l\u1ef1c c\u01a1 h\u1ecdc th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. Do t\u00ednh ch\u1ea5t \u0111\u1eb7c bi\u1ec7t n\u00e0y, vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a ch\u00fang ph\u1ee9c t\u1ea1p h\u01a1n so v\u1edbi c\u00e1c linh ki\u1ec7n th\u1ee5 \u0111\u1ed9ng th\u00f4ng th\u01b0\u1eddng. M\u1eb7c d\u00f9 kh\u00f4ng c\u00f3 m\u1ed9t m\u00f4 h\u00ecnh gia v\u1ecb "chu\u1ea9n" chung cho t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n, vi\u1ec7c t\u1ea1o ra m\u1ed9t m\u00f4 h\u00ecnh ri\u00eang cho m\u1ed9t c\u1ea3m bi\u1ebfn c\u1ee5 th\u1ec3 l\u00e0 ho\u00e0n to\u00e0n kh\u1ea3 thi.<\/p>\n

X\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh Gia v\u1ecb cho c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n<\/h3>\n

Vi\u1ec7c x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh gia v\u1ecb cho c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n th\u01b0\u1eddng d\u1ef1a tr\u00ean d\u1eef li\u1ec7u t\u1eeb b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt (datasheet) c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t. C\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t bao g\u1ed3m \u0111i\u1ec7n dung, \u0111i\u1ec7n tr\u1edf, h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n, v\u00e0 t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng. \u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng \u0111\u01a1n gi\u1ea3n, c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a nh\u01b0 m\u1ed9t t\u1ee5 \u0111i\u1ec7n v\u1edbi \u0111i\u1ec7n dung t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao h\u01a1n, m\u00f4 h\u00ecnh c\u1ea7n ph\u1ea3i ph\u1ee9c t\u1ea1p h\u01a1n, c\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n nh\u01b0 \u0111i\u1ec7n tr\u1edf, cu\u1ed9n c\u1ea3m, v\u00e0 ngu\u1ed3n \u0111i\u1ec7n \u00e1p \u0111i\u1ec1u khi\u1ec3n.<\/p>\n\n\n\n\n\n\n\n\n
Th\u00f4ng s\u1ed1<\/th>\nM\u00f4 t\u1ea3<\/th>\nV\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n
\u0110i\u1ec7n dung (C)<\/td>\n\u0110i\u1ec7n dung c\u1ee7a c\u1ea3m bi\u1ebfn<\/td>\n10nF<\/td>\n<\/tr>\n
\u0110i\u1ec7n tr\u1edf (R)<\/td>\n\u0110i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n c\u1ee7a c\u1ea3m bi\u1ebfn<\/td>\n100M\u03a9<\/td>\n<\/tr>\n
H\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n (d)<\/td>\nH\u1ec7 s\u1ed1 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa \u00e1p l\u1ef1c v\u00e0 \u0111i\u1ec7n \u00e1p<\/td>\n30pC\/N<\/td>\n<\/tr>\n
T\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng (f)<\/td>\nT\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng c\u01a1 h\u1ecdc c\u1ee7a c\u1ea3m bi\u1ebfn<\/td>\n10kHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Kh\u00f3 kh\u0103n khi x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh Gia v\u1ecb cho c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n<\/h3>\n

Vi\u1ec7c x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh gia v\u1ecb ch\u00ednh x\u00e1c cho c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n c\u00f3 th\u1ec3 g\u1eb7p m\u1ed9t s\u1ed1 kh\u00f3 kh\u0103n. \u0110\u1eb7c t\u00ednh c\u1ee7a c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n c\u00f3 th\u1ec3 thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m, v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng kh\u00e1c. H\u01a1n n\u1eefa, c\u00e1c th\u00f4ng s\u1ed1 trong datasheet th\u01b0\u1eddng ch\u1ec9 l\u00e0 gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh, v\u00e0 c\u00f3 th\u1ec3 c\u00f3 s\u1ef1 sai l\u1ec7ch gi\u1eefa c\u00e1c c\u1ea3m bi\u1ebfn kh\u00e1c nhau c\u00f9ng lo\u1ea1i. V\u00ed d\u1ee5, n\u1ebfu \u0111ang l\u00e0m vi\u1ec7c v\u1edbi c\u1ea3m bi\u1ebfn si\u00eau \u00e2m, v\u00e0 n\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn th\u01b0\u01a1ng hi\u1ec7u c\u1ee5 th\u1ec3, h\u00e3y \u01b0u ti\u00ean s\u1eed d\u1ee5ng Beijing Ultrasonic.<\/p>\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c \u0111\u1ec3 m\u00f4 ph\u1ecfng c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n<\/h3>\n

Ngo\u00e0i m\u00f4 h\u00ecnh gia v\u1ecb, c\u00f2n c\u00f3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c \u0111\u1ec3 m\u00f4 ph\u1ecfng c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n, ch\u1eb3ng h\u1ea1n nh\u01b0 s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m ph\u1ea7n t\u1eed h\u1eefu h\u1ea1n (FEM). C\u00e1c ph\u1ea7n m\u1ec1m FEM cho ph\u00e9p m\u00f4 ph\u1ecfng chi ti\u1ebft h\u01a1n v\u1ec1 h\u00e0nh vi c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n c\u1ee7a c\u1ea3m bi\u1ebfn.<\/p>\n

T\u00f3m l\u1ea1i, vi\u1ec7c t\u00ecm ki\u1ebfm m\u1ed9t m\u00f4 h\u00ecnh gia v\u1ecb s\u1eb5n c\u00f3 cho c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n n\u00f3i chung l\u00e0 kh\u00f3 kh\u0103n. Tuy nhi\u00ean, vi\u1ec7c t\u1ef1 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00f4 ph\u1ecfng kh\u00e1c l\u00e0 ho\u00e0n to\u00e0n kh\u1ea3 thi, t\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 ph\u1ee9c t\u1ea1p c\u1ee7a \u1ee9ng d\u1ee5ng. Vi\u1ec7c hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c th\u00f4ng s\u1ed1 c\u1ee7a c\u1ea3m bi\u1ebfn v\u00e0 c\u00e1c nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a m\u00f4 h\u00ecnh gia v\u1ecb s\u1ebd gi\u00fap cho qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng v\u00e0 s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u00f4 h\u00ecnh gia v\u1ecb (Spice Model) l\u00e0 m\u1ed9t m\u00f4 t\u1ea3 m\u1ea1ch \u0111i\u1ec7n c\u1ee7a m\u1ed9t linh ki\u1ec7n \u0111i\u1ec7n t\u1eed, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ph\u1ea7n m\u1ec1m m\u00f4 ph\u1ecfng m\u1ea1ch nh\u01b0 LTSpice, PSpice, hay Multisim. M\u00f4 h\u00ecnh n\u00e0y m\u00f4 ph\u1ecfng h\u00e0nh vi c\u1ee7a linh ki\u1ec7n trong m\u1ea1ch \u0111i\u1ec7n, cho ph\u00e9p c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf v\u00e0 ph\u00e2n<\/p>\n","protected":false},"author":1,"featured_media":551,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-53845","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/53845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=53845"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/53845\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/551"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=53845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=53845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=53845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}