{"id":55861,"date":"2022-04-26T04:48:26","date_gmt":"2022-04-26T09:48:26","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/is-there-a-way-through-which-a-piezo-transducer-can-drive-with-a-square-wave\/"},"modified":"2025-01-21T07:25:17","modified_gmt":"2025-01-21T12:25:17","slug":"is-there-a-way-through-which-a-piezo-transducer-can-drive-with-a-square-wave","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/is-there-a-way-through-which-a-piezo-transducer-can-drive-with-a-square-wave\/","title":{"rendered":"\u0110i\u1ec1u khi\u1ec3n \u00e1p \u0111i\u1ec7n b\u1eb1ng s\u00f3ng vu\u00f4ng: Kh\u1ea3 thi?"},"content":{"rendered":"<p>Vi\u1ec7c s\u1eed d\u1ee5ng s\u00f3ng vu\u00f4ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n (piezo transducer) l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi, n\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, l\u00e0 c\u00f3. Tuy nhi\u00ean, vi\u1ec7c \u00e1p d\u1ee5ng s\u00f3ng vu\u00f4ng c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng s\u00f3ng vu\u00f4ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n piezo transducer, bao g\u1ed3m c\u1ea3 \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 c\u00e1c l\u01b0u \u00fd quan tr\u1ecdng.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Piezo v\u1edbi s\u00f3ng vu\u00f4ng<\/h3>\n<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, t\u1ee9c l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, bi\u1ebfn \u0111\u1ed5i \u0111i\u1ec7n \u00e1p th\u00e0nh bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc. Khi \u00e1p d\u1ee5ng s\u00f3ng vu\u00f4ng, \u0111i\u1ec7n \u00e1p thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t gi\u1eefa hai m\u1ee9c, khi\u1ebfn v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i nhanh ch\u00f3ng. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra dao \u0111\u1ed9ng c\u01a1 h\u1ecdc, v\u00e0 n\u1ebfu t\u1ea7n s\u1ed1 s\u00f3ng vu\u00f4ng tr\u00f9ng v\u1edbi t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng s\u1ebd \u0111\u1ea1t c\u1ef1c \u0111\u1ea1i.<\/p>\n<h3>\u01afu \u0111i\u1ec3m c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng s\u00f3ng vu\u00f4ng<\/h3>\n<p>S\u00f3ng vu\u00f4ng d\u1ec5 t\u1ea1o ra v\u00e0 \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed \u0111\u01a1n gi\u1ea3n. Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i gi\u1eefa hai m\u1ee9c \u0111i\u1ec7n \u00e1p r\u00f5 r\u00e0ng gi\u00fap gi\u1ea3m thi\u1ec3u nhi\u1ec5u v\u00e0 t\u0103ng \u0111\u1ed9 ch\u00ednh x\u00e1c trong \u0111i\u1ec1u khi\u1ec3n.  \u0110\u1eb7c bi\u1ec7t, trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi chuy\u1ec3n \u0111\u1ed9ng nhanh v\u00e0 ch\u00ednh x\u00e1c, s\u00f3ng vu\u00f4ng cho th\u1ea5y hi\u1ec7u qu\u1ea3 r\u00f5 r\u1ec7t.<\/p>\n<h3>Nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf<\/h3>\n<p>M\u1eb7c d\u00f9 c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m, vi\u1ec7c s\u1eed d\u1ee5ng s\u00f3ng vu\u00f4ng c\u0169ng mang \u0111\u1ebfn m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf. S\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n \u00e1p \u0111\u1ed9t ng\u1ed9t c\u00f3 th\u1ec3 g\u00e2y ra s\u1ed1c c\u01a1 h\u1ecdc cho b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, d\u1eabn \u0111\u1ebfn gi\u1ea3m tu\u1ed5i th\u1ecd v\u00e0 th\u1eadm ch\u00ed h\u1ecfng h\u00f3c.  Ngo\u00e0i ra, s\u00f3ng vu\u00f4ng ch\u1ee9a nhi\u1ec1u h\u00e0i b\u1eadc cao, c\u00f3 th\u1ec3 k\u00edch th\u00edch c\u00e1c ch\u1ebf \u0111\u1ed9 dao \u0111\u1ed9ng kh\u00f4ng mong mu\u1ed1n, g\u00e2y ra ti\u1ebfng \u1ed3n v\u00e0 gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/p>\n<h3>C\u00e1c k\u1ef9 thu\u1eadt gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c<\/h3>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c c\u1ee7a s\u00f3ng vu\u00f4ng, c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 k\u1ef9 thu\u1eadt nh\u01b0:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>K\u1ef9 thu\u1eadt<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>L\u1ecdc<\/td>\n<td>S\u1eed d\u1ee5ng b\u1ed9 l\u1ecdc \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c h\u00e0i b\u1eadc cao trong s\u00f3ng vu\u00f4ng.<\/td>\n<td>Gi\u1ea3m nhi\u1ec5u v\u00e0 dao \u0111\u1ed9ng kh\u00f4ng mong mu\u1ed1n.<\/td>\n<td>C\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng.<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec1u khi\u1ec3n bi\u00ean \u0111\u1ed9<\/td>\n<td>\u0110i\u1ec1u ch\u1ec9nh bi\u00ean \u0111\u1ed9 s\u00f3ng vu\u00f4ng \u0111\u1ec3 gi\u1ea3m s\u1ed1c c\u01a1 h\u1ecdc.<\/td>\n<td>K\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i.<\/td>\n<td>C\u00f3 th\u1ec3 gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec1u khi\u1ec3n t\u1ea7n s\u1ed1<\/td>\n<td>Ch\u1ecdn t\u1ea7n s\u1ed1 s\u00f3ng vu\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i.<\/td>\n<td>T\u1ed1i \u01b0u h\u00f3a bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng.<\/td>\n<td>\u0110\u00f2i h\u1ecfi hi\u1ec7u ch\u1ec9nh ch\u00ednh x\u00e1c.<\/td>\n<\/tr>\n<tr>\n<td>S\u1eed d\u1ee5ng driver chuy\u00ean d\u1ee5ng<\/td>\n<td>S\u1eed d\u1ee5ng driver \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho piezo transducer.<\/td>\n<td>T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd.<\/td>\n<td>T\u0103ng chi ph\u00ed.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a Piezo \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng s\u00f3ng vu\u00f4ng<\/h3>\n<p>Piezo transducer \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng s\u00f3ng vu\u00f4ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb in phun, si\u00eau \u00e2m, \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ecbnh v\u1ecb v\u00e0 \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c.  V\u00ed d\u1ee5, trong l\u0129nh v\u1ef1c si\u00eau \u00e2m, vi\u1ec7c s\u1eed d\u1ee5ng s\u00f3ng vu\u00f4ng cho ph\u00e9p t\u1ea1o ra c\u00e1c xung si\u00eau \u00e2m ng\u1eafn v\u00e0 m\u1ea1nh, ph\u00f9 h\u1ee3p cho vi\u1ec7c \u0111o kho\u1ea3ng c\u00e1ch v\u00e0 ph\u00e1t hi\u1ec7n v\u1eadt th\u1ec3.  N\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i nh\u1eafc \u0111\u1ebfn m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u trong ng\u1eef c\u1ea3nh si\u00eau \u00e2m, Beijing Ultrasonic l\u00e0 m\u1ed9t v\u00ed d\u1ee5.<\/p>\n<p>T\u00f3m l\u1ea1i, vi\u1ec7c s\u1eed d\u1ee5ng s\u00f3ng vu\u00f4ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n piezo transducer l\u00e0 ho\u00e0n to\u00e0n kh\u1ea3 thi v\u00e0 mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. Tuy nhi\u00ean, c\u1ea7n ph\u1ea3i hi\u1ec3u r\u00f5 v\u1ec1 nh\u1eefng h\u1ea1n ch\u1ebf v\u00e0 \u00e1p d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i. Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa s\u00f3ng vu\u00f4ng v\u00e0 c\u00e1c d\u1ea1ng s\u00f3ng kh\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng \u1ee9ng d\u1ee5ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c s\u1eed d\u1ee5ng s\u00f3ng vu\u00f4ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n (piezo transducer) l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi, n\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, l\u00e0 c\u00f3. Tuy nhi\u00ean, vi\u1ec7c \u00e1p d\u1ee5ng s\u00f3ng vu\u00f4ng c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t<\/p>\n","protected":false},"author":1,"featured_media":24651,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-55861","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\/55861","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=55861"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/55861\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/24651"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=55861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=55861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=55861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}