{"id":482839,"date":"2025-08-19T15:35:52","date_gmt":"2025-08-19T08:35:52","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=482839"},"modified":"2025-08-19T15:35:52","modified_gmt":"2025-08-19T08:35:52","slug":"cam-bien-tiem-can","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/cam-bien-tiem-can\/","title":{"rendered":"C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn tr\u00ean \u0111i\u1ec7n tho\u1ea1i l\u00e0 g\u00ec? Ch\u1ee9c n\u0103ng v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng"},"content":{"rendered":"

Trong th\u1ebf gi\u1edbi smartphone hi\u1ec7n nay, h\u1ea7u h\u1ebft c\u00e1c m\u1eabu \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh \u0111\u1ec1u \u0111\u01b0\u1ee3c trang b\u1ecb h\u00e0ng lo\u1ea1t c\u1ea3m bi\u1ebfn \u0111\u1ec3 h\u1ed7 tr\u1ee3 ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t trong s\u1ed1 \u0111\u00f3 l\u00e0 c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn<\/strong>, b\u1ed9 ph\u1eadn nh\u1ecf b\u00e9 nh\u01b0ng l\u1ea1i c\u00f3 vai tr\u00f2 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c mang \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m m\u01b0\u1ee3t m\u00e0 v\u00e0 an to\u00e0n khi s\u1eed d\u1ee5ng. D\u00f9 ho\u1ea1t \u0111\u1ed9ng \u00e2m th\u1ea7m \u1edf ph\u00eda sau, c\u1ea3m bi\u1ebfn l\u1ea1i gi\u00fap ti\u1ebft ki\u1ec7m pin, ng\u0103n ch\u1eb7n thao t\u00e1c nh\u1ea7m v\u00e0 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 ti\u1ec7n l\u1ee3i. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5 c\u1ea3m bi\u1ebfn n\u00e0y l\u00e0 g\u00ec, n\u1eb1m \u1edf \u0111\u00e2u, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng ra sao c\u0169ng nh\u01b0 nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft m\u1ecdi kh\u00eda c\u1ea1nh v\u1ec1 c\u1ea3m bi\u1ebfn tr\u00ean \u0111i\u1ec7n tho\u1ea1i.<\/p>\n

C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn tr\u00ean \u0111i\u1ec7n tho\u1ea1i l\u00e0 g\u00ec? \u1ede v\u1ecb tr\u00ed n\u00e0o?<\/h2>\n

C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn (Proximity Sensor) l\u00e0 m\u1ed9t lo\u1ea1i c\u1ea3m bi\u1ebfn \u0111i\u1ec7n t\u1eed \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p trong \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u1edbi nhi\u1ec7m v\u1ee5 ph\u00e1t hi\u1ec7n s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 g\u1ea7n n\u00f3 m\u00e0 kh\u00f4ng c\u1ea7n ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp. N\u00f3i m\u1ed9t c\u00e1ch d\u1ec5 hi\u1ec3u, c\u1ea3m bi\u1ebfn n\u00e0y gi\u00fap m\u00e1y \u201cbi\u1ebft\u201d khi n\u00e0o b\u1ea1n \u0111\u01b0a \u0111i\u1ec7n tho\u1ea1i l\u1ea1i g\u1ea7n m\u1eb7t, tai ho\u1eb7c b\u1ea5t k\u1ef3 v\u1eadt th\u1ec3 n\u00e0o c\u00f3 kho\u1ea3ng c\u00e1ch ng\u1eafn, t\u1eeb \u0111\u00f3 \u0111i\u1ec1u ch\u1ec9nh m\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng.<\/p>\n

\"cam-bien-tiem-can-tren-dien-thoai-la-gi-chuc-nang-va-nguyen-ly-hoat-dong-1\"<\/picture><\/p>\n

Tr\u00ean h\u1ea7u h\u1ebft c\u00e1c d\u00f2ng smartphone, Proximity Sensor th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ph\u00eda tr\u01b0\u1edbc \u0111i\u1ec7n tho\u1ea1i, ngay tr\u00ean m\u00e0n h\u00ecnh g\u1ea7n c\u1ee5m loa tho\u1ea1i. Khi b\u1ea1n th\u1ef1c hi\u1ec7n cu\u1ed9c g\u1ecdi v\u00e0 \u0111\u01b0a \u0111i\u1ec7n tho\u1ea1i l\u00ean tai, c\u1ea3m bi\u1ebfn s\u1ebd ngay l\u1eadp t\u1ee9c nh\u1eadn di\u1ec7n kho\u1ea3ng c\u00e1ch g\u1ea7n, sau \u0111\u00f3 t\u1eaft m\u00e0n h\u00ecnh \u0111\u1ec3 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng c\u0169ng nh\u01b0 ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng v\u00f4 t\u00ecnh ch\u1ea1m v\u00e0o n\u00fat \u1ea3o tr\u00ean m\u00e0n h\u00ecnh.<\/p>\n

V\u1ecb tr\u00ed ch\u00ednh x\u00e1c c\u1ee7a c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y theo t\u1eebng h\u00e3ng s\u1ea3n xu\u1ea5t v\u00e0 t\u1eebng d\u00f2ng m\u00e1y. M\u1ed9t s\u1ed1 \u0111i\u1ec7n tho\u1ea1i cao c\u1ea5p c\u00f2n thi\u1ebft k\u1ebf c\u1ea3m bi\u1ebfn n\u1eb1m \u1ea9n d\u01b0\u1edbi m\u00e0n h\u00ecnh, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng kh\u00f3 nh\u1eadn bi\u1ebft b\u1eb1ng m\u1eaft th\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y v\u1eeba \u0111\u1ea3m b\u1ea3o t\u00ednh th\u1ea9m m\u1ef9, v\u1eeba duy tr\u00ec \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng quan tr\u1ecdng c\u1ee7a c\u1ea3m bi\u1ebfn m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft k\u1ebf m\u1ecfng g\u1ecdn c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n

Ph\u00e2n lo\u1ea1i c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn<\/h2>\n

C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn tr\u00ean \u0111i\u1ec7n tho\u1ea1i th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00f4ng ngh\u1ec7 \u1ee9ng d\u1ee5ng, c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n

C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn h\u1ed3ng ngo\u1ea1i (IR Proximity Sensor): <\/strong>\u0110\u00e2y l\u00e0 lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay tr\u00ean smartphone. C\u1ea3m bi\u1ebfn ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ph\u00e1t ra tia h\u1ed3ng ngo\u1ea1i t\u1eeb \u0111\u00e8n LED, sau \u0111\u00f3 nh\u1eadn l\u1ea1i tia ph\u1ea3n x\u1ea1 t\u1eeb v\u1eadt th\u1ec3 g\u1ea7n (v\u00ed d\u1ee5 nh\u01b0 tai ho\u1eb7c m\u1eb7t ng\u01b0\u1eddi khi nghe g\u1ecdi). D\u1ef1a tr\u00ean c\u01b0\u1eddng \u0111\u1ed9 ph\u1ea3n x\u1ea1, \u0111i\u1ec7n tho\u1ea1i x\u00e1c \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch v\u00e0 t\u1ef1 \u0111\u1ed9ng t\u1eaft\/m\u1edf m\u00e0n h\u00ecnh. \u01afu \u0111i\u1ec3m l\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao, ti\u00eau th\u1ee5 \u00edt n\u0103ng l\u01b0\u1ee3ng.<\/p>\n

C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn \u0111i\u1ec7n dung (Capacitive Proximity Sensor): <\/strong>Lo\u1ea1i n\u00e0y ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n dung khi m\u1ed9t v\u1eadt th\u1ec3 ti\u1ebfp c\u1eadn v\u00f9ng c\u1ea3m bi\u1ebfn. N\u00f3 kh\u00e1 gi\u1ed1ng nguy\u00ean l\u00fd c\u1ee7a m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng \u0111i\u1ec7n dung. \u01afu \u0111i\u1ec3m l\u00e0 ph\u1ea3n \u1ee9ng nhanh, kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi \u00e1nh s\u00e1ng m\u00f4i tr\u01b0\u1eddng, nh\u01b0ng chi ph\u00ed s\u1ea3n xu\u1ea5t cao h\u01a1n.<\/p>\n

\"cam-bien-tiem-can-tren-dien-thoai-la-gi-chuc-nang-va-nguyen-ly-hoat-dong-2\"<\/picture><\/p>\n

C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn si\u00eau \u00e2m (Ultrasonic Proximity Sensor): <\/strong>M\u1ed9t s\u1ed1 smartphone cao c\u1ea5p s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 si\u00eau \u00e2m, ph\u00e1t ra s\u00f3ng \u00e2m t\u1ea7n s\u1ed1 cao v\u00e0 \u0111o th\u1eddi gian ph\u1ea3n h\u1ed3i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch. C\u00f4ng ngh\u1ec7 n\u00e0y c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t ngay c\u1ea3 khi m\u00f4i tr\u01b0\u1eddng \u00e1nh s\u00e1ng ph\u1ee9c t\u1ea1p ho\u1eb7c m\u00e0n h\u00ecnh chi\u1ebfm tr\u1ecdn m\u1eb7t tr\u01b0\u1edbc (full vi\u1ec1n).<\/p>\n

C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn k\u1ebft h\u1ee3p (Hybrid Proximity Sensor): <\/strong>\u0110\u00e2y l\u00e0 d\u1ea1ng c\u1ea3m bi\u1ebfn t\u00edch h\u1ee3p nhi\u1ec1u c\u00f4ng ngh\u1ec7 (v\u00ed d\u1ee5: h\u1ed3ng ngo\u1ea1i + \u0111i\u1ec7n dung) \u0111\u1ec3 t\u0103ng \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u1ed5n \u0111\u1ecbnh. C\u00e1c d\u00f2ng flagship th\u01b0\u1eddng s\u1eed d\u1ee5ng lo\u1ea1i n\u00e0y nh\u1eb1m t\u1ed1i \u01b0u tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn tr\u00ean \u0111i\u1ec7n tho\u1ea1i<\/h2>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn tr\u00ean \u0111i\u1ec7n tho\u1ea1i kh\u00e1 \u0111\u01a1n gi\u1ea3n nh\u01b0ng l\u1ea1i c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3. Khi ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0a \u0111i\u1ec7n tho\u1ea1i l\u1ea1i g\u1ea7n tai, c\u1ea3m bi\u1ebfn ph\u00e1t ra t\u00edn hi\u1ec7u (th\u01b0\u1eddng l\u00e0 tia h\u1ed3ng ngo\u1ea1i). N\u1ebfu c\u00f3 v\u1eadt th\u1ec3 \u1edf g\u1ea7n, t\u00edn hi\u1ec7u s\u1ebd ph\u1ea3n x\u1ea1 l\u1ea1i v\u00e0 \u0111\u01b0\u1ee3c b\u1ed9 thu ghi nh\u1eadn. T\u1eeb \u0111\u00f3, h\u1ec7 th\u1ed1ng x\u1eed l\u00fd s\u1ebd hi\u1ec3u r\u1eb1ng kho\u1ea3ng c\u00e1ch gi\u1eefa \u0111i\u1ec7n tho\u1ea1i v\u00e0 v\u1eadt th\u1ec3 (tai ho\u1eb7c m\u1eb7t ng\u01b0\u1eddi) r\u1ea5t ng\u1eafn v\u00e0 l\u1eadp t\u1ee9c \u0111\u01b0a ra l\u1ec7nh t\u1eaft m\u00e0n h\u00ecnh, t\u1ea1m ng\u1eebng c\u00e1c thao t\u00e1c c\u1ea3m \u1ee9ng.<\/p>\n

\"cam-bien-tiem-can-tren-dien-thoai-la-gi-chuc-nang-va-nguyen-ly-hoat-dong-3\"<\/picture><\/p>\n

\u0110\u1ed1i v\u1edbi lo\u1ea1i c\u1ea3m bi\u1ebfn \u0111i\u1ec7n dung, khi m\u1ed9t v\u1eadt th\u1ec3 l\u1ea1i g\u1ea7n, \u0111i\u1ec7n dung gi\u1eefa hai c\u1ef1c c\u1ee7a c\u1ea3m bi\u1ebfn thay \u0111\u1ed5i. S\u1ef1 thay \u0111\u1ed5i n\u00e0y \u0111\u01b0\u1ee3c b\u1ed9 vi x\u1eed l\u00fd trong m\u00e1y ghi nh\u1eadn v\u00e0 chuy\u1ec3n th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n, ch\u1eb3ng h\u1ea1n k\u00edch ho\u1ea1t t\u1eaft m\u00e0n h\u00ecnh. C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng n\u00e0y di\u1ec5n ra trong th\u1eddi gian c\u1ef1c ng\u1eafn, g\u1ea7n nh\u01b0 t\u1ee9c th\u00ec, gi\u00fap ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng g\u1eb7p \u0111\u1ed9 tr\u1ec5 khi chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh n\u00e0y ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng, kh\u00f4ng y\u00eau c\u1ea7u b\u1ea5t k\u1ef3 thao t\u00e1c th\u1ee7 c\u00f4ng n\u00e0o t\u1eeb ph\u00eda ng\u01b0\u1eddi d\u00f9ng.<\/p>\n

Ch\u1ee9c n\u0103ng c\u1ee7a c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn tr\u00ean \u0111i\u1ec7n tho\u1ea1i<\/h2>\n

C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn \u0111\u00f3ng vai tr\u00f2 nh\u1ecf nh\u01b0ng quan tr\u1ecdng trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng smartphone. Tr\u01b0\u1edbc h\u1ebft, ch\u1ee9c n\u0103ng quan tr\u1ecdng nh\u1ea5t c\u1ee7a c\u1ea3m bi\u1ebfn n\u00e0y l\u00e0 t\u1eaft m\u00e0n h\u00ecnh t\u1ef1 \u0111\u1ed9ng khi nghe g\u1ecdi. Khi b\u1ea1n \u00e1p \u0111i\u1ec7n tho\u1ea1i l\u00ean tai, m\u00e0n h\u00ecnh t\u1eaft \u0111i \u0111\u1ec3 ti\u1ebft ki\u1ec7m pin, \u0111\u1ed3ng th\u1eddi tr\u00e1nh vi\u1ec7c v\u00f4 t\u00ecnh ch\u1ea1m v\u00e0o c\u00e1c n\u00fat b\u1ea5m \u1ea3o nh\u01b0 t\u1eaft m\u00e1y, m\u1edf loa ngo\u00e0i hay g\u1eedi tin nh\u1eafn trong khi \u0111\u00e0m tho\u1ea1i. \u0110\u00e2y l\u00e0 t\u00ednh n\u0103ng quen thu\u1ed9c m\u00e0 g\u1ea7n nh\u01b0 ai c\u0169ng t\u1eebng tr\u1ea3i nghi\u1ec7m, nh\u01b0ng kh\u00f4ng ph\u1ea3i ai c\u0169ng bi\u1ebft r\u1eb1ng Proximity Sensor ch\u00ednh l\u00e0 \u201cnh\u00e2n v\u1eadt \u0111\u1ee9ng sau\u201d.<\/p>\n

\"cam-bien-tiem-can-tren-dien-thoai-la-gi-chuc-nang-va-nguyen-ly-hoat-dong-4\"<\/picture><\/p>\n

B\u00ean c\u1ea1nh \u0111\u00f3, c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn c\u00f2n h\u1ed7 tr\u1ee3 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. Trong nh\u1eefng cu\u1ed9c g\u1ecdi k\u00e9o d\u00e0i, vi\u1ec7c t\u1eaft m\u00e0n h\u00ecnh s\u1ebd gi\u00fap \u0111i\u1ec7n tho\u1ea1i duy tr\u00ec th\u1eddi l\u01b0\u1ee3ng pin l\u00e2u h\u01a1n, \u0111\u1ed3ng th\u1eddi gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 m\u00e1y. Kh\u00f4ng ch\u1ec9 v\u1eady, nhi\u1ec1u \u1ee9ng d\u1ee5ng v\u00e0 t\u00ednh n\u0103ng tr\u00ean smartphone hi\u1ec7n nay c\u00f2n khai th\u00e1c Proximity Sensor \u0111\u1ec3 t\u0103ng tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. V\u00ed d\u1ee5, m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng c\u1eed ch\u1ec9 cho ph\u00e9p b\u1ea1n v\u1eaby tay g\u1ea7n m\u00e0n h\u00ecnh \u0111\u1ec3 nh\u1eadn cu\u1ed9c g\u1ecdi, l\u1eadt trang s\u00e1ch \u0111i\u1ec7n t\u1eed ho\u1eb7c chuy\u1ec3n b\u00e0i nh\u1ea1c. T\u1ea5t c\u1ea3 \u0111\u1ec1u c\u00f3 s\u1ef1 \u0111\u00f3ng g\u00f3p t\u1eeb c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn.<\/p>\n

Ngo\u00e0i ra, Proximity Sensor c\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u00ednh n\u0103ng b\u1ea3o m\u1eadt. M\u1ed9t s\u1ed1 d\u00f2ng \u0111i\u1ec7n tho\u1ea1i khi s\u1eed d\u1ee5ng t\u00ednh n\u0103ng m\u1edf kh\u00f3a b\u1eb1ng khu\u00f4n m\u1eb7t s\u1ebd k\u1ebft h\u1ee3p v\u1edbi c\u1ea3m bi\u1ebfn n\u00e0y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh b\u1ea1n \u0111ang c\u1ea7m m\u00e1y \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n, tr\u00e1nh vi\u1ec7c m\u00e1y t\u1ef1 m\u1edf kh\u00f3a khi \u0111\u1eb7t tr\u00ean b\u00e0n.<\/p>\n

M\u1ed9t s\u1ed1 l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u1ec1 c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn tr\u00ean smartphone<\/h2>\n

D\u00f9 h\u1eefu \u00edch, c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn \u0111\u00f4i khi v\u1eabn g\u1eb7p tr\u1ee5c tr\u1eb7c trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. C\u00e1c l\u1ed7i th\u01b0\u1eddng th\u1ea5y c\u00f3 th\u1ec3 g\u00e2y kh\u00f3 ch\u1ecbu cho ng\u01b0\u1eddi d\u00f9ng, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n

M\u00e0n h\u00ecnh kh\u00f4ng t\u1eaft khi nghe g\u1ecdi<\/strong><\/p>\n

Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 c\u1ea3m bi\u1ebfn b\u1ecb b\u1ee5i b\u1ea9n ho\u1eb7c che ch\u1eafn b\u1edfi mi\u1ebfng d\u00e1n c\u01b0\u1eddng l\u1ef1c, khi\u1ebfn t\u00edn hi\u1ec7u h\u1ed3ng ngo\u1ea1i b\u1ecb c\u1ea3n tr\u1edf. Ngo\u00e0i ra, ph\u1ea7n m\u1ec1m h\u1ec7 th\u1ed1ng b\u1ecb l\u1ed7i ho\u1eb7c c\u1ea3m bi\u1ebfn h\u1ecfng c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng n\u00e0y. \u0110\u1ec3 kh\u1eafc ph\u1ee5c, b\u1ea1n n\u00ean v\u1ec7 sinh ph\u1ea7n tr\u00ean m\u00e0n h\u00ecnh n\u01a1i \u0111\u1eb7t c\u1ea3m bi\u1ebfn, th\u00e1o mi\u1ebfng d\u00e1n kh\u00f4ng ph\u00f9 h\u1ee3p ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u00e1y. N\u1ebfu v\u1eabn kh\u00f4ng \u0111\u01b0\u1ee3c, c\u1ea7n mang \u0111\u1ebfn trung t\u00e2m s\u1eeda ch\u1eefa \u0111\u1ec3 ki\u1ec3m tra ph\u1ea7n c\u1ee9ng.<\/p>\n

M\u00e0n h\u00ecnh t\u1eaft \u0111\u1ed9t ng\u1ed9t khi kh\u00f4ng c\u1ea7n thi\u1ebft<\/strong><\/p>\n

\u0110\u00f4i khi, c\u1ea3m bi\u1ebfn qu\u00e1 nh\u1ea1y s\u1ebd khi\u1ebfn m\u00e0n h\u00ecnh t\u1ef1 t\u1eaft d\u00f9 b\u1ea1n ch\u01b0a \u00e1p \u0111i\u1ec7n tho\u1ea1i l\u00ean tai. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 do xung \u0111\u1ed9t ph\u1ea7n m\u1ec1m ho\u1eb7c l\u1ed7i hi\u1ec7u chu\u1ea9n c\u1ea3m bi\u1ebfn. Gi\u1ea3i ph\u00e1p th\u01b0\u1eddng l\u00e0 c\u1eadp nh\u1eadt h\u1ec7 \u0111i\u1ec1u h\u00e0nh, kh\u00f4i ph\u1ee5c c\u00e0i \u0111\u1eb7t g\u1ed1c ho\u1eb7c hi\u1ec7u ch\u1ec9nh l\u1ea1i c\u1ea3m bi\u1ebfn b\u1eb1ng c\u00e1c \u1ee9ng d\u1ee5ng h\u1ed7 tr\u1ee3.<\/p>\n

\u1ee8ng d\u1ee5ng kh\u00f4ng nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c c\u1eed ch\u1ec9<\/strong><\/p>\n

M\u1ed9t s\u1ed1 \u0111i\u1ec7n tho\u1ea1i cho ph\u00e9p \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng c\u1eed ch\u1ec9 qua c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn, nh\u01b0ng khi l\u1ed7i x\u1ea3y ra, m\u00e1y kh\u00f4ng nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c thao t\u00e1c v\u1eaby tay hay che ch\u1eafn. Tr\u01b0\u1eddng h\u1ee3p n\u00e0y th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn ph\u1ea7n m\u1ec1m ho\u1eb7c c\u1ea3m bi\u1ebfn b\u1ecb suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n

\"cam-bien-tiem-can-tren-dien-thoai-la-gi-chuc-nang-va-nguyen-ly-hoat-dong-5\"<\/picture><\/p>\n

Vi\u1ec7c kh\u1eafc ph\u1ee5c l\u1ed7i Proximity Sensor c\u1ea7n th\u1ef1c hi\u1ec7n t\u1eeb d\u1ec5 \u0111\u1ebfn kh\u00f3, b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1c bi\u1ec7n ph\u00e1p v\u1ec7 sinh, ki\u1ec3m tra ph\u1ee5 ki\u1ec7n r\u1ed3i m\u1edbi \u0111\u1ebfn c\u00e0i \u0111\u1eb7t l\u1ea1i h\u1ec7 th\u1ed1ng ho\u1eb7c thay th\u1ebf linh ki\u1ec7n.<\/em><\/p>\n

Khi n\u00e0o c\u1ea7n thay th\u1ebf c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn?<\/h2>\n

Trong \u0111a s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn ch\u1ec9 g\u1eb7p l\u1ed7i nh\u1eb9 v\u00e0 c\u00f3 th\u1ec3 x\u1eed l\u00fd b\u1eb1ng v\u1ec7 sinh ho\u1eb7c c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m. Tuy nhi\u00ean, n\u1ebfu \u0111\u00e3 th\u1eed nhi\u1ec1u c\u00e1ch m\u00e0 c\u1ea3m bi\u1ebfn v\u1eabn kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, l\u00fac \u0111\u00f3 vi\u1ec7c thay th\u1ebf l\u00e0 c\u1ea7n thi\u1ebft.<\/p>\n

B\u1ea1n n\u00ean c\u00e2n nh\u1eafc thay c\u1ea3m bi\u1ebfn khi:<\/p>\n