Daws sensor: nta thiab possibilities

Nyob rau hauv lub neej txhua hnub, qhov sib thooj sensor yog siv txhua txhia qhov chaw. Nyob rau lub tsheb nws yuav pab nrog chaw nres tsheb, nyob rau hauv conveyor lem lub zog ntawm cov khoom nyob rau hauv niaj hnub xov tooj locks lub keypad tom qab daim ntawv thov ntawm cov ntaus ntawv mus rau koj lub pob ntseg. Nyob rau hauv lub neej txhua hnub, nws yog ib tug txuj ci tseem ceeb ntawm technology, dhau lawm, tau pom nws qhov chaw. Tej khoom siv no yog ntsia tau rau hauv qhov chaw ntawm tus tes hloov qhov, piv txwv li, nyob rau hauv txoj kev. Sai li sai tau raws li koj tuaj mus rau lub tsev, lub teeb yeej puv, thiab tom qab ib co sij hawm so. Nyob rau hauv kev ruaj ntseg tshuab nws yog tsis yooj yim sua ua tsis tau sensors.

Paub qhov txawv sib thooj Sensors hom: capacitive, inductive, kho qhov muag, ultrasonic, microwave, magnetically, thiab lwm yam pyrometric Tso zis siv koom ib qho kev ntaus ntawv nyob li nws cov kev khiav hauj lwm hauv paus ntsiab lus.

Capacitive sensor mus kom ze no mas siv nyob rau hauv kev ruaj ntseg tshuab vim hais tias nws detects cov mus kom ze ntawm ib tug kwv thiab kis tau nws tsis tau. Qhov no distinguishes nws los ntawm cov ultrasonic los yog infrared analogs tsoov deb uas yog nyob xav rau ntawm qhov chaw ntawm tus kwv. Piv txwv li, ib tug infrared sib thooj sensor teb thermal - infrared - beams. Ultrasonic pab kiag li lawm emit thawj, thiab ces tau txais lub thaws rov los rays ntawm tus nto. Los ntawm lub hauv paus ntsiab lus ntawm cov lag luam, qhov no sib thooj sensor yog heev uas zoo sib xws rau cov locator. Thiab zoo li tag nrho cov zoo, los ntawm cov txee reflected teeb liab yog zoo, tab sis los ntawm qhov muag - tsis heev. Thiab lub attacker yuav bypass rau nws, cia li muab rau ib yam dab tsi muag muag. Vim li no, nws yog ib qhov zoo tshaj plaws los mus siv ib tug capacitive hom sensors, tshwj xeeb tshaj yog nyob rau hauv lub taw pab kiag li lawm rau kev tiv thaiv ntawm ib qho tseem ceeb thiab loj yam khoom. Nyob rau hauv cov ntaub ntawv no, lub kav hlau txais xov hlau nyob rau hauv daim ntawv ntawm ib tug horizontally mounted rau lub laj kab thiab muaj kev cob cog mus rau lub ntsiab chav tsev los ntawm ib tug me me muaj peev xwm capacitor.

Capacitive sensors kuj tuaj nyob rau hauv ob peb hom:

1. Sensors rau lub capacitors. Hais tias lub xeem schemes yog rhiab ib feem ntawm lub ntaus ntawv. Qhov no hom yog siv qhov twg tsis yuav tsum tau kev tiv thaiv thiab siab rhiab heev, piv txwv li, nyob rau hauv lub Ceeb toom mus rau kov hlau tej khoom.

2. Capacitive sensors siv zaus tswj Circuit Court. Qhov no hom ntawm ntaus ntawv tsawg raug rau xov tooj cua cuam thiab crosstalk tshaj li nrog capacitors. Qhov no daim ntawv yuav siv tau nyob rau hauv cov tsev neeg rau xa nyob rau hauv lub teeb, thiab li ntawm. N.

3. Cov differential-capacitive sensor. Lawv txawv los ntawm lub saum toj no nyob rau hauv hais tias lawv muaj ob tug antennas es tsis txhob ntawm ib tug, uas muab hluav los ntawm cov huab cua (nag, daus, los nag, te thiab cov zoo li. D.). Lawv teb ntawm daim ntawv thov yog txawv los ntawm sensors rau lub LC-Circuit Court. Qhov txawv tsuas yog tias koj yuav tsum nruab ib kav hlau txais xov.

4. resonant Capacitive sensors. txhais lub teeb liab tshwm sim nyob rau hauv lub tswv yim Circuit Court, uas yog nyob rau hauv ib tug ib nrab kauj xeev nrog hwm rau high-zaus teeb liab generator. Vim nws yog kev cob cog rua Circuit Court siv ib tug me me muaj peev xwm ntawm ib tug capacitor (lub caij yuav tsum tau rau kuj nyob rau hauv lub Circuit Court). Tej sensors yuav siv tau ob qho tib si nyob rau hauv lub teb ntawm ntug zos thiab nyob rau hauv cheeb tsam nroog, tab sis tsis dhau ze kom haib xov tooj cua qhov chaw.