Hoʻohana nui ʻia nā sensor analog i ka ʻoihana kaumaha, ka ʻoihana māmā, ka textile, ka mahiʻai, ka hana ʻana a me ke kūkulu ʻana, ka hoʻonaʻauao ola i kēlā me kēia lā a me ka noiʻi ʻepekema, a me nā kula ʻē aʻe. Hoʻouna ka sensor analog i kahi hōʻailona hoʻomau, me ka volta, ka manawa, ke kū'ē a me nā mea ʻē aʻe, ka nui o nā ʻāpana i ana ʻia. No ka laʻana, ʻo ka ʻike wela, ka mea ʻike kinoea, ka mea ʻike kaomi a me nā mea ʻē aʻe he mea ʻike maʻamau analog.
E hālāwai pū ka sensor quantity analog i ka hoʻopili ʻana i ka wā e hoʻouna ai i nā hōʻailona, ma muli o nā kumu aʻe:
1.Electrostatic induced interference
ʻO ka induction electrostatic ma muli o ka noho ʻana o ka capacitance parasitic ma waena o ʻelua mau lālā lālā a i ʻole nā ʻāpana, no laila e hoʻoneʻe ʻia ka uku ma kekahi lālā i kahi lālā ʻē aʻe ma o ka capacitance parasitic, i kekahi manawa i kapa ʻia ʻo capacitive coupling.
2, Electromagnetic induction interference
Ke loaʻa ka inductance like ma waena o nā kaʻapuni ʻelua, hoʻololi ʻia ka hoʻololi ʻana o ke au i hoʻokahi kaapuni i kekahi ma o ke kahua magnetic, kahi mea i kapa ʻia ʻo electromagnetic induction. ʻIke pinepine ʻia kēia kūlana i ka hoʻohana ʻana i nā sensor, pono e uku kūikawā.
3, Pono ka leakage flu e keakea
Ma muli o ka maikaʻi ʻole o ka insulation o ka bracket component, post terminal, printed circuit board, internal dielectric a i ʻole shell of capacitor i loko o ke kaapuni uila, ʻoi aku ka nui o ka hoʻonui ʻana o ka haʻahaʻa i loko o ke kaiapuni noiʻi o ka sensor, e emi ana ka pale ʻana o ka insulator, a a laila e piʻi aʻe ke au leakage, no laila e hoʻopilikia ai. He koʻikoʻi loa ka hopena i ka wā e kahe ai ke au leakage i ka pae hoʻokomo o ke kaapuni ana.
4, Hoʻopilikia i ka radio frequency interference
ʻO ka nui o ka haunaele i hoʻomaka ʻia e ka hoʻomaka ʻana a me ka hoʻōki ʻana o nā lako mana nui a me ka interference harmonic kiʻekiʻe.
5. ʻO nā kumu hoʻopilikia ʻē aʻe
ʻO ka mea nui e pili ana i ka hana ʻino o ka ʻōnaehana, e like me ke one, ka lepo, ka haʻahaʻa kiʻekiʻe, ka wela kiʻekiʻe, nā mea kemika a me nā ʻano ʻino ʻē aʻe. I loko o ke kaiapuni paʻakikī, e hoʻopilikia koʻikoʻi ia i nā hana o ka sensor, e like me ka paʻa ʻana o ka probe e ka lepo, lepo a me nā mea ʻāpana, e hoʻopilikia i ka pololei o ke ana. I ka ʻāina haʻahaʻa kiʻekiʻe, komo paha ka mahu wai i loko o ka mea ʻike a hoʻopōʻino.
E koho i kahihale hoʻonanea kila kila, ʻo ia hoʻi ka ʻōpala, ka wela kiʻekiʻe a me ka corrosion, a me ka lepo a me ka wai e pale aku ai i ka pōʻino o loko o ka mea ʻike. ʻOiai he wai ʻole ka ʻili o ka probe, ʻaʻole ia e pili i ka wikiwiki o ka pane sensor, a wikiwiki ke kahe a me ka wikiwiki o ka hoʻololi ʻana, i hiki ai ke hoʻokō i ka hopena o ka pane wikiwiki.
Ma o ke kūkākūkā ʻana ma luna, ʻike mākou he nui nā kumu hoʻopilikia, akā he mea hoʻohālikelike wale nō kēia, kikoʻī i kahi hiʻohiʻona, ʻo ia paha ka hopena o nā ʻano mea hoʻopilikia. Akā ʻaʻole pili kēia i kā mākou noiʻi ʻana i ka ʻenehana anti-jamming sensor analog.
ʻO ka ʻenehana analog sensor anti-jamming ka nui o kēia:
6.Sheilding Technology
Hana ʻia nā pahu i nā mea metala. ʻO ke kaapuni e pono ai ka pale ʻia i ʻōwili ʻia i loko, hiki ke pale pono i ka hoʻopili ʻana o ka uila a i ʻole ke kahua magnetic. Kapa ʻia kēia ʻano he pale. Hiki ke hoʻokaʻawale ʻia ka pale pale i ka pale electrostatic, ka pale electromagnetic a me ka pale haʻahaʻa haʻahaʻa.
（1）Electrostatic Shieding
E lawe i ke keleawe a i ʻole aluminika a me nā metala conductive ʻē aʻe e like me nā mea, e hana i kahi pahu metala paʻa, a hoʻopili me ka uea honua, e kau i ka waiwai o ke kaapuni e hoʻomalu ʻia i loko o R, i ʻole e hoʻopilikia ke kahua uila i waho i ka kaapuni kūloko. a ʻo ka mea ʻē aʻe, ʻaʻole e pili ke kahua uila i hana ʻia e ka kaapuni kūloko i ka kaapuni waho. Kapa ʻia kēia ʻano he pale electrostatic.
（2）Ka pale uila uila
No ke kiʻekiʻe frequency interference magnetic field, ua hoʻohana ʻia ke kumu o ka eddy current e hana i ke kiʻekiʻe frequency interference electromagnetic field e hoʻohua i ka eddy current i loko o ka metala pale, e hoʻopau i ka ikehu o ka interference magnetic field, a me ka eddy current magnetic field e kāpae i ka kiʻekiʻe. ka hoʻopili pinepine ʻana i ke kahua magnetic, i pale ʻia ke kaapuni i pale ʻia mai ka mana o ke kahua electromagnetic frequency kiʻekiʻe. Ua kapa ʻia kēia ʻano pale he pale electromagnetic.
（3） Haʻahaʻa Frequency Magnetic Shielding
Inā he haʻahaʻa haʻahaʻa magnetic field, ʻaʻole ʻike ʻia ka hanana eddy i kēia manawa, a ʻaʻole maikaʻi loa ka hopena anti-interference ma ka hoʻohana ʻana i ke ʻano o luna. No laila, pono e hoʻohana ʻia nā mea hoʻokele magnetic kiʻekiʻe e like me ka papa pale, i mea e kaupalena ʻia ai ka laina induction magnetic interference haʻahaʻa i loko o ka papa pale magnetic me ka liʻiliʻi kūʻē magnetic. Mālama ʻia ke kaapuni i hoʻopaʻa ʻia mai ka haʻahaʻa frequency magnetic coupling interference. ʻO kēia ʻano pale i kapa ʻia ʻo ka pale magnetic haʻahaʻa haʻahaʻa. ʻO ka pūpū hao o ka mea ʻike ʻike ʻike e hana ma ke ʻano he pale magnetic haʻahaʻa. Inā hoʻokumu hou ʻia, hoʻokani ʻo ia i ka hana o ka pale electrostatic a me ka pale electromagnetic.
7. ʻenehana hoʻopaʻa honua
ʻO ia kekahi o nā ʻenehana maikaʻi e hoʻopaʻa i ke keakea a me ka hōʻoia nui o ka ʻenehana pale. Hiki i ka hoʻokumu ʻana kūpono ke hoʻopaʻa pono i ka hoʻopili ʻana o waho, hoʻomaikaʻi i ka hilinaʻi o ka ʻōnaehana hoʻāʻo, a hōʻemi i nā kumu hoʻopilikia i hana ʻia e ka ʻōnaehana ponoʻī. ʻO ke kumu o ka hoʻokumu ʻana he ʻelua: palekana a me ka hoʻopaʻa ʻana. No laila, ua hoʻokaʻawale ʻia ka hoʻokumu ʻana i ke kahua pale, ka pale ʻana a me ka hōʻailona hōʻailona. No ka palekana, pono e hoʻopaʻa ʻia ka pahu a me ka chassis o ka mīkini ana sensor. Ua māhele ʻia ka ʻāina hōʻailona i ka ʻāina hōʻailona analog a me ka ʻāina hōʻailona kikohoʻe, nāwaliwali maʻamau ka hōʻailona analog, no laila ʻoi aku ka kiʻekiʻe o nā koi ʻāina; ʻOi aku ka ikaika o ka hōʻailona kikohoʻe, no laila hiki ke haʻahaʻa nā koi honua. Loaʻa i nā kūlana ʻike sensor ʻokoʻa nā koi like ʻole i ke ala i ka honua, a pono ke koho ʻia ke ʻano kumu kūpono. ʻO nā ʻano hana hoʻopaʻa ʻāina maʻamau, ʻo ia hoʻi ka hoʻopaʻa ʻana i hoʻokahi kiko a me ka hoʻokumu ʻana i nā helu he nui.
(1) Hoʻokahi helu kumu
I nā kaapuni alapine haʻahaʻa, ʻoi aku ka maʻamau e hoʻohana i hoʻokahi kahua kahua, nona kahi laina kumu radial a me kahi laina kahua kaʻa. ʻO ka hoʻokumu ʻana i ka radiological, ʻo ia hoʻi, ua pili pono kēlā me kēia kaapuni hana i ke kaapuni me ka helu kuhikuhi ʻole e nā uea. Busbar grounding 'o ia ho'i, ua ho'ohana 'ia nā mea ho'okele ki'eki'e me kekahi wahi cross-sectional e like me ke ka'a ho'oku'u 'ana, kahi i pili pono i ka helu hiki 'ole. Hiki ke hoʻopili ʻia ka ʻāina o kēlā me kēia poloka hana i ke kaapuni i ke kaʻa kaʻa kokoke. He ʻōnaehana ʻike piha nā mea ʻike a me nā mea ana, akā mamao paha lākou.
(2) Ka hoʻopaʻa ʻana i nā ʻāpana he nui
Manaʻo pinepine ʻia nā kaapuni alapine kiʻekiʻe e hoʻopaʻa i ka hoʻokumu ʻana i nā ʻāpana he nui. ʻO ke alapine kiʻekiʻe, ʻoiai he manawa pōkole o ka ʻāina e loaʻa i ka nui o ka hāʻule ʻana o ka uila impedance, a me ka hopena o ka puʻupuʻu puʻupuʻu, hiki ʻole ke hoʻoneʻe ʻia i hoʻokahi wahi, no laila hiki ke hoʻohana ʻia ke ʻano papa honua ʻano, ʻo ia hoʻi ka multipoint earthing ala, me ka hoʻohana ʻana i kahi conductive maikaʻi i ka ʻole. hiki ke kuhikuhi ma ke kino o ka mokulele, ke kaapuni alapine kiʻekiʻe e hoʻopili ai i ka mokulele conductive kokoke i ke kino. Ma muli o ka liʻiliʻi loa o ka impedance kiʻekiʻe o ke kino mokulele conductive, ua hōʻoia ʻia ka mana like ma kēlā me kēia wahi, a ua hoʻohui ʻia ka capacitor bypass e hōʻemi i ka hāʻule o ka volta. No laila, pono i kēia kūlana ke hoʻohana i ke ʻano kumu hoʻokumu multi-point.
8.ʻenehana kānana
ʻO kāna kānana kekahi o nā ala maikaʻi e hoʻopau ai i ka interference mode serial AC. ʻO nā kaapuni kānana maʻamau i ke kaapuni ʻike ʻike ʻike pū kekahi kānana RC, kānana mana AC a me kāna kānana mana maoli.
(1) RC kānana: inā he mea ʻike ke kumu hōʻailona me ka loli lohi e like me ka thermocouple a me ka strain gage, ʻoi aku ka maikaʻi o ke kaohi ʻana o ka kānana RC passive me ka leo liʻiliʻi a me ke kumu kūʻai haʻahaʻa. E hoʻomaopopo naʻe, ʻo nā kānana RC e hōʻemi i ka hoʻopilikia ʻana i ke ʻano mode series ma ka uku o ka wikiwiki pane ʻōnaehana.
(2) kānana mana AC: hoʻopili ka pūnaewele mana i nā ʻano leo kiʻekiʻe a haʻahaʻa haʻahaʻa, i hoʻohana mau ʻia e hoʻopau i ka walaʻau i hui pū ʻia me ka kānana LC mana.
(3) DC mana kānana: DC mana hāʻawi pinepine kaʻana like e kekahi mau kaapuni. I mea e pale aku ai i ke keakea i hanaia e kekahi mau kaapuni ma o ke ku'eku'e o loko o ka lako mana, pono e hoohui ia RC a i ole LC decoupling kānana i ka mana DC o kela a me keia kaapuni no ke kānana i ka leo haahaa.
9.Photoelectric hui 'enehana
ʻO ka pōmaikaʻi nui o ka hoʻohui photoelectric ʻo ia ka hiki ke kāohi pono i ka pulse peak a me nā ʻano leo leo like ʻole, no laila e hoʻomaikaʻi maikaʻi ʻia ka lākiō hōʻailona-a-noise i ke kaʻina hoʻoili hōʻailona. ʻO ka walaʻau keʻakeʻa, ʻoiai aia kahi ākea nui, akā liʻiliʻi ka ikehu, hiki ke hana i kahi ʻano nāwaliwali wale nō, a ʻo ka photoelectric coupler hoʻokomo ʻāpana o ka māmā emitting diode ke hana ma lalo o ke kūlana o kēia manawa, alakaʻi maʻamau ka uila o 10 ma ~ 15 ma, no laila ʻoiai inā he nui ka hoʻopili ʻana, ʻaʻole hiki i ka mea keakea ke hāʻawi i ka manawa kūpono a hoʻopaʻa ʻia.
E ʻike ma aneʻi, ke manaʻoʻiʻo nei au ua loaʻa iā mākou kekahi ʻike o nā kumu hoʻohālikelike analog sensor a me nā ʻano hana anti-interference, i ka wā e hoʻohana ai i ka sensor analog, inā ka hanana ʻana o ke keakea, e like me ka ʻike ma luna o kēlā me kēia noiʻi, e like me ke kūlana maoli i e hana i nā hana, ʻaʻole pono e hana makapō, e pale i ka pōʻino i ka sensor.
Ka manawa hoʻouna: Jan-25-2021
