Iwe unogona kuziva nezve redhiyo frequency, asi iwe unonyatsoziva izvo zvavari?
Radhiyo frequency rudzi rwemasaisai emagetsi anoshandiswa kutaurirana, uye akatitenderedza. Hauzvione, asi ndidzo tekinoroji dzinosimbisa maredhiyo edu, materevhizheni, nharembozha nezvimwe.
Mugwaro rino, tichataura nezve maredhiyo ma frequency, mashandisiro aanoita, uye mashandisirwo aanoitwa.
Chii chinonzi maredhiyo?
Radhiyo frequencies (RF) mafungu emagetsi anotenderera pamwero wekuchinjanisa magetsi uye magetsi, achigadzira munda wemagineti nemagetsi.
Iwo anoshandiswa mumhando dzakasiyana-siyana dzekushandisa, kubva pakugonesa midziyo yemagetsi kuenda kukutumira data. RF frequency kubva pa20 kHz kusvika ku300 GHz, ine muganho wepamusoro ari maodhiyo ma frequency uye muganho wepasi uri infrared frequencies.
RF simba rinoshandiswa kugadzira mafungu eredhiyo, ayo anogona kushandiswa kune zvakasiyana siyana. RF currents ine zvakakosha zvivakwa zvinoita kuti ive yakasiyana neyakananga ikozvino. Lower audio frequency alternating current ine frequency ye60 Hz, uye inoshandiswa pakugovera magetsi emagetsi. RF mafungu, zvisinei, anogona kupinda zvakadzika mumakondukita emagetsi, uye anowanzoyerera achitevedza nzvimbo, chiitiko chinozivikanwa seganda maitiro.
Kana maRF emagetsi akaiswa kumuviri, anogona kukonzera kunzwa kunorwadza uye kuputika kwemhasuru, pamwe nekuvhunduka kwemagetsi. RF currents zvakare inokwanisa kuita ionize mhepo, ichigadzira nzira inofambisa. Ichi chivakwa chinoshandiswa mune yakakwira frequency mayunitsi emagetsi arc welding. RF mafungu anogona zvakare kushandiswa pakugovera magetsi, sezvo kugona kwavo kutaridzika kuyerera nemunzira dzine insulating zvinhu senge dielectric insulator kana capacitor inoita kuti ive yakanakira chinangwa ichi. RF yazvino inewo maitiro ekuratidza kure kubva kune discontinuities mutambo kana majoini, zvichikonzera mamiriro anonzi mafungu akamira. Kuti udzivise izvi, RF yazvino inowanzo takurwa zvakanaka kuburikidza nemitsara yekufambisa kana coaxial tambo. Iyo radio spectrum yakakamurwa kuita mabhendi, ane mazita akajairwa akasarudzwa neInternational Telecommunication Union (ITU). RF inoshandiswa mumhando dzakasiyana-siyana dzekutaurirana, dzakadai sekutumira, vanogamuchira, makomputa, terevhizheni, uye nharembozha. Inoshandiswawo mune anotakura masisitimu azvino, anosanganisira telephony uye control maseketi, uye muMOS yakabatanidzwa yedunhu tekinoroji. RF inoshandiswawo mumashandisirwo ekurapa, senge radiofrequency ablation uye magnetic resonance imaging (MRI).
Zvishandiso zvekuyedza zveredhiyo zvinosanganisira zviridzwa zvakajairwa kumucheto wepasi, uye ma frequency epamusoro anoda hunyanzvi hwekuyedza michina.
Ndeipi nhoroondo yeredhiyo frequency?
Mafambiro eredhiyo ave aripo kwemazana emakore, asi hakuna kusvika mukupera kwezana ramakore rechi 19 ndipo paakashandiswa pakukurukurirana. Muna 1895, Guglielmo Marconi, muvambi weItaly, akaratidza yekutanga yakabudirira kureba isina waya yekutumira teregirafu. Izvi zvakaratidza kutanga kwekushandiswa kwemasaisai eredhiyo pakutaurirana. Mukutanga kwezana ramakore rechi20, maredhiyo akashandiswa kufambisa izwi nemimhanzi. Yekutanga nhepfenyuro yeredhiyo yakavambwa muna 1920 muDetroit, Michigan. Izvi zvakateverwa nekugadzwa kwedzimwe nhepfenyuro dzakawanda pasi rose. Mumakore ekuma1930, kutepfenyura kwekutanga kweterevhizheni kwakatanga kushandisa maredhiyo. Izvi zvaibvumira vanhu kuona zvirongwa zveterevhizheni mudzimba dzavo. Munguva yeHondo Yenyika II, maredhiyo akashandiswa kutumira mameseji ekodhi pakati pevarwi. Mumakore ekuma1950, setiraiti yekutanga yakapinzwa muchadenga, uye yakashandisa masaisai eredhiyo kufambisa masaini. Izvi zvakabvumira kufambiswa kwezviratidzo zveterevhizheni kunzvimbo dziri kure. Mumakore ekuma1960, mbozhanhare dzekutanga dzakagadzirwa, uye vakashandisa maredhiyo ekufambisa izwi nedata. Mumakore ekuma1970, mafoni ekutanga asina tambo akagadzirwa, uye vaishandisa maredhiyo ekufambisa masaini. Izvi zvaibvumira vanhu kufona pasina kudiwa kwetambo. Mumakore ekuma1980, ekutanga nharembozha akaiswa, uye vakashandisa maredhiyo kufambisa izwi nedata. Nhasi, maredhiyo eredhiyo anoshandiswa kune zvakasiyana siyana, kusanganisira kutaurirana, kufamba, uye varaidzo. Anoshandiswa munharembozha, satellite terevhizheni, uye isina waya internet. Mafambiro eredhiyo auya kure kubva paakatanga kutapurirana Marconi, uye anoramba ari chikamu chakakosha chehupenyu hwedu.
Mhando dzeRadio Frequencies: kHz, GHz, RF
Seni, ndichakurukura nezvemhando dzakasiyana dzeredhiyo, mashandisiro avanoita mazuva ese, mabhenefiti nematambudziko ekushanda navo, mashandisiro avo emangwana, uye maitiro avo pane zvakatipoteredza, mauto, kutaurirana, bhizinesi, uye hutano. Isu tichatarisawo nezve basa reredhiyo frequency mune imwe neimwe yenzvimbo idzi.
Kushandiswa Kwemazuva ese kweRadio Frequencies: Terevhizheni, Nharembozha, Makomputa
Radio frequencies (RF) masaisai emagetsi anofamba nemumhepo nekumhanya kwechiedza. Zvinoshandiswa mumhando dzakasiyana dzemazuva ese, dzakadai seterevhizheni, mbozhanhare, uye makomputa. Mafungu eRF ane huwandu hwakawanda hwema frequency, kubva pa20 kHz kusvika 300 GHz.
Iyo yepasi yekupedzisira yerenji inoshandiswa kune odhiyo frequency, nepo iyo yepamusoro ichishandiswa kune infrared frequencies. Mafungu eRF anoshandiswa kune zvakasiyana siyana, semagetsi arc welding, kugovera magetsi, uye kupinda kwemagetsi conductor. Iwo anogona zvakare kushandiswa kutaurirana, sezvo achigona kushandurwa kuita mwenje weredhiyo uye masaisai eruzha. Mafungu eRF anogona zvakare kushandiswa kuyera wavelength uye frequency. Kushandisa mafungu eRF kunogona kuunza mamwe matambudziko, senge mafungu akamira, maitiro eganda, uye kupisa kweRF. Mafungu akamira anoitika kana maRF currents achifamba nemutsetse wekutapurirana uye anotaridzwa kumashure, zvichikonzera mamiriro anonzi mafungu akamira. Iyo ganda mhedzisiro itsika yeRF currents kupinda zvakadzika muma conductor emagetsi, ukuwo kupisa kweRF kuri kupisa kwepamusoro kunokonzerwa nekushandiswa kweRF currents kumuviri. Ramangwana reRF mafungu riri kuvimbisa, nekuvandudzwa kweanotakura masisitimu, akasanganiswa edunhu tekinoroji, uye isina waya nharembozha. Mafungu eRF ari kushandiswawo kuderedza kusvibiswa kweredhiyo uye ari kushandiswa muchiuto kune redhiyo spectrum uye frequency mazita. Mafungu eRF ane huwandu hwakasiyana hwekushandisa mubhizinesi, senge telephony, control circuits, uye MRI. Izvo zvakare zvine chekuita pahutano, sezvo zvichigona kukonzera kuvhunduka kwemagetsi, kurwadziwa, electrosurgery, uye radiofrequency ablation. Pakazara, mafungu eRF chikamu chakakosha chehupenyu hwazvino, uye mashandisiro awo ari kungowedzera. Iwo anoshandiswa mumhando dzakasiyana dzemazuva ese ekushandisa, uye zvavanogona kunyorera zviri kungokura. Dzinopa zvimwe zvinetso, asi betsero dzadzo dzinopfuura zvikuru ngozi.
Zvakanakira Kushandisa Radio Frequencies: Electric Arc Welding, Power Distribution, Kupinda kweMagetsi Conductors.
Radio frequency mafungu emagetsi anoshandiswa mumhando dzakasiyana dzemazuva ese. Iwo anoyerwa mu kilohertz (kHz), gigahertz (GHz), uye redhiyo frequency (RF). Radhiyo frequency ine zvakawanda zvakanaka, sekushandiswa kwemagetsi arc welding, kugovera magetsi, uye kugona kupinda maconductor emagetsi. Magetsi arc welding inzira inoshandisa high-frequency currents kugadzira arc yemagetsi pakati pezvidimbu zviviri zvesimbi. Iyi arc inonyungudutsa simbi uye inobvumira kuti ibatanidzwe pamwechete. Kugovera magetsi kunoshandisa RF currents kufamba kuburikidza nedielectric insulators uye capacitors, zvichibvumira magetsi kugovaniswa kureba.
RF currents zvakare inokwanisa kupinda zvakadzika mumakondukita emagetsi, ayo anobatsira pakudzora simba remagetsi. Nekudaro, pane mamwe matambudziko kana uchishanda neredhiyo frequency. Masaisai akamira anoitika kana maRF emagetsi achiitwa kuburikidza neakajairwa tambo dzemagetsi, uye anogona kukonzera kukanganiswa nekufambiswa kwemasaini. Iyo ganda mhedzisiro nderimwe dambudziko, sezvo RF mafungu akaiswa kumuviri anogona kukonzera kurwadza kwekunzwa uye muscular contractions.
Kupisa kweRF kunogonawo kuitika, iko kupisa kwepamusoro kunokonzerwa neionization yemhepo. Ramangwana reredhiyo rinotaridzika kupenya, sezvo riri kushandiswa mukutakura masystem, akasanganiswa edunhu tekinoroji, uye isina waya nharembozha. Iyi tekinoroji yakave nekukanganisa kukuru kune zvakatipoteredza, sezvo ionization yemhepo inogona kugadzira nzira inofambisa inogona kukuvadza vanhu nemhuka. Maredhiyo eredhiyo anewo basa rakakura mumauto, sezvo achishandiswa kupatsanura redhiyo kuita mabhendi eredhiyo uye kudoma ma frequency eNATO neEU. Maredhiyo eredhiyo anewo simba guru pakukurukurirana, sezvo achigona kushandiswa kushandura mwenje weredhiyo uye masaisai eruzha kuita wavelengths nemafrequency. Chekupedzisira, maredhiyo eredhiyo anoshandiswawo mubhizinesi kune telephony, kudzora maseketi, uye MRI. Izvo zvakare zvine chekuita pahutano, sezvo kuvhunduka kwemagetsi uye kurwadziwa kunogona kukonzerwa neRF currents, uye electrosurgery uye radiofrequency ablation inogona kushandiswa kurapa cancer. Pakazere, maredhiyo eredhiyo chikamu chakakosha chehupenyu hwedu, uye ane huwandu hwakasiyana hwekushandisa. Iwo anoshandiswa kugadzira, kugovera magetsi, kutaurirana, uye kunyange kurapwa. Sezvo tekinoroji iri kuenderera mberi, kushandiswa kwemaredhiyo kunongowanda.
Zvinetso zvekushanda neRadio Frequencies: Mafungu Akamira, Skin Effect, RF Burns
Radhiyo frequency ndeyemagetsi oscillations emuchina system, kubva pa20 kHz kusvika 300 GHz. Iyi frequency renji ingangoita muganho wepamusoro weodhiyo frequency uye yakaderera muganho we infrared frequencies. RF mafungu ane akakosha zvivakwa zvinogovaniswa neakananga ikozvino, asi yakaderera odhiyo frequency alternating ikozvino.
Pa60 Hz, yazvino inoshandiswa pakugovera magetsi emagetsi, maRF emagetsi anogona kupenya nemuchadenga nenzira yemasaisai eredhiyo. Mabviro akasiyana anotsanangura akasiyana ekumusoro neazasi mabhaundi eiyo frequency renji. Magetsi emagetsi anotenderera paredhiyo anoshandiswa mune zvakasiyana siyana. RF mafungu anogona kupinda zvakadzika mumakondukita emagetsi uye anowanzo kuyerera ari pamusoro, anozivikanwa seganda maitiro. Kana maRF emagetsi akaiswa kumuviri, anogona kukonzera kunzwa kunorwadza uye muscular contraction, kana kunyange kuvhunduka kwemagetsi.
Lower frequency currents inogona kuburitsa depolarization yetsinga membranes, zvichiita kuti RF currents isakuvadze uye isakwanise kukonzera kukuvara kwemukati kana kutsva kwepamusoro, kunozivikanwa sekutsva kweRF. RF yazvino ine zvakare midziyo yekukwanisa ionize mhepo, kugadzira nzira inofambisa. Ichi chivakwa chinoshandiswa mune yakakwira frequency mayunitsi emagetsi arc welding. RF mafungu anogona zvakare kushandiswa pakugovera magetsi, sekugona kweRF yazvino kutaridzika kuyerera nemunzira dzine insulating zvinhu, senge dielectric insulator kana capacitor, inozivikanwa se capacitive reactance.
Kusiyana neizvi, RF yazvino yakavharwa necoil kana kutendeuka kamwe chete kwewaya, inozivikanwa se inductive reactance. Sezvo iyo frequency inowedzera, iyo capacitive reactance inoderera, uye inductive reactance inowedzera. Izvi zvinoreva kuti RF yazvino inogona kuitiswa kuburikidza neakajairwa tambo dzemagetsi, asi maitiro ayo ekuratidzira kubva kune discontinuities mutambo, senge zvibatanidza, zvinogona kukonzera mamiriro anonzi mafungu akamira.
RF yazvino inotakurwa zvakanakisa kuburikidza nemitsara yekutumira uye coaxial tambo. Iyo radio spectrum yakakamurwa kuita mabhendi, ane mazita akajairwa akasarudzwa neInternational Telecommunication Union (ITU). Frequency dziri pasi pe1 GHz dzinowanzonzi microwaves, uye frequency dziri pakati pe30 ne300 GHz dzakasarudzwa semamita masaisai. Yakadzama bhendi mazita anopiwa mune yakajairwa IEEE tsamba-bhendi frequency mazita, uye NATO uye EU frequency mazita.
Maredhiyo eredhiyo anoshandiswa mumidziyo yekutaurirana senge ma transmitters, anogashira, makomputa, terevhizheni, uye nharembozha, uye anoshandiswawo mukutakura masystem azvino, anosanganisira runhare nekudzora maseketi. Nekuwanda kwazvino kweredhiyo frequency wireless telecommunication zvishandiso, senge mbozhanhare, simba reRF riri kushandiswa mukuwedzera uye kuwanda kwekushandisa kwekurapa, senge radiofrequency ablation. Magnetic resonance imaging (MRI) inoshandisawo masaisai eredhiyo kugadzira mifananidzo yemuviri wemunhu.
Zvishandiso zvekuyedza zveredhiyo zvinosanganisira zviridzwa zvakajairwa kumucheto wepasi, uye ma frequency epamusoro anoda hunyanzvi hwekuyedza michina.
Ramangwana reRadio Frequencies: Carrier Current Systems, Integrated Circuit Technology, Wireless Telecommunications
Radio frequencies (RF) mafungu emagetsi anoshandiswa mumhando dzakasiyana dzemazuva ese, kubva paterevhizheni nenharembozha kuenda kumakomputa uye kugovera magetsi. Mafungu eRF anogadzirwa nekuchinjanisa magetsi uye magetsi, uye ane akakosha zvivakwa zvinoita kuti abatsire kune akasiyana maapplication. RF mafungu anogona kupinda zvakadzika mukati memagetsi conductor, uye anowanzo kuyerera nepamusoro pemaconductor, anozivikanwa seganda maitiro.
Kana maRF emagetsi akaiswa kumuviri, anogona kukonzera kunzwa kunorwadza uye kuputika kwemhasuru, pamwe nekuvhunduka kwemagetsi. Lower frequency currents inogona kuburitsa depolarization ye nerve membranes, inogona kukuvadza uye kukonzera kukuvara kwemukati kana kutsva kwepamusoro, kunozivikanwa seRF kutsva. RF currents zvakare inokwanisa kuita ionize mhepo, ichigadzira nzira inobatika inogona kushandiswa mune yakakwira frequency mayuniti akadai semagetsi arc welding. RF mafungu anogona zvakare kushandiswa mukugovera magetsi, sezvo achigona kuyerera nemunzira dzine insulating zvinhu senge dielectric insulators uye capacitors. Ichi chivakwa chinozivikanwa se capacitive reactance, uye chinodzikira sezvo frequency inowedzera.
Kusiyana neizvi, maRF emagetsi anovharwa nemakoiri uye waya ane kutendeuka kumwe chete, nekuda kweiyo inductive reactance, iyo inowedzera nekuwedzera frequency. Mafungu eRF anogona kuitiswa kuburikidza neakajairwa tambo dzemagetsi, asi anowanzo ratidza kubva kune discontinuities mutambo, senge zvikochekera, uye kudzokera kune kwakabva, zvichikonzera mamiriro anozivikanwa semafungu akamira. RF currents inogona kutakurwa zvakanaka kuburikidza netambo dzekutumira uye coaxial tambo, uye radio spectrum yakakamurwa kuita mabhendi ane mazita akajairwa akasarudzwa neInternational Telecommunication Union (ITU). Iwo ma frequency kubva ku1-30 GHz anowanzo kunzi microwaves, uye mamwe akadzama bhendi mazita anopiwa neyakajairwa IEEE tsamba-bhendi frequency mazita uye EU/NATO frequency mazita. Maredhiyo eredhiyo anoshandiswa mumidziyo yekutaurirana senge ma transmitters uye anogamuchira, pamwe nemumakomputa, terevhizheni, uye nharembozha. RF mafungu ari kushandiswawo mukutakura masystem azvino, anosanganisira runhare uye kudzora maseketi, uye akasanganiswa edunhu tekinoroji ari kushandiswa kugadzira kuwanda kweredhiyo frequency wireless telecommunication zvishandiso, senge mbozhanhare. Pamusoro pezvo, simba reRF riri kushandiswa mumishonga yekurapa, senge radiofrequency ablation, uye magineti resonance imaging (MRI) inoshandisa masaisai eredhiyo kugadzira mifananidzo yemuviri wemunhu. Zvishandiso zvekuyedza zvinoshandisa maredhiyo zvinosanganisira zviridzwa zvakajairwa pazasi peiyo renji, pamwe nepamusoro mafrequency nemidziyo yekuyedza ine hunyanzvi. Pakazere, maredhiyo eredhiyo anoshandiswa mumhando dzakasiyana dzekushandisa, kubva kumidziyo yekutaurirana kuenda kune yekurapa zvikumbiro, uye inopa huwandu hwemabhenefiti nematambudziko. Sezvo tekinoroji iri kuramba ichifambira mberi, kushandiswa kwemaredhiyo kungangowedzera kupararira.
Mhedzisiro yeRadio Frequencies pane Zvakatipoteredza: Ionization yeMhepo, Radio Wave Kusvibiswa
Radio frequencies (RF) ari kuchinjanisa magetsi emagetsi uye ma voltages anogadzira magetsi emagetsi. Aya minda anoshandiswa kupa masimba akasiyana emazuva ese emidziyo, senge terevhizheni, nharembozha, uye makomputa. RF zvakare ine akawanda akasiyana mamwe mashandisirwo, anosanganisira emagetsi arc welding, kugovera magetsi, uye kupinda kwemagetsi conductor.
Nekudaro, kushanda neRF kunogona kuunza mamwe matambudziko, senge mafungu akamira, maitiro eganda, uye kutsva kweRF. Iko kushandiswa kweRF kunogona kuve nekukanganisa kwakakura pane zvakatipoteredza. Imwe yeanowanzo mhedzisiro ndeye ionization yemhepo, inoitika kana RF mafungu akaiswa kumuviri. Izvi zvinogona kukonzera manzwiro anorwadza uye mascular contractions, pamwe nekuvhunduka kwemagetsi uye kutsva kwepamusoro kunozivikanwa sekutsva kweRF.
Pamusoro pezvo, RF inogona kukonzera kusvibiswa kweredhiyo, iyo inogona kukanganisa mamwe masaini eredhiyo uye kukanganisa kutaurirana. Mauto zvakare anoshandisa RF, zvakanyanya nekuda kwekugona kwayo kupinda zvakadzika mumakonduri emagetsi. Izvi zvinovabvumira kushandisa nhepfenyuro yeredhiyo kutaurirana uye kutarisa zvinangwa. Ivo zvakare vanoshandisa ma frequency mazita, senge International Telecommunication Union (ITU) uye NATO frequency mazita, kuona akasiyana mabhendi. Mubhizinesi, RF inoshandiswa kune zvakasiyana siyana, senge telephony, kudzora maseketi, uye magineti resonance imaging (MRI). RF inoshandiswawo mukurapa zvikumbiro, senge electrosurgery scalpels uye radiofrequency ablation. Zvishandiso izvi zvinoshandisa RF kucheka uye cauterize tishu pasina kudiwa kwe scalpel. Pakupedzisira, RF inogona kukanganisa hutano. Low frequency currents inogona kukonzera kuvhunduka kwemagetsi uye kurwadziwa, nepo kukwirisa frequency currents kunogona kukonzera kukuvara kwemukati. Pamusoro pezvo, RF inogona kukonzera kupisa kweRF, iko kupisa kwepamusoro kunokonzerwa neionization yemhepo. Mukupedzisa, RF ine huwandu hwakasiyana hwekushandisa, kubva pakugonesa midziyo yemazuva ese kusvika kumishonga yekurapa. Nekudaro, inogona zvakare kuve nemhedzisiro yakakosha pane zvakatipoteredza, mauto, bhizinesi, uye hutano. Naizvozvo, zvakakosha kuziva njodzi dzinogona kuitika dzekushandisa RF uye kutora matanho anodiwa.
Basa reRadio Frequencies muMauto: Radio Spectrum, Frequency Designations
Radhiyo frequencies imhando yemagetsi emagetsi anogona kushandiswa kune zvakasiyana siyana, kusanganisira kutaurirana, kugovera magetsi, uye zvekurapa zvikumbiro. Radhiyo frequencies inotangira pa20 kHz kusvika pa300 GHz, neinoperera magumo eiyo renji iri kushandiswa kwemaodhiyo frequency uye iyo yepamusoro yekupedzisira ichishandiswa kune infrared frequencies. Redhiyo frequency inoshandiswa muhupenyu hwezuva nezuva kuterevhizheni, mbozhanhare, uye makomputa. Radhiyo frequencies ine zvakawanda zvakanaka, sekugona kupinda ma conductor emagetsi, ayo anoshandiswa mumagetsi arc welding uye kugovera simba. Ivo zvakare vane kugona kutaridzika kuyerera nemunzira dzine insulating zvinhu, senge capacitors uye dielectric insulators. Ichi chivakwa chinoshandiswa mune yakakwira-frequency zvikamu zvemagetsi arc welding. Nekudaro, kune zvakare matambudziko ane chekuita nekushanda neredhiyo frequency. Mafungu akamira, maitiro eganda, uye kupisa kweRF zvese zvinogona kuitika kana uchishandisa maredhiyo. Mafungu akamira anoitika kana yazvino yakavharwa necoil kana waya, uye kupisa kweRF kunogona kuitika kana ikozvino ikaiswa kumuviri. Muchiuto, maredhiyo eredhiyo anoshandiswa kune zvakasiyana siyana, sekutaura, kufamba, uye kuongorora. Iyo redhiyo spectrum yakakamurwa kuita mabhendi, nebhendi rega rega riine yakatarwa frequency kutaurwa. Aya ma frequency mazita anoshandiswa neNATO, EU, uye International Telecommunication Union (ITU). Radhiyo frequencies inoshandiswawo mubhizinesi, senge telephony, control circuits, uye magnetic resonance imaging (MRI). Anoshandiswawo mukurapa, sekuvhunduka kwemagetsi, kunyaradza kurwadziwa, electrosurgery, uye radiofrequency ablation. Chekupedzisira, maredhiyo eredhiyo anogona kukanganisa zvakatipoteredza, sekunge nekuita ionizing mhepo uye kukonzera kusvibiswa kweredhiyo. Zvakakosha kuziva njodzi dzinogona kuitika dzine chekuita neredhiyo frequencies uye kutora matanho ekudzikisa chero zvakaipa zvinokanganisa.
Mhedzisiro yeRadio Frequencies paKukurukurirana: Redhiyo Chiedza uye Inzwi Waves Shanduko, Wavelength uye Frequency
Radio frequencies imhando yemagetsi emagetsi anogona kushandiswa kutaurirana, kugovera magetsi, uye mamwe maapplication. Radhiyo frequencies inotangira pa20 kHz kusvika pa300 GHz, ine muganho wepamusoro uri iwo maodhiyo eredhiyo uye muganho wepasi uri iwo infrared frequencies. Aya ma frequency anoshandiswa kugadzira maoscillating electric currents anopenya nemumhepo semasaisai eredhiyo.
Kwakasiyana masosi anogona kudoma akasiyana ekumusoro neazasi mabhaundi eiyo frequency renji. Magetsi emagetsi anotenderera paredhiyo ane zvimiro zvisingagovane neazvino kana epasi redhiyo frequency alternating current. Semuyenzaniso, maRF emagetsi anogona kupinda zvakadzika mukati memagetsi conductor uye anowanzo kuyerera pamusoro penzvimbo, iyo inozivikanwa seganda maitiro. Kana maRF emagetsi akaiswa kumuviri, anogona kukonzera kunzwa kunorwadza uye kuputika kwemhasuru, pamwe nekuvhunduka kwemagetsi.
Lower frequency currents anogona kuburitsa izvi zvinokonzeresa futi, asi RF currents kazhinji haina kukuvadza uye haikonzere kukuvara kwemukati kana kutsva kwepamusoro, uko kunozivikanwa sekutsva kweRF. RF mafungu anewo kugona kuita ionize mweya nyore, kugadzira nzira inofambisa. Ichi chivakwa chinoshandiswa mune yakakwira frequency mayunitsi emagetsi arc welding. RF currents inogona zvakare kushandiswa pakugovera magetsi, sezvo inokwanisa kuoneka ichiyerera nemunzira dzine insulating zvinhu, senge dielectric insulator kana capacitor.
Izvi zvinozivikanwa se capacitive reactance, uye inodzikira sezvo frequency inowedzera. Kusiyana neizvi, maRF currents anovharwa necoil yewaya kana kutendeuka kamwe chete kwewaya yakabhenda, inozivikanwa seinductive reactance. Izvi zvinowedzera sezvo frequency inowedzera. RF mafungu anowanzo itwa kuburikidza neakajairwa tambo dzemagetsi, asi ane tsika yekuratidzira kubva kune discontinuities mutambo, senge majoi. Izvi zvinogona kuita kuti ikozvino ifambe ichidzokera kutsime, zvichikonzera mamiriro anozivikanwa semafungu akamira. RF currents inogona kutakurwa zvakanyanya kuburikidza netambo dzekutumira uye coaxial tambo.
Maredhiyo akakamurwa kuita mabhendi, uye aya anopihwa mazita akajairika neInternational Telecommunication Union (ITU). Maredhiyo eredhiyo anoshandiswa mumhando dzakasiyana dzemazuva ese, senge ma transmitters, anotambira, makomputa, terevhizheni, uye nharembozha. Iwo anoshandiswawo mukutakura azvino masisitimu, anosanganisira telephony uye control maseketi, uye muMos yakabatanidzwa yedunhu tekinoroji. Kuwanda kwazvino kweredhiyo frequency wireless telecommunications zvishandiso, senge mbozhanhare, kwatungamira kune akati wandei mashandisirwo emagetsi eredhiyo frequency simba, kusanganisira diathermy uye hyperthermy kurapwa kwegomarara, electrosurgery scalpels kucheka uye cauterize maoparesheni, uye radiofrequency ablation.
Magnetic resonance imaging (MRI) inoshandisawo masaisai eredhiyo kugadzira mifananidzo yemuviri wemunhu. Zvishandiso zvekuyedza zveredhiyo zvinosanganisira zviridzwa zvakajairwa zvepazasi magumo erenji, pamwe nehunyanzvi hwekuyedza michina yemhando yepamusoro. Paunenge uchishanda neRF, midziyo yakakosha inowanzodiwa, uye RF inowanzo reva magetsi oscillations. Mechanical RF masisitimu haana kujairika, asi kune mechanic Filters uye RF MEMS.
Curtis naThomas 'Stanley High Frequency Apparatus: Construction and Practical Application, yakabudiswa ne Everyday Mechanics Company muna 1891, inopa tsananguro yakadzama yekushandiswa kweRF muhupenyu hwezuva nezuva.
Basa reRadio Frequencies muBusiness: Telephony, Control Circuits, MRI
Radio frequencies (RF) ari kuchinjanisa magetsi emagetsi kana ma voltages anogadzira munda wemagetsi. Iwo anoshandiswa mumhando dzakasiyana dzekushandisa, kubva kuzvinhu zvemazuva ese sematerevhizheni nenharembozha, kune mamwe mashandisirwo akasarudzika semagetsi arc welding uye kugovera magetsi. RF frequencies ine huwandu hwe20 kHz kusvika 300 GHz, nemagumo ezasi erenji ari maodhiyo ma frequency uye ekumusoro kumagumo ari infrared frequencies. RF currents ine zvakakosha zvivakwa zvinoita kuti zvive zvakakosha mubhizinesi. Semuenzaniso, vanogona kupinda zvakadzika mumakondukita emagetsi, vachivabvumira kushandiswa munhare uye kudzora maseketi. Iwo anogona zvakare kushandiswa mukurapa maapplication akadai seMRI, iyo inoshandisa radio frequency waves kugadzira mifananidzo yemuviri wemunhu.
RF mafungu anogona zvakare kushandiswa mumidziyo yekuyedza yeakakwira ma frequency, uye mune inotakura masisitimu eiyo akasanganiswa yedunhu tekinoroji uye isina waya nhare. Nekudaro, kushanda neRF frequency kunogona kuve kwakaoma. Semuyenzaniso, maRF currents anowanzo ratidza kure ne discontinuities mumatambo uye majoini, achigadzira mamiriro anonzi akamira mafungu. Ivo zvakare vane midziyo yekukwanisa kutaridzika kuyerera nemunzira dzine insulating zvinhu, senge dielectric insulator kana capacitor.
Ichi chivakwa chinoshandiswa mune yakakwira frequency mayunitsi emagetsi arc welding. Pamusoro pezvo, kana maRF emagetsi akaiswa kumuviri, anogona kukonzera kunzwa kunorwadza uye kuputika kwemhasuru, pamwe nekuvhunduka kwemagetsi. Lower frequency currents inogonawo kuburitsa kukuvara kwemukati uye kutsva kwepamusoro, kunozivikanwa seRF kutsva. RF mafambisirwo ane huwandu hwakasiyana hwekushandisa mubhizinesi, kubva parunhare uye kutonga maseketi kuenda kuMRI uye yakasanganiswa yedunhu tekinoroji. Kunyange zvazvo achigona kubatsira, anogonawo kuva ane ngozi, uye anofanira kungwarira pakushanda nawo. Nekuwanda kwazvino kweredhiyo frequency wireless telecommunications zvishandiso, senge mbozhanhare, zvakakosha kuti unzwisise njodzi dzinogona kuitika uye mabhenefiti eRF frequency.
Mhedzisiro yeRadio Frequence paHutano: Magetsi Shock, Marwadzo, Electrosurgery, Radiofrequency Ablation
Radio frequencies (RF) mafungu emagetsi anoshandiswa kune akasiyana maapplication, kubva pakutaurirana kusvika pakurapwa. Iwo anowanzo kuiswa muzvikamu zvitatu: kHz, GHz, uye RF. Imwe neimwe mhando yefrequency ine yayo yakasarudzika zvivakwa uye mashandisiro, pamwe neanogona kukanganisa hutano. KHz ma frequency anoshandiswa kuodhiyo maapplication, akadai seredhiyo neterevhizheni nhepfenyuro. Iyo inoshandiswawo pakugovera simba, sezvo inogona kupinda mukati memagetsi emagetsi. GHz mafrequency anoshandiswa kufonera isina waya, senge mbozhanhare nemakomputa.
Izvo zvinoshandiswawo pakurapa kwekurapa, senge magnetic resonance imaging (MRI). RF ma frequency anoshandiswa kumagetsi arc welding uye radiofrequency ablation, kurapwa kunoshandiswa kurapa cancer. Iko kushandiswa kweRF frequency kunogona kuve neyakanaka uye yakaipa kukanganisa pahutano. Semuyenzaniso, yakaderera frequency mafungu anogona kukonzera kuvhunduka kwemagetsi uye kurwadza kwekunzwa, ukuwo ma frequency epamusoro anogona kukonzera kupisa kwepamusoro kunozivikanwa sekutsva kweRF. Uye zvakare, RF mafungu anogona nyore ionize mhepo, kugadzira nzira inofambisa iyo inogona kushandiswa kune yemagetsi arc welding.
Nekudaro, ichi chivakwa chimwe chete chinogona kukonzera kusvibiswa kweredhiyo wave. Chekupedzisira, maRF frequency anoshandiswa muchiuto kune redhiyo spectrum uye frequency mazita. Iwo anoshandiswawo mubhizinesi kune telephony, control circuits, uye MRI. Pamusoro pezvo, anoshandiswa kushandura mwenje weredhiyo uye masaisai eruzha kuita wavelength uye frequency. Pakazere, maRF ma frequency ane huwandu hwakasiyana hwekushandisa, kubva pakutaura kusvika pakurapwa. Vanogona kuva nemigumisiro yakanaka uye yakaipa pahutano, zvichienderana nehuwandu uye kushandiswa. Sezvo tekinoroji iri kuramba ichishanduka, kushandiswa kweRF frequency kungangowedzera kupararira.
Kusiyana
Radio frequencies vs microcurrent
Radio frequencies (RF) uye microcurrents nzira mbiri dzakasiyana dzesimba dzinoshandiswa mumhando dzakasiyana dzekushandisa. Kunyange zvazvo zvose zviri zviviri zvinosanganisira kushandiswa kwemagetsi, zvinosiyana maererano nehuwandu hwavo, simba, nemigumisiro pamuviri. RF imhando yepamusoro-frequency yesimba, kazhinji kubva pa20 kHz kusvika pa300 GHz, nepo microcurrents iri yakaderera frequency, kazhinji kubva pa0.5.
Hz kusvika 1 MHz. RF inoshandiswa mukufambiswa kweredhiyo, terevhizheni, uye nharembozha, nepo microcurrents inoshandiswa mukurapa uye kukurudzira magetsi. Musiyano mukuru pakati peRF uye microcurrent ndeye frequency yavo. RF ndiyo yakakwira frequency fomu yesimba, zvinoreva kuti inogona kupinda mukati memukati memuviri uye ichikonzera simba rakawanda. Kune rimwe divi, microcurrents yakaderera frequency uye inogona kungopinda mukati memuviri, ichiita kuti isave nesimba.
RF zvakare inogona kukonzera kurwadza kwekunzwa uye tsandanyama kudzvanya, nepo microcurrents kazhinji isingakuvadzi. Mumwe musiyano pakati peRF uye microcurrent isimba ravo. RF ine simba zvakanyanya kupfuura microcurrent, uye inogona kushandiswa kufambisa huwandu hukuru hwesimba pamusoro pemadaro marefu. Microcurrents, kune rumwe rutivi, haina kusimba uye inogona kungoshandiswa kune pfupi-renji maapplication.
RF zvakare inogona kukonzera kukanganisa nemamwe maturusi emagetsi, nepo microcurrents isingaite kudaro. Pakupedzisira, mhedzisiro yeRF uye microcurrent pamuviri zvakasiyana. RF inogona kukonzera kupisa, kuvhunduka kwemagetsi, uye kukuvara kwemukati, nepo microcurrents kazhinji isingakuvadzi. RF inogona zvakare ionize mhepo, ichigadzira nzira inofambisa, nepo microcurrents haigone. Pakazere, RF uye microcurrent maitiro maviri akasiyana esimba ayo anoshandiswa mukushandisa kwakasiyana. RF ndiyo yakakwira frequency fomu resimba rine simba uye rinogona kukonzera zvakanyanya kukonzeresa pamuviri, nepo microcurrents iri yakaderera frequency uye kazhinji isingakuvadzi.
FAQ nezve redhiyo frequency
Ndeapi maredhiyo eredhiyo anoshandiswa?
Mawairesi eredhiyo anoshandiswa kune zvakasiyana siyana, kubva pakutaurirana kusvika pakugovera magetsi. Mhando dzeredhiyo frequency dzinosiyana zvichienderana nekushandisa, paine mamwe ma frequency ari kushandiswa kutaurirana, nepo mamwe achishandiswa pakugovera magetsi. Radio frequency inogona kuve nemhedzisiro yakasiyana pavanhu, zvichienderana nekuwanda uye simba rechiratidzo.
Low frequency redhiyo mafungu anogona kupinda zvakadzika mumuviri, zvichikonzera kunzwa kunorwadza kana muscular contraction, nepo mafungu eredhiyo epamusoro anogona kukonzera kupisa kwepamusoro kunonzi kutsva kweRF. RF currents inogona zvakare kushandiswa pakurapa zvikumbiro senge diathermy, hyperthermy, uye radiofrequency ablation. Magnetic resonance imaging (MRI) inoshandisawo masaisai eredhiyo kugadzira mifananidzo yemuviri wemunhu. Musiyano mukuru pakati pemisoro mitatu iyi mashandisirwo eredhiyo frequency. Ndeapi maredhiyo eredhiyo anoshandiswa? inotarisa pamashandisirwo akasiyana-siyana eredhiyo, sekutaura uye kugovera magetsi. Ndedzipi mhando dzeredhiyo frequency? inotarisa pamhando dzakasiyana dzemasaisai eredhiyo, seaya anoshandiswa pakutaurirana neaya anoshandiswa pakugovera magetsi.
Chekupedzisira, Chii chinonzi radio frequency kuita kuvanhu? inotarisa pamhedzisiro yeredhiyo frequency pavanhu, senge mukana wekurwadziwa kana kutsva.
Chii chinoita ma frequency epamusoro kuuropi?
High frequencies ine huwandu hwemigumisiro pauropi. Mafambiro akaderera, akadai seanowanikwa mumaodhiyo, anogona kuve nekudzikamisa mhedzisiro pahuropi, nepo ma frequency epamusoro, akadai seanowanikwa mumaredhiyo, anogona kuve nemhedzisiro inokurudzira. Low frequency inogona kubatsira kuderedza kushushikana, kunatsiridza kurara, uye kunyange kuderedza marwadzo.
Mafambiro epamusoro, kune rumwe rutivi, anogona kukonzera kusvinura, kuwedzera kutarisisa, uye kunyange kuvandudza kugona kwekuziva. Low frequencies inogonawo kushandiswa kukurudzira kuzorora uye kuderedza kufunganya. Izvi zvinoitwa nekushandisa binaural beats, ari maviri akasiyana ma frequency anoridzwa panguva imwe chete munzeve imwe neimwe. Uropi hunobva hwagadzirisa mafambiro maviri uye kugadzira yechitatu frequency, iwo mutsauko pakati pezviviri.
Iyi frequency yechitatu inozoshandiswa kukurudzira kuzorora. Mafambiro akakwirira, zvisinei, anogona kushandiswa kunyandura uropi. Izvi zvinoitwa nekushandisa maredhiyo, ari masaisai emagetsi anogona kupinda mudehenya uye kumutsa uropi. Izvi zvinogona kushandiswa kuwedzera kusvinura, kutarisa, uye kunyange kuvandudza kugona kwekuziva.
Radhiyo frequencies inogona zvakare kushandiswa kurapa mamwe mamiriro ekurapa, akadai sekuora mwoyo uye chirwere cheParkinson. Mukupedzisa, ma frequency akaderera anogona kuve nekudzikamisa mhedzisiro pahuropi, nepo yakakwirira frequency inogona kuva nemhedzisiro inokurudzira. Low frequencies inogona kushandiswa kukurudzira kuzorora uye kuderedza kusagadzikana, nepo ma frequency epamusoro anogona kushandiswa kukurudzira uropi uye kunyange kurapa mamwe mamiriro ekurapa.
Hukama hwakakosha
1. Masaisai: Mafungu chikamu chakakosha cheredhiyo, sezvo ari iwo svikiro inofamba maredhiyo. Masaisai anouya nenzira dzakasiyana-siyana, zvakadai semasaisai eruzha, masaisai echiedza, uye masaisai eredhiyo.
Masaisai eredhiyo imhando yemasaisai anoshandiswa kufambisa maredhiyo. Iwo akaumbwa nemagetsi uye magineti minda anotenderera pane akasiyana frequencies, izvo zvinoita kuti vakwanise kutakura masaini eredhiyo.
2. Spectrum Allocation: Spectrum allocation ndiyo nzira yekugovera maredhiyo akasiyana kune vashandisi vakasiyana. Izvi zvinoitirwa kuti ive nechokwadi chekuti maredhiyo haana kuwandisa uye kuti mushandisi wega wega ane mukana weiyo frequency yavanoda.
Spectrum allocation inzira yakaoma inoda kunyatsotariswa zvinodiwa nemushandisi wega wega uye kukanganisa kunogona kuitika pakati pemafafitera akasiyana.
3. Electromagnetic Radiation: Electromagnetic radiation isimba rinogadzirwa neredhiyo frequencies. Simba iri rinoumbwa nemagetsi nemagineti anofamba nekumhanya kwechiedza.
Electromagnetic radiation inogona kushandiswa kune zvakasiyana zvinangwa, zvinosanganisira kutaurirana, kufamba, uye kunyangwe kurapwa.
4. Kukurukurirana: Kukurukurirana ndeimwe yekushandiswa kwakakosha kweredhiyo. Radhiyo frequencies inoshandiswa kufambisa data, senge izwi nevhidhiyo, kubva kune imwe nzvimbo kuenda kune imwe.
Iyi data inobva yagamuchirwa neanogamuchira, iyo inosarudza chiratidzo uye inotumira kune yainoda kuenda. Radhiyo frequencies inoshandiswawo mukutaurirana kusina waya, seWi-Fi neBluetooth, iyo inobvumira michina kubatana kune imwe neimwe pasina kudiwa kwetambo. Masaisai: Masaisai mafungu anovhiringa anofamba muchadenga uye zvinhu zviri muchimiro chesimba. Iwo akagadzirwa neinozunguza sosi uye anogona kunge ari mechanic kana electromagnetic. Kuwanda kwesaisai nhamba yenguva dzainotenderera pasekondi, uye inoyerwa nehertz (Hz).
Wavelength (wavelength) inhambwe iri pakati penhongonya mbiri dzinotevedzana kana kuti zvimwiro zvemasaisai, uye inopimwa mumamita (m). Radio frequencies imhando ye electromagnetic wave ine frequency pakati pe3 kHz ne300 GHz. Spectrum Allocation: Spectrum allocation ndiyo nzira yekugovera ma frequency kune akasiyana mashandisiro. Zvinoitwa nehurumende kana mamwe masangano anodzora kuona kuti masevhisi akasiyana awana maredhiyo. Izvi zvinoitirwa kudzivirira kukanganisa pakati pemasevhisi uye kuve nechokwadi chekuti spectrum inoshandiswa nemazvo.
5. Electromagnetic Spectrum: Iyo electromagnetic spectrum ndiyo mutsara wezvose zvinogoneka zvemagetsi emagetsi. Mafambiro eredhiyo chikamu cheiyi spectrum uye anowanzo kuwanikwa pakati pe3 kHz ne300 GHz.
Electromagnetic radiation inoshandiswa nenzira dzakasiyana-siyana, kusanganisira redhiyo, terevhizheni, uye nharembozha. Inogona zvakare kushandiswa pakurapa kufungidzira uye mamwe maapplication.
6. Antennas: Antenna mudziyo unoshandiswa kufambisa uye kugamuchira maredhiyo. Iyo inowanzogadzirwa nesimbi tsvimbo kana waya dzakarongwa mune chaiyo patani.
Antennas inogona kushandiswa kufambisa uye kugamuchira masaini kubva kwakasiyana masosi, kusanganisira redhiyo neterevhizheni, nharembozha, uye satellite.
7. Radio Wave Propagation: Radio wave kuparidzirwa inzira iyo masaisai eredhiyo anofamba nemumhepo. Masaisai eredhiyo anokanganiswa nemhoteredzo, kusanganisira tembiricha, mwando, nezvimwe zvinhu.
Radio wave kuparadzira chinhu chakakosha pakuona huwandu uye mhando yeredhiyo kutapurirana.
8. Madhishi eredhiyo: Redhiyo inotumira mudziyo unoshandiswa kufambisa masaini eredhiyo. Iyo inowanzo sanganisira antenna, sosi yemagetsi, uye modulator.
Maredhiyo ekutepfenyura anoshandiswa kutumira ruzivo panzendo refu, senhepfenyuro neterevhizheni. Iwo anoshandiswawo mumaserura network, satellite kutaurirana, uye mamwe maapplication.
Ini ndini Joost Nusselder, muvambi weNeaera uye mushambadzi wemukati, baba, uye ndinoda kuyedza michina mitsva ine gitare pamoyo pechido changu, uye pamwe nechikwata changu, ndanga ndichigadzira zvakadzama zvinyorwa zveblog kubva 2020. kubatsira vaverengi vakavimbika nekurekodha nemagitare.
