I. Nhanganyaya
Mvura Inogona Kubatidza Makenduru, Ichokwadi Here?Ichokwadi!
Ichokwadi here kuti nyoka dzinotya realgar?Inhema!
Zvatichakurukura nhasi ndezvekuti:
Kupindira kunogona kuvandudza kuyerwa kwechiyero, ichokwadi here?
Mumamiriro ezvinhu akajairika, kupindira muvengi wepanyama wekuyera.Kupindira kunoderedza kuyerwa kwechiyero.Muzviitiko zvakakomba, kuyerwa hakuzoitwe zvakajairika.Kubva pakuona uku, kupindira kunogona kuvandudza kuyerwa kwechiyero, iyo inhema!
Zvisinei, ndizvo zvazviri nguva dzose here?Pane mamiriro ezvinhu apo kupindira hakudzikisi kuenzana kwechiyero, asi panzvimbo pacho kunovandudza?
Mhinduro ndihongu!
2. Chibvumirano chekupindira
Kusanganiswa nemamiriro chaiwo, tinoita chibvumirano chinotevera pane kupindira:
- Kupindira hakuna zvikamu zveDC.Muchiyero chaicho, kupindira kunonyanya kukanganisa AC, uye kufungidzira uku kunonzwisisika.
- Kuenzaniswa neyakayerwa DC voltage, iyo amplitude yekukanganisa idiki.Izvi zvinoenderana nemamiriro ezvinhu chaiwo.
- Kupindira chiratidzo cheperiodic, kana kukosha kwezvinoreva zero mukati menguva yakatarwa.Pfungwa iyi haisi yechokwadi pakuyera chaiko.Nekudaro, sezvo kupindira kunowanzo iri yakakwira frequency AC chiratidzo, nekuda kwekukanganisa kwakawanda, gungano re zero rinoreva zvine musoro kwenguva yakareba.
3. Kuyera kurongeka pasi pekukanganiswa
Mazhinji emagetsi ekuyeresa zviridzwa nemamita zvino anoshandisa AD converters, uye kuyera kwavo kuyerwa kwakanyatsoenderana nekugadziriswa kweAD converter.Kazhinji kutaura, vashanduri veAD vane resolution yepamusoro vane huyero hwepamusoro.
Zvisinei, kugadzirisa kweAD nguva dzose kunogumira.Tichifunga kuti kugadziriswa kweAD i3 bits uye iyo yepamusoro yekuyera voltage i8V, iyo AD inoshandura yakaenzana nechiyero chakakamurwa kuita zvikamu 8, chikamu chega chega i1V.iri 1v.Kuyera mhedzisiro yeiyi AD inogara iri nhamba yakazara, uye chikamu chedesimali chinogara chakatakurwa kana kuraswa, icho chinofungidzirwa kutakurwa mubepa rino.Kutakura kana kurasa kunokonzera kukanganisa pakuyera.Semuenzaniso, 6.3V yakakura kupfuura 6V uye isingasviki 7V.Iyo AD kuyerwa mhedzisiro ndeye 7V, uye pane kukanganisa kwe0.7V.Isu tinodaidza iyi kukanganisa AD quantization kukanganisa.
Kuti zvive nyore kuongorora, isu tinofungidzira kuti chiyero (AD converter) haina kumwe kukanganiswa kwekuyera kunze kwekukanganisa kweAD quantization.
Zvino, isu tinoshandisa zviyero zviviri zvakafanana kuyera maviri DC voltages anoratidzwa muMufananidzo 1 pasina kukanganisa (yakanaka mamiriro) uye nekukanganisa.
Sezvinoratidzwa mumufananidzo 1, iyo chaiyo yakayerwa DC voltage ndeye 6.3V, uye iyo DC voltage iri kuruboshwe nhamba haina chero kukanganisa, uye inogara ichikosha mukukosha.Chimiro chiri kurudyi chinoratidza yakananga ikozvino yakavhiringidzwa nealternating current, uye pane imwe shanduko mumutengo.Iyo DC voltage mudhiyagiramu yekurudyi yakaenzana neiyo DC voltage iri kuruboshwe dhayagiramu mushure mekubvisa chiratidzo chekukanganisa.Iyo dzvuku sikweya mumufananidzo inomiririra shanduko yeAD inoshandura.
Ideal DC voltage pasina kukanganisa
Isa inovhiringa DC voltage ine kukosha kwe zero
Ita 10 zviyero zveyakananga ikozvino mumakesi maviri mumufananidzo uri pamusoro, uye wobva waenzanisa zviyero gumi.
Chikero chekutanga kuruboshwe chinoyerwa kagumi, uye kuverenga kwakafanana nguva imwe neimwe.Nekuda kwesimba reAD quantization kukanganisa, kuverenga kwega kwega ndeye 7V.Mushure mezviyero gumi zvakaenzana, mhedzisiro ichiri 7V.Iyo AD quantization kukanganisa ndeye 0.7V, uye iyo yekuyera kukanganisa ndeye 0.7V.
Chikero chechipiri kurudyi chachinja zvakanyanya:
Nekuda kwekusiyana kweiyo yakanaka uye yakashata yekukanganisa voltage uye amplitude, iyo AD quantization kukanganisa kwakasiyana pane dzakasiyana kuyerwa mapoinzi.Pasi pekuchinja kweAD quantization kukanganisa, iyo AD kuyerwa mhedzisiro inoshanduka pakati pe6V ne7V.Zviyero zvinomwe zvaive 7V, zvitatu chete zvaive 6V, uye avhareji yezviyero gumi yaive 6.3V!Iko kukanganisa ndeye 0V!
Muchokwadi, hapana chikanganiso chisingagoneki, nekuti munyika ine chinangwa, hapana yakasimba 6.3V!Zvisinei, pane zvechokwadi:
Muchiitiko chekusavhiringidza, sezvo mhedzisiro yekuyera imwe neimwe yakafanana, mushure mekuenzanisa zviyero gumi, kukanganisa kunoramba kusingachinji!
Kana paine huwandu hwakakodzera hwekuvhiringidza, mushure mezviyero gumi zvakapetwa, iyo AD quantization kukanganisa inoderedzwa nekurongeka kwehukuru!Sarudzo inovandudzwa nehurongwa hwehukuru!Iko kuyerwa kwechiyero kunovandudzwa zvakare nekuraira kwehukuru!
Mibvunzo yakakosha ndeiyi:
Zvakafanana here kana iyo yakayerwa voltage iri mamwe maitiro?
Vaverengi vanogona kuda kutevedzera chibvumirano chekuvhiringidza muchikamu chechipiri, kuratidza kupindira nenhevedzano yehuwandu hwehuwandu, kukwirisa kupindira pamhepo yakayerwa, uyezve kuverenga mibairo yekuyera yepoindi yega yega zvinoenderana nemusimboti wekutakura weAD converter. , uye wozoverenga avhareji kukosha kwekusimbisa, chero bedzi kupindira kweamplitude kunogona kukonzera kuverenga mushure me AD quantization kuchinja, uye sampling frequency yakakwirira zvakakwana (kupindira amplitude kuchinja kune nzira yekushandura, pane maitiro maviri ezvakanaka uye zvisina kunaka. ), uye kurongeka kunofanira kuvandudzwa!
Zvinogona kuratidzwa kuti chero bedzi iyo yakayerwa voltage isiri iyo chaiyo nhamba (haisipo munyika ine chinangwa), pachave neAD quantization kukanganisa, zvisinei kuti yakakura sei iyo AD quantization kukanganisa, sekureba kweamplitude kupindira kwakakura kudarika AD quantization kukanganisa kana yakakura kudarika zvishoma kugadzirisa kweAD, ichaita kuti mugumisiro wekuyera uchinje pakati pezviviri zviri pedyo.Sezvo kupindira kwakanaka uye kwakashata symmetric, hukuru uye mukana wekuderera uye kuwedzera zvakaenzana.Naizvozvo, kana kukosha chaiko kwaswedera kune kukosha kupi, mukana weiyo kukosha ichaonekwa yakakura, uye ichave pedyo neiyi kukosha mushure mekuenzanisa.
Ndiko kuti: kukosha kwezviyero zvakawanda (kupindira kunoreva kukosha ndeye zero) kunofanira kuva pedyo nechiyero chekuyera pasina kukanganisa, ndiko kuti, kushandisa AC yekupindira chiratidzo ine kukosha kwe zero uye kuenzana kwezviyero zvakawanda zvinogona kuderedza yakaenzana AD Quantize. zvikanganiso, gadzirisa kuyerwa kweAD, uye gadzirisa kuyerwa kwechokwadi!
Nguva yekutumira: Jul-13-2023
