Falanqaynta Khaladaadka Nidaamka ee Sawir-qaade

Falanqaynta Khaladaadka Nidaamka ee Sawir-qaade

I. Hordhaca Qodobbada Saamayn ee Khaladaadka NidaamkaSawir-qaade

Tixgelinta gaarka ah ee khaladka habaysan waxaa ka mid ah: 1. Xulashada qaybaha:photodiodes, amplifiers hawlgalka, resistors, capacitors, ADCs, ics korontada, iyo ilaha danab tixraaca. 2. Deegaanka shaqada: Saamaynta heerkulka iyo qoyaanka, iwm. 3. Isku halaynta nidaamka: xasilloonida nidaamka, waxqabadka EMC.

Ii. Khaladka Nidaamka Falanqaynta Sawir-qaadayaasha

1. Photodiode: In aogaanshaha korantadanidaamka, saamaynta photodiodes ee khaladaadka ahhabka korantadawaxaa inta badan lagu muujiyaa dhinacyada soo socda:

(1) Xasaasiyadda (S)/ Xallinta: Saamiga calaamadda soo-saarka (voltage/current) ee korodhka △ y korodhka wax-soo-saarka Taasi waa, s=△y/△x. Xasaasiyadda/xalintu waa xaaladda aasaasiga ah ee xulashada dareemayaasha. Halbeeggaan waxaa si gaar ah loogu muujiyey isku-xirnaanta tooska ah ee photodiodes sida mugdi mugdi ah, iyo muujinta gaarka ah ee sawir-qaadayaasha sida awood u dhiganta dhawaaqa (NEP). Sidaa darteed, falanqaynta ugu aasaasiga ah ee qaladka habaysan waxay u baahan tahay in dareenka (S) / xallinta uu ka sarreeyo shuruudaha qaladka dhabta ah si loo buuxiyo shuruudaha qaladka ee nidaamka sawir-qaadista oo dhan, maaddaama saameynta khaladka ah ee ay sababaan arrimaha dambe ee lagu sheegay sidoo kale loo baahan yahay in la tixgeliyo.

(2) Linearity (δL): Heerka toosan ee xiriirka tirada ee u dhexeeya wax soo saarka iyo soo-gelinta sawir-qaade. yfs waa soosaarka cabbirka buuxa, iyo △ Lm waa weecinta ugu badan ee khadka. Tani waxay si gaar ah uga muuqataa toosan iyo quwadda iftiinka iftiinka toosan ee sawir-qaadaha.

(3) Xasilooni/ku-noqnoqosho: Sawir-qaadehu waxa uu leeyahay wax-soo-saarka is-waafajin la'aanta isla gelinta bakhtiyaanasiibka ah, taas oo ah khalad random. leexashada ugu badan ee istaroogga hore iyo gadaalba waa la tixgeliyaa.

(4) Hysteresis: waa ifafaale meesha qaloocyada sifada wax gelinta-soo-saarka ee sawir-qaade aanay is-dul-saarnayn inta lagu jiro socdaalkiisa hore iyo gadaalba.

(5) Heerkulka qulqulaya: Saamaynta 1℃ kasta ee isbeddelka heerkulka ee isbeddelka wax soo saarka ee sawir-qaadaha. Weecsanaanta heerkulku △Tm ee ay keento qulqulka heerkulku waxa lagu xisaabiyaa iyada oo loo marayo xisaabinta qulqulka heerkulka ee kala duwanaanta heerkulka deegaanka shaqada △T.

(6) Time Drft: Waa ifafaale marka wax-soo-saarka sawir-qaade-ku-beddelo waqti ka dib marka doorsoomaha wax-gelinta uu is beddelo (sababaha inta badan waxaa sabab u ah isbeddelka qaab-dhismeedkiisa). Saamaynta weecinta dhamaystiran ee sawir-qaade ku leeyahay nidaamka waxa lagu xisaabiyaa wadarta vector.

2. Amplifiers Operational: Halbeegyada Muhiimka ah ee Saameynaya qaladka Nidaamka Hawlaha Amplifiers Offset Volt Vos, Heerkulka Heerkulka Vos, Gelitaanka Ios ee hadda jira, Ios heerkulka Ios, Ibsiga hadda jira Ib, impedance input, capacitance input, sawaxan (qeylada galitaanka, qaylada hadda jirta) Naqshad kasbashada buuqa kulaylka, saamiga sahayda MR, diidmada saamiga MR, saamiga sahayda MR, Faa'iidada loop-furan (AoL), badeecada faa'iido-bandwidth (GBW), heerka la dilay (SR), wakhtiga aasaaska, wadarta qalloocsanaanta.

In kasta oo cabbirada amplifiers-hawleedyadu ay yihiin qayb muhiim ah oo ka mid ah nidaamka sida xulashada photodiodes, xaddidnaanta booska awgeed, qeexitaannada xaddidan ee gaarka ah iyo sharraxaadaha halkan laguma faahfaahin doono. Naqshadaynta dhabta ah ee sawir-qaadayaasha, saameynta xuduudahaan ee khaladaadka habaysan waa in dhammaantood la qiimeeyaa. In kasta oo aanay dhammaan halbeegyada laga yaabaa in ay saamayn weyn ku yeelan karaan shuruudaha mashruucaaga, taas oo ku xidhan xaaladaha codsiga dhabta ah iyo dalabaadka kala duwan, xuduudaha kore waxay yeelan doonaan saamayn kala duwan ee khaladaadka habaysan.

Waxaa jira cabbirro badan oo loogu talagalay cod-weyneyaasha shaqada. Noocyada calaamadaha kala duwan, cabbirrada ugu muhiimsan ee keena khaladaadka habaysan ayaa diiradda lagu saari karaa calaamadaha DC iyo AC: Calaamadaha isbeddelka DC-ga Soo-gelinta danab-celinta Vos, Heerkulka Vos-ka-soo-saarka, Ios-gelinta hadda jirta, Ib-celinta hadda jirta, buuqa (qeylada wax-soo-gelinta, qaylada hadda jirta, naqshadeynta helitaanka dhawaaqa kuleylka), saamiga diidmada korontada (PSRR), saamiga guud-mo (PSRR). Calaamadaha kala duwanaanshiyaha Ac: Marka lagu daro cabirrada sare, kuwan soo socda ayaa sidoo kale loo baahan yahay in la tixgeliyo: awoodda wax gelinta, faa'iidada loop-loop (AoL), badeecada-bandwidth-ka (GBW), heerka la dilay (SR), wakhtiga aasaaska, iyo wadarta qallooca is-waafajinta.