Photodetector: ndi chiyani, ndi chiyani komanso imagwirira ntchito bwanji

chojambula

Un chojambula Ndi mtundu wa sensa womwe ungagwiritsidwe ntchito pama ntchito angapo muma DIY anu. Ngakhale mutakhala wopanga, mutha kupanga makina anu achitetezo ndi amodzi a izi zamagetsi zamagetsi. Koma izi zisanachitike, muyenera kudziwa kuti chipangizocho ndi chiyani, ndi chiyani, komanso momwe chimagwirira ntchito.

Kuphatikiza apo, muphunziranso kusiyana ndi zida zina zomwe zingawoneke zofananira, ndi mitundu ya ma photodetectors zomwe zilipo, iliyonse yokhala ndi zabwino ndi zoyipa zake ...

Kodi photodetector ndi chiyani?

chojambula

Un chojambula Ndi sensa yomwe imatulutsa chizindikiritso chamagetsi chomwe chimadalira kuwala komwe kumagwera pachidachi. Ndiye kuti, ngati cheza chamagetsi chamagetsi chimakhudza kwambiri, chimapanga chizindikiro chimodzi kapena chimzake chomwe chingatanthauziridwe. Pofuna kupanga kanthu, kapena kungoyeza kuchuluka kwa cheza ichi.

Ena mwa opanga ma photodetector amachokera pazotsatira, zomwe zitha kukhala: kujambula zithunzi kapena photovoltaic. Chomalizachi ndi chimodzi mwazofala kwambiri, ndipo chimakhala ndi kutulutsa kwa ma elekitironi ndi zinthu zomwe zimakhalapo pakakhala ma radiation amagetsi pamagetsi, kuwala kapena UV. Mwanjira ina, zinthu zomwe zimagwiritsidwa ntchito zimatha kusintha gawo lina lamphamvu zamagetsi kukhala zamagetsi.

Zithunzi zina zotsogola, monga Masensa a CCD ndi CMOS Ali ndi matrix amtundu woterewu wazida zopanga ma matrix kuti apange matrix ndikujambula makanema ndi zithunzi, izi kukhala kusintha kwakukula kwambiri.

Mitundu ya photodetector

Pali zingapo mitundu Zida zomwe zitha kulembedwa mkati mwa zomwe photodetector imayimira. Izi ndi:

  • Zithunzi
  • Wojambula
  • Chithunzi chojambula
  • Photocathode
  • Phototube kapena photovalve
  • Photomultiplier
  • Kachipangizo CCD
  • CMOS kachipangizo
  • Selo yamagetsi yamagetsi
  • Selo la Photoelectrochemical

ofunsira

Photodetectors atha kukhala ndi kuchuluka kwa ntchito zotheka:

  • Zida zamankhwala.
  • Encoders kapena encoders.
  • Kuwerengera maudindo.
  • Machitidwe oyang'anira.
  • CHIKWANGWANI chamawonedwe kulankhulana kachitidwe.
  • Kusintha kwazithunzi (kujambula zithunzi, kanema).
  • Etc.

Mwachitsanzo, mu dongosolo la fiber optic, yomwe imagwira ntchito ndi kuwala m'malo mwa magetsi amagetsi, kukulitsa kuthamanga kwa kulumikizana, ulusi wa fiberglass imatha kunyamula kuwala kuthamanga kwambiri, koma zikwangwani izi zikalandilidwa, zimafunikira makina ojambula kuti azigwire ndi purosesa kuti iwagwire.

Chojambulira makanema vs chojambulira chithunzi

M'machitidwe achitetezo, monga ma alamu, ndithudi mwamvapo kuti ali ndi zojambulajambula kapena zowunikira makanema. Zikatero, ali mtundu wa sensa yomwe imagwira zithunzi, kapena yomwe imatenga kanema wazomwe zimachitika mdera loyang'aniridwa, kuti zitsimikizire kuti zonse zili bwino kapena, kutulutsa ma alarm kapena kudziwitsa achitetezo.

Kuphatikiza kwa Arduino ndi photodetector

@alirezatalischioriginal

Muchitsanzo ichi ndigwiritsa ntchito kukana LDR ndi mbale Arduino UNO yolumikizidwa munjira yosavuta iyi yomwe mutha kuwona pa chithunzi pamwambapa. Monga mukuwonera, ndizosavuta kugwiritsa ntchito LED (mutha kuyisinthanitsa ndi chinthu china) cholumikizidwa ndi resistor ku GND ndi pa pini yake ina kupita kuzomwe gulu limatulutsa.

Kukaniza kungakhale 1K

Komabe, kwa kulumikiza kwa photosensor, kugwiritsidwa ntchito kwa 5v kuchokera ku board ya Arduino kudzagwiritsidwa ntchito, ndipo chimodzi mwazolowetsa za analog kumapeto ake ena. Mwanjira iyi, kuwala kukadzagwera pa cholumikizira cha LDR ichi, zomwe zatulutsidwa zomwe zidzagwidwe ndi kulowetsaku kwa analogi zidzasiyana ndipo zitheka kutanthauzira kuti zitheke kugwira ntchito ...

Chifukwa chake mutha kuwona vuto losavuta kugwiritsa ntchito ndipo kachidindo zofunikira pamapulogalamu anu ndi Arduino IDE:

//Uso de un fotodetector en Arduino UNO

#define pinLED 12

void setup() {

  pinMode(pinLED, OUTPUT);
  Serial.begin(9600);
}

void loop() {

  int v = analogRead(A0);
  // El valor 500 debe ajustarse según la luz del ambiente donde lo vayas a usar
  // Con poca luz debe ser más pequeño, con mucha mayor. 
  if (v < 500) digitalWrite(pinLED, HIGH); 
  else digitalWrite(pinLED, LOW);
  Serial.println(v);
}


Apa mungowona momwe ma LED amayatsa kutengera kuwala komwe wapeza ndi photodetector. Zachidziwikire, ndinu mfulu kutero sintha nambala iyi kukhazikitsa ntchito yomwe mukufuna. Ichi ndi chitsanzo chosavuta kuwonetsa momwe imagwirira ntchito moyenera.

Komwe mungagule chojambulira

photodetector Alamu

Ngati mungaganize zogula makina opanga zithunzi, mutha kusankha izi malingaliro zomwe zitha kukwaniritsa pafupifupi zosowa zonse:

  • Chitetezo cha Blaupunkt: photodetector wokonzeka kuphatikiza ndi alamu yanu. Ili ndi osiyanasiyana 110º ndipo imatha kufikira mamitala 12 pozindikira kuyenda kapena kupezeka kwa china chake.
  • Wolemba zithunzi za Shang-Jun: ndi paketi yama resistor a LDR, ndiye kuti, zida zomwe zimasinthasintha kukana kutengera kuwala komwe kumagwera pa iwo.
  • 0.3MP kamera ya CMOS sensor: gawo lina laling'ono la Arduino ndi matabwa ena ndikusintha kwa 680 × 480 px.
  • Chojambulira chowunikira: monga LDR koma amabwera modzikweza ndipo ndizosavuta kuphatikiza ndi Arduino.

Zomwe zili m'nkhaniyi zikutsatira mfundo zathu za malamulo okonzekera. Kuti mufotokoze cholakwika dinani Apa.

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