Photodetector: he aha ia, he aha ia a pehea e hana ai

mea paʻi kiʻi

Un mea paʻi kiʻi He ʻano sensor ia i hiki ke hoʻohana ʻia no nā noi he nui i kāu papahana DIY. ʻOiai he mea hana ʻoe, hiki iā ʻoe ke hana i kāu ʻōnaehana palekana ponoʻī me kekahi o kēia mau mea uila. Akā ma mua o kēlā, pono ʻoe e ʻike i ke ʻano pono o ia hāmeʻa, no ia, a pehea e hana ai.

Hoʻohui ʻia, e aʻo nō ʻoe i nā ʻokoʻa me nā hāmeʻa ʻē aʻe e like paha, a me ka ʻano o nā photodetector aia kēlā me kēia me kāna mau pōmaikaʻi a me nā pōʻino ...

He aha ka photodetector?

mea paʻi kiʻi

Un mea paʻi kiʻi He sensor ia e hoʻoulu ai i kahi hōʻailona uila e kaukaʻi ʻia i ke kukui i hāʻule ma kēia hāmeʻa. ʻO ia, no ka mea ʻoi aku a ʻoi paha o kēia radiation uila electromagnetic e hoʻopili ai, e hana ia i hoʻokahi a i ʻole hōʻailona ʻē aʻe e hiki ke unuhi. E hoʻoulu i kahi hana, a i ʻole e ana ʻana i ka nui o kēia radiation.

Hoʻokumu ʻia kekahi o kēia mau photodetector i kahi hopena, a hiki ke: photoelectrochemical, photoconductive, a i ʻole photoelectric a i ʻole photovoltaic. ʻO ka hope kekahi o nā mea maʻamau, a hoʻopili ʻia me ka hoʻokuʻu ʻana o nā electrons e kahi mea me kēia mau waiwai ke hāʻule ka uila electromegnetic ma luna o ia mea, ka māmā a UV paha. I nā huaʻōlelo ʻē aʻe, ke hiki i nā mea i hoʻohana ʻia ke hoʻololi i kahi ʻāpana o ka ikehu māmā i ka ikehu uila.

ʻO kekahi mau photodetector holomua, e like me Nā mea loaʻa ʻo CCD a me CMOS Loaʻa iā lākou kahi matrix o kēia ʻano o nā miniaturized detector e hana i kahi matrix a hoʻopaʻa i ke wikiō a me nā kiʻi, ʻo kēia mau mea he evolution holomua.

Nā ʻano o ka photodetector

He nui nāʻano o nā hāmeʻa i hiki ke helu ʻia i loko o ka mea i kū i ke ʻano o ka photodetector. Eia nā:

  • Nā kiʻi paʻi kiʻi
  • Phototransistor
  • ʻO Photoresist
  • Kiʻi kiʻi
  • ʻO Phototube a i ʻole kiʻi kiʻi kiʻi paha
  • Photomultiplier
  • Mīkini paʻi kiʻi CCD
  • Mīkini paʻi CMOS
  • Kele kiʻi uila
  • ʻ .pala Photoelectrochemical

noi

Hiki i nā Photodetector ke loaʻa ka lehulehu o nā noi hiki:

  • Mea hana lāʻau lapaʻau.
  • Encoders a encoders paha.
  • Heluhelu kulana.
  • ʻ systemsnaehana nānā.
  • Nā ʻōnaehana kamaʻilio fiber optic.
  • Ka hoʻoponopono kiʻi ʻana (kiʻi o nā kiʻi, wikiō).
  • Etc.

ʻO kahi laʻana, i kahi ʻōnaehana o fiber optic, ka mea e hana me ka mālamalama ma kahi o ka uila uila, e hoʻonui ai i ka wikiwiki o ke kamaʻilio ʻana, hiki i nā olonā fiberglass ke lawe i ke kukui i nā wikiwiki, akā ke loaʻa kēia mau hōʻailona, ​​pono lākou i photodetector e hopu iā lākou a me kahi mea hana e hopu iā lākou.

Meaʻike wikiō vs mea ʻike kiʻi

I nā ʻōnaehana palekana, e like me nā pū waikaua, he ʻoiaʻiʻo ua lohe pū ʻoe aia he mau photodetector a i ʻole mīkini ʻike wikiō. I kēia mau hihia, he ʻano sensor lākou e kiʻi i nā kiʻi, a i ʻole kiʻi i ke wikiō o nā mea e hana ʻia ma ka wahi i nānā ʻia, e hōʻoia i ka pololei o nā mea āpau a i ʻole, e hoʻokau i nā mea hoʻohoka a hoʻomaopopo paha i nā pūʻali koa palekana.

Hoʻohui o Arduino a me kahi photodetector

arduino ldr

I kēia laʻana e hoʻohana wau i kūʻē LDR me kahi pā Arduino UNO pili i kēia ala maʻalahi hiki iā ʻoe ke ʻike i ke kiʻi ma luna. E like me kāu e ʻike ai, he maʻalahi ia e like me ka hoʻohana ʻana i kahi LED (hiki iā ʻoe ke pani iā ​​ia me kahi mea ʻē aʻe) e pili ana me kahi mea pale i GND a ma kāna pine ʻē aʻe i kekahi o nā huahana a ka papa.

Hiki i ke kūʻē ke lilo i 1K

Ma ka ʻaoʻao ʻē aʻe, no nā pilina photosensor, e hoʻohanaʻia ka 5v lako mai ka papa Arduino, a me kekahi o nā mea hoʻohui analog no kāna hopena'ē aʻe. I kēia ala, ke hāʻule ke kukui ma luna o kēia resistor LDR, e loli ke au o kāna huahana e hopu ʻia e kēia hoʻokomo analog a hiki ke unuhi ʻia e hana i kekahi hana ...

No laila hiki iā ʻoe ke ʻike i kahi hihia hoʻohana maʻalahi a ke kiʻi kikoʻī pono no kāu polokalamu me IDE Arduino:

//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);
}


Maʻaneʻi ʻoe e ʻike ai i ke kukui ʻana o ke kukui LED i ka malamalama i ʻike ʻia e ka photodetector. ʻOiaʻiʻo, ua noa ʻoe i hoʻololi i kēia pāʻālua e hoʻomohala i ka papahana āu e pono ai. He laʻana maʻalahi kēia e hōʻike i kāna hana i kahi ala kūpono.

Kahi e kūʻai ai i kahi photodetector

pū waikele photodetector

Inā hoʻoholo ʻoe e kūʻai i photodetector, hiki iā ʻoe ke koho i kēia mau mea nā'ōlelo paipai e hiki ai ke hōʻona ma kahi o nā pono āpau.

  • Palekana Blaupunkt: kahi mākaukau kiʻi e hoʻopili me kāu ʻōnaehana ʻōnaehana. Loaʻa iā ia kahi papa o 110º a hiki i 12 mau mika e ke ʻimi ʻana i ka neʻe a i ʻole ke kū ʻana o kekahi mea.
  • ʻO Shang-Jun kiʻi paʻi kiʻi: he ʻeke o nā mea pale LDR, ʻo ia hoʻi, nā mea hana e hoʻololi i ko lākou kūpaʻa e like me ke kukui e hāʻule ana ma luna o lākou.
  • 0.3MP kāmela CMOS mīkiniʻimi: kekahi modula liʻiliʻi no Arduino a me nā papa ʻē aʻe a me ka hoʻonā ʻana o 680 × 480 px.
  • Kaha ʻike uila: E like me ka LDR akā kau ʻia ma luna o kahi module a ʻoi aku ka maʻalahi o ka hoʻopili ʻana me Arduino.

Hoʻopili ka ʻike o ka ʻatikala i kā mākou kumumanaʻo o ka hoʻoponopono hoʻoponopono. E hōʻike i kahi kaomi hemahema ʻaneʻi.

E lilo i mea mua e wehewehe

E waiho i kāu manaʻo

Kāu leka uila aae? E,ʻaʻole e paʻiʻia. i hāliu aku i koi 'ia kula *

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  1. He kuleana no ka ʻikepili: Miguel Ángel Gatón
  2. Ke kumu o ka ʻikepili: kaohi SPAM, hoʻokele ʻōlelo.
  3. Legitimation: Kou ʻae
  4. Ka kamaʻilio ʻana o ka ʻikepili: ʻaʻole e hōʻike ʻia ka ʻikepili i nā ʻaoʻao ʻekolu koe ka mana o ke kānāwai.
  5. Pūnaewele mālama: Pūnaewele i mālama ʻia e Occentus Networks (EU)
  6. Nā Kuleana: I kēlā me kēia manawa hiki iā ʻoe ke palena, hoʻōla a kāpae i kāu ʻike.