Un photodetector Iyo mhando yesensu iyo inogona kushandiswa kune akawanda maficha mune ako DIY mapurojekiti. Kunyangwe iwe uri mugadziri, unogona kugadzira yako yega yekuchengetedza system neimwe ye izvi zvemagetsi zvinoriumba. Asi zvisati zvaitika, iwe unofanirwa kuziva kuti chii chaizvo chishandiso icho, chii chaicho, uye kuti chinoshanda sei.
Uye zvakare, iwe unozodzidzawo mutsauko nemimwe michina inogona kuoneka yakafanana, uye iyo mhando dzefotodetectors izvo zviripo, imwe neimwe iine zvayakanakira nezvayakaipira ...
Chii chinonzi photodetector?
Un photodetector Iyo sensor inogadzira chiratidzo chemagetsi chinoenderana nechiedza chinowira pane ichi chinhu. Ndokunge, sekuwanda kana kuderera kweiyi magetsi emagetsi inokanganisa, ichagadzira imwe kana imwe chiratidzo chinogona kududzirwa. Chero kugadzira chiito, kana kungoera chiyero cheiyi radiation.
Mimwe yeaya photodetectors akavakirwa pamhedzisiro, inogona kuve: photoelectrochemical, photoconductive, kana photoelectric kana photovoltaic. Iyo yekupedzisira iri imwe yeakajairika, uye inosanganisira kuburitswa kwemaerekitironi nechinhu chine zvivakwa izvi kana magetsi emagetsi emagetsi achiwira pairi, kazhinji mwenje kana UV. Mune mamwe mazwi, kana chinhu chakashandiswa chichigona kushandura chikamu chemwenje simba rive simba remagetsi.
Mamwe epamberi mafotodetectors, senge CCD uye CMOS sensors Ivo vane chizvaro cherudzi urwu rwema miniaturized detectors kuti vagadzire matrix uye vatore vhidhiyo nemifananidzo, izvi zviri zvemberi shanduko.
Mhando dze photodetector
Kune dzakawanda mhando yemidziyo inogona kuiswa mukati meiyo inomiririrwa nemufananidzo wemifananidzo. Izvi ndeizvi:
- Photodiode
- Phototransistor
- Photoresist
- Photocathode
- Phototube kana photovalve
- Photomultiplier
- CCD sensor
- CMOS sensor
- Photoelectric sero
- Photoelectrochemical cell
Applications
Photodetectors anogona kuva neakawanda e zvinokwanisika kunyorera:
- Chigadzirwa chekurapa.
- Encoders kana encoders.
- Kuverengwa kwenzvimbo.
- Maitiro ekuongorora.
- Fiber optic kutaurirana masisitimu.
- Kugadziriswa kwemifananidzo (kutora kwemifananidzo, vhidhiyo).
- Etc.
Semuenzaniso, mune system ye fiber optic, iyo inoshanda nechiedza panzvimbo pemagetsi emagetsi, kuwedzera kumhanya kwekutaurirana, fiberglass fibers inogona kutakura mwenje nekumhanya kwakanyanya, asi kana masaini aya agamuchirwa, vanoda photodetector kuti avabate uye processor yekuvatora.
Vhidhiyo detector vs photo detector
Mune masystem ekuchengetedza, senge maalarm, zvirokwazvo iwe wakanzwa zvakare kuti vane photodetectors kana vhidhiyo michina. Muzviitiko izvi, iwo rudzi rweiyo sensor inotora mifananidzo, kana iyo inotora vhidhiyo yezvinoitika munzvimbo inoongororwa, kuona kuti zvese zvakaringana kana, zvikasadaro, kudzima maalarm kana kuzivisa mauto ekuchengetedza.
Kubatanidzwa kweArduino uye photodetector
Mumuenzaniso uyu ini ndinoshandisa kuramba LDR nendiro Arduino UNO zvakabatana nenzira iri nyore yaunogona kuona mumufananidzo uri pamusoro. Sezvauri kuona, zviri nyore sekushandisa iyo LED (unogona kuitsiva nechimwe chinhu) chakabatana ne resistor kuGND uye pane imwe pini yacho kune chimwe chebudiro rebhodhi.
Ukuwo, kune photosensor kubatana, iyo 5v magetsi kubva kuArduino bhodhi ichashandiswa, uye imwe yeanalogog yekuisa kune ayo mamwe magumo. Nenzira iyi, kana mwenje ukawira pane ino resistor yeLDR, izvozvi zvekuburitsa kwazvino zvichabatwa neiyi analogu inopinda zvinosiyana uye zvichakwanisika kuzvidudzira kuti zviite rimwe basa ...
Saka iwe unogona kuona yakapusa kesi yekushandisa uye iyo sketch kodhi zvakafanira kune yako chirongwa ne 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);
}
Pano iwe unongoona chete kuti mwenje ye LED inovhenekera zvichibva pachiedza chakaonekwa neiyo photodetector. Ehe, iwe wakasununguka kuita gadzirisa kodhi iyi kugadzira chirongwa chaunoda. Uyu muenzaniso uri nyore kuratidza kushanda kwawo nenzira inoshanda.
Kwokutenga photodetector
Ukasarudza kutenga photodetector, unogona kusarudza izvi recommendations izvo zvichazokwanisa kugutsa zvese zvinodikanwa:
- Blaupunkt Kuchengeteka: Photodetector yakagadzirira kusangana neako alarm system. Iyo ine huwandu hwe110º uye inogona kusvika gumi nemaviri nekuona kufamba kana kuvapo kwechimwe chinhu.
- Hapana zvigadzirwa zvakawanikwa.: ipakeji yeLDR resistor, ndiko kuti, zvishandiso zvinozosiyana nekupokana kwavo zvichienderana nechiedza chinowira pavari.
- Hapana zvigadzirwa zvakawanikwa.: imwe diki module yeArduino nemamwe mabhodhi uye nekugadziriswa kwe680 × 480 px.
- Chiedza detector module: senge iyo LDR asi inouya yakaiswa pane module uye zviri nyore kwazvo kusanganisa neArduino.