520 TVL day/night camera

Kadangi esama cmos kamerėlė buvo itin prasta, reikėjo ją pakeisti. Išsirinkau šią kamerą:

My current cmos camera was very bad quality, so I needed to change it. I’ve choose this one:

SecurityCamera2000

Paprašiau pardavėjo, kad atsiųstų su 2.8 mm židinio objektyvu, o ne 2.5. Nes, netg,i 2.8 mm, jau yra pakankamai plačiakampis (~110-130 laipsnių). Rinkausi kamerą, kad būtų su korpusu, mikrofonu, daugiau nei 500 eilučių ir sugebėtų matyti naktį. Gal kada turėsiu pakankamai įrangos, kad skristi sutemus. Specifikacijos trumpai:

I’ve asked as selled to ship it with 2.8 mm focal length lenses, not the default 2.5 mm. Even 2.8 mm are very wide (~110-130 degrees). I’ve choose camera to have microphone, case, more than 500 TV lines and would be able to see infrared. Maybe some day I’ll have proper equipment to fly in the night. Specifications:

SONY 1/3” Super HAD CCD Color
Sensor: 4.9mm x 3.7mm
Resolution: 520TV Lines
Minimum illumination: 0.05 Lux/F1.2
Electronic Shutter: PAL: 1/50~1/110,000 s; NTSC: 1/60~1/100,000 s
Color to BW: 3Lux/F1.2
Lens: 2.5mm
white Balance: ATW
Backlight compensation: AUTO
Video output: 1.0V p-p (75 Ohm)
Audio output:YES
Voltage: DC12V 150mA (I’ve measured 123.3 mA @ 12V)
Size: 38mm×38mm
Working Temperature: -10 C ~ 50 C (14 F ~ 122 F)

Dėl metalinio korpuso kamera gan sunkoka, be jungčių sveria apie 64 g. Esamas objektyvas nebuvo labai tinkamas skraidyti dienos metu, tagi pakeičiau jį 3,6 mm objektyvą su infrarediniu filtru. Jį paimiau nuo CMOS’inės kameros. Pasirodo 12 x 0.5 mm sriegis daugiau mažiau standartinis apsaugos kamerų objektyvuose. Per savaite pavyko paskristi 4 kartus ;) . Pirmi du skrydžiai su plačiakampiu objektyvu be IR filtro, kiti 2, normalaus apžvalgos kampo, su IR filtru. Video kokybė savaitės eigoje šiek tiek pagerėjo, kadangi uždėjau papildimus LC filtrus kameros ir siųstuvo maitinime.

Camera is slightly heavy due to it’s metal casing. Without connectors it is about 64 grams. Current lens weren’t good for the flight during the daytime, so I’ve replaced it with 3.6 mm lens with infrared filter. I’ve tooked it from my CMOS cam. It seems that 12 x 0.5 mm thread is standart in the security cameras. I was able to fly 4 times this week ;) . First two flights with wide degree lens without IR filter, 2 others – normal degree with IR filter. Video quality increased during the week, because I’ve applied LC filter in the camera/transmitter power supply.


YouTube Direkt

Taip pat pamėginau, kaip kamera mato tamsoje. Lauko, kol visiškai nesutemta, matomas vaizdas kaip diena, panašu, kad temstant nebus jokių problemų skraidyti. Pafilmavau visiškai tamsiame kambaryje, kaip atrodo lituoklis 250C. Regimaisiais spinduliais jis nešviečia, infrarediniam diapazone matomas gan aiškiai. Taip pat išmėginau televizoriaus pultelį. Infrared diodo skleidžiamo srauto, užtektų ji naudoti kaip prožektorių, puikiai nušviečia kambarį žmogui nematomais spinduliais.

I’ve tried this camera in the dark. It gives the bright picture until there is pitch black. It seems there will be no problems to fly some time even after the sunset. I’ve captured the view, how 250C soldering-iron looks in the infrared range. It’s invisible to the naked eye, but it’s clearly wisible in the infrared. Also I’ve tried the remote control from the TV. Infrared diode has enough power to light the room with the invisible rays.


YouTube Direkt

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