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use methods :
1 . sensor interface have 3 root pin , vcc , separately is out , gnd . vcc and gnd power supply end , out is singnal .
2 . to detect the objects , signal ended low level . to detect objects , signal ended high level .
3 . mainly to determine singnal is 0 or 1 , ‘ll sentience objects .
performance parameters :
1 : detection distance , whellote detection the time of about 2 cm . optic color different somewhat different distance , white .
2 . power supply voltage : 2.5v ~ 12v , don’t over 12v . ( : note the most andeasiest low voltage power supply , power supply too high voltage sensor life span shortens . 5v plus . power supply )
3 . current , 5v when 18 ~ 20ma . a test , sensor hardware set for 18 ~ 20ma current when the best performance , the main manifestations in anti interference . if need client small the gy70 , book shop fix , smallest can do 5ma . photographed the message indicate the can .
4 . to detect the objects , signal ended low level . to detect objects , signal ended high level .
5 . sensor output ttl dbm0 , direct and 3.3v or 5v mcu io mouth 3.42 .
black line or white line principle
1 . use of black for light reflective small this peculiarity , when the flat of color black when , sensor launched infrared light large . thereupon sensor output low level 0 .
2 . flat when there is a succumb as , sensor black line in upper , because of the black the reflection capabilities , reflection come back infrared light rarely , inaccessible to sensor level action , therefore sensor also 1 . output
3 . we just use single chip judgment sensor the output is 0 or is 1 , it can black .
4 . detection white line principium and detection as principle succumb as , detection white line when , white line the color comparison also close to the black , then adjust infrared sensor above adjustable resistor , will sensitivity lower , always just to waterstarved color testing till , can detection white line .
- Unit Type:
- Package Weight:
- 0.100kg (0.22lb.)
- Package Size:
- 15cm x 8cm x 4cm (5.91in x 3.15in x 1.57in)