GP2D12 Datasheet, PDF (3/4 Pages) Sharp Electrionic Components – General Purpose Type Distance Measuring Sensors

Fig.4 Distance Characteristics
GP2D15
Output H
(Detection) ^{H L}
GP2D12/GP2D15
Hystersis width
LH
(Non detection)
Output L
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Output switching point distance
L=24±3cm
Distance to reflective object L (cm)
Fig.5 Analog Output Voltage vs. Surface
Illuminance of Reflective Object
3.0
GP2D12
2.8
L=10cm
2.4
Reflective object
Kodak Co., Ltd.
2.0
gray cards R-27
(reflective ratio : 90%)
illuminance
1.6
meter
Light source
equivalent to
sun light
GP2D12
1.2
L=30cm
0.8
0.4
L=60cm
0
0 2000 4000 6000 8000 10000 12000 14000
Surface illuminance of reflective object (lx)
Fig.7 Analog Output Voltage vs.Ambient
Temperature
3.0
GP2D12
2.8
L=10cm
2.4
2.0
L=15cm
1.6
L=20cm
1.2
L=50cm ^{L=40cm L=30cm}
0.8
0.4
0
L=60cm
L=70cm L=80cm
−20 −10 0 10 20 30 40 50 60 70 80 90
Ambient temperature Ta (°C)
Fig.6 Analog Output Voltage vs.Distance to
Reflective Object
3.0
2.8
2.4
Draft
White
Gray
GP2D12
Reflectivity
90%
18%
2.0
1.6
1.2
Gray
0.8
0.4
White
0
0 10 20 30 40 50 60 70 80
Distance to reflective object L (cm)
Fig.8 Analog Output Voltage vs.Detection
Distance
3.0
2.8
2.4
GP2D12
Kodak Co., Ltd. gray cards R-27
(reflective ratio : 90%)
L(Distance to
reflective object) _X(Detection
distance)
2.0
L=10cm
Sensor
GP2D12
−X(Detection
distance)
1.6
1.2
L=20cm
L=30cm
0.8
0.4
L=40cm
L=80cm
0
−5 −4 −3 −2 −1 0 1 2 3 4 5
Detection distance X (cm)