G
Photodiode and motion detector
Aperture angle
KINASGARD
®
High-end variant infrared sensor with enlarged aperture angle of
100° respectively 110° over 360 degrees circumference and 10 m of reach.
Principle
KINASGARD
®
Sensor recognizes the temperature difference
resulting from the movement of persons or objects.
Motion sensor
Motion
Infrared
radiation
Infrared
radiation
Temperature
difference
10m
5m
5m
10m
10m
5m
5m
10m
55°
55°
46,5°
46,5°
X
Y
0°
0°
Top view
Side view
Detection range
KINASGARD
®
In all
KINASGARD
®
motion sensors and presence detectors, a high-end variant infrared sensor with enlarged angle of aperture is exclusively
used. Because of the patented lens system with 20 individual lenses, only very small dark areas are resulting, which even at a distance of 10 m
are only a few centimeters wide, safely detecting also small motions. The sensor recognizes changes in the infrared radiation spectrum, so in
heat radiation, resulting form the movement of persons or objects. Such movements generate a temporary change of the temperature gradient
in the field. Because of the always present body (heat) radiation, this sensor is excellently suitable for the detection of persons. The temperature
difference between sensor and object must be > 5 K.
The sensor used in
PHOTASGARD
®
light intensity sensors (photodiode) was specifically adapted to the sensitivity of the human eye. Its
greatest sensitivity is in the range of 350 nm to 820 nm. Therefore with its special filter the sensor is predestined for exposure measure ment
of daylight and ⁄ or for measuring artificial light of high colour temperature (similar to sunlight).
Photodiode
PHOTASGARD
®
Characteristic curve showing the sensor's sensitivity
in function of the angle of incidence ϕ of light.
Photodiode
PHOTASGARD
®
Characteristic curve showing the sensor's
sensitivity in respect of the wavelength λ of light.
The broken line represents the light perception
of the human eye.
40°
50°
60°
70°
80°
90°
100°
1.0
0.8
0.6
0.4
0.2
0
1.0
0.8 0.6
0.4
30°
20° 10°
0°
0° 20° 40° 60° 80° 100° 120°
400
600
800
1000 1200nm
100%
60%
80%
40%
0%
20%
