Axis Q1931-E 0597-001 Data Sheet
Product codes
0597-001
Range Chart
Wide range coverage for AXIS Q1931–E
Focal length
Viewing angle
Human: 1.8 x 0.5 m
Critical dimension: 0.75 m
Vehicle: 1.4 x 4.0 m
Critical dimension: 2.3 m
mm
Horizontal
meters
yards
meters
yards
7
50°
220
240
675
740
13
28°
390
430
1200
1300
35
10°
1030
1130
3170
3460
Detection (1.5 pixels on target)
An observer can see an object
An observer can see an object
60
6°
1770
1930
5420
5920
7
50°
55
60
170
185
13
28°
100
110
300
330
35
10°
260
280
790
860
Recognition (6 pixels on target)
An observer can distinguish an object
An observer can distinguish an object
60
6°
440
480
1350
1480
7
50°
28
30
84
92
13
28°
50
54
150
165
35
10°
130
145
400
440
Identification (12 pixels on target)
An observer can distinguish a specific object
An observer can distinguish a specific object
60
6°
220
240
680
750
The ranges are calculated according to Johnson’s criteria and vary in different weather conditions.
Environmental considerations
Johnson’s criteria assume ideal conditions. The weather conditions at
site will affect the thermal energy emitted from the object and decrease
the effective detection range. The detection range in the tables above is
based on a temperature difference of 2 °C between the targeted object
and the background. However, weather conditions such as rain, snow
and fog will attenuate the radiated energy from the object since the heat
radiation from the object is scattered when it hits particles in the air. To
avoid performance and reliability problems always test the camera in the
actual environment where it should be used.
site will affect the thermal energy emitted from the object and decrease
the effective detection range. The detection range in the tables above is
based on a temperature difference of 2 °C between the targeted object
and the background. However, weather conditions such as rain, snow
and fog will attenuate the radiated energy from the object since the heat
radiation from the object is scattered when it hits particles in the air. To
avoid performance and reliability problems always test the camera in the
actual environment where it should be used.
The difference in number of pixels between detection, recognition and
identification illustrated with a human target.
identification illustrated with a human target.
Use of intelligent applications
The sensor in a thermal camera reacts to differences in thermal energy.
Thus, the sensor is less sensitive to changing light conditions, darkness
and other challenging conditions. This makes thermal cameras a perfect
platform to combine with intelligent video applications to build more ef-
ficient 24/7 surveillance systems. Through our Application Development
Partner Program Axis can offer the widest range of third party applica-
tions available.
Thus, the sensor is less sensitive to changing light conditions, darkness
and other challenging conditions. This makes thermal cameras a perfect
platform to combine with intelligent video applications to build more ef-
ficient 24/7 surveillance systems. Through our Application Development
Partner Program Axis can offer the widest range of third party applica-
tions available.
Integrated with intelligent video applications such as video motion de-
tection or tripwire, the camera can automatically trigger an alert to the
operator. To maximize performance of the application and safeguard re-
liable operation 6 pixels across the object is recommended and the sur-
rounding environment always needs to be considered.
tection or tripwire, the camera can automatically trigger an alert to the
operator. To maximize performance of the application and safeguard re-
liable operation 6 pixels across the object is recommended and the sur-
rounding environment always needs to be considered.