Datasheet

Copyright 2005 - 2021 MaxBotix Incorporated Patent 7,679,996
I2CXL-MaxSonar
®
- EZ™ Series
Page 8
Web: www.maxbotix.com
PD11848k
MaxBotix Inc., products are engineered and assembled in the USA
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I2CXL-MaxSonar
®
-EZ™ Beam Characteristics
Background Information Regarding our Beam Patterns
Each I2CXL-MaxSonar-EZ sensor has a calibrated beam pattern. Each sensor is matched to
provide the approximate detection pattern shown in this datasheet. This allows end users to select
the part number that matches their given sensing application. Each part number has a consistent
field of detection so additional units of the same part number will have similar beam patterns. The
beam plots are provided to help identify an estimated detection zone for an application based on
the acoustic properties of a target versus the plotted beam patterns.
Each beam pattern is a 2D representation of the detection area of the sensor. The beam pattern is
actually shaped like a 3D cone (having the same detection pattern both vertically and horizontally).
Detection patterns for dowels are used to show the beam pattern of each sensor. Dowels are long
cylindered targets of a given diameter. The dowels provide consistent target detection
characteristics for a given size target which allows easy comparison of one MaxSonar sensor to
another MaxSonar sensor.
For each part number, the four patterns (A, B, C, and D) represent the detection zone for a given
target size. Each beam pattern shown is determined by the sensor’s part number and target size.
The actual beam angle changes over the full range. Use the beam pattern for a specific target at any given distance to
calculate the beam angle for that target at the specific distance. Generally, smaller targets are detected over a narrower
beam angle and a shorter distance. Larger targets are detected over a wider beam angle and a longer range.
Compared to the XL-MaxSonar-EZ line, the I2CXL-MaxSonar-EZ lines offers slightly tighter beam patterns compared to
the same model number (i.e. I2CXL-MaxSonar-EZ1 versus XL-MaxSonar-EZ1).
Beam Pattern Target Shapes
A 6.1-mm (0.25-inch) diameter dowel 4ft length
B 2.54-cm (1-inch) diameter dowel 4ft length
C 8.89-cm (3.5-inch) diameter dowel 4ft length
D 11-inch wide board 4ft in length moved left to right with the
board parallel to the front sensor face. This shows the
sensor’s range capability.
People Sensing:
For users that
desire to detect
people, the
detection area to
the 1-inch
diameter dowel, in
general, represents
the area that the
sensor will
reliably detect
people.