User Manual

MaxBotix
®
Inc.
Copyright 2005 - 2015 MaxBotix Incorporated
Patent 7,679,996
LV-MaxSonar
®
- EZ™ Series
Page 6
Web: www.maxbotix.com
PD11832f
MaxBotix Inc., products are engineered and assembled in the USA.
Independent Sensor Operation
The LV-MaxSonar-EZ sensors have the capability to operate independently when the user desires. When using the
LV-MaxSonar-EZ sensors in single or independent sensor operation, it is easiest to allow the sensor to free-run. Free-run
is the default mode of operation for all of the MaxBotix Inc., sensors. The LV-MaxSonar-EZ sensors have three separate
outputs that update the range data simultaneously: Analog Voltage, Pulse Width, and RS232 Serial. Below are diagrams
on how to connect the sensor for each of the three outputs when operating in a single or independent sensor operating
environment.
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Selecting an LV-MaxSonar-EZ
Different applications require different sensors. The LV-MaxSonar-EZ product line offers varied sensitivity to allow you
to select the best sensor to meet your needs.
The diagram above shows how each product balances sensitivity and noise tolerance. This does not effect the maximum
range, pin outputs, or other operations of the sensor. To view how each sensor will function to different sized targets
reference the LV-MaxSonar-EZ Beam Patterns.
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Background Information Regarding our Beam Patterns
Each LV-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.
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.
The LV-MaxSonar-EZ Sensors At a Glance
Best Balance
MB1000 MB1010 MB1020 MB1030 MB1040
People Detecon
Wide Beam
High Sensivity
Large Targets
Narrow Beam
Noise Tolerance