Data Sheet

MaxBotix

Inc.

Patent 7,679,996

HRUSB-MaxSonar

EZ™

Series

Page 7

Web: www.maxbotix.com

PD12141h

MaxBotix Inc., products are engineered and assembled in the USA.

Selecting a HRUSB-MaxSonar-EZ

Different applications require different sensors. The HRUSB-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 affect the maximum

range, pin outputs, or other operations of the sensor. To view how each sensor will function to different sized targets

reference the HRUSB-MaxSonar-EZ-Beam Patterns.

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Selecting a HRUSB-MaxSonar-EZ Detection Zone

Different applications require different sensors. The HRUSB-MaxSonar-EZ product line offers

varied detection zones (detection distances) to allow you to select the best sensor to meet your

needs. Each sensor is matched to provide the approximate detection zone 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 detection zones. 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 detection zone is a 2D representation of the detection area of the sensor. The detection zone 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 detection zone 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 detection zone 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.