Data Sheet

Page 12

Web: www.maxbotix.com

PD11500t

MaxBotix

Inc.

Patent 7,679,996

HRXL-MaxSonar

WR/WRC

™

Series

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

Background Information Regarding our Beam Patterns

Each HRXL-MaxSonar-WR 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 sens-

ing 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 pattern both vertically and horizontally). Beam

patterns for dowels are used to show the beam pattern of each sensor. Dowels are long cylindrical

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 distance.

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.