LV-MaxSonar-EZ1 Datasheet

values are nominal
A
0.785" 19.9 mm H 0.100" 2.54 mm
B 0.870" 22.1 mm J 0.610" 15.5 mm
C 0.100" 2.54 mm K 0.645" 16.4 mm
D 0.100" 2.54 mm L 0.735" 18.7 mm
E 0.670" 17.0 mm M 0.065" 1.7 mm
F 0.510" 12.6 mm N 0.038"
dia.
1.0 mm
dia.
G
0.124"
dia.
3.1 mm
dia.
weight, 4.3 grams
Benefits
• Very low cost sonar
ranger
• Reliable and stable range
data
• Sensor dead zone
virtually gone
• Lowest power ranger
• Quality beam
characteristics
• Mounting holes provided
on the circuit board
• Very low power ranger,
excellent for multiple
sensor or battery based
systems
• Can be triggered
externally or internally
• Sensor reports the range
reading directly, frees up
user processor
• Fast measurement cycle
• User can choose any of
the three sensor outputs
LV-MaxSonar
®
-EZ1
™
High Performance
Sonar Range Finder
With 2.5V - 5.5V power the LV-MaxSonar
®
-
EZ1
™
provides very short to long-range
detection and ranging, in an incredibly
small package. The LV-MaxSonar
®
-EZ1
™
detects objects from 0-inches to 254-inches
(6.45-meters) and provides sonar range
information from 6-inches out to 254-inches
with 1-inch resolution. Objects from 0-
inches to 6-inches range as 6-inches. The
interface output formats included are pulse
width output, analog voltage output, and
serial digital output.
Features
• Continuously variable gain
for beam control and side
lobe suppression
• Object detection includes
zero range objects
• 2.5V to 5.5V supply with
2mA typical current draw
• Readings can occur up to
every 50mS, (20-Hz rate)
• Free run operation can
continually measure and
output range information
• Triggered operation provides
the range reading as desired
• All interfaces are active
simultaneously
• Serial, 0 to Vcc, 9600Baud,
81N
• Analog, (Vcc/512) / inch
• Pulse width, (147uS/inch)
• Learns ringdown pattern
when commanded to start
ranging
• Designed for protected
indoor environments
• Sensor operates at 42KHz
• High output square wave
sensor drive (double Vcc)
Beam Characteristics
People detection requires high sensitivity, yet a
narrow beam angle requires low sensitivity. The
LV-MaxSonar

-EZ1

balances the detection of
people with a narrow beam width.
Sample results for measured beam patterns are
shown below on a 12-inch grid. The detection
pattern is shown for;
(A) 0.25-inch diameter dowel, note the narrow
beam for close small objects,
(B) 1-inch diameter dowel, note the long narrow
detection pattern,
(C) 3.25-inch diameter rod, note the long
controlled detection pattern,
(D) 11-inch wide board moved left to right with
the board parallel to the front sensor face
and the sensor stationary. This shows
the sensor’s range capability.
Note: The displayed beam width of (D) is
a function of the specular nature of sonar
and the shape of the board (i.e.
flat mirror like) and should
never be confused with
actual sensor
beam width.
beam characteristics are approximate
- 5 ft.
- 10 ft.
- 15 ft.
MaxBotix
®
Inc.
MaxBotix, MaxSonar & EZ1 are trademarks of MaxBotix Inc.
LV-EZ1 ™ • Patent 7,679,996 • Copyright 2005 - 2012
approximately
actual size
K
J
- 20 ft.
*Brown dot parts enhanced for low noise chaining
A
B
C
D
E
F
GND
+5
TX
RX
AN
PW
G
H
L
M
N
*BW
brown
dot
D
A
B
C
5V
3.3V
Email:
[e-mail]
Web:
www.maxbotix.com
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