Datasheet

ManualsBrandsMaxbotix ManualsRobot PartsHRXL-MaxSonar-WRM Weather Resistant Ultrasonic Range Finder

Page 1

Web: www.maxbotix.com

PD11500c

MaxBotix

Inc.

Patent 7,679,996

HRXL-MaxSonar

WR/WRC

™

Series

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

HRXL-MaxSonar

- WR/WRC

™

Series

High Resolution, IP67 Weather Resistant, Ultra Sonic Range

Finder MB7360, MB7367, MB7369, MB7380, MB7387, MB7389

Precision Ultrasonic Range

Sensing

• Range-finding at a fraction of the

cost of other precision rangefinders

• Reading-to-reading stability of

1-mm at 1-meter is typical

• Accuracy is factory-matched

providing a typical accuracy of 1%

or better

1,2

• Compensation provided for target

size variation and operating voltage

range

• Internal temperature compensation is

standard

• Optional external temperature

compensation

• Excellent clutter rejection

(MB7369 , MB7389)

Very Low Power

Requirements

• Wide, low supply voltage

requirements eases battery powered

design

• Low current draw reduces current

drain for battery operation

• Fast first reading after power-up

eases battery requirements

Easy to use Component

Module

• Stable and reliable range readings

and excellent noise rejection make

the sensor easy to use for most users

• Easy to use interface with distance

provided in a variety of outputs

• Target size compensation provides

greater consistency and accuracy

when switching targets

• Sensor automatically handles

acoustic noise

2,4

• Small and easy to mount

• Calibrated sensor eliminates most

sensor to sensor variations

• Very low-power ranger, excellent for

multiple sensor or battery based

systems

Range Outputs

• Pulse width, 1uS/mm resolution

• Analog Voltage, 5-mm resolution

(5-meter sensors)

• Serial, 1-mm resolution

• Available in RS232 (MB7360) or

TTL (MB7380)

General Characteristics

• Low cost ultrasonic rangefinder

• Sensor dead zone virtually gone

• Object proximity detection from

front sensor face to 5-meters

• Resolution of 1-mm

• Distance sensor from 30-cm to

5-meters or 10-meters with select

models

• Excellent

Mean Time Between

Failure (MTBF)

• Triggered operation yields real-time

range data

• Free run operation uses a 1.5Hz

filter, with 133mS measurement and

output cycle

(7.5 Hz output rate)

• Operating temperature range

from -40°C to +65°C

• Operating voltage from 2.7V to 5.5V

• Nominal current draw of 2.3mA at

3.3V, and 3.1mA at 5V

• IP67 Rated

Applications & Uses

• Snow sensor

• Weather station monitoring

• Tank level measurement

• Bin level measurement

• Proximity zone detection

• People detection

• Robot ranging sensor

• Autonomous navigation distance

measuring

• Long range object detection

• Environments with acoustic and

electrical noise

• Height monitors

• Auto sizing

• Box dimensions

• Automated factory systems

• This product is not recommended as

a device for personal safety

Notes:

Refer to section that compares WR to WRC on

page 11

Users are encouraged to evaluate the sensor

performance in their application

Reference page 9 for timing information specific to

MB7369, MB7389 part numbers

by design

The HRXL-MaxSonar-WR/WRC sensor line is the most cost-effective solution for applications

where precision range-finding, low-voltage operation, space saving, low-cost, and IP67 weather

resistance rating is needed. This sensor component module allows users of other more costly precision

rangefinders to lower the cost of their systems without sacrificing performance. Additionally, this

sensor line allows cost-sensitive designers to choose this precision sensor as a performance upgrade

over other lower performance sensors.

The HRXL-MaxSonar-WR/WRC sensor line provides high accuracy and high resolution ultrasonic proximity detection

and ranging in air, with an IP67 weather resistant rating. This sensor line features 1-mm resolution, target-size and

operating-voltage compensation for improved accuracy, superior rejection of outside noise sources, internal

speed-of-sound temperature compensation and optional external speed-of-sound temperature compensation. The

HRXL-MaxSonar-WR/WRC models are available in 5-meter models. This ultrasonic sensor detects objects from 1-mm

and ranges to objects from 30-cm to maximum range. Objects closer than 30-cm are typically reported as 30-cm. The

interface output formats are pulse width, analog voltage, and serial digital in either RS232 (MB7360 series) or TTL

(MB7380 series). Factory calibration is standard.

Summary of content (15 pages)

PAGE 1
HRXL-MaxSonar® - WR/WRC™ Series HRXL-MaxSonar®- WR/WRC™ Series High Resolution, IP67 Weather Resistant, Ultra Sonic Range Finder MB7360, MB7367, MB7369, MB7380, MB7387, MB7389 The HRXL-MaxSonar-WR/WRC sensor line is the most cost-effective solution for applications where precision range-finding, low-voltage operation, space saving, low-cost, and IP67 weather resistance rating is needed.
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HRXL-MaxSonar® - WR/WRC™ Series HRXL-MaxSonar®-WR™ Circuit The sensor functions using a variety active components which create an excellent ultrasonic sensor solution. The schematic is shown to provide the user with detailed connection information. __________________________________________________________________________________________ ® ™ HRXL-MaxSonar -WR Pin Out Pin 1- Temperature Sensor Connection: Leave this pin unconnected if an external temperature sensor is not used.
PAGE 3
HRXL-MaxSonar® - WR/WRC™ Series Auto Calibration Each time the HRXL-MaxSonar-WR takes a range reading, it calibrates itself. The sensor then uses this data to range objects. If the temperature, humidity, or applied voltage changes during sensor operation, the sensor will continue to function normally over the rated temperature range while applying compensation for changes caused by temperature and voltage.
PAGE 4
HRXL-MaxSonar® - WR/WRC™ Series Target Size Compensation Most low cost ultrasonic rangefinders will report the range to smaller size targets as farther than the actual distance. In addition, they may also report the range to larger size targets as closer than the actual distance. The HRXL-MaxSonar-WR sensor line compensates for target size differences.
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HRXL-MaxSonar® - WR/WRC™ Series HRXL-MaxSonar®-WR™ Mechanical Dimensions HRXL-MaxSonar®-WRC™ Mechanical Dimensions _______________________________________________________________________________________________________________________________________ Independent Sensor Operation The HRXL-MaxSonar-WR sensors have the capability to operate independently when the user desires. When using the HRXL-MaxSonar-WR sensors in single or independent sensor operation, it is easiest to allow the sensor to free-run.
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HRXL-MaxSonar® - WR/WRC™ Series Using Multiple Sensors in a single system When using multiple ultrasonic sensors in a single system, there can be interference (cross-talk) from the other sensors. Three methods are presented as an example for chaining the sensors. These methods of chaining work well to avoid the issue of cross-talk. The first method is AN Output Commanded Loop. The first sensor will range, then trigger the next sensor to range and so on for all the sensors in the array.
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HRXL-MaxSonar® - WR/WRC™ Series Operations and Timing _____________________________________________________________________________________________________________________________________ Most Likely Filter (MB7369 and MB7389) In general, the HRXL-MaxSonar-WRM will select the largest target from its field of view and report its range. Even so, objects up close may provide significantly greater returns than distant objects. Users are encouraged to test the sensor in their application to verify usability.
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HRXL-MaxSonar® - WR/WRC™ Series Operations and Timing Continued Real-Time Operation - Triggered (MB7360, MB7367, MB7380, MB7387) Real-time or triggered operation allows users to take advantage of a few functions unavailable during free run mode. When operating in triggered mode, an unfiltered maximum refresh rate of 7.5Hz can be achieved. This triggered operation allows users to range targets moving away from or closer to the sensor faster than 240mm/s.
PAGE 9
HRXL-MaxSonar® - WR/WRC™ Series Operations and Timing Continued Real-Time Operation - Triggered (MB7369, MB7389) Real-time or triggered operation allows users to take advantage of a few functions unavailable during free run mode. When operating in triggered mode, an unfiltered maximum refresh rate of 6.67Hz can be achieved. This triggered operation allows users to range targets moving away from or closer to the sensor faster than 240mm/s.
PAGE 10
HRXL-MaxSonar® - WR/WRC™ Series Operations and Timing Continued Sensor Operation: Free-Run When operating in free run mode, the HRXL-MaxSonar-WR sensors are designed to be used in a variety of outdoor, industrial, or indoor environments. Many acoustic noise sources will have little to no effect on the reported range of the HRXL-MaxSonar-WR sensors1. Most range readings are accurately reported1. If the range readings are affected, the effect is typically less than 5-mm1.
PAGE 11
HRXL-MaxSonar® - WR/WRC™ Series HRXL-MaxSonar-WRC (MB7367, MB7387) The 5-meter HRXL-MaxSonar-WR and HRXL-MaxSonar-WRM sensors are the most accurate sensor in the HRXL-MaxSonar-WR sensor line. The HRXL-MaxSonar-WRC is less accurate then the 5-meter HRXL-MaxSonar-WR sensors by 1.2%. The HRXL-MaxSonar-WRC also has a dead zone between 0-4cm. The HRXL-MaxSonar-WRC sensor is also the least sensitive sensor in the HRXL-MaxSonar-WR sensor line. The HRXL-MaxSonar-WRL sensors’ accuracy is 1.
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HRXL-MaxSonar® - WR/WRC™ Series MB7360-MB7380 HRXL-MaxSonar®-WR™ Beam Pattern and Uses The HRXL-MaxSonar-WR product line has a narrow sensor beam and provides reliable long range detection zones. MB7360-MB7380 Features and Benefits MB7360-MB7380 Applications and Uses • Factory calibrated beam width • Low operating voltages from 2.7V to 5.5V • All range outputs are active simultaneously • High acoustic sensitivity • • • • MaxBotix® Inc.
PAGE 13
HRXL-MaxSonar® - WR/WRC™ Series MB7369-MB7389 HRXL-MaxSonar®-WRM™ Beam Pattern and Uses The HRXL-MaxSonar-WRM product line has a narrow sensor beam and advance filtering that ranges to targets with the largest ultrasonic reflection, while ignoring smaller clutter. MB7369-MB7389 Features and Benefits MB7369-MB7389 Applications and Uses • Factory calibrated beam width • Low operating voltages from 2.7V to 5.
PAGE 14
HRXL-MaxSonar® - WR/WRC™ Series MB7367-MB7387 HRXL-MaxSonar®-WRC/WRCT™ Beam Pattern and Uses The HRXL-MaxSonar-WRC product line offer a more compact housing for use in applications where there are mounting or weight restrictions.
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HRXL-MaxSonar® - WR/WRC™ Series Have the right MaxSonar® for your application? Check out our MaxSonar® Product Lines Indoor Use Outdoor Use (or protected environments) (or rugged environments) IP67 • Power-up calibration • Very low cost • Real-time auto calibration • Real-time auto or power-up calibration • Real-time auto or power-up calibration • Very small size • Very low cost • Very low cost • Very low cost • Very small size • Very small size • Smallest WR 1 mm Resolution HRLV-MaxSonar-EZ