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MB7386 Datasheet Preview

MB7386 Datasheet

HRXL-MaxSonar sensor

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HRXL-MaxSonar® - WR/WRCSeries
HRXL-MaxSonar®- WRSeries
High Resolution, Precision, IP67 Weather Resistant, Ultrasonic Range Finder
MB7360, MB7363, MB7366, MB7367, MB7368, MB7369, MB7375
MB7380, MB7383, MB7386, MB7387, MB7388, MB7389, MB73958
The HRXL-MaxSonar-WR sensor line is a cost-effective solution for applications requiring
precision range-finding, low-voltage operation, space saving, low-cost, and IP67 rating for weather
resistance.
The HRXL-MaxSonar-WR sensor line provides high accuracy and high resolution ultrasonic proximity
detection and ranging in air. 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 1.5-meter, 5-meter, or 10-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 digital serial in either RS232 (MB736X/MB7375) or TTL (MB738X/MB7395).
Factory calibration is standard. *For select sensors this distance is 50-cm, refer to pages 4 and 5.
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 typical1
Accuracy is factory-matched
providing a typical accuracy of 1%
or better 1,2
Internal temperature compensation is
standard and optional external
temperature compensation
Determines range to largest object
(MB7368, MB7369, MB7388, MB7389)
Determines range to first detectable
object (MB7360, MB7363, MB7366, MB7367,
MB7375, MB7380, MB7383, MB7386, MB7387,
MB7395)
Excellent clutter rejection
Additional chemical resistance
available6
Very Low Power
Requirements
Fast first reading after power-up
eases battery requirements
Wide, low supply voltage of 2.7V to
5.5V requirements eases battery
powered design
Low current draw reduces current
drain for battery operation
Very low-power rangerfinder,
excellent for multiple sensor or
battery based systems
Easy to Use Component
Module
Gracefully handles other ultrasonic
sensors5
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
Sensor automatically handles
acoustic noise 2,4
Calibrated sensor eliminates most
sensor to sensor variations
Applications & Uses
Tank level measurement
(MB7369 or MB7389)
Weather station monitoring
Bin level measurement
Proximity zone detection
People detection
Robot ranging sensor
Long range object detection
Environments with acoustic and
electrical noise
Height monitors
Auto sizing
Box dimensions
Automated factory systems
Notes:
1 Refer to section that compares WR to alternative
housings on page 4
2 Users are encouraged to evaluate the sensor performance
in their application
3 Reference pages 9-10 for part specific timing information
4 by design
5 See page 7 for multi-sensor operation
6 F-Option provides additional protection from hazardous
chemical environments
7 Please reference page 11 & 12 for minimum operating
voltage verses temperature information
8 Please reference page 24 for part number key
Close Range Operation
Applications requiring 100% reading-to-reading reliability should not use MaxSonar sensors at a distance closer than 50-
cm. Although most users find MaxSonar sensors to work reliably from 0 to 50-cm for detecting objects in many
applications, MaxBotix® Inc. does not guarantee operational reliability for objects closer than the minimum reported
distance. Because of ultrasonic physics, these sensors are unable to achieve 100% reliability at close distances.
_______________________________________________________________________________________________________________________________________
Warning: Personal Safety Applications
We do not recommend or endorse this product be used as a component in any personal safety applications. This product is
not designed, intended or authorized for such use. These sensors and controls do not include the self-checking redundant
circuitry needed for such use. Such unauthorized use may create a failure of the MaxBotix® Inc. product which may result
in personal injury or death. MaxBotix® Inc. will not be held liable for unauthorized use of this component.
MaxBotix® Inc.
Copyright 2005 - 2021 MaxBotix Incorporated
Patent 7,679,996
MaxBotix Inc., products are engineered and assembled in the USA.
Page 1
Web: www.maxbotix.com
PD11500ab




MaxBotix

MB7386 Datasheet Preview

MB7386 Datasheet

HRXL-MaxSonar sensor

No Preview Available !

General Characteristics
Low cost ultrasonic rangefinder
Detection out to 1.5-meters,
5-meters, or 10-meters
Resolution of 1-mm
Distance sensor from 30-cm to 1.5-
meters, 30-cm to 5-meters, or 50-
cm to 10-meters based on model
Excellent 2 Mean Time Between
Failure (MTBF)
HRXL-MaxSonar® - WR/WRCSeries
Triggered operation yields real-time
range data
Free run operation with superior
noise rejection 3
Operating temperature range
from -40°C to +65°C 7
Operating voltage of 2.7V to 5.5V7
Nominal current draw of 2.3mA
(peak ~49mA) at 3.3V, and 3.1mA
(peak ~98mA) at 5V
IP67 Rated
Range Outputs
Pulse width, 1uS/mm resolution
Analog Voltage, 5-mm resolution
(5-meter sensors)
Analog Voltage, 10-mm resolution
(1.5 and 10-meter sensors)
Serial, 1-mm resolution
Available in RS232 (MB736X and
MB7375) or TTL (MB738X and
MB7395)
______________________________________________________________________________________________________________________________________
HRXL-MaxSonar-WR Pin Out
Pin 1- Temperature Sensor Connection: Leave this pin unconnected if an external temperature sensor is not used. For best accuracy, this
pin is optionally connected to the HR-MaxTemp temperature sensor. Some additional information for the temperature sensor can be found on
page 10 of the datasheet.
Pin 2- Pulse Width Output: This pin outputs a pulse width representation of the distance with a scale factor of 1uS per mm. The pulse
width output is sent with a value within 0.5% of the serial output.
Pin 3- Analog Voltage Output: This pin outputs a single ended analog voltage scaled representation of the distance. This output is
referenced to the sensor ground and Vcc. After the ~50mS power up initialization, the voltage on this pin is set to a low voltage. Once the
sensor has completed a range reading the voltage on this pin is set to the voltage corresponding to the latest measured distance.
The 5-meter sensors (MB7360, MB7369, MB7380 and MB7389) use a scale factor of (Vcc/5120) per 1-mm. The distance is output with a 5-
mm resolution. The analog voltage output is typically within ±5-mm of the serial output.
The 1.5-meter sensors (MB7375 and MB7395) and 10-meter sensors (MB7363, MB7366, MB7368, MB7383, MB7386, and MB7388) use a
scale factor of (Vcc/10240) per 1-mm. The distance is output with a 10-mm resolution. The analog voltage output is typically within ±10-mm
of the serial output.
Using a 10-bit analog to digital converter with the 5-meter sensors, one can read the analog voltage counts (i.e. 0 to 1023) directly and just
multiply the number of counts in the value by 5 to yield the range in mm. For example, a converted value of 60 corresponds to 300-mm
(where 60 x 5 = 300), and 1000 counts corresponds to 5,000-mm (where 1000 x 5 = 5,000-mm).
Using a 10-bit analog to digital converter with the 10-meter sensors, one can read the analog voltage counts (i.e. 0 to 1023) directly and just
multiply the number of counts in the value by 10 to yield the range in mm. For example, 30 counts corresponds to 300-mm (where 30 x 10 =
300), and 1000 counts corresponds to 10,000-mm (where 1000 x 10 = 10,000-mm).
Pin 4- Ranging Start/Stop: This pin is internally pulled high. If this pin is left unconnected or held high, the sensor will continually
measure and output the range data. If held low, the HRXL-MaxSonar-WR will stop ranging. Bring high for 20uS or longer to command a
range reading.
Filtered Range Data: When pin 4 is left high on the sensors, the sensors will continue to range. The data that is output includes a filter for
increased accuracy. The sensors will output the range based on recent range information. The filter does not affect the speed at which data is
made available to the user but instead allows for more consistent range information to be presented. For sensor specific timing and filter
information refer to pages 8 and 9.
Real-time Range Data: When pin 4 is low and then brought high, the sensor will operate in real time and the first reading output will be the
range measured from this first commanded range reading. When the sensor tracks that the RX pin is low after each range reading, and then
the RX pin is brought high, unfiltered real time range information can be obtained. For timing information please refer to pages 8 and 9.
Pin 5-Serial Output: The MB736X/MB7375 sensors have an RS232 data format (with 0V to Vcc levels) and the MB738X/MB7395
sensors have a TTL outputs. The output is an ASCII capital R”, followed by four ASCII character digits representing the range in
millimeters, followed by a carriage return (ASCII 13). The maximum range reported is 4999 mm (5-meter models) or 9998 mm (10-meter
models). A range value of 5000 or 9999 corresponds to no target being detected in the field of view.
The serial data format is 9600 baud, 8 data bits, no parity, with one stop bit (9600-8-N-1).
Because the data is presented in a binary data format, the serial output is most accurate .
V+ Pin 6 - Positive Power, Vcc: The sensor operates on voltages from 2.7V - 5.5V DC. For best operation, the sensor requires that the DC
power be free from electrical noise. (For installations with known dirty electrical power, a 100uF capacitor and 10ohm resistor placed at the
sensor pins between V+ and GND will typically correct the electrical noise.) Please reference page 10 & 11 for minimum operating voltage
verses temperature information.
GND Pin 7 Sensor ground pin: DC return, and circuit common ground.
MaxBotix® Inc.
Copyright 2005 - 2021 MaxBotix Incorporated
Patent 7,679,996
MaxBotix Inc., products are engineered and assembled in the USA.
Page 2
Web: www.maxbotix.com
PD11500ab


Part Number MB7386
Description HRXL-MaxSonar sensor
Maker MaxBotix
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MB7386 Datasheet PDF






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