The Ultrasonic Distance Measurement Module measures the time interval between emitting the ultrasonic pulses and receiving
the echo to determine the distance to nearby objects. The distance value is indicated by the pulse width of output signals. Advanced
signal processing technique is used in this module to enhance the measurement reliability.
Features
•
•
•
Digital output
Small blind zone
Rapid response time
(Unit: mm)
Applications
•
•
•
UAV
Robot
Height measurement
•
•
•
Smart street light
Industrial Safety
Autonomous delivery vehicle
Dimensions
21.60
TENTATIVE RELEASE:
This specification is based on design objectives and is strictly Preliminary and subject to change. Test data may exist, but this specification is subject to change based
on the results of additional testing and evaluation. Application specific specifications will be produced for approval prior to production product being released.
18.00
2.50
12.41
15.00
18.0
21.60
26.50
34.50
26.5
51.5
Ø4.11
Part No.
UM0090-000
Rev
A3
Title
Ultrasonic Distance Measurement Module
www.audiowell-international.com
Sheet No.
1 of 5
Audiowell International Inc.
Phone: 770.375.5597
Email: Melanie@audiowell-international.com
ksl 2-2018
Product Specification
Electrical Specifications
Theory
Properties
Measuring Range
Frequency
Resolution
Response Time
Power-up delay
Blind zone
Detect cycle
Reading Update Frequency
Output Format
Output
Trigger mode
Rated Operating Condition
Working environment
Operation Temperature
Storage Temperature
Relative humidity
Power Supply
Power supply voltage
Working current
Ultrasonic
17 ~ 300cm (object: flat surface)
58kHz
<1cm
<1ms
≤1s
17cm
Every 10ms
50Hz (Every 20ms)
Measured distrance via serial port (unit: cm)
Low Level, pulse width
≥50us
Indoors/Outdoors
-40
~ +80 °C
-40
~ +85 °C
≤95%
(No condensation)
5V DC
≤
10mA
TENTATIVE RELEASE:
This specification is based on design objectives and is strictly Preliminary and subject to change. Test data may exist, but this specification is subject to change based
on the results of additional testing and evaluation. Application specific specifications will be produced for approval prior to production product being released.
Part No.
UM0090-000
Rev
A3
Title
Ultrasonic Distance Measurement Module
www.audiowell-international.com
Sheet No.
2 of 5
Audiowell International Inc.
Phone: 770.375.5597
Email: Melanie@audiowell-international.com
ksl 2-2018
Product Specification
Assembly Diagram
Response Curves
Horizontal Envelope
Unit: cm
Curves; round bar, 7.5cm
Unit: cm
Vertical Envelope
Curves; round bar, 7.5cm
0
Note: The inner area of the arc or ultrasonic waves can be sensed to
Ø7.5cm round bar area
TENTATIVE RELEASE:
This specification is based on design objectives and is strictly Preliminary and subject to change. Test data may exist, but this specification is subject to change based
on the results of additional testing and evaluation. Application specific specifications will be produced for approval prior to production product being released.
Part No.
UM0090-000
Rev
A3
Title
Measurement module
Measurement
module
0
Note: The inner area of the arc
or ultrasonic waves can be
sensed to Ø7.5cm round bar area
Ultrasonic Distance Measurement Module
www.audiowell-international.com
Sheet No.
3 of 5
Audiowell International Inc.
Phone: 770.375.5597
Email: Melanie@audiowell-international.com
ksl 2-2018
Product Specification
Output Protocol
Interface Definition:
A 4 pin XH1.0 terminal is used for output, which is defined in the following diagram. The module goes into dormant state after
power up. It can be woken up by a low pulse longer than 50us and output distance value which is in the range of 17-300cm. When
the measurement is completed, the module automatically enters a dormant state until it is woken up again by a low pulse longer than
50us.
Pin No.
1
2
3
4
Function of pin
VCC
GND
OUTPUT
RX
Lead Wire Color
Red
Black
White
Yellow
Remark
DC 5V
GND
Level output
Level output
TENTATIVE RELEASE:
This specification is based on design objectives and is strictly Preliminary and subject to change. Test data may exist, but this specification is subject to change based
on the results of additional testing and evaluation. Application specific specifications will be produced for approval prior to production product being released.
Part No.
UM0090-000
Rev
A3
Title
Ultrasonic Distance Measurement Module
www.audiowell-international.com
Sheet No.
4 of 5
Audiowell International Inc.
Phone: 770.375.5597
Email: Melanie@audiowell-international.com
ksl 2-2018
Product Specification
UART (TTL level) Communication Protocol
The measurement result is outputted by UART (TTL level), the unit is cm. Every 10bit is a data frame, of which the format is as
follows:
bit 1
bit 2
bit 3
start bit
Baud rate: 9600 bps
bi t4
bit 5
bit 6
data bit
bit 7
bit 8
bit 9
bit 10
stop bit
Data Format
1.
2.
3.
4.
5.
6.
Send character
“n”
in character mode, 1 byte.
Send character
“1”
in character mode, 1 byte.
Send decimal character
“.”
in character mode, 1 byte.
Send character
“v”
in character mode, 1 byte.
Send character
“a”
in character mode, 1 byte.
Send character
“1”
in character mode, 1 byte.
7.
8.
9.
Send character
“=“
in character mode, 1 byte.
Send the hundreds digit of the measurement result in character mode, 1 byte.
Send the tens digit of the measurement result in character mode, 1 byte.
10. Send the single digit of the measurement result in character mode, 1 byte.
11. Send the terminator
“0xff”.
Example: n1.val=125 means the distance between the module and the object is 125cm
Revision History:
Version
A2.0
A3.0
Date (MM/DD/YY) DWN
12/05/2017
6/7/2018
Statement
Updated dimensions
Added wiring diagram
TENTATIVE RELEASE:
This specification is based on design objectives and is strictly Preliminary and subject to change. Test data may exist, but this specification is subject to change based
on the results of additional testing and evaluation. Application specific specifications will be produced for approval prior to production product being released.
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