Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Ultrasonic Echo Ranging Sonar

Status
Not open for further replies.

roadster

Junior Member level 1
Joined
Mar 15, 2002
Messages
19
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
98
ultrasonic echo

Has anyone designed or know about Ultrasonic Sonar echo ranging I need to cover a distance from 1M to 12M this is for a collision avoidance type application. Any help or advice would be greatfully accepted or if anyone knows of another technology that would serve this purpose.

Thanks :roll:
 

flatulent

Advanced Member level 5
Joined
Jul 19, 2002
Messages
4,629
Helped
489
Reputation
980
Reaction score
150
Trophy points
1,343
Location
Middle Earth
Activity points
46,689
ultrasonic echo ranging reflection

Polaroid once used this systm on their film cameras. They sold the modules commercially.

Acoustics have the least false alarm problems and cost. You should try some sophisticated processing like having one transmitter and one receiver and frequency modulating the transmitted signal. (This is like the radio altitude measuring systems used on airplanes.)
 

Nobody

Full Member level 3
Joined
Oct 4, 2001
Messages
165
Helped
9
Reputation
16
Reaction score
7
Trophy points
1,298
Location
Formosa
Activity points
1,593
I try the fishing Ultrasonic Sonar and use it in land , it's cone for tx/rx is very sharp . I also found the major part to decide the distance is the transducer . Choose one efficent transducer would be helpful . You can buy the parts in fishing shop . The signals also can lose a lot in the hetero-junction reflection . So the fishing sonar use oil around the transducer to avoid the reflection in boundry between the water and boat .
 

dainis

Advanced Member level 4
Joined
May 15, 2001
Messages
1,126
Helped
53
Reputation
106
Reaction score
9
Trophy points
1,318
Activity points
9,271
The PSoC Range Finder is a simple, inexpensive ultrasonic distance meter that requires only the PSoC device, two 40-kHz ultrasonic transducers, two resistors, and two capacitors. Typical applications include positioning for robotics, generic distance measurement, and liquid-level measurement without contact.

h**p://w*w.circuitcellar.com/PSOC2002/winners/1.htm
h**p://w*w.circuitcellar.com/PSOC2002/winners/1.pdf
h**p://w*w.circuitcellar.com/PSOC2002/winners/1.zip
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top