Page 1 of 1

Vibration sensors help

Posted: Fri Mar 03, 2017 7:27 pm
by kadamb
Hello All

I am Kadamb from Singapore, I am a biologist and have a keen interest in developing a novel application of sensors. I need help from experts here. I am looking for sensor chip or components which can detect lowest possible vibration. For example earthquake sensors. The idea is to integrate vibration sensor chip. I have no idea which chip will be best for such applications.
Thanks a lot

Re: Vibration sensors help

Posted: Sat Mar 04, 2017 6:15 pm
by jremington
Describe the vibrations that you expect to encounter -- frequency and amplitude.

Earthquake sensors (seismometers) are extremely sensitive instruments, usually with coils and moving magnets as shown here:

There are no chips that are useful for long range earthquake detection, but inexpensive chip accelerometers might work for your application.

Re: Vibration sensors help

Posted: Tue Mar 07, 2017 4:53 pm
by brianuno
Why don't you start with an accelerometer? They are inexpensive. I picked one up at an electronic hobby store for about $12.00 plus sales tax. The unit is more complex than most sensors. It has 8 pins. Mine is the 3-axis type. I only want to detect motion, not direction of motion, therefore, the circuit I have in mind may be not require all pins. The sensitivity is supposed to be 2-3 g, sensitive enough to detect an earthquake. I have experienced many earthquakes.

Re: Vibration sensors help

Posted: Thu Mar 09, 2017 12:27 am
by kadamb
Thanks a lot for your suggestions