It really depends on how fast it goes fast. And exactly what "less than 1mm" means. What frequency is it? It is possible none of them work for you.Hi All
Is it possible to use the low-cost accelerometers to measure the movement of vibration that is less than 1mm?
Or do I need the very high end versions?
I am trying to measure vibrations , when a car is driving pass a structure or building.It really depends on how fast it goes fast. And exactly what "less than 1mm" means. What frequency is it? It is possible none of them work for you.
Ummm. 1mn is huge. Or it's tiny. It depends on the frequency of the vibration.1mm is huge. However, it really depends on the actual application.
The building won't vibrate at the frequency it takes the car to pass. It will vibrate at its resonant frequency. It really depends on the modulous of the materials used to build the building and the exact geometry of the building.a car strolling down the street will take couple of seconds to pass one building. if traveling on highway that may be about a second per building. so frequency of buildings passed by is 1Hz or lower. my question is what system can be used in a car to create 1mm displacement when car is passing some buildings?
Well, the aim is to measure structural movement.I am thinking about using the following sensor:accelerometers measure acceleration, not distance. without context 1mm is meaningless. what acceleration is acting on the sensor when passing building? of course there is vertical component due to planet gravity (about 9.8m/s^2), there is also side acceleration due to mass of objects in the surroundings such as pedestrians, trees, traffic lights and of course buildings. i hope you are not trying to sense them using cheap accelerometer.
Well I am trying to notice any shock , rather then constant vibration.Ummm. 1mn is huge. Or it's tiny. It depends on the frequency of the vibration.
The sensor will be fixed onto the wall of the building.True but to detect that or measure such vibration, accelerometer would need to be attached to the building. How would one do such measurement if the sensor is in a car moving down the street?