Hi,
Yes I will use shielded cables but there will still be noise. What I meant is that extra shielded cables would be expensive. I may have 3 meters cables so there is a lot of noise accumulations. I looked at Detecto but they do balances where they have a lot of spaces in the balances for...
Thank you for your answer,
I have been thinking of balancing the weight but the problem is that with a counterweight it would be very very cumbersome and I would have to move this extra weight! Also, the static force can change (I would know this change and I don't want to measure the force...
Yes the cables can be shielded but it can be very expensive and in an industrial application, there can be other noises. Also, shielded wires are not perfect and there will always have noises.
To be honest, I know that it is difficult to sense a small force over a great force but i am not 100$ sure why. Forget about the vibrations, and consider only electrically induced noise in the wires.
A -200 to 200N range sensor provide a signal between -5V and 5V. With a noise of for example...
Hi,
There is noise in a sensor. Even with no forces on it, there is noise for a hundred reasons, mainly in the cables going to the computer, small vibrations, etc...For large scale sensors, this noise is more important. No I am not trying to measure the dynamic load with it's effect on the...
Hi, thank you for your interest !
The noise does not come from the static force. Normally a strain gage sensor with a 2000N range will by itself have a lot of noise. It is why it is hard to obtain a small force. A lot of filtering implies bigger reaction time.
The dynamic force can vary, it...
Excuse me, later I said that some vibrations could mask the dynamic force. That is not true. If it was, it would not be possible to sense this force. The static force is really static. The problem is that a 1500N straing gage sensor is not sensible enough to sense a 1N force. In general it is...
Hi,
I haven't seen any posts on that subject before...I am new but I searched the database without any results...
The static load does not vary...it is static. The signal from a normal strain gage would be be noisy in comparison of the dynamic force because for a 1500N strain gage sensor there...
In fact there would be a static charge that will be constant. Let's say 1000N. The dynamic force amplitude would be maybe 5N. It is why I can't use a normal force sensor. The piezo force sensor would loose the static 1000N charge and could then sense the small forces. The problem is that the...
Hi,
I would like to know if someone has references or ideas about the use of a piezoelectric force sensor in parallel or in series with a normal force sensor.
The piezoelectric force sensor can sense dynamic forces but loses its charge. On the other hand the normal force sensor can't measure...
