Sensor to measure force/torque in vacuum's nozzel hinge

[louisa!5]

How can i measure the force exerted by a person on the vacuum nozzle's hinge?

My idea is to cut the vacuum tube into two parts and place a 6 F/T sensor in the tube's connection. Would the measured force/torque be the same as the one at the hinge?

I would be very happy to hear other suggestion as an alternative to this sensor.

 

[danadak]

Can you post a pic of nozzle assembly, what it goes to, whats the hinge ....?


Regards, Dana.

 

[louisa!5]

Hi Dana, sorry for the late reply. Here is some pics of the hinge.

 

[danadak]

Maybe easiest low cost is strain gauge (Wheatstone Bridge config) -

Strain Gauge Fundamentals

Basics and fundamentals of strain measurements with focus on electric strain gauges and Experimental Stress Analysis.

www.hbm.com

If you need actual force use a micro to implement measurements -

https://www.cypress.com/file/111801/download

The above is single chip. Note I would not have done what author did here, use PGAs
as amps in differential signal path. Their G mismatch is too poor for this type of
application. Just use the DelSig (ADC) and its front end G trimmed amp settings.

If you just need a trip level then a comparator with Vref would do.

http://vishaypg.com/docs/50003/precsg.pdf

Regards, Dana,