Torque Sensor

Question

Hello Element14 Community, I am trying to find a torque sensor like seen in this non-English video , any help would be greatly appreciated. Thanks Kas

michaelkellett · Answer

Are you looking for ready made sensors or are you willing/able to make them yourself. In one of the videos it seemed to me that he was measuring the resistance of tension springs - this would be quite tricky to get to work. In a different set up he was using a small load cell. I could find 100g ready made load cells on Aliexpress for £4.19 each and lots of different foil strain gauges for under £1 each. To use the load cells you need to be able to do precision machining and to use the raw gauges you need to learn how to stick them on to suitable metal parts (not easy !). MK

kas.lewis · Answer

Easiest solution is to use two or four load cells and with some basic physics use the force applied to the load cells to calculate the applied torque to whatever it is that the system is connected too. The other solution is just to have the wire run over a pulley that is pushing down/up on a load cell, this removes the need for torque equations and just relates the tension to force applied vertically downward/upwards onto the load cell allowing for a constant tension on the wire during winding. Kas

Torque Sensor

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