According to earlier discussion, the following requirements were set for the wireless torque measurement
system. Firstly, the battery should stand at least 8 hour measurement periods. Structure of the system should
be based on utilization of commercially available modules. Sampling frequency of torque measurement
should be at least 1000 Hz, and 16-bit A/D converters should be used. Plastic collars are used for fast on
shaft unit attachment. Commercially available strain gauge collar with compatible low noise amplifier is
used. Only mandatory signal processing is done in on shaft unit.