Traditionally, the slip ring is used by the dynamic torque
sensor to transmit dynamic torque signals. This technology
is contact transmission technology, which will cause
contact resistance with increased wear. Further more, it is
easy to create noise interference and zero drift error
resulting in short life expectancy, high cost, and is not
adapted to harsh environment and high-speed measure. In
addition, it has high command in installation and its
debugging technology is also complex. While RF (Radio
Frequency) technology is the noncontact transmission
technology. Measure accuracy, reliability and service life
can be improved by taking advantage of the technology.
With the development of integrated circuits, wireless
transceiver devices can be made smaller and less power
consumption. With the gradual decline of the cost of RF
transmission, the cost of the RF system can also be reduced.
Therefore, RF technology has its outstanding advantages.
The dynamic torque measure system based on RF
technology has a good application prospect.