The wireless torque sensor node is simple and easy to use. Simply fix the sensor node, battery and strain gauge to the rotary axis, measure the strain value of the rotary axis directly, transmit it wirelessly to the gateway or routing node in real time, and calculate the torque value using the strain-to-torque conversion formula within the acquisition control software.For long-term monitoring applications, conversion algorithms can also be embedded within the node to directly transmit torque values. The wireless torque sensor node greatly saves the labor and material resources consumed in testing due to repeated deployment of wired data acquisition equipment. The wireless digital signal transmission method eliminates the noise interference caused by long cable transmission and collector ring, and the whole measurement system has extremely high measurement accuracy and anti-interference capability. Wireless sensor nodes can form a huge wireless sensor network, supporting thousands of measurement points for simultaneous measurement.

A wind tunnel is a tube-like experimental equipment used to simulate the gas flow around a vehicle or entity by artificially generating and controlling the airflow, and to measure the effect of the gas on the entity as well as to observe the physical phenomena, which is an indispensable component in the development of a vehicle, and it plays an important role in the research and development of aerospace engineering.

Acceleration sensors are mainly used in automotive airbags, anti-lock braking systems, traction control systems, etc. In safety applications, fast response acceleration sensors are very important.