Torque detection device and torque detection assembly

A torque detection assembly, comprising:

• a shaft;
• and
• a torque detection device including at least one conductive ring and an internal device, wherein:
• the at least one conductive ring is disposed at the shaft;
• the at least one conductive ring receives a first power in a sliding contact manner;
• the internal device is disposed at the shaft and includes a torque sensing module, an internal voltage regulating circuit, and an internal control module, wherein:
• the torque sensing module senses a torque of the shaft and generates a corresponding electrical signal;
• the internal voltage regulating circuit is electrically connected to the at least one conductive ring;
• the internal voltage regulating circuit is controllable to change a voltage of the first power on the at least one conductive ring;
• the internal control module is electrically connected to the torque sensing module and the internal voltage regulating circuit;
• the internal control module determines the torque sensed by the torque sensing module based on the electrical signal;
• the internal control module controls the internal voltage regulating circuit to change the voltage of the first power on the at least one conductive ring based on the torque sensed by the torque sensing module to form a first varied voltage signal;
• the first varied voltage signal varies to be a first voltage or a second voltage, wherein the second voltage is less than the first voltage.