Motor shaft sensor based on graphene coating

• Main Authors: GUI JUNFENG, WU ZHENSHENG, WANG XINQI
• Format: Patent
• Language: Chinese; English
• Published: 04.09.2020
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

The invention relates to a motor shaft sensor based on a graphene coating. The motor shaft sensor comprises the graphene coating, a probe and an output circuit, the graphene coating is plated on the outer surface of the motor transmission shaft; the probe comprises a rigid metal detector and a built-in piezoelectric crystal; the rigid metal detector is fixedly connected with a stator of the motorthrough a support, wherein one end of the rigid metal detector is kept in contact with the graphene coating, and the other end of the rigid metal detector is connected with the built-in piezoelectriccrystal; the built-in piezo-electric crystal is used for sensing the pressure transmitted by the rigid metal detector from the transmission shaft of the tested motor and outputting a corresponding charge signal; and the output circuit is used for receiving the charge signal, and converting the charge signal into an electric signal and outputting the electric signal. The motor shaft sensor based onthe graphene coating has t