According to news from the financial industry on March 18, 2024, according to an announcement from the State Intellectual Property Office, Shanghai Zhenhua Heavy Industries (Group) Co., Ltd. obtained a project called "A looseness detection device for fasteners and its detection method." Authorization announcement number CN108181659B, application date is February 2018.
The patent abstract shows that the present invention provides a looseness detection device for fasteners, including: a first component provided with a first coupling circuit; a second component provided with a second coupling circuit complementary to the first coupling circuit ; RFID chip; when the fastener is in a tightened state, the first coupling circuit and the second coupling circuit are connected, and the RFID chip is effective; when the fastener is in a loose state, the first coupling circuit and the second coupling circuit are not connected , the RFID chip fails. The invention also proposes a detection method of the looseness detection device. The looseness detection device adopts a passive RFID chip, which is easy to install and replace, has low cost, is waterproof and anti-vibration, and can be reused. It can detect and diagnose fastener looseness online, quickly and accurately, and has high detection efficiency.
