| 摘要 |
A stress monitoring device of magneto-elastic and magneto-electric effect type for lossless monitoring of stress on a member of ferromagnetic material (31), comprising a magnetic field generating element (34), a magneto-electric sensing element (32a, 32b), a support skeleton (33) and a controlling and adjusting instrument. The magnetic field generating element (34) can generate a magnetic field under the control of the controlling and adjusting instrument, so that the member of ferromagnetic material (31) is magnetised. The magneto-electric sensor element (32a, 32b) without power supply can directly generate an electrical signal V ME representing the magnetic field or the magnetically inductive intensity, which is then processed by the controlling and adjusting instrument to output a magnetic characteristic value V st corresponding to the variation of an external force. The correspondence between magnetic characteristic value V st and the stress on the member (31) is used to achieve the lossless stress monitoring of the member of ferromagnetic material (31). The support skeleton (33) is used to configure the magnetic field generating element (34) and fix the positions of the magneto-electric sensing element (32a, 32b). The stress monitoring device can achieve an online, real-time, lossless monitoring of a member of ferromagnetic material (31) as well as offline lossless monitoring. |
