Patent ID: 11893885
Assignee: NATIONAL CENTRAL UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. The system for parking detection and identification of the moveable apparatus according to claim 15, wherein before said magnetic field generator starts generating said magnetic field signal, a front stage first magnetic field measurement and a front stage second magnetic field measurement are measured by said first magnetic field sensor and said second magnetic field sensor respectively, said data processing unit calculates a front stage magnetic field measurement difference, wherein said front stage magnetic field measurement difference is a magnitude of a difference of said front stage first magnetic field measurement and said front stage second magnetic field measurement, or a magnitude of a difference of a front stage first magnetic field component of said front stage first magnetic field measurement along said characteristic direction and a front stage second magnetic field component of said front stage second magnetic field measurement along said characteristic direction, wherein a first near magnetic field variation for detecting said moveable apparatus entering said moveable apparatus parking place is occurred when said front stage magnetic field measurement difference is continuously greater than a first characteristic threshold within a first characteristic time period, or an average value of said front stage magnetic field measurement difference is greater than a first characteristic average threshold within a first characteristic average time period.