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

Claim 1:
2. The method for parking detection and identification of the moveable apparatus according to claim 1, wherein before said magnetic field generator starts generating said magnetic field signal, said method further comprises following steps of:
measuring magnetic field by said first magnetic field sensor and said second magnetic field sensor respectively, wherein 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; and
calculating a front stage magnetic field measurement difference by said data processing unit, 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.