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

Claim 0:
1. A method for parking detection and identification of moveable apparatus, comprising following steps of:
generating a magnetic field signal by a magnetic field generator disposed in said moveable apparatus, wherein an unique identifier for identifying said moveable apparatus is Morse-code encoded in said magnetic field signal; and
measuring magnetic field by (a) a first magnetic field sensor and a second magnetic field sensor of a magnetic field sensing apparatus respectively and calculating a magnetic field measurement difference by a data processing unit for obtaining said unique identifier via Morse-code decoding from said magnetic field measurement difference, wherein said magnetic field sensing apparatus is disposed in a moveable apparatus parking place or a peripheral area of said moveable apparatus parking place, wherein a first magnetic field measurement and a second magnetic field measurement are measured by said first magnetic field sensor and said second magnetic field sensor respectively, wherein said magnetic field measurement difference is a magnitude of a difference of said first magnetic field measurement and said second magnetic field measurement, or a magnitude of a difference of a first magnetic field component of said first magnetic field measurement along a characteristic direction and a second magnetic field component of said second magnetic field measurement along said characteristic direction, or (b) one of a first magnetic field sensor and a second magnetic field sensor of a magnetic field sensing apparatus, a magnetic field measurement is measured, and obtaining said unique identifier via Morse-code decoding from said magnetic field measurement, or a magnetic field component of said magnetic field measurement along a characteristic direction by a data processing unit, wherein said magnetic field sensing apparatus is disposed in a moveable apparatus parking place or a peripheral area of said moveable apparatus parking place.