Surface Magnetic Flux Imager Using Cmos Threephase Lockin Camera

• doi: 10.1109/SENSOR.2003.1215314
• title: Surface magnetic flux imager using CMOS three-phase lock-in camera
• publisher: IEEE
• isbn: 0-7803-7731-1
• issn:
• partnum: 03TH8664
• rank: 3683
• access_type: LOCKED
• content_type: Conferences
• abstract: This paper proposes a new method of magneto-optical imaging which can observe the distribution of both amplitude and phase of AC magnetic field using the lock-in detection by means of a three-phase correlation image sensor (3PCIS). We successfully developed 64/spl times/64 and 100/spl times/100 devices using a multi-user CMOS process. We applied the imaging system to the leakage flux inspection of steel plates. It could observe amplitude and phase (direction and delay) of vertical flux components. The imager was also shown to provide rich clues for the horizontal flux components through observing fine movements of domain wall.
• article_number: 1215314
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1215314
• html_url: https://ieeexplore.ieee.org/document/1215314/
• abstract_url: https://ieeexplore.ieee.org/document/1215314/
• publication_title: TRANSDUCERS '03. 12th International Conference on Solid-State Sensors, Actuators and Microsystems. Digest of Technical Papers (Cat. No.03TH8664)
• conference_location: Boston, MA, USA
• conference_dates: 8-12 June 2003
• publication_number: 8626
• is_number: 27333
• publication_year: 2003
• publication_date: 8-12 June 2003
• start_page: 308
• end_page: 311 vol.1
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 85
• insert_date: 20030728
• index_terms:
  • ieee_terms:
    • Magnetic flux
    • CMOS image sensors
    • Cameras
    • Magnetooptic devices
    • Magnetic sensors
    • Phase detection
    • Image sensors
    • CMOS process
    • Inspection
    • Steel
  • dynamic_index_terms:
    • Magnetic Flux
    • Magnetic Flux Density
    • Magnetic Field
    • Phase Distribution
    • Steel Plate
    • Domain Wall
    • Amplitude Distribution
    • Leakage Flux
    • AC Magnetic Field
    • Lock-in Detection
    • Horizontal Flux
    • Field Of View
    • Reference Signal
    • Optical Flow
    • Harmonic Distortion
    • Magnetic Domain
    • Faraday Rotation
    • Faraday Effect
    • Magnetic Field Frequency
    • External Capacitor
• isbn_formats:
  • format: Print ISBN, value: 0-7803-7731-1, isbnType: Historical
• authors:
  • Author Name: S. Ando
    Affiliation: Department of Information Physics and Computing, University of Tokyo, Bunkyo, Tokyo, Japan
    Author URL: https://ieeexplore.ieee.org/author/37277226900
    ID: 37277226900
    Order: 1
    Author Affiliations:
    • Department of Information Physics and Computing, University of Tokyo, Bunkyo, Tokyo, Japan

Image Sensor

• sensor_type: CMOS
• resolution: 64 x 64, 100 x 100
• dynamic_range: 34 dB
• pixel_size: 9