Prototype of Multi-Channel High-Tc SQUID Metallic Contaminant Detector for Large Sized Packaged Food

Saburo TANAKA; Takeyoshi OHTANI; Hans-Joachim KRAUSE

doi:10.1587/transele.E100.C.269

Open Access
Prototype of Multi-Channel High-Tc SQUID Metallic Contaminant Detector for Large Sized Packaged Food

Saburo TANAKA, Takeyoshi OHTANI, Hans-Joachim KRAUSE

Full Text Views

110

Share
Cite this

Free PDF (887.2KB)

Summary :

We report on the fabrication of a magnetic metallic contaminant detector using multi-channel high-Tc RF-SQUIDs (superconducting quantum interference devices) for large packaged food. For food safety finding small metallic contaminants is an important issue for a food manufacturer. Hence, a detection method for small sized contaminants is required. Some detection systems for food inspection using high-Tc SQUIDs have been reported to date. The system described here is different from the previous systems in its permitted size for inspection, being larger at 150mm in height × 300mm in width. For inspection of large sized food packages, improvement of the signal to noise ratio (SNR) is an important issue because the signal intensity is inversely proportional to the cube of the distance between the SQUID sensor and the object. Therefore a digital filter was introduced and its parameters were optimized. As a result, a steel ball as small as 0.5mm in diameter at a stand-off distance of 167mm was successfully detected with more than SNR = 3.3.

Publication: IEICE TRANSACTIONS on Electronics Vol.E100-C No.3 pp.269-273

Publication Date: 2017/03/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E100.C.269

Type of Manuscript: Special Section INVITED PAPER (Special Section on Leading-Edge Technologies of Superconducting Measurement Systems)

Category

Authors

Saburo TANAKA
  Toyohashi University of Technology
Takeyoshi OHTANI
  Toyohashi University of Technology
Hans-Joachim KRAUSE
  Forschungszentrum Jülich

Keyword

SQUID, detection, food contaminant digital filter

Cite this

Copy

Saburo TANAKA, Takeyoshi OHTANI, Hans-Joachim KRAUSE, "Prototype of Multi-Channel High-Tc SQUID Metallic Contaminant Detector for Large Sized Packaged Food" in IEICE TRANSACTIONS on Electronics, vol. E100-C, no. 3, pp. 269-273, March 2017, doi: 10.1587/transele.E100.C.269.
Abstract: We report on the fabrication of a magnetic metallic contaminant detector using multi-channel high-Tc RF-SQUIDs (superconducting quantum interference devices) for large packaged food. For food safety finding small metallic contaminants is an important issue for a food manufacturer. Hence, a detection method for small sized contaminants is required. Some detection systems for food inspection using high-Tc SQUIDs have been reported to date. The system described here is different from the previous systems in its permitted size for inspection, being larger at 150mm in height × 300mm in width. For inspection of large sized food packages, improvement of the signal to noise ratio (SNR) is an important issue because the signal intensity is inversely proportional to the cube of the distance between the SQUID sensor and the object. Therefore a digital filter was introduced and its parameters were optimized. As a result, a steel ball as small as 0.5mm in diameter at a stand-off distance of 167mm was successfully detected with more than SNR = 3.3.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E100.C.269/_p

Copy

@ARTICLE{e100-c_3_269,
author={Saburo TANAKA, Takeyoshi OHTANI, Hans-Joachim KRAUSE, },
journal={IEICE TRANSACTIONS on Electronics},
title={Prototype of Multi-Channel High-Tc SQUID Metallic Contaminant Detector for Large Sized Packaged Food},
year={2017},
volume={E100-C},
number={3},
pages={269-273},
abstract={We report on the fabrication of a magnetic metallic contaminant detector using multi-channel high-Tc RF-SQUIDs (superconducting quantum interference devices) for large packaged food. For food safety finding small metallic contaminants is an important issue for a food manufacturer. Hence, a detection method for small sized contaminants is required. Some detection systems for food inspection using high-Tc SQUIDs have been reported to date. The system described here is different from the previous systems in its permitted size for inspection, being larger at 150mm in height × 300mm in width. For inspection of large sized food packages, improvement of the signal to noise ratio (SNR) is an important issue because the signal intensity is inversely proportional to the cube of the distance between the SQUID sensor and the object. Therefore a digital filter was introduced and its parameters were optimized. As a result, a steel ball as small as 0.5mm in diameter at a stand-off distance of 167mm was successfully detected with more than SNR = 3.3.},
keywords={},
doi={10.1587/transele.E100.C.269},
ISSN={1745-1353},
month={March},}

Copy

TY - JOUR
TI - Prototype of Multi-Channel High-Tc SQUID Metallic Contaminant Detector for Large Sized Packaged Food
T2 - IEICE TRANSACTIONS on Electronics
SP - 269
EP - 273
AU - Saburo TANAKA
AU - Takeyoshi OHTANI
AU - Hans-Joachim KRAUSE
PY - 2017
DO - 10.1587/transele.E100.C.269
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E100-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 2017
AB - We report on the fabrication of a magnetic metallic contaminant detector using multi-channel high-Tc RF-SQUIDs (superconducting quantum interference devices) for large packaged food. For food safety finding small metallic contaminants is an important issue for a food manufacturer. Hence, a detection method for small sized contaminants is required. Some detection systems for food inspection using high-Tc SQUIDs have been reported to date. The system described here is different from the previous systems in its permitted size for inspection, being larger at 150mm in height × 300mm in width. For inspection of large sized food packages, improvement of the signal to noise ratio (SNR) is an important issue because the signal intensity is inversely proportional to the cube of the distance between the SQUID sensor and the object. Therefore a digital filter was introduced and its parameters were optimized. As a result, a steel ball as small as 0.5mm in diameter at a stand-off distance of 167mm was successfully detected with more than SNR = 3.3.
ER -