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1. WO2002023206 - INSPECTION DEVICE AND INSPECTION METHOD

Publication Number WO/2002/023206
Publication Date 21.03.2002
International Application No. PCT/JP2001/007823
International Filing Date 10.09.2001
IPC
G01R 31/304 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
28Testing of electronic circuits, e.g. by signal tracer
302Contactless testing
304of printed or hybrid circuits
CPC
G01R 17/02
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
17Measuring arrangements involving comparison with a reference value, e.g. bridge
02Arrangements in which the value to be measured is automatically compared with a reference value
G01R 31/281
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
28Testing of electronic circuits, e.g. by signal tracer
2801Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
281Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
G01R 31/304
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
28Testing of electronic circuits, e.g. by signal tracer
302Contactless testing
304of printed or hybrid circuits
G01R 31/312
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
28Testing of electronic circuits, e.g. by signal tracer
302Contactless testing
312by capacitive methods
G01R 31/3183
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
28Testing of electronic circuits, e.g. by signal tracer
317Testing of digital circuits
3181Functional testing
3183Generation of test inputs, e.g. test vectors, patterns or sequences
G01R 31/50
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Applicants
  • OHT INC. [JP]/[JP] (AllExceptUS)
  • OKANO, Koji [JP]/[JP] (UsOnly)
  • ISHIOKA, Shogo [JP]/[JP] (UsOnly)
Inventors
  • OKANO, Koji
  • ISHIOKA, Shogo
Priority Data
2000-27550311.09.2000JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) INSPECTION DEVICE AND INSPECTION METHOD
(FR) DISPOSITIF ET PROCEDE D'INSPECTION
Abstract
(EN)
A circuit wiring branching in the middle thereof is inspected by using fewer non-contact sensors. A method of inspecting a branched circuit wiring having at least three ends, comprising the supply step of supplying an inspection signal to one end of the branched circuit wiring, the disposing step of disposing non-contact sensors that detect the inspection signal without contacting the branched circuit wiring at the other ends of the wiring, and the judging step of judging whether or not the wiring is disconnected based on the inspection signal detected by the non-contact sensors, characterized in that the disposing step allocates the other two ends to at least one non-contact sensor, and the judging step compares a specified threshold with the strength of the inspection signal detected by the non-contact sensors to which the other two ends are allocated to judge whether the wiring is disconnected or not.
(FR)
Cette invention se rapporte à l'inspection d'un câblage de circuit comprenant une dérivation centrale, au moyen d'un nombre réduit de capteurs sans contact. Elle concerne un procédé permet l'inspection du câblage d'un circuit à dérivation comprenant au moins trois extrémités. Ce procédé comprend une étape d'émission de signal consistant à envoyer un signal d'inspection dans une extrémité du câblage à dérivation, une étape de positionnement consistant à positionner au niveau des autres extrémités des capteurs sans contact qui détectent le signal d'inspection sans entrer en contact avec le câblage du circuit, et une étape d'évaluation consistant à déterminer à partir du signal d'inspection détecté par les capteurs sans contact si le câblage est déconnecté ou non. Ce procédé est caractérisé en ce que l'étape de positionnement comprend l'attribution des deux extrémités à au moins un capteur sans contact, et l'étape d'évaluation comprend une comparaison d'un seuil indiqué avec la puissance du signal d'inspection détecté par les capteurs sans contact surveillant les deux autres extrémités, afin de déterminer si le câblage est déconnecté ou non.
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