CA2049616A1 - Contactless test method and system for testing printed circuit boards - Google Patents

Contactless test method and system for testing printed circuit boards

Info

Publication number
CA2049616A1
CA2049616A1 CA2049616A CA2049616A CA2049616A1 CA 2049616 A1 CA2049616 A1 CA 2049616A1 CA 2049616 A CA2049616 A CA 2049616A CA 2049616 A CA2049616 A CA 2049616A CA 2049616 A1 CA2049616 A1 CA 2049616A1
Authority
CA
Canada
Prior art keywords
printed circuit
circuit boards
pattern
faulty
near field
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2049616A
Other languages
French (fr)
Other versions
CA2049616C (en
Inventor
Jacob Soiferman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2049616A1 publication Critical patent/CA2049616A1/en
Application granted granted Critical
Publication of CA2049616C publication Critical patent/CA2049616C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/302—Contactless testing
    • G01R31/308—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation
    • G01R31/309—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation of printed or hybrid circuits or circuit substrates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/302—Contactless testing
    • G01R31/315—Contactless testing by inductive methods

Abstract

This application describes a novel method and its implementation for testing unpopulated and populated electronic printed circuit boards (PCBs).
This method can be used to develop a new contactless test system (CTS). While eliminating drawbacks of existing test systems, this method measures electromagnetic near field distribution in the vicinity of a PCB, contactlessly, by using suitable sensors (possibly printed near field planar antennas) and sensitive measuring and processing devices. The electromagnetic fields (EMF) are generated by the distribution of charges and currents on paths and elements of the board under test (BUT). Therefore, accurate and repeatable measurements of these fields produce a specific pattern for the BUT. Such a pattern is then compared to a known pattern for the same type of board to determine whether the BUT is faulty or non-faulty.
CA002049616A 1991-01-22 1991-08-21 Contactless test method and system for testing printed circuit boards Expired - Fee Related CA2049616C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64335691A 1991-01-22 1991-01-22
US643,356 1991-01-22

Publications (2)

Publication Number Publication Date
CA2049616A1 true CA2049616A1 (en) 1992-07-23
CA2049616C CA2049616C (en) 2000-04-04

Family

ID=24580470

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002049616A Expired - Fee Related CA2049616C (en) 1991-01-22 1991-08-21 Contactless test method and system for testing printed circuit boards

Country Status (2)

Country Link
US (1) US5218294A (en)
CA (1) CA2049616C (en)

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Also Published As

Publication number Publication date
US5218294A (en) 1993-06-08
CA2049616C (en) 2000-04-04

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