WO2009120951A3 - Automated conformal coating inspection system and methods of use - Google Patents

Automated conformal coating inspection system and methods of use Download PDF

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Publication number
WO2009120951A3
WO2009120951A3 PCT/US2009/038541 US2009038541W WO2009120951A3 WO 2009120951 A3 WO2009120951 A3 WO 2009120951A3 US 2009038541 W US2009038541 W US 2009038541W WO 2009120951 A3 WO2009120951 A3 WO 2009120951A3
Authority
WO
WIPO (PCT)
Prior art keywords
pcb
camera
automated
conformal coating
image
Prior art date
Application number
PCT/US2009/038541
Other languages
French (fr)
Other versions
WO2009120951A2 (en
Inventor
Owen Y. Sit
Original Assignee
Nordson Corporation
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 Nordson Corporation filed Critical Nordson Corporation
Publication of WO2009120951A2 publication Critical patent/WO2009120951A2/en
Publication of WO2009120951A3 publication Critical patent/WO2009120951A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • 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
    • G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
    • G01R31/2805—Bare printed circuit boards
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10064—Fluorescence image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10141—Special mode during image acquisition
    • G06T2207/10152—Varying illumination
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30141—Printed circuit board [PCB]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0266—Marks, test patterns or identification means
    • H05K1/0269—Marks, test patterns or identification means for visual or optical inspection
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/28—Applying non-metallic protective coatings
    • H05K3/284—Applying non-metallic protective coatings for encapsulating mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/28—Applying non-metallic protective coatings
    • H05K3/285—Permanent coating compositions

Abstract

A system and method for automated inspection of conformal coatings on printed circuit boards (PCB) using ultraviolet lighting. Such conformal coating includes a tracer that fluoresces in the presence of the UV light. The automated system includes a board holder sub¬ system adapted to hold the PCB and an UV light source that directs UV light onto the conformal coating of the PCB. The system further includes a camera having a lens that captures images of the illuminated PCB. The system also includes a transport assembly that moves the camera and/or the board holder to aid in inspection of the PCB. The camera is adapted to convey the captured images to an image-processing computer, which is associated with the camera. The image-processing computer is configured for user interface with the system and to interpret the captured image for determining whether the PCB is property coated.
PCT/US2009/038541 2008-03-28 2009-03-27 Automated conformal coating inspection system and methods of use WO2009120951A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4035208P 2008-03-28 2008-03-28
US61/040,352 2008-03-28

Publications (2)

Publication Number Publication Date
WO2009120951A2 WO2009120951A2 (en) 2009-10-01
WO2009120951A3 true WO2009120951A3 (en) 2010-01-07

Family

ID=41114757

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/038541 WO2009120951A2 (en) 2008-03-28 2009-03-27 Automated conformal coating inspection system and methods of use

Country Status (1)

Country Link
WO (1) WO2009120951A2 (en)

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CN105021614A (en) * 2014-04-24 2015-11-04 奥蒂玛光学科技（深圳）有限公司 Detection equipment for circuit board and conveying mechanism for detection equipment
CN111580452B (en) * 2020-04-30 2021-05-11 北京机电研究所有限公司 Method for producing virtual identification of forge piece suitable for thermal deformation process

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CA2711620A1 (en) 2008-01-08 2009-07-16 Bluesky Medical Group Inc. Sustained variable negative pressure wound treatment and method of controlling same
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CN104684595B (en) 2012-03-12 2017-08-04 史密夫及内修公开有限公司 Decompressor and method
GB2514180A (en) * 2013-05-17 2014-11-19 Nanomex Ltd An optical inspection system
CN103969265A (en) * 2014-03-26 2014-08-06 宋剑锋 Application method of ultraviolet light in circuit board overhauling station
CN105021613B (en) * 2014-04-24 2018-08-07 奥蒂玛光学科技（深圳）有限公司 Circuit board double-side detection equipment
HUE049136T2 (en) 2015-04-27 2020-08-28 Smith & Nephew Reduced pressure apparatuses
WO2017153357A1 (en) 2016-03-07 2017-09-14 Smith & Nephew Plc Wound treatment apparatuses and methods with negative pressure source integrated into wound dressing
US11285047B2 (en) 2016-04-26 2022-03-29 Smith & Nephew Plc Wound dressings and methods of use with integrated negative pressure source having a fluid ingress inhibition component
CN109069710B (en) 2016-05-03 2022-04-12 史密夫及内修公开有限公司 Optimizing power delivery to a negative pressure source in a negative pressure therapy system
US11096831B2 (en) 2016-05-03 2021-08-24 Smith & Nephew Plc Negative pressure wound therapy device activation and control
JP6975172B2 (en) 2016-05-03 2021-12-01 スミス アンド ネフュー ピーエルシーSmith & Nephew Public Limited Company Systems and Methods for Driving Negative Pressure Sources in Negative Pressure Therapy Systems
SG11201809829UA (en) 2016-05-13 2018-12-28 Smith & Nephew Sensor enabled wound monitoring and therapy apparatus
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US11564847B2 (en) 2016-09-30 2023-01-31 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics
EP3592312B1 (en) 2017-03-08 2024-01-10 Smith & Nephew plc Negative pressure wound therapy device control in presence of fault condition
EP3592212A1 (en) 2017-03-09 2020-01-15 Smith & Nephew PLC Wound dressing, patch member and method of sensing one or more wound parameters
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AU2018253383A1 (en) 2017-04-11 2019-10-31 Smith & Nephew Plc Component positioning and stress relief for sensor enabled wound dressings
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AU2018269112A1 (en) 2017-05-15 2019-11-21 Smith & Nephew Plc Wound analysis device and method
JP7189159B2 (en) 2017-06-23 2022-12-13 スミス アンド ネフュー ピーエルシー Sensor placement for sensor-enabled wound monitoring or therapy
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CA3072006A1 (en) 2017-08-10 2019-02-14 Smith & Nephew Plc Positioning of sensors for sensor enabled wound monitoring or therapy
DE102017119233A1 (en) * 2017-08-23 2019-02-28 Dr. O. K. Wack Chemie Gmbh Method for checking the integrity of a protective coating applied to an electronic assembly
GB201804971D0 (en) 2018-03-28 2018-05-09 Smith & Nephew Electrostatic discharge protection for sensors in wound therapy
GB201718870D0 (en) 2017-11-15 2017-12-27 Smith & Nephew Inc Sensor enabled wound therapy dressings and systems
EP3681376A1 (en) * 2017-09-10 2020-07-22 Smith & Nephew PLC Systems and methods for inspection of encapsulation and components in sensor equipped wound dressings
CA3074780A1 (en) 2017-09-13 2019-03-21 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics
GB201718070D0 (en) 2017-11-01 2017-12-13 Smith & Nephew Negative pressure wound treatment apparatuses and methods with integrated electronics
GB201718859D0 (en) 2017-11-15 2017-12-27 Smith & Nephew Sensor positioning for sensor enabled wound therapy dressings and systems
WO2019063481A1 (en) 2017-09-27 2019-04-04 Smith & Nephew Plc Ph sensing for sensor enabled negative pressure wound monitoring and therapy apparatuses
EP3687396A1 (en) 2017-09-28 2020-08-05 Smith & Nephew plc Neurostimulation and monitoring using sensor enabled wound monitoring and therapy apparatus
GB201718072D0 (en) 2017-11-01 2017-12-13 Smith & Nephew Negative pressure wound treatment apparatuses and methods with integrated electronics
US11497653B2 (en) 2017-11-01 2022-11-15 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics
GB201718054D0 (en) 2017-11-01 2017-12-13 Smith & Nephew Sterilization of integrated negative pressure wound treatment apparatuses and sterilization methods
EP3709943A1 (en) 2017-11-15 2020-09-23 Smith & Nephew PLC Integrated sensor enabled wound monitoring and/or therapy dressings and systems
WO2020053290A1 (en) 2018-09-12 2020-03-19 Smith & Nephew Plc Device, apparatus and method of determining skin perfusion pressure
USD898925S1 (en) 2018-09-13 2020-10-13 Smith & Nephew Plc Medical dressing

Citations (3)

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EP0231941A2 (en) * 1986-02-05 1987-08-12 OMRON Corporation Method for inspection of printed circuit board assembly by arithmetic comparison of several pictures in different colours
US5060065A (en) * 1990-02-23 1991-10-22 Cimflex Teknowledge Corporation Apparatus and method for illuminating a printed circuit board for inspection
US6650022B1 (en) * 2002-09-11 2003-11-18 Motorola, Inc. Semiconductor device exhibiting enhanced pattern recognition when illuminated in a machine vision system

Patent Citations (3)

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EP0231941A2 (en) * 1986-02-05 1987-08-12 OMRON Corporation Method for inspection of printed circuit board assembly by arithmetic comparison of several pictures in different colours
US5060065A (en) * 1990-02-23 1991-10-22 Cimflex Teknowledge Corporation Apparatus and method for illuminating a printed circuit board for inspection
US6650022B1 (en) * 2002-09-11 2003-11-18 Motorola, Inc. Semiconductor device exhibiting enhanced pattern recognition when illuminated in a machine vision system

Non-Patent Citations (1)

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Title
MOGANTI ET AL.: "Automatic PCB Inspection Algorithms: A Survey.", COMPUTER VISION AND IMAGING UNDERSTANDING, vol. 63, no. 22, 1996, pages 287 - 313, Retrieved from the Internet <URL:http://citeseenc.ist.psu.edu/viewdoGdownload?doi=10.1.1.39.2668&rep=repl&type=pdi> [retrieved on 20090429] *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105021614A (en) * 2014-04-24 2015-11-04 奥蒂玛光学科技（深圳）有限公司 Detection equipment for circuit board and conveying mechanism for detection equipment
CN111580452B (en) * 2020-04-30 2021-05-11 北京机电研究所有限公司 Method for producing virtual identification of forge piece suitable for thermal deformation process

Also Published As

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