Miniature scanning type of in-line shape-matching sensor

Kiyotoshi Okura; Hiroshi Goto; Koichi Imanaka

doi:10.1117/12.228838

22 December 1995 Miniature scanning type of in-line shape-matching sensor

Kiyotoshi Okura, Hiroshi Goto, Koichi Imanaka

Proceedings Volume 2595, Machine Tool, In-Line, and Robot Sensors and Controls; (1995) https://doi.org/10.1117/12.228838
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

We have developed a new type of scanning in-line shape-matching sensor with a miniature optical scanner based on a simple shape-matching algorithm. The sensor consists of a sensor head, a controller, an interface board and CPU. The sensor head, with dimensions of 30 by 40 by 40 mm³, consists of a miniature optical scanner, a laser diode with a collimator lens, a photo detector and an amplifier circuit. The controller consists of signal processing circuits which generate the scanning position information from the drive circuit of the scanner. The interface board inputs binary level signals to the CPU. The CPU is used for the calculation and judgement of the obtained data and for displaying the results of its output. The shape- matching is performed by comparing the obtained scanning data to the pre-inputted original data. The original data is inputted to the memory by scanning the beam on the correct status object. If both sets of data completely agree, it defines that detected object as equal to the original object. For comparison, the most typical parameter of the data, such as the pulse width or the number of pulses, is adapted. For example, in the case of size difference between screws, each pulse width of scanned data is changed. As a result, size detection can be achieved. As this scanning type sensor, not a CCD camera type, has features such as no external lighting, lower cost and miniature size, it could be applied in the area of simplified shape matching on the factor assembly line.

Citation Download Citation

Kiyotoshi Okura, Hiroshi Goto, and Koichi Imanaka "Miniature scanning type of in-line shape-matching sensor", Proc. SPIE 2595, Machine Tool, In-Line, and Robot Sensors and Controls, (22 December 1995); https://doi.org/10.1117/12.228838

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sensors

Optical scanning

Algorithm development

Head

Interfaces

CCD image sensors

Binary data

Show All Keywords

Keywords/Phrases

Search In:

Publication Years