Auto-focus system based on general hardness tester

DOI

10.2991/msmee-17.2017.171How to use a DOI?

Keywords

focus, hardness tester, function

Abstract

Manual focus is general adapted in the traditional hardness tester, while the manual focus depends much on the tester, and the precision of the manual varies from tester to tester. Based on the basic principle of image processing of automatic focus, this paper presents auto-focus system applying a chip of STM32F407 as the host controller of hardness tester. Through the test, the system can get the focus position efficiently, and the accuracy is guaranteed.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Kunyang Cao
AU  - Xiaodong Lv
AU  - Jingtao Wang
AU  - Yimin Dong
AU  - Xiuchun Li
PY  - 2017/05
DA  - 2017/05
TI  - Auto-focus system based on general hardness tester
BT  - Proceedings of the 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017)
PB  - Atlantis Press
SP  - 883
EP  - 889
SN  - 2352-5401
UR  - https://doi.org/10.2991/msmee-17.2017.171
DO  - 10.2991/msmee-17.2017.171
ID  - Cao2017/05
ER  -