High precision medical laser power density meter based on AVR microcontroller
10.3760/cma.j.issn.1673-4181.2012.04.004
- VernacularTitle:基于AVR的高精度医用激光功率密度计
- Author:
Meiling KANG
;
Yingxin LI
;
Jichun YANG
;
Xiaoxi DONG
- Publication Type:Journal Article
- Keywords:
Pyroelectric detector;
Laser power density meter;
High-precision measurement;
AVR microcontroller
- From:
International Journal of Biomedical Engineering
2012;35(4):205-208,后插1
- CountryChina
- Language:Chinese
-
Abstract:
Objective To research and design a kind of high accuracy laser power density meter to measure laser power density in clinical medicine,in order to combine laser with clinical medicine well.Methods The pyroelectric detector was used to convert the laser signal to available electrical signal,preamplifier filter circuit and control circuit were designed to match the detector,and C was used for software programming.With the combination of hardware and software design,a high precision laser power density meter was developed,which was based on AVR microcontroller.Results The instrument could measure the minimum 1 mW/cm2 of laser power density accurately and the error rate was 2％,which met the requirements of the laser power density meter parameters in medical application.Conclusion The power density meter has a high precision,small error rate and good stability,and it can measure the laser power density accurately.
