Test Methods of Visual Alarm Signal for Medical Alarm Systems
10.3969/j.issn.1671-7104.2014.03.017
- VernacularTitle:医用报警系统中视觉报警信号的测试方法
- Author:
Yun ZHANG
1
;
Yiding SUN
Author Information
1. 天津市医疗器械质量监督检验中心
- Keywords:
medical alarm system;
alarm indicator lights;
flashing frequency;
duty cycle;
test
- From:
Chinese Journal of Medical Instrumentation
2014;(3):219-221
- CountryChina
- Language:Chinese
-
Abstract:
This paper introduces several test methods of characteristics of alarm indicator lights which can be used in the medical alarm system to verify the compliance of YY 0709-2009. These methods include the direct measurement of the pulse current supply of the alarm signals, image analysing of a video and reception by photoelectric sensor. After the comparation of the advantages and disadvantages among these methods, this paper proposes a new method of signal reception. This method which used a silicon photocellas the sensor with light filter in its front, and amplified circuit in the output end then used an oscil ograph as the reviewer, has resolved the testing difficulties of the flashing signal simulating by LCD, and can be applied to test the alarm indicator lights in any medical electrical equipment.
