+86-183 216 72762
X
1

QQ设置

3

SKYPE 设置

4

阿里旺旺设置

5

电话号码管理

  • 18917252679
6

二维码管理

展开

Common problems in medical device medical safety and electromagnetic compatibility?


1. The display has poor anti-interference ability to the power frequency magnetic field. If the shield of the display is made of aluminum, the magnetic permeability of the aluminum is low, and the magnetic shielding performance is poor, resulting in poor anti-interference ability of the display; if using iron or stainless steel, The magnetic shielding performance will be much improved, thus solving the display's anti-interference ability to the power frequency magnetic field.


2. When the electronic endoscope is debugged, it is found that the image on the monitor interferes with a cable that may be a video signal transmitted from the machine to the image card, and interferes with the cable of the image card to the monitor by capacitive coupling. Causes a drop in image quality. One possible solution is to strengthen the shielding of that cable.


3. The low-frequency radiation interference of the X-ray machine is mainly caused by the common mode interference current caused by the inverter power supply. Generally, the shielding range exceeding the standard is about several megahertz, and the common mode choke can be added to the inverter power supply. Reduce interference. If there is a high frequency band (typically in the range of 200 MHz to 300 MHz to 1000 MHz), the radiation interference may exceed the standard, which may be caused by the computer host. The shielding performance can be improved by improving the electrical connection of various parts of the main chassis. Another reason may be the interconnection cable inside the product. Due to the large common mode current, the radiation emission of the product exceeds the standard, generally in the range of several tens of megahertz to 200 MHz to 300 MHz, which can improve the cable shielding or Add a ferrite magnetic ring to the cable to solve.



Friendly connection:
TEL:021-58189111
ADDRESS:BUILDING 3, NO.601, HUICHENG ROAD, NANHUI INDUSTRY GARDEN, SHANGHAI, CHINA
Copyright ©2018 - 2021 Shanghai Shiyin Photoelectric Instrument Co.,Ltd.