CN113966163A - Design method for electromagnetic compatibility structure of medical instrument host - Google Patents
Design method for electromagnetic compatibility structure of medical instrument host Download PDFInfo
- Publication number
- CN113966163A CN113966163A CN202110654464.4A CN202110654464A CN113966163A CN 113966163 A CN113966163 A CN 113966163A CN 202110654464 A CN202110654464 A CN 202110654464A CN 113966163 A CN113966163 A CN 113966163A
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- Prior art keywords
- shell
- electromagnetic compatibility
- inner shielding
- shielding shell
- electromagnetic
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0049—Casings being metallic containers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/005—Casings being nesting containers
Abstract
A design method for electromagnetic compatibility structure of medical instrument host mainly comprises an outer shell and an inner shielding shell, which is called shell-in-shell for short. The shell can be made of metal materials or nonmetal materials, and when the shell is made of good conductors such as metal materials, the shell needs to be insulated from the inner shielding shell; the inner shielding shell is made of galvanized steel sheet or aluminum sheet metal material and is connected with a protective ground; when solving the serious electromagnetic compatibility problem, the inner shielding shell can be sprayed and coated with the electromagnetic radiation absorbing material.
Description
Technical Field
The invention particularly relates to a design method of an electromagnetic compatibility structure of a medical instrument host.
Background
Medical devices must be designed for electromagnetic compatibility in order to meet the requirements of legal and related standards. Electromagnetic compatibility emc (electromagnetic compatibility): refers to the ability of a device or system to function properly in its electromagnetic environment without creating unacceptable electromagnetic disturbance to anything in the environment. On one hand, the electromagnetic interference generated to the environment of the equipment cannot exceed a certain limit value in the normal operation process; another aspect is that the appliance has a degree of immunity to electromagnetic interference present in the environment, i.e., electromagnetic susceptibility. In order to improve the safety and effectiveness of medical equipment and prevent medical equipment from being out of control and invalid to hurt patients and users due to electromagnetic interference or electromagnetic disturbance in use, the electromagnetic compatibility of the equipment or system is designed.
The shell of the existing medical apparatus or equipment host is generally in a metal or nonmetal type, and when the shell is made of metal materials, the shell is protected and grounded, and electric appliance component devices and the like are arranged in the shell.
The power input application environment of the medical institution is mostly a multi-hole socket of a wiring board, and the phenomenon of poor grounding protection is more.
The above design of the medical apparatus or device housing has the following defects:
(1) the shell protects the ground, the electric shock risk of the human body occurs when the single fault, namely the protection grounding plug, is in poor contact; (2) the test of the electromagnetic compatibility standard is difficult to pass; easily radiate or emit beyond standard, etc.
Disclosure of Invention
The invention aims to provide a design method of an electromagnetic compatibility structure of a medical instrument host.
The method is based on the design of a host machine shell and an inner shielding shell, which is called a shell-in-shell for short.
The shell of the method can be made of metal materials or nonmetal materials, and is insulated from the inner shielding shell when the shell is made of good conductors such as metal materials; the inner shielding shell is made of galvanized steel sheets or multi-core metal plates including but not limited to iron, copper, aluminum and the like, and is connected with a protective ground; when solving the serious electromagnetic compatibility problem, the inner shielding shell can be additionally coated and pasted with an electromagnetic radiation absorbing material.
The principle is as follows: the inner shielding shell is connected with a protective ground and is insulated from the shell; the inner shielding shell is made of galvanized steel plates including but not limited to iron, copper, aluminum and other multi-core metal plates, so that the radiation of a space and the emission of a host electronic device are effectively prevented; the inner shielding shell can be added with electromagnetic radiation absorbing materials for spraying and pasting, and the serious electromagnetic compatibility problem is solved.
The invention is mainly characterized in that: (1) the inner shielding shell is connected with a protective ground and is insulated from the outer shell, so that when a single fault, namely poor contact of a protective grounding plug, the personal electric shock risk can be still prevented; (2) the electromagnetic compatibility problem of medical instruments is effectively solved; (3) the inner shielding shell can be added with electromagnetic radiation absorbing materials for spraying and pasting, and the more serious electromagnetic compatibility problem can be solved.
Drawings
Fig. 1 is an overall schematic diagram of a design method of an electromagnetic compatibility structure of a medical instrument host.
Reference numerals: 1. a host housing; 2. inner shield shell (with protection ground).
Detailed Description
The invention discloses a design method of an electromagnetic compatibility structure of a medical instrument host, and a person skilled in the art can appropriately improve process parameters by referring to the content. It is specifically intended that all such alterations and modifications that are obvious to those skilled in the art are deemed to be incorporated herein by reference, and that the techniques of the invention may be practiced and applied by those skilled in the art without departing from the spirit, scope and spirit of the invention, mutatis mutandis and combination as described herein.
Fig. 1 is an overall schematic diagram of a design method of an electromagnetic compatibility structure of a medical instrument host.
Referring to fig. 1, the design method for the electromagnetic compatibility structure of the medical instrument host disclosed by the invention comprises a host shell 1 and an inner shielding shell 2.
Wherein the outer shell 1 is made of a metal material or a non-metal material, and is insulated from the inner shield shell when the outer shell is made of a metal material.
The inner shielding shell 2 is made of galvanized steel sheet or a multi-core metal plate material including but not limited to iron, copper, aluminum and the like, and is connected with a protective ground; when solving the serious electromagnetic compatibility problem, the inner shielding shell can be additionally coated and pasted with an electromagnetic radiation absorbing material.
In the present invention, unless otherwise specified, scientific and technical terms used herein have the meanings that are commonly understood by those skilled in the art.
Claims (6)
1. A structure of medical instrument host machine electromagnetic compatibility is mainly composed of an outer shell and an inner shielding shell.
2. The structure of claim 1, wherein the outer shell is made of a good conductor such as metal material and is insulated from the inner shield shell.
3. The electromagnetic compatibility structure of medical device host of claim 1, wherein the inner shielding shell is made of galvanized steel or a multi-core metal plate material including but not limited to iron, copper, aluminum, etc.
4. The medical device host electromagnetic compatibility structure of claim 1, the inner shielding shell being connected to a protective ground.
5. The structure of claim 1, wherein the inner shielding shell is coated with an electromagnetic radiation absorbing material on the inside or outside thereof when solving a serious problem of electromagnetic compatibility.
6. The structure of claim 1, wherein the inner shielding shell is coated with an electromagnetic radiation absorbing material when solving a serious problem of electromagnetic compatibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110654464.4A CN113966163A (en) | 2021-06-11 | 2021-06-11 | Design method for electromagnetic compatibility structure of medical instrument host |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110654464.4A CN113966163A (en) | 2021-06-11 | 2021-06-11 | Design method for electromagnetic compatibility structure of medical instrument host |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113966163A true CN113966163A (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110654464.4A Pending CN113966163A (en) | 2021-06-11 | 2021-06-11 | Design method for electromagnetic compatibility structure of medical instrument host |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113966163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404730A (en) * | 2023-04-14 | 2023-07-07 | 河南翔宇医疗设备股份有限公司 | Method for eliminating electromagnetic radiation of medical instrument charging device |
-
2021
- 2021-06-11 CN CN202110654464.4A patent/CN113966163A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404730A (en) * | 2023-04-14 | 2023-07-07 | 河南翔宇医疗设备股份有限公司 | Method for eliminating electromagnetic radiation of medical instrument charging device |
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