CN2543044Y - Medical electronic balance - Google Patents
Medical electronic balance Download PDFInfo
- Publication number
- CN2543044Y CN2543044Y CN 02215839 CN02215839U CN2543044Y CN 2543044 Y CN2543044 Y CN 2543044Y CN 02215839 CN02215839 CN 02215839 CN 02215839 U CN02215839 U CN 02215839U CN 2543044 Y CN2543044 Y CN 2543044Y
- Authority
- CN
- China
- Prior art keywords
- electronic balance
- sensor
- amplifier
- medicine
- balance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a pharmacist electronic balance, comprising an electronic balance sensor, an amplifier, an A/D transducer, a CPU and a digital display element, and is characterized in that a high-performance transformer encapsulated with divided iron core duplex winding epoxy resin is adopted for a mains input end of the electronic balance; the output of the electronic balance sensor is connected with a single supply meter amplifier; the electronic balance sensor is connected with the earth through a lead. The utility model has the advantages that the leakage current is low; the pressure resistance is high; the security meets the need of a medical instrument; the electronic balance can substitute a medicine Roberval mechanical balance and a common electronic balance, and can be applied to the field of medicine weighing.
Description
Technical field
The utility model relates to a kind of medicine electronic balance that can replace former Drug shelf dish mechanical balance that is widely used and general electronic balance.
Background technology
Use the former Drug shelf dish mechanical balance that is widely used claim medicine be the time slow, precision is low, and do not reach the medical apparatus requirement with general electronic balance security, as do not consider leakage current, withstand voltage low only to reach 1500V lower, and sensor adopts many power supplys list amplifier, therefore, do not consider ground connection, therefore, have potential safety hazard in the use, humidity can cause the electricity electric shock etc. that rubs.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming of existing frame dish mechanical balance and general electronic balance, a kind of medicine electronic balance that can replace former Drug shelf dish mechanical balance that is widely used and general electronic balance to be provided.
The technical solution of the utility model is achieved like this, the medicine electronic balance comprises electronic balance sensor, amplifier, A/D converter, CPU and digital display unit, is characterized in that the power input of electronic balance adopts high-performance to divide iron core double winding epoxy encapsulation transformer; The output of electronic balance sensor is connected with the instrument amplifier of single supply, and the electronic balance sensor is by lead ground connection.
Owing to taked above-mentioned measure to make impedance＜0.1 Ω between all palp metal parts of protective ground point in the network source and protective ground; Ground leakage current＜0.5mA; Body leakage stream＜0.1mA; Should be able to bear between the shell of network source and protective ground and exchange the sinusoidal wave trial voltage of 50Hz, 4000V and do not have in 1 minute and puncture and flashover.Therefore, its replaces the former Drug shelf dish mechanical balance that is widely used and general electronic balance, can be widely used in the medicine field of weighing.
Description of drawings
Fig. 1 is transformer circuit figure,
Fig. 2 is sensor circuit figure.
Embodiment
The medicine electronic balance comprises electronic balance sensor, amplifier, A/D converter, CPU and digital display unit, and as shown in Figure 1, the power supply input transformer of electronic balance adopts high-performance to divide iron core double winding epoxy encapsulation transformer T; As shown in Figure 2, the output of electronic balance sensor 1 is connected with the instrument amplifier of single supply 2, and electronic balance sensor 1 is by lead 3 ground connection, and sectional area of wire can be 1mm
2
Claims (1)
1, a kind of medicine electronic balance, it comprises sensor, amplifier, A/D converter, CPU and digital display unit, it is characterized in that, the power supply input transformer of electronic balance adopts high-performance to divide iron core double winding epoxy encapsulation transformer T; The output of electronic balance sensor (1) is connected with the instrument amplifier (2) of single supply, and electronic balance sensor (1) is by lead (3) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02215839 CN2543044Y (en) | 2002-02-22 | 2002-02-22 | Medical electronic balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02215839 CN2543044Y (en) | 2002-02-22 | 2002-02-22 | Medical electronic balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2543044Y true CN2543044Y (en) | 2003-04-02 |
Family
ID=33694919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02215839 Expired - Fee Related CN2543044Y (en) | 2002-02-22 | 2002-02-22 | Medical electronic balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2543044Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288273A (en) * | 2011-07-04 | 2011-12-21 | 孟凡强 | Electro-optical analytical balance |
-
2002
- 2002-02-22 CN CN 02215839 patent/CN2543044Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288273A (en) * | 2011-07-04 | 2011-12-21 | 孟凡强 | Electro-optical analytical balance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |