CN203898849U - Infusion appliance warning device based on capacitance voltage division - Google Patents
Infusion appliance warning device based on capacitance voltage division Download PDFInfo
- Publication number
- CN203898849U CN203898849U CN201420173118.XU CN201420173118U CN203898849U CN 203898849 U CN203898849 U CN 203898849U CN 201420173118 U CN201420173118 U CN 201420173118U CN 203898849 U CN203898849 U CN 203898849U
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- China
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- metal electrode
- processing unit
- signal processing
- infusion
- buzzer
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Abstract
The utility model provides an infusion appliance warning device based on capacitance voltage division. The infusion appliance warning device comprises a first metal electrode and a second metal electrode, wherein the first metal electrode is connected with a positive electrode of the a power supply through a connecting wire, a warning signal processing unit is connected with the positive electrode of the power supply, the second metal electrode is connected with the signal input end of the warning signal processing unit through a connecting wire, meanwhile, the second metal electrode is connected with the grounding end of the warning signal processing unit through a voltage dividing capacitor, the signal output end of the warning signal processing unit is connected with a buzzer, the first metal electrode and the second metal electrode are respectively inserted into liquid in an infusion bottle and an infusion appliance, during the infusion, whether the liquid in the infusion bottle is completely infused or not can be automatically detected, any action is not carried out when the liquid is not completely infused, and warning sound is given out when the liquid in the infusion bottle is completely infused. The infusion appliance warning device has the advantages that simplicity and reliability are realized, and the popularization and the application are convenient.
Description
Technical field
This utility model relates to transfusion device alarm technique field, is specifically related to a kind of alarming unit of infusion device based on capacitance partial pressure.
Background technology
Existing transfusion device warning device, mostly be to utilize liquid weight to change, the character such as liquid sound, light are carried out detection alarm, although can realize alarm function, be inconvenient to use but equipment is complicated, or warning device is produced on transfusion device and can only carries out disposable use.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of alarming unit of infusion device based on capacitance partial pressure, simple and reliable, is convenient to promote the use of.
In order to achieve the above object, the technical scheme that this utility model is taked is:
A kind of alarming unit of infusion device based on capacitance partial pressure, comprise the first metal electrode 1 and the second metal electrode 2, the first metal electrode 1 is connected with positive source by the first connecting line 3, alarm signal processing unit A is connected with positive source, the second metal electrode 2 is connected with the signal input part of alarm signal processing unit A by the second connecting line 4, the second metal electrode 2 is connected with the earth terminal of alarm signal processing unit A by dividing potential drop capacitor C simultaneously, the signal output part of alarm signal processing unit A is connected with buzzer B, the first metal electrode 1, the second metal electrode 2 inserts respectively in the liquid of infusion bottle 5 and transfusion device 6.
Described alarm signal processing unit A amplifies alarm signal with operational amplifier, after dividing potential drop capacitor C dividing potential drop signal voltage input operational amplifier, be connected with audion by amplifier and be used in conjunction with generation buzzer B driving signal, in the time that the interior liquid of infusion bottle 5 is totally lost, drive buzzer B to send alarm sound.
Described operational amplifier is LM358.
Described buzzer B is+5V active buzzer.
The advantage the utlity model has:
1, this utility model adopts capacitance-voltage-distributing type principle, and stable work in work easily realizes.
2, this utility model electrode and infusion set are separate, connect by the mode of plug, needn't change the ordinary construction of infusion set, thereby can obtain application more widely.
3, alarm unit of the present utility model is connected by connecting line with electrode, and electrode can take off separately, so just can make the alarm unit just can Reusability without any processing, in the time that used next time only with changing sterile electrode.
4, this utility model micro power consumption, while warning, power consumption is almost nil, and when warning, power consumption is identical with buzzer power.
5, this utility model alarm unit device used is few, and volume is little lightweight, easy to use.
Brief description of the drawings
Fig. 1 is this utility model structural representation.
Fig. 2 is this utility model metal electrode on position figure.
Fig. 3 is alarm unit circuit diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is described in detail.
With reference to Fig. 1, a kind of alarming unit of infusion device based on capacitance partial pressure, comprise the first metal electrode 1 and the second metal electrode 2, the first metal electrode 1 is connected with positive source by the first connecting line 3, alarm signal processing unit A is connected with positive source, the second metal electrode 2 is connected with the signal input part of alarm signal processing unit A by the second connecting line 4, the second metal electrode 2 is connected with the earth terminal of alarm signal processing unit A by dividing potential drop capacitor C simultaneously, the signal output part of alarm signal processing unit A is connected with buzzer B, with reference to Fig. 2, the first metal electrode 1, the second metal electrode 2 inserts respectively in the liquid of infusion bottle 5 and transfusion device 6.
With reference to Fig. 3, described alarm signal processing unit A amplifies alarm signal with operational amplifier, operational amplifier is LM358, buzzer B is+5V active buzzer, one end of the first connecting line 3, the second connecting line 4 is connected respectively to the first metal electrode J1 and the second metal electrode J2 place, after dividing potential drop capacitor C dividing potential drop signal voltage input operational amplifier, be connected with audion 2N3906 by amplifier and be used in conjunction with generation buzzer B driving signal, in the time that the interior liquid of infusion bottle 5 is totally lost, drive buzzer B to send alarm sound.
Operation principle of the present utility model is:
Can infusion bottle 5 automatically be detected in the time of transfusion in, whether liquid is totally lost, and does not carry out any action while not being totally lost, sends alarm sound in the time that liquid is totally lost in infusion bottle 5.Specifically, by the first metal electrode 1, the second reflection of metal electrode 2 to liquid, get dividing potential drop capacitor C both end voltage and make alarm signal, alarm signal processing unit A processes rear drive buzzer B to alarm signal, and buzzer B sends alarm sound.
Claims (4)
1. the alarming unit of infusion device based on capacitance partial pressure, comprise the first metal electrode (1) and the second metal electrode (2), it is characterized in that: the first metal electrode (1) is connected with positive source by the first connecting line (3), alarm signal processing unit (A) is connected with positive source, the second metal electrode (2) is connected with the signal input part of alarm signal processing unit (A) by the second connecting line (4), the second metal electrode (2) is connected with the earth terminal of alarm signal processing unit (A) by dividing potential drop electric capacity (C) simultaneously, the signal output part of alarm signal processing unit (A) is connected with buzzer (B), the first metal electrode (1), the second metal electrode (2) inserts respectively in the liquid of infusion bottle (5) and transfusion device (6).
2. a kind of alarming unit of infusion device based on capacitance partial pressure according to claim 1, it is characterized in that: described alarm signal processing unit (A) amplifies alarm signal with operational amplifier, after dividing potential drop electric capacity (C) dividing potential drop signal voltage input operational amplifier, be connected with audion by amplifier and be used in conjunction with generation buzzer (B) driving signal, in the time that liquid is totally lost in infusion bottle (5), drive buzzer (B) to send alarm sound.
3. a kind of alarming unit of infusion device based on capacitance partial pressure according to claim 2, is characterized in that: described operational amplifier is LM358.
4. a kind of alarming unit of infusion device based on capacitance partial pressure according to claim 1, is characterized in that: described buzzer (B) is+5V active buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173118.XU CN203898849U (en) | 2014-04-10 | 2014-04-10 | Infusion appliance warning device based on capacitance voltage division |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173118.XU CN203898849U (en) | 2014-04-10 | 2014-04-10 | Infusion appliance warning device based on capacitance voltage division |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203898849U true CN203898849U (en) | 2014-10-29 |
Family
ID=51773145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420173118.XU Expired - Fee Related CN203898849U (en) | 2014-04-10 | 2014-04-10 | Infusion appliance warning device based on capacitance voltage division |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203898849U (en) |
-
2014
- 2014-04-10 CN CN201420173118.XU patent/CN203898849U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20170410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |