CN1696620A - Sensor for monitoring position of fluid level - Google Patents
Sensor for monitoring position of fluid level Download PDFInfo
- Publication number
- CN1696620A CN1696620A CN 200510050182 CN200510050182A CN1696620A CN 1696620 A CN1696620 A CN 1696620A CN 200510050182 CN200510050182 CN 200510050182 CN 200510050182 A CN200510050182 A CN 200510050182A CN 1696620 A CN1696620 A CN 1696620A
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- CN
- China
- Prior art keywords
- sensor
- thin slice
- fluid level
- monitoring position
- liquid
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- 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.)
- Pending
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A transducer for detecting liquid level position is composed of a thin plate, electrical heating component and temperature sensitive component on the thin plate. The present invention applies object different rate of change in air and in liquid to detect liquid level position and sticks the thin plate closely on outer shell of liquid container since the transducer is contact sensitive mode.
Description
Technical field
The present invention relates to a kind of sensor, can be used for supervision liquid level position.
Background technology
At present, generally need the people to guard during transfusion, often notice how much liquid also has, and nurse-call is handled again when liquid is totally lost soon.Automatically the method that monitors has the liquid level monitor that adopts the ultrasound wave principle, but this mode is because to material, shape and the environment sensitive of infusion bottle, probability of errors is bigger, the costliness of price comparison simultaneously.Adopt modes such as optical reflection to detect liquid level in addition, there are the problems referred to above equally in this.
Summary of the invention
The purpose of this invention is to provide a kind of sensor that is mounted on the monitoring position of fluid level of liquid container lateral wall.
The objective of the invention is to realize: by a thin slice, electrical heating is set and thermally sensitive parts are formed at this sheet surface by following proposal.
Described parts are made up of electric heater and temperature sensing device.Described thin slice is flexible flake or curved surface thin slice.
When the dress liquid container has liquid at the inwall place relative with thin slice or parts, electrical heating causes the temperature of thin slice or parts to raise smaller, when the dress liquid container did not have liquid at the inwall place relative with thin slice or parts, electrical heating caused the temperature of thin slice or parts to raise bigger; The difference of utilizing thin slice or parts to cause temperature to raise after electrical heating is connected with external electronic device by sensor and reaches the judgement liquid level position.
The present invention is owing to adopt object rate of temperature change different in gas and liquid, usefulness be the responsive monitoring position of fluid level of contact.Be that thin slice or parts are close on the outer wall of liquid container, so this is pollution-free to not influence of the liquid in the container.The temperature rising that the electrical heating of sensor causes is minimum to the influence of liquid, we can say that to transfusion be not influence, and cheap, uses when helping hospital's transfusion.
Description of drawings
Fig. 1 is a kind of structural principle synoptic diagram of the present invention;
Fig. 2 is an another kind of structural principle synoptic diagram of the present invention.
Embodiment
With reference to Fig. 1, the present invention is by thin slice 2 and on these thin slice 2 surfaces thermistor 3 is set and forms, and thermistor 3 is connected with power input line 1, and its responsive to temperature information is connected with alarm by incoming line 1.
With reference to Fig. 2, the present invention is made up of thin slice 2, heating resistor 5 and temperature sensing device 6, and heating resistor 5 is connected with power supply by incoming line 1, and temperature sensing device 6 is connected with alarm by output line 4.
Claims (3)
1, a kind of sensor of monitoring position of fluid level is characterized in that: electrical heating and thermally sensitive parts (2) are set by a thin slice (1), on this thin slice (1) surface form.
2, the sensor of monitoring position of fluid level according to claim 1 is characterized in that: described parts (2) are made up of electric heater (4) and temperature sensing device (5).
3, the sensor of monitoring position of fluid level according to claim 1 and 2 is characterized in that: described thin slice (1) is flexible flake or curved surface thin slice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050182 CN1696620A (en) | 2005-06-21 | 2005-06-21 | Sensor for monitoring position of fluid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050182 CN1696620A (en) | 2005-06-21 | 2005-06-21 | Sensor for monitoring position of fluid level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1696620A true CN1696620A (en) | 2005-11-16 |
Family
ID=35349445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510050182 Pending CN1696620A (en) | 2005-06-21 | 2005-06-21 | Sensor for monitoring position of fluid level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1696620A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196517A (en) * | 2013-03-14 | 2013-07-10 | 济南铁路天龙高新技术开发有限公司 | Hydraulic point machine oil tank oil level monitoring alarm device |
| CN103453869A (en) * | 2013-08-24 | 2013-12-18 | 丁勇 | Heat transmission bridge type sensor for measuring erosion and deposition depth on periphery of bridge steel pipe pile |
| CN108254041A (en) * | 2018-03-18 | 2018-07-06 | 李晨天 | Asynchronous-sampling thermal conductance type liquid level sensor |
-
2005
- 2005-06-21 CN CN 200510050182 patent/CN1696620A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196517A (en) * | 2013-03-14 | 2013-07-10 | 济南铁路天龙高新技术开发有限公司 | Hydraulic point machine oil tank oil level monitoring alarm device |
| CN103453869A (en) * | 2013-08-24 | 2013-12-18 | 丁勇 | Heat transmission bridge type sensor for measuring erosion and deposition depth on periphery of bridge steel pipe pile |
| CN103453869B (en) * | 2013-08-24 | 2015-12-02 | 丁勇 | Measure the heat transfer bridge type magnetic sensor of the bridge steel pile tube periphery erosion and deposition degree of depth |
| CN108254041A (en) * | 2018-03-18 | 2018-07-06 | 李晨天 | Asynchronous-sampling thermal conductance type liquid level sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |