CN2164024Y - Level-detecting photoelectric sensor - Google Patents
Level-detecting photoelectric sensor Download PDFInfo
- Publication number
- CN2164024Y CN2164024Y CN 93209391 CN93209391U CN2164024Y CN 2164024 Y CN2164024 Y CN 2164024Y CN 93209391 CN93209391 CN 93209391 CN 93209391 U CN93209391 U CN 93209391U CN 2164024 Y CN2164024 Y CN 2164024Y
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- light
- liquid level
- photoelectric sensor
- light beam
- utility
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Abstract
The utility model provides a photoelectric sensor for measuring transparent liquid level in a transparent container or a transparent pipeline, which is composed of a light beam generator and a light beam receiver. The installation method of the utility model makes the light beam project into a container by an inclined mode, and the goal of measuring liquid level is achieved by using different property of refraction of light in different medium. The utility model has the advantages of simple structure and reliable operation and is suitable for food industry, etc.
Description
What the utility model was related is a kind of sensor of measuring liquid level, or rather, is a kind of photoelectric sensor of measuring transparent liquid level in transparent vessel or the transparent pipeline.
In many applications of commercial production or life, often need measure and monitor container or ducted liquid level, one of them typical example is exactly the supervision to liquid level in the infusion bottle of ward, and it is to realize one of requisite link that nurse automatically in the ward.A kind of existing method for monitoring is as shown in Figure 1: be provided with an infrared beam generator 3 and a receiver 4 in the outside of infusion bottle, they lay respectively at the two ends of any diameter of infusion bottle 1.When infrared beam by bottle in during liquid, light beam is by attenuating liquid, the light signal that receptacle receives a little less than; When liquid level was lower than beam path, the received light signal of receiver was then stronger, utilized the power of received signal to change, and whether the liquid that just can detect in the bottle outlet is lower than predetermined height.Yet the shortcoming of this method is to be not suitable for detecting colourless transparency liquid.Because soup has high aseptic requirement, does not allow to use any detection mode that directly contacts with soup, therefore can't use the various liquid-level detecting methods of widespread use in the industrial circle.
The purpose of this utility model just provides a kind of novel liquid level photoelectric sensor, and it is suitable for the liquid level with transparency liquid in non-contact mode measuring transparent vessel or the transparent pipeline.
When photoelectric liquid level sensor of the present utility model utilizes light beam to enter other different media with certain angle of inclination by a kind of medium, can produce the principle of the refraction of different angles, light-beam generator and receiver are arranged on the position of departing from transparent vessel or pipe centerline.Suitably determine the relative position of light-beam generator and light beam receptacle, make when the liquid level in the bottle is lower than the position of detecting device that the light beam that light-beam generator sends just in time receives for receiver; When the liquid level in the container is higher than the position of detecting device, because light beam passes transparent vessel wall or duct wall in the inclination mode and enters liquid different refractions can take place, thereby can not be received by the receiver, so just realized measuring the purpose of liquid level in transparent vessel or the transparent pipeline.
The utility model utilizes foolproof structure, and having solved known technology does not dexterously have the technical barrier that solves.Liquid level photoelectric sensor of the present utility model is not only applicable to automatic monitoring system for sickroom, and is applicable to the occasion that other need measure and monitor the liquid level in transparent vessel or the transparent pipeline, and for example to wine, beverage or the like transparency liquid detects.
Below with reference to accompanying drawing the utility model is described in detail.
Accompanying drawing 1 is the sketch of the liquid level sensor of known technology;
Accompanying drawing 2 is a liquid level photoelectric sensor of the present utility model;
Accompanying drawing 3 and accompanying drawing 4 have shown two kinds of different operating states of liquid level photoelectric sensor of the present utility model respectively.
As shown in Figure 2, liquid level photoelectric sensor of the present utility model comprises: light-beam generator 3 and beam receiver 4, and they can adopt the photoelectric sensor of any known type, for example infrared sensor etc.; Retainer spring frame 5, it is made by flexure strip, and is divided into reed 6 and reed 7 two parts, and wherein reed 6 is a trench structure, and reed 7 inserts in the groove of reed 6, and can be free to slide in described groove; Set screw 8 is used for the relative position of two reeds is fixed; Lead is drawn by light-beam generator and beam receiver, is connected with the surveying instrument (not shown).The similar of whole liquid level photoelectric sensor is in an earphone, wherein the effect of retainer spring frame 5 is to make whole liquid level photoelectric sensor to be clamped in easily on the measured container, and can adjust the installation site of photoelectric sensor on tested container.
Realize the purpose of this utility model, crucial a bit is the relative installation of suitably determining light-beam generator and light beam receptacle.Light beam passes through and do not pass through the liquid both of these case if the tested transparent vessel xsect center of circle to the hypotelorism of line between light-beam generator and the light beam receptacle, then can not correctly be distinguished; Otherwise if this hypertelorism, the angle on incident beam and the tested container outside surface between the incidence point normal is excessive, makes incident beam produce total reflection, can not correctly monitor too.Experiment shows that for most of transparency liquids, making the container cross section center of circle is that 1/2 to 4/5 of tested container radius just can make liquid level photoelectric sensor of the present utility model normally carry out work to the distance of line between light-beam generator and the light beam receptacle.
In use, retainer spring frame 5 is clipped on the reservation height of tested container 1, regulates the total length of retainer spring frame 5 by set screw 8, at light beam by under the situation of liquid, as shown in Figure 3, the light beam that light-beam generator 3 is sent just in time can be received by light beam receptacle 4.Under the correct situation in installation site, when light beam passed through liquid 2, as shown in Figure 4, incident beam produced the refraction of different angles, and light beam receptacle 4 can't accept light signal.In the case of necessary, a plurality of liquid level sensors of the present utility model can also be set, so that liquid level is more comprehensively monitored on tested container or pipeline.
Except retainer spring frame as shown in Figure 2, can also adopt other similar structures, light-beam generator and light beam receptacle are fixed on the desired location of tested container.
The utility model is simple in structure, is quick on the draw, and is with low cost, can be widely used in various industry and the sphere of life.
Claims (3)
1, a kind of liquid level photoelectric sensor, form by a light-beam generator and a light beam receptacle, they are installed on the outside surface of tested transparent vessel or transparent pipeline, it is characterized in that the light beam that above-mentioned light-beam generator sends injects tested transparent vessel in the mode that tilts.
2, liquid level photoelectric sensor as claimed in claim 1 is characterized in that the tested transparent vessel xsect center of circle to the distance of line between light-beam generator and the beam receiver is 1/2 to 4/5 of a vessel radius.
3, liquid level photoelectric sensor as claimed in claim 1 or 2, it is characterized in that described light-beam generator and beam receiver link together with arc retainer spring frame, described spring(-supported) mount is made up of two parts, by regulating the relative position between these two parts, whole sensor can be fixed on the appropriate location of tested container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209391 CN2164024Y (en) | 1993-04-17 | 1993-04-17 | Level-detecting photoelectric sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209391 CN2164024Y (en) | 1993-04-17 | 1993-04-17 | Level-detecting photoelectric sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164024Y true CN2164024Y (en) | 1994-05-04 |
Family
ID=33791593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93209391 Expired - Fee Related CN2164024Y (en) | 1993-04-17 | 1993-04-17 | Level-detecting photoelectric sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2164024Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822690A (en) * | 2013-12-10 | 2014-05-28 | 河海大学 | Infrared water level measurement device and measurement method thereof |
-
1993
- 1993-04-17 CN CN 93209391 patent/CN2164024Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822690A (en) * | 2013-12-10 | 2014-05-28 | 河海大学 | Infrared water level measurement device and measurement method thereof |
| CN103822690B (en) * | 2013-12-10 | 2016-08-31 | 河海大学 | Infrared light level measurement device and measuring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: GUO JINMING TO: REN YONGFENG |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Ren Yongfeng Patentee before: Guo Jinming |
|
| 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 |