CN206177413U - Liquid height measuring device - Google Patents
Liquid height measuring device Download PDFInfo
- Publication number
- CN206177413U CN206177413U CN201621205991.8U CN201621205991U CN206177413U CN 206177413 U CN206177413 U CN 206177413U CN 201621205991 U CN201621205991 U CN 201621205991U CN 206177413 U CN206177413 U CN 206177413U
- Authority
- CN
- China
- Prior art keywords
- testee
- imaging lens
- fixing device
- height measuring
- measuring device
- 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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Abstract
The utility model discloses a liquid height measuring device, including area source, imaging lens, testee fixing device, image sensor, light screen shell and camera lens fixed bolster, testee fixing device is used for fixed testee, the one side at testee fixing device is installed to the area source, the opposite side at testee fixing device is installed to the camera lens fixed bolster, imaging lens is fixed in on the lens holder, lens holder fixed mounting is inside the light screen shell, image sensor is fixed in the inside imaging lens rear that just is located of light screen shell. The utility model discloses face the boundary point position based on the CCD sensor measurements object, it has a simple structure, and characteristics that resolution ratio is high can realize that liquid faces boundary point's measurement, especially transparent substance, improves accuracy of measurement through imaging lens, adjusts CCD sensor exposure time simultaneously and adjusts the definition that the object faces boundary point to further improve the measuring accuracy.
Description
Technical field
The utility model belongs to medical field of measuring technique, more particularly to a kind of liquid height measuring device.
Background technology
In order to predict the storage capability of material, it is easy to be monitored material, the detection in the industrial production carrying out thing position
With the important step that control is monitoring.Liquid level, boundary position and material position are referred to as thing position.The purpose of level gauging is to predict thing in container
The capacity of material.In most of industrial processes, in addition to the ordinary circumstances such as normal pressure, normal temperature, it is also possible to run into high temperature, height
The special circumstances such as pressure, inflammable and explosive, severe corrosive, then automatic detection and control for thing position require just higher.
Liquid level refers to the height of liquid medium liquid level in a reservoir, and liquid level gauge is the instrument for measuring liquid level.It is raw in industry
In product, liquid level is a critically important parameter, and level gauging has critical role in the industrial production, and what is had even directly affects
To the safety of production.In actual operating process, the requirement to level gauging is more and more, should be according to the requirement of different aspect
To select different types of liquid level gauge.According to the operation principle of liquid level gauge, direct-reading, floatage-type, condenser type, static pressure can be divided into
Formula, acoustics formula, ray type, optical fiber type and nuclear radiation formula.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of liquid height measuring device,
Its technical problem that can solve liquid level measurement.
The purpose of this utility model is realized using following technical scheme：
A kind of liquid height measuring device, including area source, imaging lens, testee fixing device, imageing sensor,
Shadow shield shell and camera lens fixed support；The testee fixing device is used to fix testee, and the area source is installed
In the side of testee fixing device, the camera lens fixed support is arranged on the opposite side of testee fixing device；It is described
Imaging lens are fixed on lens bracket, and the lens bracket is fixedly installed in shadow shield enclosure, the imaging lens position
Between testee fixing device and imageing sensor；
The area source is used to launch optical signal to a testee, and by optical signal transmission to imaging lens；
The imaging lens are used for the optical signal transmission that will receive to imageing sensor；
The optical signal that described image sensor is used to receive is converted into electric signal and by the electric signal transmission to
Device is managed to obtain the liquid level in testee.
Preferably, the area source is white light plane light source.It can further disclose area source and use color.
Preferably, described image sensor is ccd sensor.Which kind of imageing sensor it is further disclosed using.
Preferably, the ccd sensor is linear CCD sensor.Which kind of ccd sensor it is specifically disclosed using.
Preferably, described image sensor is located at 2 times of focal lengths of imaging lens.Its quality that can further lift imaging.
Compared to existing technology, the beneficial effects of the utility model are：
The utility model is based on ccd sensor measurement object critical point position, and it has simple structure, the spy of high resolution
Point, it is possible to achieve the measurement of liquid critical point, particularly transparent substance, measuring accuracy is improved by imaging lens, while adjusting
The section ccd sensor time for exposure adjusts the definition of object critical point, so as to further improve the accuracy of measurement.
Brief description of the drawings
Fig. 1 is a kind of structure chart of liquid height measuring device of the utility model；
Fig. 2 is a kind of decomposition chart of liquid height measuring device of the utility model.
Reference：1st, white light plane light source；2nd, testee fixing device；3rd, imaging lens；4th, ccd sensor；5th, hide
Tabula rasa shell；6th, camera lens fixed support.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the utility model is described further：
As depicted in figs. 1 and 2, the utility model provides a kind of liquid height measuring device, including area source, imaging lens
First 3, testee fixing device 2, imageing sensor, shadow shield shell 5 and camera lens fixed support 6；The testee is fixed
Device 2 is used to fix testee, and the testee is usually in test tube and test tube and is contained with liquid, the device is mainly used for
The liquid level of measurement examination liquid in pipe；The area source is arranged on the side of testee fixing device 2, and the camera lens is fixed
Support 6 is arranged on the opposite side of testee fixing device 2；The imaging lens 3 are fixed on camera lens fixed support 6, described
Camera lens fixed support 6 is fixedly installed in inside shadow shield shell 5, described image sensor be fixed on the inside of shadow shield shell 5 and
Positioned at the rear of imaging lens 3；The shadow shield shell 5 can cover imaging lens 3 to the ambient between ccd sensor 4,
Measurement of the ambient to liquid level is avoided to impact.
The area source is used to launch optical signal to a testee, and by optical signal transmission to imaging lens 3；The face
Light source is white light plane light source 1, and the diameter of white light plane light source 1 is greater than the diameter of imaging lens；The present embodiment can use it
His light source of color is also possible, but the adjustable white light source of light intensity is enabled to measure and reaches best effect, so
The adjustable white light plane light source 1 of light intensity is used in the present embodiment, the light source from other colors such as feux rouges or blue lights is also in fact
Corresponding measurement can be carried out.
The imaging lens 3 are used for the optical signal transmission that will receive to imageing sensor；Described image sensor is located at
At 2 times of focal lengths of imaging lens；The imaging lens 3 can be collected into the light at liquid medium edge in testee, light source by into
As realizing accurate telecentric imaging after camera lens 3, measured object critical point is incident upon on ccd sensor 4；
The optical signal that described image sensor is used to receive is converted into electric signal and by the electric signal transmission to
Reason device, the processor is calculated the liquid level of testee；Wherein, described image sensor is ccd sensor 4, described
Ccd sensor 4 is linear CCD sensor；The ccd sensor 4 can adjust object critical point by adjusting the time for exposure
Definition is so as to the position of the critical point of accurate judgment object.
The operation principle of the present embodiment：
The directional light that white light plane light source 1 is launched by after measured tube reach ccd image processing system because light is by quilt
When surveying liquid level, liquid is different to the refractive index of light from gas above.When being looked over from the side of ccd image processing system, energy
See that liquid level (liquid is referred to as liquid level with the interface of gas) is a black-tape line.As long as so measure black-tape line relative to
The height at measured tube bottom can calculate liquid level.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim
Within the scope of.
Claims (5)
1. a kind of liquid height measuring device, it is characterised in that including area source, imaging lens, testee fixing device, figure
As sensor, shadow shield shell and camera lens fixed support；The testee fixing device is used to fix testee, the face
Light source is arranged on the side of testee fixing device, and the camera lens fixed support is arranged on the another of testee fixing device
Side；The imaging lens are fixed on camera lens fixed support, and the camera lens fixed support is fixedly installed in shadow shield enclosure,
Described image sensor is fixed on shadow shield enclosure, and the imaging lens are located at testee fixing device and image sensing
Between device；
The area source is used to launch optical signal to a testee, and by optical signal transmission to imaging lens；
The imaging lens are used for the optical signal transmission that will receive to imageing sensor；
Described image sensor is used for the optical signal that will receive and is converted into electric signal and by the electric signal transmission a to processor
To obtain the liquid level in testee.
2. liquid height measuring device as claimed in claim 1, it is characterised in that the area source is white light plane light source.
3. liquid height measuring device as claimed in claim 1, it is characterised in that described image sensor is ccd sensor.
4. liquid height measuring device as claimed in claim 3, it is characterised in that the ccd sensor is line array CCD sensing
Device.
5. liquid height measuring device as claimed in claim 1, it is characterised in that described image sensor is located at imaging lens
At 2 times of focal lengths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621205991.8U CN206177413U (en) | 2016-11-08 | 2016-11-08 | Liquid height measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621205991.8U CN206177413U (en) | 2016-11-08 | 2016-11-08 | Liquid height measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206177413U true CN206177413U (en) | 2017-05-17 |
Family
ID=58683958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621205991.8U Expired - Fee Related CN206177413U (en) | 2016-11-08 | 2016-11-08 | Liquid height measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206177413U (en) |
-
2016
- 2016-11-08 CN CN201621205991.8U patent/CN206177413U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20211108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |