CN206725041U - Non-intrusion type level gauging device - Google Patents
Non-intrusion type level gauging device Download PDFInfo
- Publication number
- CN206725041U CN206725041U CN201720304629.4U CN201720304629U CN206725041U CN 206725041 U CN206725041 U CN 206725041U CN 201720304629 U CN201720304629 U CN 201720304629U CN 206725041 U CN206725041 U CN 206725041U
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- China
- Prior art keywords
- liquid container
- transparent liquid
- fluorescent tube
- microprocessor
- image sensor
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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.)
- Expired - Fee Related
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- 239000007788 liquid Substances 0.000 claims abstract description 36
- 201000009310 astigmatism Diseases 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 238000003384 imaging method Methods 0.000 claims description 14
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a kind of simple in construction, strong adaptability, the degree of accuracy is high and can obtain the non-intrusion type level gauging device of real time data, provided with transparent liquid container（1）, in transparent liquid container（1）Side horizontally disposed have support（2）, in support（2）On be fixed with for gathering transparent liquid container（1）The cmos image sensor of image（3）, in transparent liquid container（1）Opposite side be provided with and cmos image sensor（3）The vertical astigmatism plate of optical axis（4）, in astigmatism plate（4）Center be provided with vertical fluorescent tube（5）, the transparent liquid container（1）Center line, cmos image sensor（3）Optical axis and fluorescent tube（5）Center line it is coplanar, the cmos image sensor（3）Output interface connect with microprocessor, microprocessor passes through lamp tube light source control circuit and fluorescent tube（5）Connect.
Description
Technical field
The utility model belongs to the measurement apparatus of liquid level, more particularly to a kind of simple in construction, strong adaptability, standard
Exactness is high and can obtain the non-intrusion type level gauging device of real time data.
Background technology
Liquid level refers to air and solution, solution and solution or the contact surface position height of solution and solid.Tradition
Level gauging be the artificial method for reading altitude scale, not only there is hand labor intensity it is high, it is artificial read it is intrinsic
The problem of error is big, and real time data can not be obtained., can be in nontransparent appearance with the development of ultrasonic wave and optical sensing technology
Device（Oil well, oil tank etc.）Upper setting emission type sensor, the estimation of liquid level is carried out using liquid level reflection interval etc., is overcome
The problem of labor intensity present in artificial reading is high and real time data can be obtained, but the stability and anti-noise of measurement can not be ensured
Property, still there is precision it is relatively low the problem of.In recent years, image processing techniques has been applied in the measurement of liquid level, is
Dimension calculation is carried out by the method for putting coloured buoy into liquid internal, and then obtains the height of liquid level, be i.e. intrusive mood liquid level
Elevation carrection.Although measurement accuracy increases, limited by a variety of environmental factors such as temperature, pressure, fluid to be measured, Er Qiecun
Mounting structure is complicated, bad adaptability the problem of, while still there is measurement error and alignment error.
The content of the invention
The utility model is to solve the above-mentioned technical problem present in prior art, there is provided a kind of simple in construction, suitable
Ying Xingqiang, the degree of accuracy is high and can obtain the non-intrusion type level gauging device of real time data.
Technical solution of the present utility model is：A kind of non-intrusion type level gauging device, provided with transparency liquid
Container, being horizontally disposed with the side of transparent liquid container has support, is fixed with support for gathering transparent liquid container figure
The CMOS imaging sensors of picture, the astigmatism vertical with CMOS image sensor optical axis is provided with the opposite side of transparent liquid container
Plate, vertical fluorescent tube, center line, the CMOS imaging sensors of the transparent liquid container are provided with the center of astigmatism plate
Optical axis and fluorescent tube center line it is coplanar, the output interface of the CMOS imaging sensors connects with microprocessor, micro- place
Reason device is connected by lamp tube light source control circuit with fluorescent tube.
Scattering light produced by fluorescent tube and astigmatism plate set by the utility model, it can protrude the liquid level in container accurate
Really it is shown in the image that CMOS imaging sensors gather in real time, reduces optical parallax, is easy to computer to the figure that collects
As being handled, the accurate detection at image liquid level edge is realized by difference edge detection operator, and then draw real-time liquid level
Altitude information, improve level gauging precision.Without being contacted with the fluid to be measured in container, not by temperature, pressure, it is tested
A variety of environmental factor limitations such as liquid, simple in construction, strong adaptability.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Below in conjunction with brief description of the drawings specific embodiment of the present utility model.As shown in Figure 1, 2：Hold provided with transparency liquid
Device 1, being horizontally disposed with the side of transparent liquid container 1 has support 2, is fixed with support 2 for gathering transparent liquid container 1
The CMOS imaging sensors 3 of image, OV9650 color cmos digital image sensors can be used, in the another of transparent liquid container 1
Side is provided with the astigmatism plate 4 vertical with the optical axis of CMOS imaging sensors 3, and vertical fluorescent tube is provided with the center of astigmatism plate 4
5, the center line of the center line of the transparent liquid container 1, the optical axis of CMOS imaging sensors 3 and fluorescent tube 5 is coplanar, institute
State the output interface and microprocessor of CMOS imaging sensors 3（ARM controller S3C2440）Connect, microprocessor passes through fluorescent tube
Control circuit for light source（The power driving circuits such as relay）Connect with fluorescent tube 5, the output of microprocessor and display screen and remote
Journey communication interface connects.
The course of work：
1. system is demarcated, the first-class measuring device master scale value as a reference value is obtained（Including actual height value and with
Corresponding to pixel value）, and preserve in the microprocessor；
2. microprocessor output signal controls fluorescent tube 5 to work by lamp tube light source control circuit, while starts CMOS
Imaging sensor 3, the light source that fluorescent tube 5 is sent are radiated in astigmatism plate 4, and the scattering light irradiation that astigmatism plate 4 is sent is being put
In on the liquid level in transparent liquid container 1, the collection in real time of CMOS imaging sensors has the image of liquid level, is sent into microprocessor；
3. microprocessor carries out gray processing processing for the coloured image that is obtained, and then it is filtered and enhancing processing,
The boundary point of image liquid level is calculated according to difference edge feature point detection and line fitting method, obtains Edge Feature Points
Edge pixel values；
4. microprocessor is contrasted the edge pixel values of obtained Edge Feature Points with standard value, and then acquisition pair
The height value answered, is shown and can be by remote communication interface teletransmission by display screen.
Claims (1)
- A kind of 1. non-intrusion type level gauging device, it is characterised in that：Provided with transparent liquid container（1）, in transparency liquid Container（1）Side horizontally disposed have support（2）, in support（2）On be fixed with for gathering transparent liquid container（1）Image CMOS imaging sensors（3）, in transparent liquid container（1）Opposite side be provided with and CMOS imaging sensors（3）Optical axis is vertical Astigmatism plate（4）, in astigmatism plate（4）Center be provided with vertical fluorescent tube（5）, the transparent liquid container（1）Center Line, CMOS imaging sensors（3）Optical axis and fluorescent tube（5）Center line it is coplanar, the CMOS imaging sensors（3）'s Output interface connects with microprocessor, and microprocessor passes through lamp tube light source control circuit and fluorescent tube（5）Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720304629.4U CN206725041U (en) | 2017-03-27 | 2017-03-27 | Non-intrusion type level gauging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720304629.4U CN206725041U (en) | 2017-03-27 | 2017-03-27 | Non-intrusion type level gauging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206725041U true CN206725041U (en) | 2017-12-08 |
Family
ID=60501504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720304629.4U Expired - Fee Related CN206725041U (en) | 2017-03-27 | 2017-03-27 | Non-intrusion type level gauging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206725041U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444574A (en) * | 2018-03-30 | 2018-08-24 | 南京理工大学 | A kind of device measuring liquid level using image analysis technology |
| CN110174063A (en) * | 2019-06-11 | 2019-08-27 | 上海工程技术大学 | A kind of neutral pen ink height detecting system and detection method based on machine vision |
| CN113029477A (en) * | 2021-03-11 | 2021-06-25 | 西南交通大学 | Photoelectric type multichannel communicating pipe liquid level bridge deflection measuring device and method |
| CN119147777A (en) * | 2024-11-18 | 2024-12-17 | 长春黄金研究院有限公司 | Constant volume device and control method thereof |
-
2017
- 2017-03-27 CN CN201720304629.4U patent/CN206725041U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444574A (en) * | 2018-03-30 | 2018-08-24 | 南京理工大学 | A kind of device measuring liquid level using image analysis technology |
| CN108444574B (en) * | 2018-03-30 | 2024-03-26 | 南京理工大学 | Device for measuring liquid level by image analysis technology |
| CN110174063A (en) * | 2019-06-11 | 2019-08-27 | 上海工程技术大学 | A kind of neutral pen ink height detecting system and detection method based on machine vision |
| CN113029477A (en) * | 2021-03-11 | 2021-06-25 | 西南交通大学 | Photoelectric type multichannel communicating pipe liquid level bridge deflection measuring device and method |
| CN119147777A (en) * | 2024-11-18 | 2024-12-17 | 长春黄金研究院有限公司 | Constant volume device and control method thereof |
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| 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: 20171208 Termination date: 20190327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |