CN110501054A - Liquid level test macro based on CCD - Google Patents
Liquid level test macro based on CCD Download PDFInfo
- Publication number
- CN110501054A CN110501054A CN201810479018.2A CN201810479018A CN110501054A CN 110501054 A CN110501054 A CN 110501054A CN 201810479018 A CN201810479018 A CN 201810479018A CN 110501054 A CN110501054 A CN 110501054A
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- CN
- China
- Prior art keywords
- ccd
- ccd sensor
- liquid level
- microcontroller
- test macro
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000011897 real-time detection Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 5
- 239000012085 test solution Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses the liquid level test macros based on CCD comprising source of parallel light, ccd sensor, microcontroller and host computer；The system is as a kind of very effective non-contact detection system, in the case where not contacting fluid to be measured, is capable of the height change of real-time detection liquid；The test macro has many advantages, such as high sensitivity, compact-sized, easy to operate, at low cost.
Description
Technical field
The present invention relates to the liquid level test macros based on CCD, can be used for the detection to liquid position.
Background technique
CCD (Change-coupledDevice) detection refers to the vision that camera shooting realization is carried out using charge coupling device
CCD technology, image processing techniques are combined with traditional measurement method, can capture more measurands by detection method
Optical information, realize quick, accurate, high-precision noncontacting measurement, significantly improve that measuring technique is horizontal and intelligent level,
The noncontact measurement of imaging sensor based on CCD has become the hot spot of industrial measurement and control area research.
So-called level sensing, the i.e. measurement to liquid relative position in container.Traditional measurement method, which generally requires, to be surveyed
Metering device is contacted with fluid to be measured, and this method reaction speed is slow, and measurement error is big, while to compared with strongly corrosion liquid
Level gauging can shorten the service life of measurement device significantly.And the liquid level test macro based on CCD just can without contacting with test solution
Accurately measure liquid level information, while response speed with higher and measurement accuracy.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of liquid level survey based on CCD without contacting fluid to be measured
Test system.
To achieve the above object, the present invention provides a kind of CCD liquid level test macros:
A kind of liquid level test macro based on CCD, it includes source of parallel light (1), ccd sensor (2), microcontroller (3) and upper
Position machine (4)；
Source of parallel light (1) can be with the light source of the uniform collimated light beam of emissive porwer for one group；Ccd sensor (2) is line array CCD biography
Sensor；Microcontroller (3) is for driving ccd sensor (2)；Host computer (4) is for showing liquid level information.
Source of parallel light (1) is parallel to each other with the ccd sensor (2), is located at tested liquid container two sides；
Ccd sensor (2) is connected with the microcontroller (3), and microcontroller (3) is connected with host computer (4).
Ccd sensor (2) is a kind of optical semiconductor device, optical image can be converted to charge signal.It acts on class
It takes pictures like camera, converts optical signals into charge signal, be converted into digital signal by outside acquisition and conversion circuit.When
When the parallel light velocity passes through test solution, beam intensity can be weakened, and have obvious intensity with by the beam intensity of no test solution
Difference, while the light-sensitive device on corresponding linear CCD sensor position has different voltages value, by the position for comparing light-sensitive device
Set the position that can obtain test solution plane.
Ccd sensor (2) uses timing control, and the present apparatus uses the driver of microcontroller (3) as CCD, according to
Device timing is driven, and the measured value of CCD is obtained.Measured value is transmitted to host computer (4) by microcontroller (3), host computer (4)
Measured value is shown and is recorded.
Detailed description of the invention
Fig. 1 is liquid level test macro part-structure simplified schematic diagram of the present invention.
Fig. 2 is liquid level test macro working principle diagram of the present invention.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing:
A kind of liquid level test macro based on CCD, including source of parallel light (1), ccd sensor (2), microcontroller (3) and upper
Machine (4)；
Source of parallel light (1) can be with the uniform collimated light beam of emissive porwer；Ccd sensor (2) is linear CCD sensor；Microcontroller
Device (3) is for driving ccd sensor (2)；Host computer (4) is for showing and recording liquid level information.
Ccd sensor (2) is connected with microcontroller (3), and microcontroller (3) is connected with host computer (4).
Source of parallel light (1) is parallel to each other with the ccd sensor (2), is located at tested liquid container two sides, passes CCD
Sensor (2) can just receive whole light beams of source of parallel light (1) sending, and in the case where no test solution, ccd sensor
(2) the everywhere intensity of illumination on is equal.
In the presence of having liquid, the liquid of container bottom weakens beam intensity, and then leads to its corresponding ccd sensor
(2) the light-sensitive element voltage on changes, and the position of fluid to be measured is obtained and then the position for comparing its light-sensitive device.
Because measuring system contains optical component, therefore periodic cleaning maintenance sensor surface is needed, prevent dust from covering, influenced
Measuring system performance.
Claims (4)
1. a kind of liquid level test macro based on CCD, it is characterised in that: including source of parallel light (1), ccd sensor (2), micro-control
Device (3) processed and host computer (4).
2. according to claim 1, source of parallel light (1) can be with the uniform collimated light beam of emissive porwer；The ccd sensor
It (2) is linear CCD sensor；The microcontroller (3) is for driving the ccd sensor (2)；The host computer (4) is used for
Display and record liquid level information.
3. according to claim 1, the source of parallel light (1) is parallel to each other with the ccd sensor (2), be located at by
Survey liquid container two sides.
4. ccd sensor (2) is connected with the microcontroller (3) according to claim 1, microcontroller (3) with it is described
Host computer (4) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810479018.2A CN110501054A (en) | 2018-05-18 | 2018-05-18 | Liquid level test macro based on CCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810479018.2A CN110501054A (en) | 2018-05-18 | 2018-05-18 | Liquid level test macro based on CCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110501054A true CN110501054A (en) | 2019-11-26 |
Family
ID=68584274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810479018.2A Pending CN110501054A (en) | 2018-05-18 | 2018-05-18 | Liquid level test macro based on CCD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110501054A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322929A (en) * | 2022-01-07 | 2022-04-12 | 浙江同禾传感技术有限公司 | Static leveling device and using method thereof |
-
2018
- 2018-05-18 CN CN201810479018.2A patent/CN110501054A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322929A (en) * | 2022-01-07 | 2022-04-12 | 浙江同禾传感技术有限公司 | Static leveling device and using method thereof |
| CN114322929B (en) * | 2022-01-07 | 2023-03-10 | 浙江同禾传感技术有限公司 | Static leveling device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191126 |