CN106092322A - A kind of temp measuring system based on color sensor - Google Patents
A kind of temp measuring system based on color sensor Download PDFInfo
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- CN106092322A CN106092322A CN201610414492.8A CN201610414492A CN106092322A CN 106092322 A CN106092322 A CN 106092322A CN 201610414492 A CN201610414492 A CN 201610414492A CN 106092322 A CN106092322 A CN 106092322A
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- 238000000034 method Methods 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000011282 treatment Methods 0.000 claims abstract description 8
- 238000004040 coloring Methods 0.000 claims abstract description 7
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims description 8
- 241000222065 Lycoperdon Species 0.000 claims description 6
- 241000768494 Polymorphum Species 0.000 claims description 6
- 239000012634 fragment Substances 0.000 claims description 6
- 238000010606 normalization Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Radiation Pyrometers (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention discloses a kind of temp measuring system based on color sensor, it is characterised in that: include color acquisition module, color treatments module and color display module；Described color acquisition module includes optical lens and color sensor；Described color treatments module includes signal processing circuit；Described color display module is LCD1602 LCD MODULE；Described signal processing circuit includes current/voltage converter amplifier circuit, A/D converter, single-chip microcomputer and RS232 level translator；The recognition methods of described color sensor includes that HSL color space calculates and AWB based on HSL color space adjusts.The temp measuring system that the present invention provides belongs to non-contacting temp measuring method, has good colouring information simultaneously and processes function, has temperature measurement accuracy more accurately.
Description
Technical field
The present invention relates to field of temperature measurement, a kind of temp measuring system based on color sensor.
Background technology
Temperature is for characterizing object cold-hot condition Important Parameters, is also the important thermal technology of high-temperature heat treatment simultaneously
Parameter.Temperature field detection in real time and accurately is prevention industrial accident, high temperature measurement, low-carbon environment-friendly, the important hands of the saving energy
Section.Traditional High Temperature Measurement Technique uses contact measurement method, the wherein thermocouple sensors that use mostly, but owing to measuring
The limitation of mode, thermocouple can only carry out point-to-point contact type measurement, and response speed is slow, it is impossible to meets at present
Industrial high temperature non-cpntact measurement demand.
Object can send visible ray in the condition of high temperature, it is seen that light is recorded by color sensor, fixed according to Planck
Rule, there is non-linear relation in the spectral component of object radiation and the temperature of object, and the spectral distribution of object is at visible-range
Inside show as color, can be using the color of high temp objects as the foundation measuring temperature.Utilize the C&T of high temp objects
Between the temp measuring system based on color sensor designed by relation be a kind of Non-contact high temperature measurement mode.
In present temp measuring system, there are some problems: (1) is due to extraneous color stimulus, the light on color sensor
The current signal that sensing device produces is fainter, so current/voltage conversion and amplification must be carried out, processes through amplifying circuit
After could by A/D conversion and single-chip microcomputer process and judge, color signal could be read by PC；(2) adopt due to color sensor
Collect to be low frequency signal, in signal acquisition process, due to the impact of extraneous peculiar signal, it is necessary to filter high frequency noise letter
Number；(3) color sensor is different to three kinds of Essential colour sensitivity, and its RGB output valve is unequal；(4) object color is by three primary colors
RGB is constituted, and the change of people's color soon is the comprehensive change of form and aspect, saturation, brightness, although form and aspect, saturation, brightness become
Change is the result of rgb value change, but is to look for color and is not to look for RGB, but HSL.
Summary of the invention
The goal of the invention of the present invention is: for the problem of above-mentioned existence, it is provided that a kind of thermometric based on color sensor
System, including the signal processing circuit between color sensor and single-chip microcomputer, solves sensor output Weak current and monolithic
Machine processes has the voltage of certain level, thus the problem that can not carry out being directly connected to；Include a kind of by RGB color simultaneously
It is converted into the method for HSL color space and a kind of based on HSL color space automatic white balance adjustment method.
The technical solution used in the present invention is as follows:
A kind of temp measuring system based on color sensor of the present invention, including color acquisition module, color treatments module and face
Color display module；Described color acquisition module includes optical lens and color sensor；Described color treatments module includes signal
Process circuit；Described color display module is LCD1602 LCD MODULE.
The temp measuring system based on color sensor of the present invention, described signal processing circuit includes that current/voltage conversion is amplified
Circuit, A/D converter, single-chip microcomputer and RS232 level translator；Described A/D converter uses TLC2543；On described single-chip microcomputer
It is additionally provided with LED screen, for the display of color；Described single-chip microcomputer is connected with PC by RS232 level translator.
The temp measuring system based on color sensor of the present invention, described current/voltage converter amplifier circuit includes current/voltage
Change-over circuit, zeroing circuit and amplifying circuit.
Due to extraneous color stimulus, the current signal that the light-sensitive device on color sensor produces is fainter, in detection
During, what color sensor collected is small current signal, and single-chip microcomputer can process has certain level
Voltage signal, for that purpose it is necessary to be amplified the current signal collected and voltage conversion, flows voltage converter amplifier circuit, can
To improve the operational precision of system, make system stable operation.
The temp measuring system based on color sensor of the present invention, described current-to-voltage converting circuit includes operational amplifier
ICL7650, resistance R1, R2, R3, R4, and electric capacity C1, C2；The reverse input end of described operational amplifier ICL7650 connects also
R1 and C1 of connection, reconnects R2 and R3 in parallel；The outfan connection of described operational amplifier ICL7650 is made up of R4 and C2
Low-pass filter circuit.
In above circuit, the low-pass filter circuit of 4 and C2 compositions, can drive away HF noise signal and copped wave spike noise
Interference, improve circuit stability；Solve to collect due to color sensor is low frequency signal, at signal acquisition process
In, due to the impact of extraneous peculiar signal, it is necessary to the problem filtering the noise signal of high frequency.
The temp measuring system based on color sensor of the present invention, described zeroing circuit includes high-precision low-drift device OP-
07, its reverse input end series connection R5, connect R6 and the parallel connection of diode D3, connect R7 and the parallel connection of diode D4, and forward inputs
R9 and C3 in parallel between end and outfan, positive input series connection R8.
In above circuit, diode can reduce the power-supply fluctuation impact on zero point with the zero point of stabilisation systems.
The temp measuring system based on color sensor of the present invention, described amplifying circuit includes operational amplifier TLC2274, its
Reverse input end connects R12 and R14, R12 in parallel and connects R10 and R11 in parallel；Positive input connect R15 in parallel and
R16。
In above circuit, TLC2274 has low noise and high input impedance, is suitable for amplification and the calculating of small-signal.
The temp measuring system based on color sensor of the present invention, described color sensor include three photodiodes and
MTCSiCT three primary colors sensor；Described photodiode is Si-PIN photodiode, described MTCSiCT three primary colors sensor
Bag is integrated by 19x3 Si-PIN photocell and the trichroism filter lens of RGB.
Si-PIN photodiode in above structure, does not has photoelectric fatigue effect, and the wave-length coverage of response is wider, by environment
Temperature impact is little, has good linear relationship between the photoelectric current and the luminous flux of incidence that produce when short circuiting work, it is possible to
Well realize the light conversion to photoelectric current, and long-term stable operation.
The temp measuring system based on color sensor of the present invention, the recognition methods of described TCS230 includes HSL color space
Calculating and AWB based on HSL color space adjusts, the method that described HSL color space calculates is: red by pixel
Colouring component r, green component g, blue component b normalization, find the maximum max in the middle of r, g, b and minima min；
The calculating of form and aspect h, works as max=min, h=0；Work as max=r, and g " b time,When
Max=r, and g ＜ b,Work as max=g,Work as max=b,(2) brightnessCalculating(3) calculating of saturation s, whenTime,
S=0；WhenTime, s=0.5 × (max+min)/l；WhenTime,
In above method, HSL color space is used to process data advantage: (1) will according to RGB output colouring information TCS230
RGB is converted into HSL, judges non-fundamental color according to H-number or judges that color changes；(2) need not, by special light sources, use general LED
?；(3) detection belongs to color and relatively detects category, not specially requires light source.
The temp measuring system based on color sensor of the present invention, described AWB based on HSL color space adjusts
Method be:
(1) HSL color space is calculated according to RGB color；
(2) set number of fragments, the brightness section of each section is set according to number of fragments, according to brightness l value by pixel classifications
To a certain group；
(3) setting is assumed to be the form and aspect h value maximum Hmax of Lycoperdon polymorphum Vitt, as h ＜ Hmax, it is believed that this pixel is Lycoperdon polymorphum Vitt；
(4) according to formulaCalculate red adjusted coefficient K r and blue adjusted coefficient K b；
(5) segmentation correction redness and blue component, revised red component R=Kr × r, r is that the redness before revising is divided
Amount, blue component B=Kb × b, b is the blue component before revising；
(6) Kr, Kb deviation value ρ terminating to calculate is set, when | Kr-1 " ρ and | Kb-1 " during ρ, terminates to calculate.
Blank level adjustment in above method, can make three primary colors in color sensor " white " equal, solves due to face
The problem that colour sensor is different to three kinds of Essential colour sensitivity；And the method for this blank level adjustment is that AWB adjusts；Tool
There is good color reducing power, low-light level color is had less color error.
The operation principle of present invention temp measuring system based on color sensor: the present invention gathers high temperature substrate by optical lens
Body radiation in visible ray, enter color sensor, by the control system of single-chip microcomputer, carry out HSL color space calculating and from
Dynamic blank level adjustment, is converted into current signal by colouring information, through current/voltage conversion and amplifying circuit, is converted into voltage letter
Number, carry out analog digital conversion is digital signal simultaneously, enters single-chip microcomputer and processes, and obtains the color gathered, and then by color and temperature
The relation of degree, calculates the temperature of object being measured.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: compared with prior art, this
Invention provides the signal processing circuit between color sensor and single-chip microcomputer, solves sensor output Weak current and list
Sheet machine processes has the voltage of certain level, thus the problem that can not carry out being directly connected to；Provide a kind of by RGB color simultaneously
Space is converted into the method for HSL color space with a kind of based on HSL color space automatic white balance adjustment method, beneficially thermometric
The process of colouring information in system, improves thermometric effect.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the structural representation of a kind of temp measuring system based on color sensor of the present invention.
Fig. 2 is signal processing circuit schematic diagram.
Fig. 3 is current-to-voltage converting circuit figure.
Fig. 4 is zeroing circuit figure.
Fig. 5 is amplification circuit diagram.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive
Feature and/or step beyond, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary), unless specifically stated otherwise,
By other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, each feature is a series of
An example in equivalence or similar characteristics.
Such as Fig. 1, a kind of temp measuring system based on color sensor of the present invention, including color acquisition module, color treatments mould
Block and color display module；Described color acquisition module includes optical lens and color sensor；Described color treatments module bag
Include signal processing circuit；Described color display module is LCD1602 LCD MODULE.
The temp measuring system based on color sensor of the present invention, described signal processing circuit includes that current/voltage conversion is amplified
Circuit, A/D converter, single-chip microcomputer and RS232 level translator；Described A/D converter uses TLC2543；On described single-chip microcomputer
It is additionally provided with LED screen, for the display of color；Described single-chip microcomputer is connected with PC by RS232 level translator.
The temp measuring system based on color sensor of the present invention, described current/voltage converter amplifier circuit includes current/voltage
Change-over circuit, zeroing circuit and amplifying circuit.
The temp measuring system based on color sensor of the present invention, described current-to-voltage converting circuit includes operational amplifier
ICL7650, resistance R1, R2, R3, R4, and electric capacity C1, C2；The reverse input end of described operational amplifier ICL7650 connects also
R1 and C1 of connection, reconnects R2 and R3 in parallel；The outfan connection of described operational amplifier ICL7650 is made up of R4 and C2
Low-pass filter circuit.
The temp measuring system based on color sensor of the present invention, described zeroing circuit includes high-precision low-drift device OP-
07, its reverse input end series connection R5, connect R6 and the parallel connection of diode D3, connect R7 and the parallel connection of diode D4, and forward inputs
R9 and C3 in parallel between end and outfan, positive input series connection R8.
The temp measuring system based on color sensor of the present invention, described amplifying circuit includes operational amplifier TLC2274, its
Reverse input end connects R12 and R14, R12 in parallel and connects R10 and R11 in parallel；Positive input connect R15 in parallel and
R16。
The temp measuring system based on color sensor of the present invention, described color sensor include three photodiodes and
MTCSiCT three primary colors sensor；Described photodiode is Si-PIN photodiode, described MTCSiCT three primary colors sensor
Bag is integrated by 19x3 Si-PIN photocell and the trichroism filter lens of RGB.
The temp measuring system based on color sensor of the present invention, the recognition methods of described TCS230 includes HSL color space
Calculating and AWB based on HSL color space adjusts, the method that described HSL color space calculates is: red by pixel
Colouring component r, green component g, blue component b normalization, find the maximum max in the middle of r, g, b and minima min；
The calculating of form and aspect h, works as max=min, h=0；Work as max=r, and g " b time,Work as max=r,
And g ＜ b,Work as max=g,Work as max=b,(2) brightnessCalculating(3) calculating of saturation s, whenTime,
S=0；WhenTime, s=0.5 × (max+min)/l；WhenTime,
The temp measuring system based on color sensor of the present invention, described AWB based on HSL color space adjusts
Method be:
(1) HSL color space is calculated according to RGB color；
(2) set number of fragments, the brightness section of each section is set according to number of fragments, according to brightness l value by pixel classifications
To a certain group；
(3) setting is assumed to be the form and aspect h value maximum Hmax of Lycoperdon polymorphum Vitt, as h ＜ Hmax, it is believed that this pixel is Lycoperdon polymorphum Vitt；
(4) according to formulaCalculate red adjusted coefficient K r and blue adjusted coefficient K b；
(5) segmentation correction redness and blue component, revised red component R=Kr × r, r is that the redness before revising is divided
Amount, blue component B=Kb × b, b is the blue component before revising；
(6) Kr, Kb deviation value ρ terminating to calculate is set, when | Kr-1 " ρ and | Kb-1 " during ρ, terminates to calculate.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any disclose in this manual
New feature or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.
Claims (9)
1. a temp measuring system based on color sensor, it is characterised in that: include color acquisition module, color treatments module and
Color display module；Described color acquisition module includes optical lens and color sensor；Described color treatments module includes letter
Number process circuit；Described color display module is LCD1602 LCD MODULE.
Temp measuring system based on color sensor the most according to claim 1, it is characterised in that: described signal processing circuit
Including current/voltage converter amplifier circuit, A/D converter, single-chip microcomputer and RS232 level translator；Described A/D converter uses
TLC2543；It is additionally provided with LED screen, for the display of color on described single-chip microcomputer；Described single-chip microcomputer passes through RS232 level conversion
Device is connected with PC.
Temp measuring system based on color sensor the most according to claim 2, it is characterised in that: described current/voltage is changed
Amplifying circuit includes current-to-voltage converting circuit, zeroing circuit and amplifying circuit.
Temp measuring system based on color sensor the most according to claim 3, it is characterised in that: described current/voltage is changed
Circuit includes operational amplifier ICL7650, resistance R1, R2, R3, R4, and electric capacity C1, C2；Described operational amplifier ICL7650
Reverse input end connect R1 and C1 in parallel, reconnect R2 and R3 in parallel；The outfan of described operational amplifier ICL7650
Connect the low-pass filter circuit being made up of R4 and C2.
Temp measuring system based on color sensor the most according to claim 3, it is characterised in that: described zeroing circuit includes
High-precision low-drift device OP-07, its reverse input end series connection R5, connect R6 and the parallel connection of diode D3, connect R7 and two poles
The parallel connection of pipe D4, R9 and C3 in parallel between positive input and outfan, positive input series connection R8.
Temp measuring system based on color sensor the most according to claim 3, it is characterised in that: described amplifying circuit includes
Operational amplifier TLC2274, its reverse input end connects R12 and R14, R12 in parallel and connects R10 and R11 in parallel；Forward inputs
End connects R15 and R16 in parallel.
Temp measuring system based on color sensor the most according to claim 1, it is characterised in that: described color sensor bag
Include three photodiodes and MTCSiCT three primary colors sensor；Described photodiode is Si-PIN photodiode, described
MTCSiCT three primary colors sensor bag is integrated by 19x3 Si-PIN photocell and the trichroism filter lens of RGB.
Temp measuring system based on color sensor the most according to claim 1 and 2, it is characterised in that: described color senses
The recognition methods of device includes that HSL color space calculates and AWB based on HSL color space adjusts, described HSL color
The method of SPATIAL CALCULATION is: by the red component r of pixel, green component g, blue component b normalization, find in the middle of r, g, b
Maximum max and minima min；
(1) calculating of form and aspect h, works as max=min, h=0；Work as max=r, and g " b time,Work as max=
R, and g ＜ b,Work as max=g,Work as max=b,
(2) brightnessCalculating
(3) calculating of saturation s, whenTime, s=0；WhenTime, s=0.5 × (max+min)/l；
WhenTime,
Temp measuring system based on color sensor the most according to claim 5, it is characterised in that: described based on HSL color
The method that the AWB in space adjusts is:
(1) HSL color space is calculated according to RGB color；
(2) set number of fragments, the brightness section of each section is set according to number of fragments, according to brightness l value by pixel classifications to certain
One group；
(3) setting is assumed to be the form and aspect h value maximum Hmax of Lycoperdon polymorphum Vitt, as h ＜ Hmax, it is believed that this pixel is Lycoperdon polymorphum Vitt；
(4) according to formulaCalculate red adjusted coefficient K r and blue adjusted coefficient K b；
(5) segmentation correction redness and blue component, revised red component R=Kr × r, r is the red component before revising, blue
Colouring component B=Kb × b, b is the blue component before revising；
(6) Kr, Kb deviation value ρ terminating to calculate is set, when | Kr-1 " ρ and | Kb-1 " during ρ, terminates to calculate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107105211A (en) * | 2017-03-22 | 2017-08-29 | 建荣半导体（深圳）有限公司 | A kind of white-balance correction method, device and electronic equipment |
| CN107607204A (en) * | 2017-09-05 | 2018-01-19 | 昆山博威泰克电子科技有限公司 | Color analysis device and method |
| CN112197864A (en) * | 2020-10-30 | 2021-01-08 | 东华大学 | Method for testing, analyzing and quantitatively classifying colors of carding wool |
-
2016
- 2016-06-14 CN CN201610414492.8A patent/CN106092322A/en active Pending
Non-Patent Citations (4)
| Title |
|---|
| 庞小兵: "在线颜色识别传感技术的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
| 莫思特 等: "基于HSL颜色空间的自动白平衡算法", 《四川大学学报（工程科学版）》 * |
| 赵光艺 等: "基于颜色实现温度测量的方法及实验研究", 《仪器仪表用户》 * |
| 赵光艺 等: "采用TCS230颜色传感器的测温方法及实验研究", 《佳木斯大学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107105211A (en) * | 2017-03-22 | 2017-08-29 | 建荣半导体（深圳）有限公司 | A kind of white-balance correction method, device and electronic equipment |
| CN107607204A (en) * | 2017-09-05 | 2018-01-19 | 昆山博威泰克电子科技有限公司 | Color analysis device and method |
| CN112197864A (en) * | 2020-10-30 | 2021-01-08 | 东华大学 | Method for testing, analyzing and quantitatively classifying colors of carding wool |
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