CN104181317A - Portable multi-functional biological test paper detector and portable multi-functional biological test paper detection system as well as realization method thereof - Google Patents
Portable multi-functional biological test paper detector and portable multi-functional biological test paper detection system as well as realization method thereof Download PDFInfo
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- CN104181317A CN104181317A CN201410440633.4A CN201410440633A CN104181317A CN 104181317 A CN104181317 A CN 104181317A CN 201410440633 A CN201410440633 A CN 201410440633A CN 104181317 A CN104181317 A CN 104181317A
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000003086 colorant Substances 0.000 claims abstract description 7
- 230000000638 stimulation Effects 0.000 claims abstract description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 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
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- 238000005516 engineering process Methods 0.000 description 1
- 238000013095 identification testing Methods 0.000 description 1
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- 238000005498 polishing Methods 0.000 description 1
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- 238000005211 surface analysis Methods 0.000 description 1
Abstract
The invention discloses a portable multi-functional biological test paper detector, solving the problems of poor anti-interference property, low detection precision and the like of the existing test paper detectors. The portable multi-functional biological test paper detector comprises a white light source, three filtering plates, three light intensity frequency conversion circuits and a microprocessor, wherein reaction test paper reflects light with different colors under the stimulation of the white light source after reacting with a tested objected; the three filtering plates are respectively a red light filtering plate, a green light filtering plate and a blue light filtering plate; the three light intensity frequency conversion circuits are in one-to-one correspondence to the red light filtering plate, the green light filtering plate and the blue light filtering plate; the microprocessor is connected with the three light intensity frequency conversion circuits and transmits data to intelligent equipment via a USB data line. On the basis of the structure, the invention also discloses a portable multi-functional biological test paper detection system and a realization method thereof.
Description
Technical field
The present invention relates to a kind of detection paper equipment, specifically, relate to the biological detection paper instrument of a kind of portable multi-function and biological detection paper system, implementation method.
Background technology
Utilize detection paper content of material, it is one on-the-spot instant analysis method easily, because it is easy to carry, test quick, simple to operate, cheap being widely used, its principle of work is: characteristic test paper and detected material produce rapidly obvious change color, be chemical reagent and the measured matter reaction solution on test paper, the colour developing depth is relevant with measured matter content, and by measuring the depth of test paper color, measured matter content is out determined.Existing portable detection paper equipment, the Test paper kind that its coupling is used is limited, and accuracy of detection is low.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, provide a kind of portable multi-function simple in structure, that cost is low, accuracy of detection is high biological detection paper instrument.
To achieve these goals, the technical solution used in the present invention is as follows:
The biological detection paper instrument of a kind of portable multi-function, is characterized in that, comprising:
A white light source, reaction test paper, after reacting with measured object, reflects the light of different colors under the stimulation of white light source;
Three filter plates, are respectively: ruddiness filter plate, green glow filter plate and blue light filter plate;
Three light intensity freq converting circuits, and three light intensity freq converting circuits are corresponding one by one with ruddiness filter plate, green glow filter plate and blue light filter plate;
Microprocessor, is connected with three light intensity freq converting circuits, meanwhile, can send data to smart machine by usb data line.
Specifically, described light intensity freq converting circuit comprises a photodiode, two comparers, a RS latch, four field effect transistor; Wherein, the output terminal of RS latch connects microprocessor, and photodiode is for receiving the monochromatic light forming after filter plate filtering.Light intensity freq converting circuit is existing ripe circuit, its role is to realize opto-electronic conversion, and and therefore not to repeat here.
Preferential, described ruddiness filter plate, green glow filter plate and blue light filter plate set gradually along the length direction of reaction test paper.
On the basis of said structure, the present invention also provides a kind of portable multi-function biological detection paper system, comprise reaction test paper, the biological detection paper instrument of a kind of portable multi-function, and be connected by the microprocessor in the biological detection paper instrument of usb data line and a kind of portable multi-function the smart mobile phone of realizing data interaction.
The implementation method of the biological detection paper system of portable multi-function, comprises the following steps:
(1) open white light source, white light is injected to ruddiness filter plate, produce fixed frequency square wave by light intensity freq converting circuit, microprocessor starts numeration function and the function that clocks simultaneously, adds up this light intensity freq converting circuit and produces 255 required time t1 of pulse;
(2) white light is injected respectively to green glow filter plate and blue light filter plate, the light intensity freq converting circuit that microprocessor records green glow filter plate is corresponding produces 255 required time t2 of pulse, and the light intensity freq converting circuit that blue light filter plate is corresponding produces 255 required time t3 of pulse;
(3) insert reaction test paper, reaction test paper, after reacting with measured object, reflects the light of different colors under the stimulation of white light source;
(4) light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record ruddiness filter plate during with t1;
(5) light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record green glow filter plate during with t2; Light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record blue light filter plate during with t3;
(6) microprocessor transfers to smart mobile phone by the data in step (4) and step (5) by usb data line, and smart mobile phone calculates the value of value, green glow G and the blue light B of ruddiness R in RGB according to the data that receive;
(7) table look-up and obtain reacting the color that test paper is corresponding by rgb value.
Said method has used white balance method, has eliminated light intensity freq converting circuit to three kinds of impacts that base light susceptibility is different, makes test result more accurate.
Compared with prior art, the present invention has following beneficial effect:
The present invention adopts white light source, make to react test paper and under the irradiation of white light source, reflect coloured visible ray, coloured visible ray enters respectively corresponding optical channel after three kinds of filter plate filtering of RGB, then turning to corresponding square-wave signal by light intensity conversion circuit wherein exports, the microprocessor of the last part by data processing is identified the frequency of square-wave signal, then by USB interface, data is passed to smart mobile phone; Smart mobile phone calculates the value of RGB again according to the data of receiving, thus the reaction result of identification test paper; The present invention can test look test paper to the overwhelming majority on the market and make accurate color identification, convert faint light signal to frequency signal, compared with turning electric equipment with traditional light, its precision is higher, anti-interference stronger, thereby make this portable set durable with stablizing, and on basis, having very high detection performance cheaply.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is light intensity freq converting circuit figure in the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of portable multi-function biological detection paper instrument, and it comprises a white light source, three filter plates, three and filter plate light intensity freq converting circuit, microprocessor one to one.Wherein, the preferential LED white light source of white light source, reaction test paper, after reacting with measured object, reflects the light of different colors under the stimulation of white light source.Filter plate is respectively: ruddiness filter plate, green glow filter plate and blue light filter plate, preferred, ruddiness filter plate, green glow filter plate and blue light filter plate set gradually along the length direction of reaction test paper.Reaction test paper reflects coloured visible ray under the irradiation of white light source, and coloured visible ray enters respectively corresponding optical channel after three kinds of filter plate filtering of RGB.
Light intensity freq converting circuit, effect is light signal to be converted to electric signal, and coloured visible ray enters respectively corresponding optical channel after three kinds of filter plate filtering of RGB, then turns to corresponding square-wave signal by light intensity conversion circuit wherein and exports.Light intensity freq converting circuit is existing ripe circuit, and as shown in Figure 2, in the present embodiment, light intensity freq converting circuit comprises a photodiode, two comparers, a RS latch, four field effect transistor; Wherein, the output terminal of RS latch connects microprocessor, and photodiode is for receiving the monochromatic light forming after filter plate filtering.Compared with turning electric equipment with traditional light, its precision is higher, anti-interference stronger.
Below in conjunction with accompanying drawing, the principle of work of light intensity freq converting circuit is described:
As shown in Figure 1, form monochromatic light and be irradiated on photodiode after (1) filtering, at this moment diode produces fixing electric current capacitor C 1 is charged; (2) capacitance voltage increases gradually, in the time that it is greater than the voltage of comparer A1 in-phase input end, and comparer A1 input low level; RS latch is exported high level to level latch time, closes P2 and N1 and opens P1 and N2 simultaneously, makes capacitor C 1 start electric discharge; (4) voltage of capacitor C 1 reduces gradually, when capacitor C 1 voltage is during lower than comparer A2 in-phase input end voltage, and comparer A2 output low level; (5) RS latch output zero setting, opens P2 and N1 when closing P1 and N2, and capacitor C 1 restarts charging, so just produces square wave at RS latch output terminal.The charging current of side's wave frequency and photodiode is inversely proportional to.
Three supply voltage V corresponding to substitutional resistance R0 are that the voltage that two comparer A1 and A2 positive are inputted is respectively
with
by the known electric capacity of upper surface analysis in charging from initial state
arrive
because photodiode output current is linear, just can show that the duration of charging of capacitor C 1 is again
Wherein i is diode charging voltage (its sizes values is directly proportional to light intensity), and C is the capacitance of capacitor C 1.
And in the time of capacitor charging, RS latch is output as high level, so t
chargingalso equal to export the time of high level.
When the voltage of electric capacity is charged to
time, this circuit discharges until lower voltage arrives to electric capacity
till.Be its discharge time
Wherein C is the capacitance of capacitor C 1.And in the time of capacitor discharge, RS latch is output as low level, so t
electric dischargealso equal the time of output low level.
Just the output side's wave frequency that can know in sum light intensity freq converting circuit is
Have foregoing known, the square wave frequency that light intensity freq converting circuit produces is directly proportional to the electric current of photodiode, and the size of electric current is directly proportional to light intensity, so the square wave frequency of circuit output is directly proportional to light intensity.The input current of photodiode is generally in μ A level, thus the square wave frequency that the size of electric capacity can select pF to produce to μ F be Hz to KHz, the very suitable use of such square wave frequency cheaply single-chip microcomputer is measured.
Microprocessor, is mainly used in the frequency of square-wave signal to identify, and it also has numeration function and the function that clocks.
Based on said structure, the present embodiment also discloses the biological detection paper system of a kind of portable multi-function, comprise reaction test paper, the biological detection paper instrument of a kind of portable multi-function, and be connected by the microprocessor in the biological detection paper instrument of usb data line and a kind of portable multi-function the smart mobile phone of realizing data interaction.
The course of work of the biological detection paper system of portable multi-function is as follows: (1) opens white light source, white light is injected to ruddiness filter plate, produce fixed frequency square wave by light intensity freq converting circuit, microprocessor starts numeration function and the function that clocks simultaneously, adds up this light intensity freq converting circuit and produces 255 required time t1 of pulse; (2) white light is injected respectively to green glow filter plate and blue light filter plate, the light intensity freq converting circuit that microprocessor records green glow filter plate is corresponding produces 255 required time t2 of pulse, and the light intensity freq converting circuit that blue light filter plate is corresponding produces 255 required time t3 of pulse; (3) insert reaction test paper, reaction test paper, after reacting with measured object, reflects the light of different colors under the stimulation of white light source; (4) light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record ruddiness filter plate during with t1; (5) light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record green glow filter plate during with t2; Light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record blue light filter plate during with t3; (6) microprocessor transfers to smart mobile phone by the data in step (4) and step (5) by usb data line, and smart mobile phone calculates the value of value, green glow G and the blue light B of ruddiness R in RGB according to the data that receive; (7) table look-up and obtain reacting the color that test paper is corresponding by rgb value.The method has been used white balance method, has eliminated light intensity freq converting circuit to three kinds of impacts that base light susceptibility is different, makes test result more accurate.
According to above-described embodiment, just can realize well the present invention.What deserves to be explained is; under prerequisite based on above-mentioned design concept; for solving same technical matters; even if some that make on architecture basics disclosed in this invention are without substantial change or polishing; the essence of the technical scheme adopting is still the same with the present invention, therefore it also should be in protection scope of the present invention.
Claims (5)
1. the biological detection paper instrument of portable multi-function, is characterized in that, comprising:
A white light source, reaction test paper, after reacting with measured object, reflects the light of different colors under the stimulation of white light source;
Three filter plates, are respectively: ruddiness filter plate, green glow filter plate and blue light filter plate;
Three light intensity freq converting circuits, and three light intensity freq converting circuits are corresponding one by one with ruddiness filter plate, green glow filter plate and blue light filter plate;
Microprocessor, is connected with three light intensity freq converting circuits, meanwhile, can send data to smart machine by usb data line.
2. the biological detection paper instrument of a kind of portable multi-function according to claim 1, is characterized in that, described light intensity freq converting circuit comprises a photodiode, two comparers, a RS latch, four field effect transistor; Wherein, the output terminal of RS latch connects microprocessor, and photodiode is for receiving the monochromatic light forming after filter plate filtering.
3. the biological detection paper instrument of a kind of portable multi-function according to claim 2, is characterized in that, described ruddiness filter plate, green glow filter plate and blue light filter plate set gradually along the length direction of reaction test paper.
4. the biological detection paper system of portable multi-function, it is characterized in that, comprise reaction test paper, the biological detection paper instrument of a kind of portable multi-function as described in claims 1 to 3 any one, and be connected by the microprocessor in the biological detection paper instrument of usb data line and a kind of portable multi-function the smart mobile phone of realizing data interaction.
5. the implementation method of the biological detection paper system of portable multi-function as claimed in claim 4, is characterized in that, comprises the following steps:
(1) open white light source, white light is injected to ruddiness filter plate, produce fixed frequency square wave by light intensity freq converting circuit, microprocessor starts numeration function and the function that clocks simultaneously, adds up this light intensity freq converting circuit and produces 255 required times of pulse
;
(2) white light is injected respectively to green glow filter plate and blue light filter plate, the light intensity freq converting circuit that microprocessor records green glow filter plate is corresponding produces 255 required times of pulse
, the light intensity freq converting circuit that blue light filter plate is corresponding produces 255 required times of pulse
;
(3) insert reaction test paper, reaction test paper, after reacting with measured object, reflects the light of different colors under the stimulation of white light source;
(4) use
time light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record ruddiness filter plate;
(5) use
time light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record green glow filter plate; With
time light intensity umber of pulse that freq converting circuit produces corresponding to interocclusal record blue light filter plate;
(6) microprocessor transfers to smart mobile phone by the data in step (4) and step (5) by usb data line, and smart mobile phone calculates the value of value, green glow G and the blue light B of ruddiness R in RGB according to the data that receive;
(7) table look-up and obtain reacting the color that test paper is corresponding by rgb value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410440633.4A CN104181317B (en) | 2014-09-01 | 2014-09-01 | The biological detection paper instrument of a kind of portable multi-function and biological detection paper system, implementation method |
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| CN201410440633.4A CN104181317B (en) | 2014-09-01 | 2014-09-01 | The biological detection paper instrument of a kind of portable multi-function and biological detection paper system, implementation method |
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Cited By (3)
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| CN108489977A (en) * | 2018-03-27 | 2018-09-04 | 张治国 | A kind of multi-functional medicine detection module and its detection method |
| CN109856133A (en) * | 2019-01-29 | 2019-06-07 | 深圳市象形字科技股份有限公司 | A kind of test paper detecting method illuminated using a variety of intensities of illumination, multicolour |
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