CN203894156U - Photoelectric colorimetric detection device - Google Patents
Photoelectric colorimetric detection device Download PDFInfo
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- CN203894156U CN203894156U CN201420309482.4U CN201420309482U CN203894156U CN 203894156 U CN203894156 U CN 203894156U CN 201420309482 U CN201420309482 U CN 201420309482U CN 203894156 U CN203894156 U CN 203894156U
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Abstract
The utility model discloses a photoelectric colorimetric detection device, comprising a light source, a colorimetric pool, a photoelectric detection unit and a display unit, wherein the photoelectric pool is used for containing a cuvette; a touch switch is arranged inside the colorimetric pool; the cuvette contacts the touch switch to generate an electric signal; the photoelectric colorimetric detection device judges the placement state of the cuvette by using the electric signal; and the display unit displays the placement state of the cuvette. After adopting the photoelectric colorimetric detection device and the corresponding detection method, a user can clearly and intuitively know the placement state of the cuvette in the colorimetric pool, the detection experiment is improved, and the detection efficiency and accuracy are improved.
Description
Technical field
The utility model relates to a kind of photoelectric colorimetry pick-up unit.
Background technology
Utilize the photo-electric conversion element such as photoelectric cell or photoelectric tube to make detecting device, measure by transmission light intensity after colored solutions, thereby the method for obtaining measured matter content is called photoelectric colorimetry.The instrument designing based on this is called photolometer.General photolometer is made up of six parts such as light source, optical filter, cuvette, photoelectric detector, amplification and demonstrations.
Although traditional photoelectric colorimetry pick-up unit can complete testing process, in man-machine interaction and ease for use, there is obvious deficiency, in the time having multiple colorimetric pool, operator cannot put into cuvette in which colorimetric pool of intuitive judgment.
In addition, traditional photoelectric colorimetry pick-up unit often unit detects, and lacks network communication function, can not upgrade flexibly control program, configuration detection process, output and distribution testing result.
Further, because light source heating, external environment condition variation etc. cause that the physicochemical property of checking matter change, traditional photoelectric colorimetry pick-up unit is considered the shortcoming of detected temperatures control, has affected the accuracy of testing result.
Summary of the invention
The purpose of this utility model is to provide a kind of photoelectric colorimetry pick-up unit, and by this device and detection method, user can know the laying state of knowing intuitively cuvette in colorimetric pool.
To achieve these goals, the utility model provides a kind of photoelectric colorimetry pick-up unit, comprises light source, colorimetric pool, photodetector unit and display unit; Described colorimetric pool is used for placing cuvette, in described colorimetric pool, be provided with touch switch, described cuvette is touched the electric signal that described touching switch produces, described photoelectric colorimetry pick-up unit utilizes described electric signal to judge the laying state of described cuvette, and described display unit shows described cuvette laying state.
Further, the laying state of described cuvette comprises insertion and taking-up, and the quantity of described colorimetric pool is more than 3.
Further, described touching switch is arranged at the top of described colorimetric pool.
Further, described touching switch is arranged at the bottom of described colorimetric pool.
Further, described device also comprises, optical filter, control module, temperature control unit, print unit, network communication unit and storage unit, and described control module control completes and detects and result demonstration output.
Further, described device also comprises, signal processing unit, control module, temperature control unit, print unit, network communication unit and storage unit, described photodetector unit is CCD inductor, described control module control completes and detects and result demonstration output.
Further, described touching switch is mechanical touch-switch or biplate conductive switch or conducting film pressure-sensitive switch.
Adopt after photoelectric colorimetry pick-up unit above, user can know the laying state of knowing intuitively cuvette in colorimetric pool, improves to detect and experiences, and improves the efficiency and the accuracy that detect.
Brief description of the drawings
Fig. 1 is for being the first photoelectric colorimetry pick-up unit of the present utility model;
Fig. 2 is the first scheme of the utility model cuvette detecting unit;
Current colorimetric pool state (cuvette does not insert) when Fig. 3 starts for detecting;
Fig. 4 is the colorimetric pool state (cuvette inserts) in detecting;
Fig. 5 is the first scheme of the utility model cuvette detecting unit;
Figure 6 shows that the second photoelectric colorimetry pick-up unit of the present utility model.
Embodiment
Figure 1 shows that the first photoelectric colorimetry pick-up unit of the present utility model, comprising: light source 1, monochromatic light generating means, be optical filter 2, colorimetric pool 3, photodetector unit 4 and display unit 6, the detecting unit 11 of composition completes and detects and result demonstration output under the control of control module 8 thus.The interior placement cuvette of colorimetric pool 3, has detected solution in cuvette.In addition, control module 8 is also controlled temperature control unit 7, print unit 10, network communication unit 5 and storage unit 9.The quantity of the colorimetric pool of photoelectric colorimetry pick-up unit is generally all more than 3, and the colorimetric pool quantity of the present embodiment is 5.Like this, user needs to understand the laying state of cuvette in colorimetric pool more
Light source 1: in photoelectric colorimetric assay, it is the key factor that obtains Accurate Determining result that the intensity of light source remains unchanged, and therefore, photoelectric colorimetry pick-up unit is with making the stable device of supply voltage (voltage stabilizer).Its effect is stabilized light source, makes it the impact that not changed by external voltage.
Optical filter 2: the effect of optical filter is only to allow the light transmission of certain wavelength coverage, and by all the other unwanted wavelength light eliminations.The monochromatic purity that optical filter sees through, represents by the half width of its spectral pattern conventionally.
Cuvette: cuvette is the sample liquid analyzed for splendid attire.In visible-range, conventional colouless optical glass or plastic production; And in ultraviolet region, need with the uv-transmitting material of energy, as quartz glass is made.
Photodetector unit 4: the normal photodetector unit using has photoelectric cell, photoelectric tube, photomultiplier etc. in testing instruments, is the device that utilizes photoelectric effect to be electric energy light energy conversion.
Light source 1 is irradiated to the monochromatic light of the rear generation specific wavelength of optical filter 2, monochromatic light is irradiated to photodetector unit 4 after seeing through colorimetric pool 3, light signal is become to electric signal output, through the analytical calculation of control module 8, can calculate absorbance or the absorbance changing value of detected solution, thereby calculate the concentration of certain food security composition in detected solution.Temperature control unit 7, for controlling the temperature of colorimetric pool 3, is avoided the impact of temperature fluctuation on testing result.Storage unit 9 is for storage control program, testing result and the database for comparing.Network communication unit 5 is for network communication.Print unit 10 is for detection of the printout of result.
In order to have put into cuvette in which colorimetric pool of handled easily person intuitive judgment, the utility model is provided with cuvette detecting unit in colorimetric pool 3, for detection of insertion and the taking-up of cuvette.
Fig. 2 is the first scheme of the utility model cuvette detecting unit.In colorimetric pool 3, insert after cuvette 16, the monochromatic light of specific wavelength penetrates through optical fiber 15, sees through after cuvette 16, and photodetector unit 4 detects the light that optical fiber 15 penetrates.
In order to detect the insertion process of cuvette 16, in the time that test starts, photoelectric colorimetry pick-up unit starts light source 1, optical filter 2, photodetector unit 4 and display unit 6, system log (SYSLOG) is the testing result of photodetector unit 4 now, display unit 6 shows current colorimetric pool state, as shown in Figure 3, in figure, 6 colorimetric pools all do not insert cuvette.
In the time having cuvette 16 to insert, now, photoelectric detection system 4 detects that light changes, and judges that cuvette inserts.According to the testing result to each colorimetric pool, display unit 6 shows current colorimetric pool state, and as shown in Figure 4, in figure, 6 colorimetric pools have inserted 3 cuvettes in all.
Equally, in the time that cuvette 16 takes out from colorimetric pool, photoelectric detection system 4 detects that light changes, and judges whether cuvette takes out.
In order better to utilize photoelectric detection system 4 to detect the insertion of cuvette 16, in the time that needs judge whether cuvette 16 has inserted or taken out, systematic unity sends the light of specific wavelength of known strength as with reference to light source, photoelectric detection system 4 more easily correctly judges the variation of light, output detections result.In this example, in the time that photoelectric colorimetry pick-up unit starts, now in colorimetric pool, do not insert cuvette, system is sent the white light of some strength, and now photoelectric detection system 4 is recorded the white light intensity now detecting as reference value A0.When inserting after cuvette, first system sends white light, and photoelectric detection system 4 detects that light intensity is A1, if | the value of A1-A0|/A0 exceedes the scope of setting, as 20%, judges that cuvette inserts.
The insertion of cuvette 16 and taking-up are dynamic processes, and the dynamic process that photoelectric detection system 4 can also change according to light, detects insertion or the taking-up of cuvette.As while inserting, the light change procedure that photoelectric detection system 4 detects is a process from top to bottom, can be judged as cuvette and inserts; In the time taking out, the light change procedure that photoelectric detection system 4 detects is a process from top to bottom, can be judged as cuvette and take out.
In order more accurately to judge insertion or the taking-up of cuvette, Fig. 5 is the first scheme of the utility model cuvette detecting unit.In colorimetric pool 3, insert after cuvette 16, the monochromatic light of specific wavelength penetrates through optical fiber 15, see through after cuvette 16, photodetector unit 4 detects the light that optical fiber 15 penetrates, meanwhile, cuvette 16 will touch the touching switch 20 that is arranged on colorimetric pool 3 bottoms, 20 conductings of touching switch, control module 8 detects after Continuity signal, judges that cuvette 16 has inserted.In each colorimetric pool, be equipped with touching switch, in each colorimetric pool, the insertion situation of cuvette just can clearly show like this.In the time that cuvette 16 takes out, touch switch 20 turn-offs, and control module 8 detects after cut-off signals, judges that cuvette 16 has taken out.
Touch switch has a variety of, as mechanical touch-switch, biplate conductive switch, conducting film pressure-sensitive switch, etc., may be used to the utility model.In addition, touching switch can be arranged at the top of colorimetric pool 3, the insertion of cuvette can be detected sooner.Certainly, also can be arranged at the bottom of colorimetric pool 3.The utility model is not construed as limiting.
Except disclosed two schemes above, cuvette detecting unit can also be other scheme, be also not construed as limiting here, and as long as detecting insertion or the taking-up of cuvette, all should be within protection domain of the present utility model.
Figure 6 shows that the second photoelectric colorimetry pick-up unit of the present utility model, comprising: light source 31, colorimetric pool 32, CCD(Charge-coupled Device, charge coupled cell, referred to as ccd sensor) inductor 33, signal processing unit 34, and display unit 35, the detecting unit 36 of composition completes and detects and result demonstration output under the control of control module 8 thus.The interior placement cuvette of colorimetric pool 32, has detected solution in cuvette.In addition, control module 8 is also controlled temperature control unit 7, print unit 10, network communication unit 5 and storage unit 9.
The multi-wavelength complex light that light source 31 sends shines directly into colorimetric pool 32, and projects on CCD inductor 33 after seeing through colorimetric pool.Gathered respectively R, G, the B signal of the output of colorama detector by signal processing 34 and control module 8, after analog to digital conversion and data processing, can obtain respectively the photoelectric conversion signal value of R, G, B corresponding wavelength, adopting special analysis software to carry out analyzing and processing to these R, G, B signal value, to calculate the absorbance (or absorbance changing value) of detected solution under a certain specific wavelength.
Cuvette detecting unit described in the first photoelectric colorimetry pick-up unit all can be suitable for the second photoelectric colorimetry pick-up unit above.
Finally it should be noted that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only; those of ordinary skill in the art can modify or be equal to replacement the present invention; and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in claim protection domain of the present invention.
Claims (7)
1. a photoelectric colorimetry pick-up unit, comprises light source, colorimetric pool, photodetector unit and display unit; Described colorimetric pool is used for placing cuvette, it is characterized in that, in described colorimetric pool, be provided with touch switch, described cuvette is touched the electric signal that described touching switch produces, described photoelectric colorimetry pick-up unit utilizes described electric signal to judge the laying state of described cuvette, and described display unit shows described cuvette laying state.
2. photoelectric colorimetry pick-up unit as claimed in claim 1, is characterized in that, the laying state of described cuvette comprises insertion and taking-up, and the quantity of described colorimetric pool is more than 3.
3. photoelectric colorimetry pick-up unit as claimed in claim 2, is characterized in that, described touching switch is arranged at the top of described colorimetric pool.
4. photoelectric colorimetry pick-up unit as claimed in claim 2, is characterized in that, described touching switch is arranged at the bottom of described colorimetric pool.
5. the photoelectric colorimetry pick-up unit as described in any one in claim 3 or 4, it is characterized in that, described device also comprises, optical filter, control module, temperature control unit, print unit, network communication unit and storage unit, described control module control completes and detects and result demonstration output.
6. the photoelectric colorimetry pick-up unit as described in any one in claim 3 or 4, it is characterized in that, described device also comprises, signal processing unit, control module, temperature control unit, print unit, network communication unit and storage unit, described photodetector unit is CCD inductor, and described control module control completes and detects and result demonstration output.
7. the photoelectric colorimetry pick-up unit as described in any one in claim 3 or 4, is characterized in that, described touching switch is mechanical touch-switch or biplate conductive switch or conducting film pressure-sensitive switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420309482.4U CN203894156U (en) | 2014-06-11 | 2014-06-11 | Photoelectric colorimetric detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420309482.4U CN203894156U (en) | 2014-06-11 | 2014-06-11 | Photoelectric colorimetric detection device |
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| CN203894156U true CN203894156U (en) | 2014-10-22 |
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| CN201420309482.4U Active CN203894156U (en) | 2014-06-11 | 2014-06-11 | Photoelectric colorimetric detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781676A (en) * | 2017-11-10 | 2019-05-21 | 陕西秦云农产品检验检测有限公司 | A kind of aflatoxin biodegrade testing tool and the method for breeding using it |
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2014
- 2014-06-11 CN CN201420309482.4U patent/CN203894156U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781676A (en) * | 2017-11-10 | 2019-05-21 | 陕西秦云农产品检验检测有限公司 | A kind of aflatoxin biodegrade testing tool and the method for breeding using it |
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