CN202974857U - Spectrophotometric detection device - Google Patents
Spectrophotometric detection device Download PDFInfo
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- CN202974857U CN202974857U CN 201220667690 CN201220667690U CN202974857U CN 202974857 U CN202974857 U CN 202974857U CN 201220667690 CN201220667690 CN 201220667690 CN 201220667690 U CN201220667690 U CN 201220667690U CN 202974857 U CN202974857 U CN 202974857U
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- light beam
- amplification circuit
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Abstract
The utility model provides a spectrophotometric detection device which comprises a light source, a detection tank, a sensitization device, a signal processing module and a processor, wherein the light source is used for transmitting a detection light beam to the detection tank; the detection tank is used for containing a solution to be detected and receiving the detection light beam so as to radiate the solution to be detected by using the detection light beam; the sensitization device is used for receiving the detection light beam which passes through the solution to be detected, converting the detection light beam into a detection photoelectric signal and transmitting the detection photoelectric signal to the signal processing module; the signal processing module is used for receiving the detection photoelectric signal, filtering out an interference signal of the detection photoelectric signal, amplifying the detection photoelectric signal after the interference signal is filtered, and transmitting the detection photoelectric signal to the processor; and the processor is used for receiving the detection photoelectric signal after the interference signal is filtered, and converting the detection photoelectric signal after the interference signal is filtered into a corresponding digital signal so as to obtain the absorbance of the solution to be detected according to the digital signal. According to the spectrophotometric detection device, by filtering the interference signal of the detection photoelectric signal, the spectrophotometric detection process can be carried out in natural light or other light sources.
Description
Technical field
The utility model relates to the spectrophotometric field, especially, relates to a kind of spectrophotomelric assay device.
Background technology
In analytical chemistry field spectrophotometric method commonly used, determinand is carried out qualitative and quantitative analysis at present.Spectrophotometric method is by measuring absorbance or the luminous intensity of measured matter light in certain wave strong point or certain wavelength coverage, this material being carried out the method for qualitative and quantitative analysis.In spectrophotometer, when different wave length is shone certain density sample solution continuously, just can obtain the corresponding absorption intensity of unusual wavelength.As take wavelength (λ) as horizontal ordinate, absorption intensity (A) is ordinate, just can draw the absorption spectrum curve of this material.
Existing spectrophotomelric assay method is mainly to realize with spectrophotometer.spectrophotometric detection principle: by light source tritium lamp or tungsten lamp send continuous radiation light through optical filtering and condenser to monochromator entrance slit place focal imaging, reflex to collimating mirror generation directional light through plane mirror again and be incident upon grating, focusing on one-tenth one continuous spectrum on exit slit through collimating mirror again after dispersion on grating, through light that exit slit penetrates after condenser optically focused respectively by the blank solution in sample chamber, standard solution or sample solution, the rear light that is partially absorbed shines on photoelectric tube through optical gate again, the light signal that is received by photoelectric tube is converted into electric signal again.
Existing testing tool carries out spectrophotometric method when testing, and must strictly there is no to complete test under the environment of natural light.This is because the natural light complicated component may affect sensor devices, thereby causes test error or inaccurate to occur.
The utility model content
The utility model purpose is to provide a kind of spectrophotomelric assay device, must be in the technical matters that does not have to carry out under the environment of natural light to solve existing spectrophotomelric assay.
For achieving the above object, according to an aspect of the present utility model, provide a kind of spectrophotomelric assay device, having comprised: light source is used for emission and detects light beam to detection cell; Detection cell is used for holding solution to be detected, receives to detect light beam, to pass through to detect light beam irradiates solution to be detected; Sensor devices is used for receiving the detection light beam by solution to be detected, will detect light beam and be converted to the detection photosignal, and send to signal processor; Signal processor is used for receiving and detects photosignal, and filtering detects the undesired signal of photosignal, the detection photosignal after the amplification filtering interference signals, and send to processor; Processor for the detection photosignal after the reception filtering interference signals, and is converted into corresponding digital signal with the detection photosignal after filtering interference signals, and obtains the absorbance of solution to be detected according to digital signal.
Further, signal processor comprises bandwidth-limited circuit and the operational amplification circuit that is electrically connected to bandwidth-limited circuit, wherein, bandwidth-limited circuit is used for the undesired signal that filtering detects photosignal, and operational amplification circuit is used for the detection photosignal after the amplification filtering interference signals.
Further, operational amplification circuit comprises one-level operational amplification circuit and the secondary operational amplification circuit that is electrically connected to the one-level operational amplification circuit, the one-level operational amplification circuit comprises can regulate the adjustable resistance of enlargement factor continuously, and adjustable resistance is connected to the input end of the chip of one-level operational amplification circuit.
Further, adjustable resistance is connected to the reverse input end of the chip of described one-level operational amplification circuit.
Further, the spectrophotomelric assay device also comprises the lens that are arranged between light source and detection cell, and lens are used for assembling the detection light beam.
Further, light source is luminescent device.
Further, sensor devices is photosensitive device.
Further, light source, detection cell and sensor devices are placed on same level.
The utlity model has following beneficial effect:
1, according to spectrophotomelric assay device of the present utility model, detect the undesired signal of photosignal by the signal processing module filtering, can carry out so that the spectrophotomelric assay process is arranged in the situation of natural light or other light sources;
2, according to spectrophotomelric assay device of the present utility model, can be continuously amplify the detection photosignal after filtering interference signals with regulating, strengthen stability and the antijamming capability of spectrophotomelric assay process.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the spectrophotomelric assay device of the utility model preferred embodiment; And
Fig. 2 is the schematic diagram of signal processor of the spectrophotomelric assay device of the utility model preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, preferred embodiment of the present utility model provides a kind of spectrophotomelric assay device, comprising: light source 10 is used for emission and detects light beam to detection cell 20; Detection cell 20 is used for holding solution to be detected, receives to detect light beam, to pass through to detect light beam irradiates solution to be detected; Sensor devices 30 is used for receiving the detection light beam by solution to be detected, will detect light beam and be converted to the detection photosignal, and send to signal processor 40; Signal processor 40 is used for receiving and detects photosignal, and filtering detects the undesired signal of photosignal, the detection photosignal after the amplification filtering interference signals, and send to processor 50; Processor 50 for the detection photosignal after the reception filtering interference signals, and is converted into corresponding digital signal with the detection photosignal after filtering interference signals, and obtains the absorbance of solution to be detected according to digital signal.According to spectrophotomelric assay device of the present utility model, detect the undesired signal of photosignal by the signal processing module filtering, can carry out so that the spectrophotomelric assay process is arranged in the situation of natural light or other light sources; Can be continuously amplify the detection photosignal after filtering interference signals with regulating, strengthen stability and the antijamming capability of spectrophotomelric assay process.
Preferably, the spectrophotomelric assay device also comprises the lens 60 that are arranged between light source 10 and detection cell 20, and light source 10 sends the detection light beam, detects light beam parallel injecting on detection cell 20 after lens 60 focus on.
The detection light beam that sensor devices 30 is used for receiving by solution to be detected is converted into the detection photosignal, and sends to signal processing module 40.Sensor devices 30 commonly used is photosensitive device.
Preferably, light source 10, detection cell 20 and sensor devices 30 are placed on same level, after making detection light beam that light source 10 sends shine directly into solution to be detected in detection cell 20, can directly be injected on sensor devices 30, to reduce reflection of light and refraction.
Please in conjunction with referring to Fig. 2, particularly, signal processing module 40 comprises bandwidth-limited circuit 41 and the operational amplification circuit 42 that is electrically connected to bandwidth-limited circuit 41; Bandwidth-limited circuit 41 is used for the undesired signal that filtering detects photosignal.The frequency f that bandwidth-limited circuit 41 allows to pass through is at 30*10
4MHZ ~ 140*10
4Between MHZ, the frequency f＜30*10 of the undesired signal of filtering
4MHZ or f＞140*10
4MHZ.The interference light frequency of natural light is at f＜30*10
4MHZ or f＞140*10
4Between MHZ, make the interference electric signal that bandwidth-limited circuit 41 can the filtering natural light, thereby reach the effect that anti-natural light disturbs, spectrophotomelric assay device of the present utility model can detect under the condition of natural light.Operational amplification circuit 42 is used for the detection photosignal after adjustable ground amplifies filtering interference signals.Operational amplification circuit 42 comprises one-level operational amplification circuit and the secondary operational amplification circuit that is electrically connected to the one-level operational amplification circuit, the one-level operational amplification circuit comprises the adjustable resistance 421 that can regulate enlargement factor, adjustable resistance 421 is connected to the input end of chip, to regulate the enlargement factor of operational amplification circuit 42.Preferably, adjustable resistance 421 is connected to the reverse input end of chip.Operational amplification circuit 42 adjustable grounds amplify the detection photosignal after filtering interference signals, have strengthened stability and the antijamming capability of spectrophotomelric assay process.Detection photosignal after signal processing module 40 amplifies operational amplification circuit 42 sends to processor 50.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
According to spectrophotomelric assay device of the present utility model, detect the undesired signal of photosignal by the signal processing module filtering, can carry out so that the spectrophotomelric assay process is arranged in the situation of natural light or other light sources, can be continuously amplify the detection photosignal after filtering interference signals with regulating, strengthen stability and the antijamming capability of spectrophotomelric assay process.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a spectrophotomelric assay device, is characterized in that, comprising:
Light source (10) is used for emission and detects light beam to detection cell (20);
Described detection cell (20) is used for holding solution to be detected, receives described detection light beam, with by the described solution to be detected of described detection light beam irradiates;
Sensor devices (30) is used for receiving the detection light beam by described solution to be detected, described detection light beam is converted to the detection photosignal, and sends to signal processor (40);
Described signal processor (40) is used for receiving described detection photosignal, the undesired signal of the described detection photosignal of filtering, and the described detection photosignal after the amplification filtering interference signals, and send to processor (50);
Described processor (50), for the described detection photosignal after the reception filtering interference signals, and the described detection photosignal after filtering interference signals is converted into corresponding digital signal, and obtain the absorbance of described solution to be detected according to described digital signal.
2. spectrophotomelric assay device according to claim 1, it is characterized in that, described signal processor (40) comprises bandwidth-limited circuit (41) and the operational amplification circuit (42) that is electrically connected to described bandwidth-limited circuit (41), wherein, described bandwidth-limited circuit (41) is used for the undesired signal of the described detection photosignal of filtering, and described operational amplification circuit (42) is used for the described detection photosignal after the amplification filtering interference signals.
3. spectrophotomelric assay device according to claim 2, it is characterized in that, described operational amplification circuit (42) comprises one-level operational amplification circuit and the secondary operational amplification circuit that is electrically connected to described one-level operational amplification circuit, described one-level operational amplification circuit comprises the adjustable resistance (421) that can regulate continuously enlargement factor, and described adjustable resistance (421) is connected to the input end of the chip of described one-level operational amplification circuit.
4. spectrophotomelric assay device according to claim 3, is characterized in that, described adjustable resistance (421) is connected to the reverse input end of the chip of described one-level operational amplification circuit.
5. spectrophotomelric assay device according to claim 1, it is characterized in that, described spectrophotomelric assay device also comprises the lens (60) that are arranged between described light source (10) and described detection cell (20), and described lens (60) are used for assembling described detection light beam.
6. spectrophotomelric assay device according to claim 1, is characterized in that, described light source (10) is luminescent device.
7. spectrophotomelric assay device according to claim 1, is characterized in that, described sensor devices (30) is photosensitive device.
8. spectrophotomelric assay device according to claim 1, is characterized in that, described light source (10), described detection cell (20) and described sensor devices (30) are placed on same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667690 CN202974857U (en) | 2012-12-06 | 2012-12-06 | Spectrophotometric detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667690 CN202974857U (en) | 2012-12-06 | 2012-12-06 | Spectrophotometric detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202974857U true CN202974857U (en) | 2013-06-05 |
Family
ID=48515916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220667690 Expired - Lifetime CN202974857U (en) | 2012-12-06 | 2012-12-06 | Spectrophotometric detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202974857U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801958A (en) * | 2018-08-01 | 2018-11-13 | 常州市武进区半导体照明应用技术研究院 | A kind of biochemical substances detecting instrument and its detection method based on optical means |
-
2012
- 2012-12-06 CN CN 201220667690 patent/CN202974857U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801958A (en) * | 2018-08-01 | 2018-11-13 | 常州市武进区半导体照明应用技术研究院 | A kind of biochemical substances detecting instrument and its detection method based on optical means |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |