CN201749084U - Multichannel atomic flourescence spectrometer combined sampling system - Google Patents
Multichannel atomic flourescence spectrometer combined sampling system Download PDFInfo
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- CN201749084U CN201749084U CN2010201526774U CN201020152677U CN201749084U CN 201749084 U CN201749084 U CN 201749084U CN 2010201526774 U CN2010201526774 U CN 2010201526774U CN 201020152677 U CN201020152677 U CN 201020152677U CN 201749084 U CN201749084 U CN 201749084U
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Abstract
The utility model belongs to a testing instrument field, especially to a multichannel atomic flourescence spectrometer combined sampling system. The sampling system includes a photoelectric detection module, a signal amplification module, a signal collection module, a background signal collection module,a signal control module and a signal processing module. The technical effects of the multichannel atomic flourescence spectrometer combined sampling system effectively are enhancing low concentration sample measuring signal and improves accuracy and precision of low concentration measuring in a condition of less foundation hardware and control.
Description
Technical field
The utility model belongs to field of test instrument, relates in particular to a kind of hyperchannel atomic fluorescence spectrometer that is used for atomic fluorescence spectrometer and merges sampling system.
Background technology
At present, atomic fluorescence spectrometer is the spectral class analytical instrument of using always.According to the number of atomic fluorescence spectrometer passage, atomic fluorescence spectrometer can be divided into single channel atomic fluorescence spectrometer and hyperchannel atomic fluorescence spectrometer.The hyperchannel atomic fluorescence spectrometer disposes several passages, can analyze multiple element simultaneously, the excitation source of respective element is housed on several passages, in a test period, each excitation source that order is lighted produces the fluorescence signal of the pairing varying strength of each tested element, and the fluorescence signal of this sequence is detected and convert to electric signal by photoelectric detector.Mix electric signal from this group of photoelectric detector output and be separated into the signal of representing each tested element, varying strength.Finally, to data processing such as the collection of institute's input signal, conversions, obtain the concentration results of each tested element by signal processing unit simultaneously.
Excitation source tool in actual analysis work plays a very important role, its intensity directly influences the sensitivity of method of testing, the conventional using method of existing multi-channel spectral alanysis instrument is, at the same time during the contained multiple element of analytic sample, element of the corresponding mensuration of single passage, each interchannel is separate.Like this, the sensitivity of instrument detection device is subjected to the restriction of single source intensity, can cause the loss of composition to be measured in the sample, can't guarantee the test precision of instrument, thereby has influenced the reliability and the accuracy of experimental data.
Prior art increases instrument test sensitivity from two aspects, one for increasing the intensity of single source: the atomic fluorescence spectrometer light source is from initial electrodeless discharge lamp to hollow cathode lamp, develop into the high strength hollow cathode lamp of present stage domestic manufacturer employing at last, the intensity of light source is greatly improved.But along with the higher requirement that harmful poisonous element is detected to the detection limit proposition of instrument, the intensity of existing light source still is apparent not enough, and accuracy and precision are poor when causing testing small concentration sample or test small concentration sample.Another technology realizes the purpose that measurement sensitivity improves for employing provides a kind of hyperchannel merging method, as a kind of multipath merge spectrum chemical analysis method and instrument thereof, number of patent application 200510067965.3, shine sample simultaneously by the same light source that makes two or more passages in the multi-channel spectrometer based, be equivalent to these same light source are merged into a light source irradiation sample behind the intensity of light source superposition, test identity element jointly, obtain the concentration data of this element.This technology under the situation that does not increase single excitation source intensity, the shortcoming of accuracy and precision difference when effectively overcoming existing spectral class analytical technology and can not test small concentration sample or test small concentration sample.For existing measuring technology improves method the most advanced in the measurement sensitivity.It is more that but this technology implements the software and hardware condition, the particularly requirement of relevant sequential aspect restriction, and it is big to have the difficulty of realization, baroque shortcoming.
The utility model content
The utility model has been researched and developed a kind of hyperchannel atomic fluorescence spectrometer and has been merged sampling system in order to solve the technical matters that exists in the prior art.Realize to adopt less hardware and easier method, the technical matters of accuracy and precision difference when overcoming existing spectral class analytical technology and can not test the small concentration sample or test the small concentration sample.
Know-why of the present utility model is, when using the hyperchannel atomic fluorescence spectrometer, by making the same light source of two or more passages in the multi-channel spectrometer based, produce the test fluorescence signal of multichannel identical element, merge sample circuit by the hyperchannel atomic fluorescence spectrometer, effectively extract the fluorescence signal of each passage, realize merging by software or hardware and handle, to reach identity element under the prerequisite that does not increase single light source intensity, realize the effect of the enhancing of measuring-signal.
The utility model to achieve these goals, the technical scheme that is adopted is that described sampling system comprises the Photoelectric Detection module, signal amplification module, signal acquisition module, background signal acquisition module, signal controlling module and signal processing module;
Described Photoelectric Detection module receives the hyperchannel atomic fluorescence signal of input, and described Photoelectric Detection module inputs to described signal amplification module with output signal; The output terminal of described signal amplification module is connected with the background signal acquisition module with described signal acquisition module; Described signal acquisition module of described signal controlling module controls and background signal acquisition module, the signal controlling module is signal decomposition signal and background signal; The input end of described signal processing module is connected with the background signal acquisition module with described signal acquisition module, described signal processing module carries out analog to digital conversion to the signal and the background signal of input, and digital signal carried out data processing, after signal after will handling upload host computer.
Comprise photoelectric detector in the described Photoelectric Detection module, and described photoelectric detector is photomultiplier PMT.
In concrete application, a kind of hyperchannel atomic fluorescence spectrometer of the present invention merges sampling system, and described sampling system comprises the Photoelectric Detection module, the signal amplification module, signal acquisition module, background signal acquisition module, signal controlling module and signal processing module;
Comprise photoelectric detector in the described Photoelectric Detection module.Comprise amplifier in the described signal amplification module.Described Photoelectric Detection module receives hyperchannel atomic fluorescence signal and is converted into the electric signal that can sample and inputs to described signal amplification module and carry out amplification filtering etc.; The output terminal of described signal amplification module is connected with the background signal acquisition module with described signal acquisition module; Described signal controlling module is decomposed into signal and background signal to original signal, import described signal acquisition module and background signal acquisition module, the input end of described signal processing module is connected with the background signal acquisition module with described signal acquisition module, described signal processing module carries out analog to digital conversion to the signal and the background signal of input, and digital signal carried out data processing, after signal after will handling upload host computer.
Described hyperchannel atomic fluorescence spectrometer comprises 2 or 2 with upper channel.
The hyperchannel atomic fluorescence spectrometer that the utility model provides merges the sampling system beneficial technical effects, under underlying hardware and the less situation of control, effectively realize the enhancing of small concentration sample measurement signal, the problem of accuracy and precision difference when having improved the small concentration measurement.
Description of drawings
Fig. 1: the utility model hyperchannel atomic fluorescence spectrometer merges the sampling system module map;
Fig. 2: the utility model hyperchannel atomic fluorescence spectrometer merges the detection principle schematic of sampling system;
Fig. 3: the utility model hyperchannel atomic fluorescence spectrometer merges the embodiment circuit diagram of sampling system.
Above-mentioned each width of cloth accompanying drawing will be illustrated in conjunction with following embodiment.
Embodiment
In the functional-block diagram as Fig. 1 hyperchannel atomic fluorescence spectrometer merging sampling system embodiment is illustrated that the photoelectric detector of described reception hyperchannel atomic fluorescence signal is the photoelectric detector of routine, embodiment adopts normally used photomultiplier PMT.Described conventional amplifying circuit, embodiment adopt conventional amplifier OP-07.Described signal acquisition module and background signal acquisition module, embodiment adopt data sampling to keep general-purpose chip LF1/2/398 to constitute respectively.Described signal controlling module is signal decomposition signal and background signal according to the setting of sequential control parameter; In the concrete enforcement, realize by the one-chip machine port operation.
Described data handling system is made of single-chip microcomputer and conventional modulus conversion chip AD574, and the single-chip data computing unit with data-handling capacity is conventional data computation unit.The output terminal of described amplifying circuit connects the input end of signal acquisition module and background signal acquisition module respectively, the signal controlling module is by the sampling time sequence of the general-purpose chip LF1/2/398 in difference control signal collection and the background acquisition module, realization is decomposed into signal and background signal to original signal, signal acquisition module and background acquisition module output to signal processing module respectively, carry out data processing.
As Fig. 2, illustrate that the hyperchannel atomic fluorescence spectrometer merges the sampling principle of sample circuit embodiment.Be depicted as the four-way atomic fluorescence spectrometer, produce A, B, C, D four road fluorescence signals, wherein A, B, C adopt As element lamp of the same race, the D road adopts the Se element lamp, shown in Figure 21,2,3,4,5,6 for realizing that the hyperchannel atomic fluorescence spectrometer merges merge channels A, the B of sample circuit effect, the sampled point of C-channel, and promptly the hyperchannel that A, B, C are all test As element is implemented passage and merged sampling.Idiographic flow and disposal route are as follows, A, B, C, D four road fluorescence signals are after amplifying circuit OP-07 amplifier is sent out greatly, connect signal sampling hold circuit LF1/2/398 on the amplifier output stage by the Single-chip Controlling order of data acquisition processing circuit at 2,4,6 point samplings, background signal sampling hold circuit LF1/2/398 by the Single-chip Controlling order of data acquisition processing circuit at 1,3,5 point samplings.Same passage 1,2 sampled points obtain sampled value through data acquisition processing circuit AD574 and single-chip microcomputer, in like manner obtain 3,4,5, after the value of 6 sampled points, carry out following data processing: ABC channel sample value=(A road 2 sampling point value-A road 1 sampling point value)+(B road 4 sampling point value-B road 3 sampling point value)+(C road 6 sampling point value-C road 5 sampling point value), obtain after the ABC channel sample value sending host computer to by the single-chip microcomputer of data acquisition processing circuit, further handle the test data of passage that way is surveyed.Like this, just effectively extract the fluorescence signal of each passage, realize merging superposition by software or hardware and handle, to reach identity element under the prerequisite that does not increase single light source intensity, realize the effect of the enhancing of measuring-signal, improved the sensitivity of test single-element.
Technique scheme is a kind of embodiment of the present utility model, for those skilled in the art, on the basis that the utility model discloses application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned embodiment of the utility model, therefore previously described mode is preferably, and does not have restrictive meaning.
Claims (4)
1. a hyperchannel atomic fluorescence spectrometer merges sampling system, it is characterized in that described sampling system comprises the Photoelectric Detection module, signal amplification module, signal acquisition module, background signal acquisition module, signal controlling module and signal processing module;
Described Photoelectric Detection module receives the hyperchannel atomic fluorescence signal of input, and described Photoelectric Detection module inputs to described signal amplification module with output signal; The output terminal of described signal amplification module is connected with the background signal acquisition module with described signal acquisition module; Described signal acquisition module of described signal controlling module controls and background signal acquisition module, the signal controlling module is signal decomposition signal and background signal; The input end of described signal processing module is connected with the background signal acquisition module with described signal acquisition module, described signal processing module carries out analog to digital conversion to the signal and the background signal of input, and digital signal carried out data processing, after signal after will handling upload host computer.
2. merge sampling system according to the described a kind of hyperchannel atomic fluorescence spectrometer of claim 1, it is characterized in that, comprise photoelectric detector in the described Photoelectric Detection module, and described photoelectric detector is photomultiplier PMT.
3. merge sampling system according to claim 1 or 2 described a kind of hyperchannel atomic fluorescence spectrometer, it is characterized in that, comprise amplifier in the described signal amplification module.
4. merge sampling system according to the described a kind of hyperchannel atomic fluorescence spectrometer of claim 1, it is characterized in that, described hyperchannel atomic fluorescence spectrometer comprises 2 or 2 with upper channel.
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| CN2010201526774U CN201749084U (en) | 2010-04-08 | 2010-04-08 | Multichannel atomic flourescence spectrometer combined sampling system |
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| CN2010201526774U CN201749084U (en) | 2010-04-08 | 2010-04-08 | Multichannel atomic flourescence spectrometer combined sampling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479432A (en) * | 2017-07-11 | 2017-12-15 | 北京海光仪器有限公司 | Multielement is combined with survey and merges measuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479432A (en) * | 2017-07-11 | 2017-12-15 | 北京海光仪器有限公司 | Multielement is combined with survey and merges measuring system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING BOHUI INNOVATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING RUIGUANG INSTRUMENT CO., LTD. Effective date: 20141030 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100016 CHAOYANG, BEIJING TO: 102206 CHANGPING, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141030 Address after: 102206 No. 9 middle road, Changping District life science and Technology Park, Beijing Patentee after: Beijing Bohui Innovation Technology Co., Ltd. Address before: 100016, M5 building, No. 1 East Jiuxianqiao Road, Beijing, Chaoyang District Patentee before: Beijing Ruiguang Instrument Co., Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 102206 9 life Garden Road, Changping District, Beijing Patentee after: Beijing Bo Hui innovative biotechnology Limited by Share Ltd Address before: 102206 No. 9 middle road, life science and Technology Park, Changping District, Beijing Patentee before: Beijing Bohui Innovation Technology Co., Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
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| CX01 | Expiry of patent term |