CN215894374U - Deuterium lamp background correction atomic absorption spectrometer with energy automatic matching technology - Google Patents
Deuterium lamp background correction atomic absorption spectrometer with energy automatic matching technology Download PDFInfo
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- CN215894374U CN215894374U CN202121328076.9U CN202121328076U CN215894374U CN 215894374 U CN215894374 U CN 215894374U CN 202121328076 U CN202121328076 U CN 202121328076U CN 215894374 U CN215894374 U CN 215894374U
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Abstract
The utility model discloses a deuterium lamp background correction atomic absorption spectrometer with an energy automatic matching technology, which is structurally provided with a cathode lamp light source, a focusing lens I, a deuterium lamp, a focusing lens II, an energy proportional attenuator, a semi-transparent semi-reflecting mirror, an atomizer, a detector, a controller and a plane reflecting mirror, wherein when the energy of the deuterium lamp is higher than that of the cathode lamp light source, the controller can automatically select an attenuation proportion, the controller enables the energy proportional attenuator to rotate a certain fixed angle, namely a selected attenuation proportion position, the controller obtains a latest energy value, fine adjustment is carried out on the current of the deuterium lamp, the energy of the deuterium lamp light source is ensured to reach a balanced state, when the energy of the deuterium lamp is lower than that of the cathode lamp light source, the controller can also automatically adjust, the energy attenuator is ensured to be adjusted within the current allowable range of the deuterium lamp and the cathode lamp light source, and both the light sources work in an optimal state, the automation degree of the instrument is improved, the energy balance time is shortened, and the accuracy of the measuring result is ensured.
Description
Technical Field
The utility model relates to the field of optical instruments, in particular to a deuterium lamp background correction atomic absorption spectrometer with an automatic energy matching technology.
Background
An atomic absorption spectrometer is a spectrum analyzer widely applied in the field of inspection and detection, when a sample is analyzed, in order to obtain an accurate measurement result, a background correction technology is required, the background correction comprises several modes such as Zeeman, a deuterium lamp and self-absorption, and the like, the deuterium lamp background correction mode has the advantages of simple structure, low cost and the like, when the atomic absorption spectrometer is used, the background correction technology needs to be balanced with the radiation energy of a cathode lamp, a deuterium lamp (D2) is a continuous light source, the energy is usually higher than the energy of the cathode lamp, for the energy balance, one mode is to enhance the energy of the cathode lamp by increasing the lamp current, the service life of the cathode lamp is influenced by the overlarge lamp current, energy drift is also brought, and the self-absorption phenomenon is caused seriously, the other mode is to reduce the energy by reducing the deuterium lamp current, and the light-emitting electrode is unstable after the deuterium lamp current is lower than a certain threshold value, so that only a light blocking sheet can be manually used for blocking part of the energy of the cathode lamp, when the cathode lamp has strong energy, the light barrier needs to be manually removed, and the light barrier of the deuterium lamp only has a fixed attenuation ratio, so that the energy balance process of the instrument is slow, the optimal effect is difficult to achieve, the service lives of the deuterium lamp and the cathode lamp are influenced to different degrees, or the light emission is unstable.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a deuterium lamp background correction atomic absorption spectrometer with an energy automatic matching technology.
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a deuterium lamp background correction atomic absorption spectrometer with automatic matching technique of energy, its structure is equipped with cathode lamp light source, focusing lens one, deuterium lamp, focusing lens two, energy attenuator, half mirror, atomizer, detector, controller, plane reflector, its characterized in that:
the first focusing lens is located at one side end of the periphery of the cathode lamp light source, the second focusing lens is located below the deuterium lamp, the semi-transparent semi-reflecting mirror is located at one side of the first focusing lens and is in movable fit with the first focusing lens, the semi-transparent semi-reflecting mirror is located below the energy attenuator, and the energy attenuator is movably mounted below the second focusing lens.
Furthermore, the atomizer is arranged between the semi-transparent semi-reflective mirror and the plane reflective mirror, the detector is positioned above the plane reflective mirror, one side end of the controller is connected with and matched with the deuterium lamp, the other end of the controller is connected with the detector, the atomizer can focus and converge energy transmitted by the semi-transparent semi-reflective mirror, and the energy enters the detector for corresponding spectral line detection after being further subjected to energy beam splitting under the reflection action of the plane reflective mirror and then is transmitted to the controller.
Furthermore, the controller is respectively connected with and movably matched with a cathode lamp light source, a deuterium lamp and an energy attenuator, the cathode lamp light source and the deuterium lamp are matched and move through a focusing lens I, a focusing lens II and a semi-transparent semi-reflective mirror, the energy attenuator is arranged between the focusing lens II and the semi-transparent semi-reflective mirror, currents of the cathode lamp light source and the deuterium lamp are controlled by the controller, energy of the cathode lamp light source and energy of the deuterium lamp are respectively gathered under the assistance of the focusing lens I and the focusing lens II through the semi-transparent semi-reflective mirror in a transmission and reflection mode, and the energy attenuator is controlled by the controller to rotate for a fixed angle.
Has beneficial effectsFruit
Compared with the prior art, the utility model has the following beneficial effects:
the energy of the cathode lamp light source (transmission) and the deuterium lamp (reflection) passes through the semitransparent and semi-reflecting mirror, then passes through the atomizer, then passes through the plane reflecting mirror to enter the detector, and transmits the data to the controller after processing, so as to obtain respective energy signals, when the energy of the deuterium lamp is higher than that of the cathode lamp light source, the controller can automatically select the attenuation proportion to enable the energy of the attenuated deuterium lamp to be closest to that of the cathode lamp light source, then the controller outputs a motor control command to enable the energy attenuator to rotate a certain fixed angle, namely the selected attenuation proportion position, so that the controller obtains the latest energy value, finely adjusts the current of the deuterium lamp to ensure that the energy is the same as that of the cathode lamp light source, namely to reach a balanced state, when the energy of the deuterium lamp is lower than that of the cathode lamp light source, the controller can automatically adjust according to the energy difference to ensure that the current of the deuterium lamp and the cathode lamp light source is within the allowable range, the energy attenuator is adjusted to enable the two light sources to work in the optimal state, so that automatic control is realized, the automation degree of the instrument is improved, the energy balance time is shortened, the working efficiency is improved, and the accuracy of the measuring result is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a deuterium lamp background correction atomic absorption spectrometer with an energy auto-matching technique according to the present invention.
In the figure: a cathode lamp light source-1, a focusing lens I-2, a deuterium lamp-3, a focusing lens II-4, an energy attenuator-5, a half-transmitting and half-reflecting mirror-6, an atomizer-7, a detector-8, a controller-9 and a plane reflector-10.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Examples
As shown in fig. 1, the present invention provides a deuterium lamp background correction atomic absorption spectrometer with an energy auto-matching technology, which is structurally provided with a cathode lamp light source 1, a first focusing lens 2, a deuterium lamp 3, a second focusing lens 4, an energy attenuator 5, a half-mirror 6, an atomizer 7, a detector 8, a controller 9, and a plane mirror 10, wherein the first focusing lens 2 is located at one side position of the periphery of the cathode lamp light source 1, the second focusing lens 4 is located below the deuterium lamp 3, the half-mirror 6 is located at one side of the first focusing lens 2 and is movably matched with the first focusing lens, the half-mirror 6 is located below the energy attenuator 5, the energy attenuator 5 is movably installed below the second focusing lens 4, the atomizer 7 is arranged between the half-mirror 6 and the plane mirror 10, the detector 8 is located above the plane mirror 10, one side end of the controller 9 is connected and matched with the deuterium lamp 3, the other end of the controller 9 is connected with the detector 8, the atomizer 7 can focus and converge energy transmitted by the semi-transparent semi-reflecting mirror 6, the reflection action of the plane reflecting mirror 10 further assists energy in light splitting and then enters the detector 8 for corresponding spectral line detection, and then the energy is transmitted to the controller 9, the controller 9 is respectively connected and movably matched with the cathode lamp light source 1, the deuterium lamp 3 and the energy attenuator 5, the cathode lamp light source 1 and the deuterium lamp 3 are matched and movable through the focusing lens I2, the focusing lens II 4 and the semi-transparent semi-reflecting mirror 6, the energy attenuator 5 is arranged between the focusing lens II 4 and the semi-transparent semi-reflecting mirror 6, the currents of the cathode lamp light source 1 and the deuterium lamp 3 are controlled by the deuterium controller 9 to light and radiate light energy according to the set current, the cathode lamp light source 1, The energy of the deuterium lamp 3 is respectively gathered under the assistance of the focusing lens I2 and the focusing lens II 4 through the transmission and reflection action of the semi-transparent semi-reflecting mirror 6, two beams of energy are gathered on the same light path, the light splitting is convenient to enter a monochromator for later period, the energy attenuator 5 is controlled by a controller 9 to rotate for a fixed angle, the energy of the deuterium lamp is attenuated according to a set proportion, corresponding spectral lines separated by the monochromator based on measuring elements are detected by a detector 8, the spectral lines are transmitted to the controller 9 after data processing, as the cathode lamp light source 1 and the deuterium lamp 3 are alternately lightened, respective energy signals can be obtained, the controller outputs current control signals of the deuterium lamp 3 and the cathode lamp light source 1 and control signals of the energy attenuator 5, and simultaneously receives energy signals of the focusing lens II 4 and the cathode lamp light source 1, the corresponding relation between current and energy is solidified inside the controller, an optimal adjustment scheme can be given based on the energy difference of the cathode lamp light source 1 and the deuterium lamp 3.
The working principle of the present invention is explained as follows: the energy of the cathode lamp light source 1 is focused by the focusing lens I2, then passes through the half-transparent mirror 6 and is focused on the atomizer 7, the energy of the deuterium lamp 3 is focused by the focusing lens II 4, then reaches the half-transparent mirror 6 under the coordination of the energy attenuator 5, the energy is reflected and then is converged to the same light path with the cathode lamp light source 1, then passes through the atomizer 7 and is reflected by the plane reflector 10, then enters the monochromator for light splitting, then enters the detector 8, the data is processed and then is transmitted to the controller 9, so as to obtain respective energy signals, in the energy balancing process, if the energy of the deuterium lamp 3 is higher than that of the cathode lamp light source 1, the controller 9 performs prejudgment and adjustment by adopting a manner of reducing the current of the deuterium lamp 3 according to the difference of the two beams of energy and the corresponding relation between the internally solidified current and the energy, when the current is reduced to the vicinity of the threshold value and can not be matched, the controller 9 will preferentially start the energy attenuator 5, the controller 9 will automatically select the attenuation ratio to make the energy of the deuterium lamp 3 after attenuation most close to the energy of the cathode lamp light source 1, then the controller 9 will output the motor control command to make the energy attenuator 5 rotate a certain fixed angle, namely the selected attenuation ratio position, to make the controller 9 obtain the latest energy value, and fine-tune the current of the deuterium lamp 3 to ensure the same energy as that of the cathode lamp light source 1, that is, to reach the equilibrium state, when the energy of the deuterium lamp 3 is lower than that of the cathode lamp light source 1, the controller 9 will automatically adjust according to the energy difference to ensure that the energy attenuator 5 is preferentially adjusted to make both light sources work in the best state based on the light emitting characteristic of the deuterium lamp 3 within the current allowable range of the deuterium lamp 3 and the cathode lamp light source 1, thereby realizing the automatic control and improving the automation degree of the instrument, the energy balance time is reduced, the working efficiency is improved, the two light sources are ensured to work under the optimal condition, the service life of the lamp is prolonged, and the accuracy of the measuring result is ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (3)
1. The utility model provides a deuterium lamp background correction atomic absorption spectrometer with energy automatic matching technique, its structure is equipped with cathode lamp light source (1), focusing lens (2), deuterium lamp (3), focusing lens two (4), energy attenuator (5), half mirror (6), atomizer (7), detector (8), controller (9), plane reflector (10), its characterized in that:
focus lens one (2) are located cathode lamp light source (1) periphery side position, focus lens two (4) are located deuterium lamp (3) below, semi-transparent semi-reflecting mirror (6) are located focus lens one (2) one side and clearance fit, semi-transparent semi-reflecting mirror (6) are located energy attenuator (5) below, energy attenuator (5) movable mounting is in focus lens two (4) below.
2. The deuterium lamp background corrected atomic absorption spectrometer with energy auto-matching technology as claimed in claim 1, wherein: the atomizer (7) is arranged between the spacing positions of the semi-transparent and semi-reflective mirror (6) and the plane reflective mirror (10), the detector (8) is positioned above the plane reflective mirror (10), one side end of the controller (9) is connected with the deuterium lamp (3) and matched with the deuterium lamp, and the other end of the controller (9) is connected with the detector (8).
3. The deuterium lamp background corrected atomic absorption spectrometer with energy auto-matching technology as claimed in claim 1, wherein: the device comprises a controller (9), a cathode lamp light source (1), a deuterium lamp (3) and an energy attenuator (5), wherein the controller (9) is respectively connected with and movably matched with the cathode lamp light source (1) and the deuterium lamp (3), the cathode lamp light source (1) and the deuterium lamp (3) are matched and move through a focusing lens I (2), a focusing lens II (4) and a semi-transparent semi-reflective mirror (6), and the energy attenuator (5) is arranged between the focusing lens II (4) and the semi-transparent semi-reflective mirror (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121328076.9U CN215894374U (en) | 2021-06-15 | 2021-06-15 | Deuterium lamp background correction atomic absorption spectrometer with energy automatic matching technology |
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| CN202121328076.9U CN215894374U (en) | 2021-06-15 | 2021-06-15 | Deuterium lamp background correction atomic absorption spectrometer with energy automatic matching technology |
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| CN215894374U true CN215894374U (en) | 2022-02-22 |
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| CN202121328076.9U Active CN215894374U (en) | 2021-06-15 | 2021-06-15 | Deuterium lamp background correction atomic absorption spectrometer with energy automatic matching technology |
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- 2021-06-15 CN CN202121328076.9U patent/CN215894374U/en active Active
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