CN212989147U - Multi-light source detection module - Google Patents
Multi-light source detection module Download PDFInfo
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- CN212989147U CN212989147U CN202021884909.5U CN202021884909U CN212989147U CN 212989147 U CN212989147 U CN 212989147U CN 202021884909 U CN202021884909 U CN 202021884909U CN 212989147 U CN212989147 U CN 212989147U
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Abstract
The utility model provides a multi-light source detection module, which comprises a detection seat, wherein the detection seat is provided with a detection pool, and the detection pool is used for accommodating a sampling tube for taking a water sample; a plurality of side holes are uniformly formed in the side wall of the detection pool along the circumferential direction; a plurality of light source devices aligned with the detection cell are arranged outside the side wall of the detection cell, each light source device is correspondingly provided with a light detector, and each group of paired light source devices and light detectors are respectively arranged in the side holes and form a light path passing through the detection cell; through the arrangement of a plurality of light sources at different angles, light rays irradiate and pass through the inspection pool for accommodating the sampling tube, so that multi-wavelength pipeline inspection is realized without means of mechanical rotation and prism scattering, the structural stability and the test accuracy are greatly improved, and a portable water quality analyzer embedded with a multi-light source inspection module is further provided; so that a single instrument can measure multiple parameters; the structural design is ingenious, and errors caused by mechanical abrasion are prevented.
Description
Technical Field
The utility model relates to a portable water quality analyzer's detection module technical field especially relates to a many light sources detect module.
Background
In the water quality detection technology currently available in the market, only one light source and one optical detector are usually provided for one detection cell. The absorption of different substances in the sample to be detected to different wavelengths of light is different, so that the method for detecting the substances is to use the detection light which is most easily absorbed to travel a certain optical path in the detection pool, measure the intensity of the specific detection light passing through the detection pool from the other end, calculate the absorbance of the liquid to be detected in the detection pool, and compare the absorbance with a standard curve to obtain the corresponding concentration of the sample. Correspondingly, one detection cell is provided with one light source and one optical detector. However, in many cases, optical drives with different wavelengths are required to detect two or more parameters in water, which requires two or more instruments, thus greatly increasing the cost for installing the detection instruments. For example, the chemical oxygen demand COD is detected by light with the wavelength of 620nm under the condition of high concentration, and is detected by light with the wavelength of 440nm under the condition of low concentration. Obviously, the two methods of simultaneously measuring by a plurality of instruments and measuring by a plurality of measuring components by a single instrument have high cost and large reagent consumption, and are gradually eliminated by the market.
Meanwhile, as the requirement for portability of the detection analyzer is higher and higher, the emergence of portable water quality analyzers equipped with a plurality of light sources is promoted, but the multi-light source detection equipment on the market is characterized in that a plurality of light sources are fixed on one rotating wheel, and the plurality of light sources irradiate the same detection pool through rotation of the rotating wheel. However, the disadvantage is that the plurality of light sources are realized by controlling the motors through programs to further control the rotating wheel to rotate accurately, so that the rotating angle of the rotating wheel needs to be controlled accurately, the position of each light source needs to be remembered accurately, the software program is complex, the precision control of the rotating angle is inevitably reduced along with the use of mechanical wear, and the measurement error of the instrument is increased continuously. There is also a method of scattering light to multiple light sources using an axicon or a grating, but the above problem also exists.
Therefore, a multi-light source detection module with a more ingenious structure is needed.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems existing in the technology, such as: in the design of the existing multi-light-source portable water quality analyzer, scattering light splitting such as a rotating wheel and a prism is relied on, the mechanical structure has instability for light with high-precision wavelength, and the measurement error and the wave crest error brought by the mechanical structure are large. Therefore, a multi-light source detection module with multiple wavelength light sources and stable light source wavelength and a water quality analyzer with the detection module are designed.
The multi-light source detection module comprises a detection seat, wherein the detection seat is provided with a detection pool, and the detection pool is used for accommodating a sampling pipe for sampling a water sample; a plurality of side holes are uniformly formed in the side wall of the detection cell along the circumferential direction; the light source device is arranged on the outer portion of the side wall of the detection pool, a plurality of light source devices aligned with the detection pool are arranged on the outer portion of the side wall of the detection pool, each light source device is correspondingly provided with a photo detector, each group of paired light source devices and photo detectors are arranged in the side holes respectively, and light paths passing through the detection pool are formed.
Preferably, the detection seat comprises an upper shell and a lower shell, the upper shell and the lower shell are detachably connected, and the upper shell and the lower shell are correspondingly provided with through holes to form the detection pool.
Preferably, the connecting part of the upper shell and the lower shell is correspondingly provided with a groove, and the groove forms the side hole after the upper shell and the lower shell are buckled; the side hole is used for accommodating the light source or the optical detector.
Preferably, one end of the light source device, which is far away from the detection cell, is provided with a protruding portion, and the side hole is provided with a step which is clamped with the protruding portion.
Preferably, the detection cell is cylindrical; the lateral wall of the detection pool is uniformly provided with the side holes along the circumferential direction.
Preferably, the optical path formed by each paired light source device and photodetector is in the diameter direction of the detection cell.
Preferably, the light source devices emit light having wavelengths different from each other.
Preferably, the photodetector is provided with a filter corresponding to the light source device.
Preferably, an annular groove is further provided in the side hole, and the optical filter is fixed by being engaged in the annular groove.
The utility model has the advantages that: the utility model provides a multi-light source detection module, which comprises a detection seat, wherein the detection seat is provided with a detection pool, and the detection pool is used for accommodating a sampling tube for taking a water sample; a plurality of side holes are uniformly formed in the side wall of the detection pool along the circumferential direction; a plurality of light source devices aligned with the detection cell are arranged outside the side wall of the detection cell, each light source device is correspondingly provided with a light detector, and each group of paired light source devices and light detectors are respectively arranged in the side holes and form a light path passing through the detection cell; through the arrangement of a plurality of light sources at different angles, light rays irradiate and pass through the inspection pool containing the sampling tube, so that multi-wavelength pipeline detection is realized without means of mechanical rotation and prism scattering, the structural stability and the test accuracy are greatly improved, and a single instrument can carry out multi-parameter measurement; the structural design is ingenious, and errors caused by mechanical abrasion are prevented.
Drawings
FIG. 1 is a perspective view of the multi-light source detection module of the present invention;
FIG. 2 is an exploded view of the multi-light source module of the present invention;
FIG. 3 is a cross-sectional view of the multi-light source detection module of the present invention;
fig. 4 is a schematic view of a partial structure of the light source device and the side hole of the present invention;
fig. 5 is a schematic view of a partial structure of the optical filter and the side hole according to the present invention.
The main element symbols are as follows:
1. a detection seat; 11. a detection cell; 111. a side hole; 1111. a step; 1112. an annular groove; 112. a light source device; 1121. a boss portion; 113. a photo detector; 1131. an optical filter; 12. an upper shell; 121. a through hole; 13. A lower case; 131. a groove; 2. a sampling tube; 3. a housing.
Detailed Description
In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.
In the design of the existing water quality analyzer, the equipment for detecting water quality by using a spectrophotometry method is mostly adopted; however, if the white light source is directly used for testing, the triple prism is needed for scattering and splitting light; for an analyzer with the requirement of portability, because the mechanical structure of the prism is unstable, errors may be generated in the using process, and the measuring result is inaccurate; therefore, the light source is gradually developed into a plurality of single light sources with different wavelengths for detection; the common method is to switch the light sources by using a rotating wheel type mechanical structure, and the same problem is solved by using the rotation of the rotating wheel to realize that a plurality of light sources irradiate the same detection pool. The light sources are controlled by the motors through programs so as to control the rotating wheel to rotate accurately, so that the rotating angle of the rotating wheel needs to be controlled accurately, the position of each light source needs to be remembered accurately, the software program is complex, the precision control of the rotating angle is reduced inevitably along with the use of mechanical abrasion, and the measurement error of an instrument is increased continuously; therefore, a multi-light source module satisfying multi-light source irradiation analysis and having a stable structure is required.
Specifically, referring to fig. 1-2, the multi-light source detection module of a portable water quality analyzer includes a detection seat 1, the detection seat 1 is provided with a detection pool 11, and the detection pool 11 is used for accommodating a sampling tube 2 for sampling a water sample; a plurality of side holes 111 are uniformly formed in the side wall of the detection cell 11 along the circumferential direction; a plurality of light source devices 112 aligned with the detection cell are arranged outside the side wall of the detection cell 11, each light source device 112 is correspondingly provided with a photodetector 113, and each group of paired light source devices 112 and photodetectors 113 are respectively arranged in the side holes 111 and form a light path passing through the detection cell; a cuvette or a colorimetric tube for collecting a water sample is placed in the detection pool; light rays with different wavelengths are emitted by a light source device arranged in the through hole on the side wall, the light rays penetrate through the water sample, and the transmitted light rays are irradiated on a corresponding optical detector to form corresponding water quality detection parameters; if the light sources with different wavelengths are required to be switched for detection, only the corresponding light path is required to be opened, and the process has no mechanical abrasion, so that the error is controllable after long-term use; the side hole plays a role in fixing the light source device and the optical detector, so that the light path is stable; and the light barrier function is realized, and the influence of light interference on the test result is prevented.
Preferably, referring to fig. 2, the detection seat 1 includes an upper shell 12 and a lower shell 13, the upper shell 12 and the lower shell 13 are detachably connected, and the upper shell 12 and the lower shell 13 are correspondingly provided with through holes 121 to form the detection cell 11; as a more preferable scheme, grooves 122 are correspondingly formed at the connection portions of the upper case 12 and the lower case 13, and the grooves 131 form the side holes 111 when the upper case 12 and the lower case 13 are fastened; the side hole 111 is used for accommodating a light source or a light detector; because epitheca and inferior valve itself can be dismantled the connection, and the side opening passes through the epitheca and the semicircular groove of inferior valve forms, light source device also consequently conveniently changes and the debugging, all very convenience to later stage maintenance and illumination angle adjustment.
In this embodiment, one end of the light source device 112 away from the detection cell is provided with a protrusion 1121, and the side hole 111 is provided with a step 1111 engaged with the protrusion 1121; because the light source device is the LED lamp pearl of chooseing more, so for the structure is more stable, so be provided with the step at the end of side opening, conveniently fixed light source device.
In this embodiment, the detection cell 11 has a cylindrical shape; side holes 111 are uniformly formed in the side wall of the detection cell along the circumferential direction; set to circularly also can be unanimous in order to guarantee the optical distance of every group light path to make things convenient for block sampling pipe. In a more specific scheme, the optical path formed by each paired light source device and photodetector is in the diameter direction of the detection cell.
In the present embodiment, please refer to fig. 3-5, the wavelengths of the light emitted by the light source devices 112 are different from each other; if the side wall of the detection cell can be provided with 8 side holes, the four light source devices correspond to four photodetectors, and the wavelengths of the four light source devices can be five light sources respectively 420nm, 460nm, 540nm, 620nm and 700 nm; the 460nm and 620nm light source devices are RGB lamp beads and can emit light rays with two different wavelengths; and the corresponding light detector is provided with a light filter 1131 with corresponding wavelength in front, and the natural RGB lamp beads correspond to the light filter with double wave bands. An annular groove is further formed in the side hole, and the optical filter is fixed in the annular groove 1112 in a clamping mode.
The utility model has the advantages that:
1) the detection cell is irradiated by light sources with different wavelengths, so that the detection of multiple parameters can be realized without changing a reagent, and the detection of different parameters in different times can also be realized;
2) no complicated software control program and no power equipment are needed, so that no error caused by mechanical abrasion exists.
The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims (9)
1. The multi-light-source detection module is characterized by comprising a detection seat, wherein the detection seat is provided with a detection pool, and the detection pool is used for accommodating a sampling pipe for sampling a water sample; a plurality of side holes are uniformly formed in the side wall of the detection cell along the circumferential direction; the light source device is arranged on the outer portion of the side wall of the detection pool, a plurality of light source devices aligned with the detection pool are arranged on the outer portion of the side wall of the detection pool, each light source device is correspondingly provided with a photo detector, each group of paired light source devices and photo detectors are arranged in the side holes respectively, and light paths passing through the detection pool are formed.
2. The multi-light-source detection module according to claim 1, wherein the detection seat comprises an upper shell and a lower shell, the upper shell and the lower shell are detachably connected, and the upper shell and the lower shell are correspondingly provided with through holes to form the detection cells.
3. The multi-light-source detection module according to claim 2, wherein the connecting portion of the upper housing and the lower housing is correspondingly provided with a groove, and the groove forms the side hole after the upper housing and the lower housing are fastened; the side hole is used for accommodating the light source or the optical detector.
4. The multi-light-source detection module according to claim 2, wherein a protrusion is disposed at an end of the light source device away from the detection cell, and the side hole is provided with a step engaged with the protrusion.
5. The multi-light-source detection module of claim 1, wherein the detection cells are cylindrical; the lateral wall of the detection pool is uniformly provided with the side holes along the circumferential direction.
6. The module of claim 5, wherein the optical path formed by each paired light source device and photodetector is in the diameter direction of the detection cell.
7. The module of claim 1, wherein the light source devices emit light of different wavelengths.
8. The module of claim 7, wherein the photo detector is provided with a filter corresponding to the light source device.
9. The multiple light source module of claim 8, wherein an annular groove is further disposed in the side hole, and the optical filter is fixed in the annular groove by being clamped in the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021884909.5U CN212989147U (en) | 2020-09-01 | 2020-09-01 | Multi-light source detection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021884909.5U CN212989147U (en) | 2020-09-01 | 2020-09-01 | Multi-light source detection module |
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| Publication Number | Publication Date |
|---|---|
| CN212989147U true CN212989147U (en) | 2021-04-16 |
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| CN202021884909.5U Active CN212989147U (en) | 2020-09-01 | 2020-09-01 | Multi-light source detection module |
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| CN (1) | CN212989147U (en) |
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- 2020-09-01 CN CN202021884909.5U patent/CN212989147U/en active Active
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Effective date of registration: 20230504 Address after: 301, No.1 Plant, Xinguang Dianpingdi Industrial Plant, No. 82, Jiaoyu Road North, Gaoqiao community education, Pingdi Street, Longgang District, Shenzhen, Guangdong 518100 Patentee after: SHENZHEN ZHUNNUO TEST CO.,LTD. Address before: 518000 202, building a, No.6 huanping Road, Gaoqiao community, Pingdi street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN CHANGLONG TECHNOLOGY CO.,LTD. |