CN112666101A - Residual chlorine detector based on spectrophotometry - Google Patents
Residual chlorine detector based on spectrophotometry Download PDFInfo
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- CN112666101A CN112666101A CN202110105441.8A CN202110105441A CN112666101A CN 112666101 A CN112666101 A CN 112666101A CN 202110105441 A CN202110105441 A CN 202110105441A CN 112666101 A CN112666101 A CN 112666101A
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- Prior art keywords
- module
- shell
- residual chlorine
- groove
- light source
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 30
- 239000000460 chlorine Substances 0.000 title claims abstract description 30
- 238000002798 spectrophotometry method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000002835 absorbance Methods 0.000 description 3
- 239000000645 desinfectant Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Abstract
The invention relates to the technical field of residual chlorine detection, and provides a residual chlorine detector based on a spectrophotometry method, which comprises a shell, a power supply module, a system control module, a photoelectric sensor module, a test tube, a sampling module and a display module, wherein a groove is formed in the shell, the power supply module is arranged in the shell, the system control module is arranged in the shell and is connected with the power supply module, the photoelectric sensor module is arranged in the shell, the system control module controls the photoelectric sensor module to emit light rays into the groove and detect the light rays, the test tube is inserted in the groove and is cylindrical, two square grooves are symmetrically arranged on the cambered surface of the lower end of the test tube by using the central axis of the test tube, the bottoms of the two square grooves are parallel, the light rays parallelly penetrate through the two square grooves, the sampling module is arranged in the shell, the system control module controls the sampling module to collect detection data, the display module, used for displaying the detection result. The problem of great measurement result error is solved.
Description
Technical Field
The invention relates to a residual chlorine detection device, in particular to a residual chlorine detector based on a spectrophotometry.
Background
In daily life, people drink the disinfectant liquid by using the chlorine disinfectant, residual chlorine is a general name of free chlorine and combined chlorine remained in water after the chlorine disinfectant is contacted for a certain time, and the residual chlorine has the functions of ensuring continuous sterilization and preventing the water from being polluted again. However, if the residual chlorine content exceeds the standard, the odor generated by phenols and other organic matters in water can be increased, and organic chloride with the function of 'causing three things' can be generated. The determination of the content and the existing state of the residual chlorine in the water is very important for the disinfection of drinking water and the guarantee of the safety of water hygiene.
At present, in water quality detection, a chemical colorimetric method is complicated, but only qualitative analysis can be realized through visual observation. The detection of residual chlorine in water by spectrophotometry is a recently emerging photoelectric detection technology, and the concentration value of a solution is obtained by measuring the absorbance of the solution to a light source and calculating and analyzing the solution.
At present, although the bottle body of a test tube bottle used by a spectrophotometry-based residual chlorine detector on the market based on the principle of spectrophotometry is simple and easy to manufacture, the measurement result has great error due to the refraction of the bottle body to a light source.
Disclosure of Invention
The invention mainly aims to provide a residual chlorine detector based on a spectrophotometry method, which is used for solving the problem of larger error of a measurement result.
In order to solve the technical problems, the invention adopts the technical scheme that:
a residual chlorine detector based on spectrophotometry comprises:
the device comprises a shell, a shell and a clamping piece, wherein a groove is formed in the shell;
a power module disposed within the housing;
the system control module is arranged in the shell and is connected with the power supply module;
the photoelectric sensor module is arranged in the shell, and the system control module controls the photoelectric sensor module to emit light rays into the groove and detect the light rays;
the test tube is inserted into the groove and is cylindrical, two square grooves are symmetrically formed in the arc surface of the lower end of the test tube by using the central axis of the test tube, the bottoms of the two square grooves are parallel, and light rays parallelly penetrate through the two square grooves;
the sampling module is arranged in the shell, and the system control module controls the sampling module to collect detection data.
As a further technical solution, the method further comprises:
the display module is arranged on the shell and comprises an OLED display screen for displaying the detection result.
As a further technical solution, the system control module includes a main control chip and a processor, the main control chip is stm32f103c8, the processor is a Contex-M3 core processor, and the main control chip and the processor are used to connect and control the photosensor module, the sampling module and the display module.
As a further technical scheme, the photoelectric sensor module comprises a DC-DC module, a light source emitter and a sensor, an input end of the DC-DC module is connected with the power module, an output end of the DC-DC module is connected with the light source emitter, the light source emitter emits light rays into the groove, the light rays pass through the two square grooves of the test tube, and the light source emitter and the sensor are arranged oppositely to enable the sensor and the light source to be on the same straight line.
As a further technical scheme, the light source emitted by the light source emitter is a 515nm single light source.
As a further technical scheme, the recess includes draw-in groove and mounting groove, the draw-in groove is located the below of mounting groove and rather than the intercommunication, the diameter of draw-in groove is less than the diameter of mounting groove, the lower extreme of test tube is inserted and is established in the draw-in groove.
As a further technical scheme, two fixing blocks are symmetrically arranged on the side surface of the upper end of the clamping groove by taking the central shaft as a center, and the two fixing blocks are respectively clamped in the two square grooves.
As a further technical scheme, a silica gel ring is arranged at the upper port of the clamping groove.
As a further technical scheme, a shading cover is arranged at the upper end of the mounting groove, one end of the shading cover is rotatably arranged on the shell, and the other end of the shading cover is detachably arranged on the shell through a buckle.
As a further technical scheme, the upper end of the test tube is provided with a rubber cover through thread disassembly.
The invention has the beneficial effects that:
the invention has simple structure, adopts spectrophotometry, uses a single light source as a system acquisition light source to measure the absorbance of the solution to calculate the concentration of the solution, and uses the square groove at the bottom of the test tube to ensure more accurate measurement and reduce the system error.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic perspective view of a test tube according to the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic structural view of a fixing block according to the present invention;
FIG. 4 is a schematic block diagram of the circuit of the present invention;
FIG. 5 is a schematic view of a first display screen interface of the present invention;
FIG. 6 is a schematic view of a second display screen interface according to the present invention;
FIG. 7 is a schematic view of a third display screen interface according to the present invention.
Description of the reference numerals
1. The device comprises a shell, 2, a test tube, 3, a square groove, 4, a clamping groove, 5, a mounting groove, 6, a fixing block, 7, a silica gel ring, 8, a shading cover, 9, a rubber cover, 10 and an OLED display screen.
Detailed Description
The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1-7, the present invention provides a residual chlorine detector based on spectrophotometry, which mainly comprises a housing 1, a power module, a system control module, a photoelectric sensor module, a test tube 2, a sampling module and a display module.
The shell 1 is provided with a groove, the power supply module is arranged in the shell 1, the system control module is arranged in the shell 1 and connected with the power supply module, the system control module comprises a main control chip and a processor, the main control chip is stm32f103c8, the processor is a Contex-M3 core processor, the main control chip and the processor are used for being connected with and controlling the photoelectric sensor module, the sampling module and the display module, the photoelectric sensor module is arranged in the shell 1, the system control module controls the photoelectric sensor module to emit light rays into the groove and detect the light rays, the photoelectric sensor module comprises a DC-DC module, a light source emitter and a sensor, the input end of the DC-DC module is connected with the power supply module, the output end of the DC-DC module is connected with the light source emitter, the light source emitted by the light source emitter is a single 515nm light source, the light source emitter emits light rays into the, the light source emitter and the sensor are arranged oppositely, the sensor and the light source are arranged on the same straight line, the sampling module is arranged in the shell 1, the system control module controls the sampling module to collect detection data, the display module is arranged on the shell 1, and the display module comprises an OLED display screen 10 and is used for displaying a detection result collected by the sampling module.
In the use process of the embodiment, firstly, liquid to be detected is filled into the test tube 2, and the rubber cover 9 is buckled on the test tube 2 through threads, so that the liquid is prevented from being spilled; then the lower end of the test tube 2 is inserted into the clamping groove 4, so that a single light source can pass through the bottoms of the two square grooves 3 in parallel, and then the single light source is used as a system acquisition light source to measure the absorbance of the solution by adopting a spectrophotometry method to calculate the concentration of the solution, and the concentration is displayed on a display screen. The square groove 3 of 2 bottoms in test tube for the light source parallel passes test tube 2, avoids appearing the refraction phenomenon of skew, makes to measure more accurately, reduces system error. Casing 1 goes up the setting of draw-in groove 4, fix test tube 2, avoid empting, in addition, two fixed block 6 cards on the side of the 4 upper ends of draw-in groove are established on 3 upper portions of square groove of test tube 2, avoid test tube 2 to take place the lateral rotation, the parallel bottom surface that also keeps two square grooves 3 of test tube 2 simultaneously can be perpendicular with light source and sensor in order to avoid the error that thickness inequality or slope brought more, the setting of silica gel circle 7, also can fix test tube 2 and make it avoid the front and back to rock, in order to reduce the operating error. The installation of mounting groove 5 and shading lid 8 is favorable to avoiding the interference of external light source to the detection, reduces operation error. The buckle setting of shading lid 8 avoids the not hard up entering of light that leads to of lid in the test procedure, brings external influence factor for the sensor.
The circuit schematic block diagram of the embodiment is shown in fig. 4, a main control chip of the residual chlorine detector is stm32f103c8, and the main control chip and the Contex-M3 core processor are used together to connect hardware of each part and control, for example, the battery voltage is collected to display electric quantity, the light source emitter is controlled to collect the sensor, and the OLED timing sequence is controlled to realize screen display. The power module adopts a 5v rechargeable lithium battery to supply power to the whole system, adopts a TP4056 power management chip to manage the charging and discharging of the battery, and is additionally provided with a DW06D chip to protect the charging of the lithium battery. The light source emitter adopts a 515nm single light source, and uses an RT9300A/B four-channel constant current source chip to keep the light source at a stable current. The sampling module uses the 16-bit adc of the ads1110 to perform ad sampling, and adds a reference, and the acquired value passes through a multi-stage amplification feedback circuit to increase the detection sensitivity. The display module adopts OLED display, and the display screen can enable the instrument to be in standby for a long time without power loss, so that the service time is greatly prolonged. In addition, the key operation of the embodiment is more concise, and only three keys of start detection, continuation and shutdown are used without redundant operation, so that the user is very simple to operate, and the interfaces are shown in fig. 5, 6 and 7.
The foregoing description is only of the preferred embodiments of the present invention, and it should be understood that the described embodiments are only a few, and not all, of the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. A residual chlorine detector based on spectrophotometry is characterized by comprising:
the device comprises a shell, a shell and a clamping piece, wherein a groove is formed in the shell;
a power module disposed within the housing;
the system control module is arranged in the shell and is connected with the power supply module;
the photoelectric sensor module is arranged in the shell, and the system control module controls the photoelectric sensor module to emit light rays into the groove and detect the light rays;
the test tube is inserted into the groove and is cylindrical, two square grooves are symmetrically formed in the arc surface of the lower end of the test tube by using the central axis of the test tube, the bottoms of the two square grooves are parallel, and light rays parallelly penetrate through the two square grooves;
the sampling module is arranged in the shell, and the system control module controls the sampling module to collect detection data.
2. The spectrophotometric based residual chlorine detector according to claim 1, further comprising:
the display module is arranged on the shell and comprises an OLED display screen for displaying the detection result.
3. The spectrophotometry-based residual chlorine detector according to claim 2, wherein the system control module comprises a main control chip and a processor, the main control chip is stm32f103c8, the processor is a Contex-M3 core processor, and the main control chip and the processor are used for connecting and controlling the photoelectric sensor module, the sampling module and the display module.
4. The spectrophotometric residual chlorine detector according to claim 1, wherein the photoelectric sensor module comprises a DC-DC module, a light source emitter and a sensor, an input end of the DC-DC module is connected to the power supply module, an output end of the DC-DC module is connected to the light source emitter, the light source emitter emits light into the groove, the light passes through the two square grooves of the cuvette, and the light source emitter is disposed opposite to the sensor such that the sensor and the light source are aligned.
5. The spectrophotometric based residual chlorine detector of claim 4 wherein said light source emitter emits a single 515nm light source.
6. The spectrophotometric based residual chlorine detector according to claim 1, wherein the recess comprises a slot and a mounting groove, the slot is located below the mounting groove and is communicated with the mounting groove, the diameter of the slot is smaller than that of the mounting groove, and the lower end of the test tube is inserted into the slot.
7. The spectrophotometry-based residual chlorine detector as claimed in claim 6, wherein two fixing blocks are symmetrically arranged on the side surface of the upper end of the clamping groove by taking the central axis thereof as a center, and the two fixing blocks are respectively clamped in the two square grooves.
8. The spectrophotometry-based residual chlorine detector according to claim 6, wherein a silica gel ring is arranged at the upper port of the clamping groove.
9. The spectrophotometric residual chlorine detector as claimed in claim 6, wherein a light shielding cover is disposed at an upper end of the mounting groove, one end of the light shielding cover is rotatably disposed on the housing, and the other end of the light shielding cover is detachably disposed on the housing through a buckle.
10. The spectrophotometric based residual chlorine detector according to claim 1, wherein the upper end of said cuvette is provided with a rubber cap by screw-thread removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110105441.8A CN112666101A (en) | 2021-01-26 | 2021-01-26 | Residual chlorine detector based on spectrophotometry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110105441.8A CN112666101A (en) | 2021-01-26 | 2021-01-26 | Residual chlorine detector based on spectrophotometry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112666101A true CN112666101A (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110105441.8A Pending CN112666101A (en) | 2021-01-26 | 2021-01-26 | Residual chlorine detector based on spectrophotometry |
Country Status (1)
| Country | Link |
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| CN (1) | CN112666101A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201145668Y (en) * | 2008-01-25 | 2008-11-05 | 黄晓平 | Portable color comparator for measuring chlorine disinfectant in water |
| US20130314697A1 (en) * | 2010-12-08 | 2013-11-28 | Qiagen Gmbh | Fluid processing tube for optical analysis and method for analyzing a fluid |
| CN110231379A (en) * | 2019-06-12 | 2019-09-13 | 成都万众壹芯生物科技有限公司 | A kind of residual chlorine sensor and application thereof based on electrochemical principle |
-
2021
- 2021-01-26 CN CN202110105441.8A patent/CN112666101A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201145668Y (en) * | 2008-01-25 | 2008-11-05 | 黄晓平 | Portable color comparator for measuring chlorine disinfectant in water |
| US20130314697A1 (en) * | 2010-12-08 | 2013-11-28 | Qiagen Gmbh | Fluid processing tube for optical analysis and method for analyzing a fluid |
| CN110231379A (en) * | 2019-06-12 | 2019-09-13 | 成都万众壹芯生物科技有限公司 | A kind of residual chlorine sensor and application thereof based on electrochemical principle |
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