CN207730664U - A kind of sample turbidity detection device - Google Patents
A kind of sample turbidity detection device Download PDFInfo
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- CN207730664U CN207730664U CN201820119933.6U CN201820119933U CN207730664U CN 207730664 U CN207730664 U CN 207730664U CN 201820119933 U CN201820119933 U CN 201820119933U CN 207730664 U CN207730664 U CN 207730664U
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Abstract
The utility model belongs to in-vitro diagnosis pattern detection technical field, it is big to solve existing sample liquid turbidity, picture background color is deep when microscope is taken pictures, the technical issues of being unfavorable for identifying information in picture, there is provided a kind of sample turbidity detection device, including floating cuvette, closure apparatus, light source detection device and than sample cavity；Floating cuvette is placed in than in sample cavity, than the transparent area that is respectively arranged on the left side and the right side of sample cavity, light source detection device includes light-emitting device and reception electro-optical device；Light-emitting device and reception electro-optical device are respectively arranged on the transparent area at left and right sides of than sample cavity, and floating cuvette is equipped with light transmission thickening part；In use, the light that light-emitting device is sent out, which passes sequentially through the side of floating cuvette, the light transmission thickening part on the floating cuvette other side, enters the optical receiving end for receiving electro-optical device.The utility model has the characteristics that Sample Dilution convenience, high sensitivity, is conducive to quickly and effectively identify information contained in picture.
Description
Technical field
The utility model belongs to in-vitro diagnosis pattern detection technical field, and in particular to a kind of sample turbidity detection device.
Background technology
In medical detection industry, fecal sample through liquid feeding dilute mixing after, due to the sample size of addition do not allow it is easily-controllable
System and sample present situation itself are different, and in the case where identical dilution is added, it is turbid to have some diluted sample solutions
Degree is very big.When the prodigious sample of turbidity is dripped to progress antigen-antibody reaction on reagent card, liquid is difficult flowing, can lead to sample
This detection fails.Too big additionally, due to sample liquid turbidity, when microscope is taken pictures, picture background color can be very deep, no
It is quickly and effectively identified conducive to being done to information included in picture, increases identification difficulty.
Utility model content
Utility model aims to solve at least one of the above the technical problems existing in the prior art, provide one
Kind sample turbidity detection device.
The purpose of this utility model is achieved through the following technical solutions：
A kind of sample turbidity detection device, including floating cuvette, closure apparatus, light source detection device and than sample cavity；
The floating cuvette is placed in than in sample cavity, the transparent area that is respectively arranged on the left side and the right side than sample cavity, the light source is examined
It includes light-emitting device and reception electro-optical device to survey device；The light-emitting device and reception electro-optical device are respectively arranged on than sample cavity or so two
On the transparent area of side, the floating cuvette is equipped with light transmission thickening part；In use, the light that light-emitting device is sent out passes sequentially through stream
Light transmission thickening part on the side of dynamic cuvette, the floating cuvette other side enters the optical receiving end for receiving electro-optical device.
Further, further include detecting system；The detecting system includes processor, diluent container and dilution plunger
Pump；The processor is connect with light-emitting device, reception electro-optical device, dilution plunger pump respectively；The diluent container outlet is logical
Dilution plunger pump is crossed to connect with test specimens outlet.
Further, the bottom than sample cavity is equipped with than sample bottom plate；It is described than sample bottom plate with it is more detachable than sample cavity
Connection.
Further, the closure apparatus includes than sample cover board and than sample silicagel pad；Test on the floating cuvette
Sample import and test specimens outlet are stretched out from the middle part than sample cover board and than sample silicagel pad；Than sample cover board by than sample silicagel pad with than
The upper end removable seal connection of sample cavity.
Further, the light-emitting device includes optical transmission circuit；The reception electro-optical device includes that light receives circuit；It is described
It includes the first negative-feedback circuit and operational amplifier ICL7650 that light, which receives circuit,；The inverting input of operational amplifier ICL7650
It is connect by the signal end of CJ2 terminals with the silicon photocell for receiving optical element is used as, the ground terminal ground connection of CJ2 terminals；Operation is put
The positive input end grounding of big device ICL7650, the inverting input of operational amplifier ICL7650 and the first negative-feedback circuit
Output end connects；The output end of operational amplifier ICL7650 is connect with the input terminal of the first negative-feedback circuit；Operational amplifier
The output end of ICL7650 is also connected with secondary amplification circuit；The positive power source terminal of the operational amplifier ICL7650 and light emitting electricity
Road connects；It is connected with infrared light-emitting diode on the optical transmission circuit.
Further, first negative-feedback circuit includes resistance R18, resistance R17 and capacitance C13；The resistance R18 and
R17 connections；The inverting input of the output end and operational amplifier ICL7650 of resistance R18, the input terminal of resistance R17 and operation
The output end of amplifier ICL7650 connects；One end of capacitance C13 is connect with the output end of resistance R18；The other end of capacitance C13
It is connect with the input terminal of resistance R17；The optical transmission circuit includes regulator circuit；The regulator circuit is connect with the ends VCC5V；Institute
The output voltage for stating regulator circuit is 1.2-1.3V；The regulator circuit is connect with infrared light-emitting diode.
Further, the secondary amplification circuit includes the first amplifying circuit；First amplifying circuit includes the first fortune
Calculate amplifier LM358DR2G, resistance R19, resistance R20, resistance R21 and potentiometer W2；First operational amplifier LM358DR2G
Normal phase input end be grounded by resistance R20；Described R19, R21 and potentiometer W2 constitute negative-feedback circuit；First operation amplifier
The inverting input of device LM358DR2G is connect by R19 with the output end of operational amplifier ICL7650；First operational amplifier
The inverting input of LM358DR2G passes sequentially through the output of potentiometer W2, resistance R21 and the first operational amplifier LM358DR2G
End connection；The secondary amplification circuit further includes the second amplifying circuit being connect with the first amplifying circuit；The second amplification electricity
Road includes second operational amplifier LM358DR2G, resistance R23, resistance R24 and resistance R25；The resistance R23, resistance R24 structures
At feedback circuit；The normal phase input end of second operational amplifier LM358DR2G is connect by resistance R25 with zero-regulator resistor；It is described
The output that the inverting input of second operational amplifier LM358DR2G passes through resistance R23 and the first operational amplifier LM358DR2G
End connection；The output end of the second operational amplifier LM358DR2G is connect by resistance R24 with the output end of resistance R23.
Further, the output end of the second operational amplifier LM358DR2G is also connected with levelling circuit；The levelling electricity
Road includes levelling potentiometer, resistance R7 and capacitance C20；The first end and the second operational amplifier of the levelling potentiometer
The output end of LM358DR2G connects；The second end ground connection of the levelling potentiometer, the adjustable side of the levelling potentiometer and resistance
One end of R7 connects；The other end of resistance R7 is connect by capacitance C20 with the second end of levelling potentiometer；The optical transmission circuit
Including resistance R10, balanced circuit chip TL431 and CJ5 terminal；One end of the resistance R10 is connect with the ends VCC5V；The electricity
The other end of resistance R10 is connected with the cathode of balanced circuit chip TL431；The plus earth of balanced circuit chip TL431；It is described steady
The reference pole of volt circuit chip TL431 is connected with the other end of resistance R10, the reference pole of the balanced circuit chip TL431 with
The voltage signal end of CJ5 terminals connects, and the voltage signal end of the CJ5 terminals connects infrared light-emitting diode, CJ5 terminals
Ground terminal is grounded.
The advantageous effect of the utility model compared with the existing technology is：A kind of sample turbidity detection device of the utility model
The turbidity of sample can be detected, secondary dilution can be done to sample according to the size of sample turbidity value, keeps the sample after dilution sharp
It takes pictures in microscope, the information for including conducive to picture quickly identifies；The sample turbidity detection device of the utility model works as turbidity value
When more than specified value, secondary dilution is carried out to the sample detected, amount of dilution is determined by other corresponding device auxiliary conversions,
Ensure that sample is prodigious in turbidity, sample ensure that microscope by smoothly completing drop card after detecting automatic dilution
The samples pictures information of bat is easy to identify.
Description of the drawings
Each modular construction schematic diagram of the sample turbidity detection device of Fig. 1 the utility model.
The overall structure diagram of the sample turbidity detection device of Fig. 2 the utility model.
The operation principle block diagram of the detecting system of Fig. 3 the utility model.
The light-emitting device of Fig. 4 the utility model and the circuit catenation principle figure for receiving electro-optical device.
The functional block diagram of the detecting system of Fig. 5 the utility model.
Wherein, corresponding reference numeral is in attached drawing, and 1- is surveyed than sample cover board, 2- than sample silicagel pad, 3- test specimens imports, 4-
Sample outlet, 5- floating cuvettes, 6- receive electro-optical device than sample cavity, 7- light transmissions thickening part, 8- light-emitting devices, 9-, and 10- compares sample
Bottom plate, 11- transparent areas.
Specific implementation mode
The technical solution of the utility model is described in detail with attached drawing with reference to embodiments, should be illustrated
It is only preferred embodiments of the present invention below to be, for those of ordinary skill in the art, is not departing from this reality
Under the premise of novel concept, various modifications and improvements can be made, these should belong to the guarantor of the utility model
Protect range.
Embodiment
As shown in Figs. 1-3, a kind of sample turbidity detection device, including floating cuvette, closure apparatus, light source detection dress
It sets and than sample cavity；The floating cuvette is placed in than in sample cavity, described to be respectively arranged on the left side and the right side light transmission than sample cavity
Area, the light source detection device include light-emitting device and reception electro-optical device；The light-emitting device and reception electro-optical device are respectively arranged on
Than on the transparent area 11 at left and right sides of sample cavity, the floating cuvette is equipped with light transmission thickening part；In use, light-emitting device is sent out
The light gone out passes sequentially through the side of floating cuvette, the light transmission thickening part 7 on the floating cuvette other side enters and receives electro-optical device
Optical receiving end.
Further, the closure apparatus includes than sample cover board 1 and than sample silicagel pad 2；Survey on the floating cuvette
Test sample inlet 3 and test specimens outlet 4 are stretched out from the middle part than sample cover board and than sample silicagel pad；Pass through than sample silicagel pad than sample cover board
It is connect with the upper end removable seal than sample cavity.
As shown in Figs. 1-5, a kind of sample turbidity detection device, including floating cuvette 5, test specimens are from test specimens import
It into floating cuvette, after carrying out turbidity value detection, and flows out, is determined according to turbidity value corresponding dilute from test specimens outlet
Multiple is released to be diluted test specimens.Further, a kind of sample turbidity detection device, further includes detecting system；The detection
System includes processor, diluent container and dilution plunger pump；The processor respectively with light-emitting device 8, receive electro-optical device
9, dilution plunger pump connects；The diluent container outlet is connected by dilution plunger pump and test specimens outlet.
Specifically, as shown in figure 5, detecting system includes processor, diluent container and dilution plunger pump, processor point
It is not connect with light-emitting device, reception electro-optical device, dilution plunger pump；Sample can be connect by sample container with sample plunger pump
The test specimens entrance of floating cuvette 5, can also be in other manners by sample by being pumped into floating cuvette, when having
When sample flows through cuvette, processor carries out turbidity value judgement according to the optical signalling received, if turbidity value is more than regulation
When value, starts the dilution that dilution plunger pump pumps out corresponding amount of dilution from diluent container, pass through the pump of follow-up process
Equal power-equipments by the dilution of amount of dilution with mixed in pipeline from the sample that floating cuvette test specimens export out after, into
Enter follow-up process processing, to which the sample for making turbidity value be more than specified value can meet subsequent other analyses after primary dilution
The needs of detection；If turbidity value is less than specified value, processor controls dilution plunger air pump inoperative, in floating cuvette
Sample is directly transported to follow-up process by power-equipments such as the pumps of follow-up process and carries out subsequent analysis detection, to realize
To the Intelligent treatment of sample.
Further, the bottom than sample cavity 6 is equipped with than sample bottom plate 10；It is described than sample bottom plate with it is more removable than sample cavity
Unload connection.
Further, the light-emitting device includes optical transmission circuit；The reception electro-optical device includes that light receives circuit；It is described
It includes the first negative-feedback circuit and operational amplifier ICL7650 that light, which receives circuit,；The inverting input of operational amplifier ICL7650
It is connect by the signal end of CJ2 terminals with the silicon photocell for receiving optical element is used as, the ground terminal ground connection of CJ2 terminals；Operation is put
The positive input end grounding of big device ICL7650, the inverting input of operational amplifier ICL7650 and the first negative-feedback circuit
Output end connects；The output end of operational amplifier ICL7650 is connect with the input terminal of the first negative-feedback circuit；Operational amplifier
The output end of ICL7650 is also connected with secondary amplification circuit；The positive power source terminal of the operational amplifier ICL7650 and light emitting electricity
Road connects；It is connected with infrared light-emitting diode on the optical transmission circuit.
As shown in Figure 4, a kind of sample turbidity detection device is found by long term test, halogen of the wavelength in 400-600nm
When plain tungsten lamp is as light source, measurement result is affected by sample coloration.Finally using the infraluminescence of 860nm or so two
Pole pipe is not influenced as light source by sample coloration substantially, and the voltage stabilization at transmitting tube both ends exists by R10, DW1 voltage-stabiliser tube
1.2-1.3V or so, infrared light-emitting diode can work normally for a long time.Receiving element using silicon photocell, silicon photocell
Characteristic is to will produce faint electric current when receiving illumination, this electric current is very faint, in pA ranks, so with routine
Amplifier or electric current turn potential circuit to detect so faint electric current, are flooded substantially by circuit noise.It is found by test
It is the copped wave that Intersil companies are made using dynamic zero resetting technology and CMOS technology that ICL7650, which has remarkable performance, ICL7650,
Steady zero formula high precision operating amplifier, it has, and input bias current is small, imbalance is small, high gain, common mode inhibition capacity is strong, responds
Soon, it drifts about the advantages that low, performance is stable and cheap.ICL7650 is in addition to having the characteristics that normal operation amplifier and application
Outside range, also have the characteristics that high-gain, high cmrr, imbalance is small and drift is low, so being frequently used in thermocouple, electricity
It hinders in the preamplifier that strain bridge, charge sensor etc. measure small-signal.ICL7650 is almost that current precision is highest
A amplifier, its offset voltage representative value at 25 DEG C is 0.7 μ V, thus ICL7650 can be used for handling amplification it is very micro-
Weak signal and can ensure high-precision as a result, being tied to test to make the utility model reduce sample particulate matter size
The influence of fruit, the test linearity improve.
Further, first negative-feedback circuit includes resistance R18, resistance R17 and capacitance C13；The resistance R18 and
R17 connections；The inverting input of the output end and operational amplifier ICL7650 of resistance R18, the input terminal of resistance R17 and operation
The output end of amplifier ICL7650 connects；One end of capacitance C13 is connect with the output end of resistance R18；The other end of capacitance C13
It is connect with the input terminal of resistance R17；The optical transmission circuit includes regulator circuit；The regulator circuit is connect with the ends VCC5V；Institute
The output voltage for stating regulator circuit is 1.2-1.3V；The regulator circuit is connect with infrared light-emitting diode.
Further, the secondary amplification circuit includes the first amplifying circuit；First amplifying circuit includes the first fortune
Calculate amplifier LM358DR2G, resistance R19, resistance R20, resistance R21 and potentiometer W2；First operational amplifier LM358DR2G
Normal phase input end be grounded by resistance R20；Described R19, R21 and potentiometer W2 constitute negative-feedback circuit；First operation amplifier
The inverting input of device LM358DR2G is connect by R19 with the output end of operational amplifier ICL7650；First operational amplifier
The inverting input of LM358DR2G passes sequentially through the output of potentiometer W2, resistance R21 and the first operational amplifier LM358DR2G
End connection；The secondary amplification circuit further includes the second amplifying circuit being connect with the first amplifying circuit；The second amplification electricity
Road includes second operational amplifier LM358DR2G, resistance R23, resistance R24 and resistance R25；The resistance R23, resistance R24 structures
At feedback circuit；The normal phase input end of second operational amplifier LM358DR2G is connect by resistance R25 with zero-regulator resistor；It is described
The output that the inverting input of second operational amplifier LM358DR2G passes through resistance R23 and the first operational amplifier LM358DR2G
End connection；The output end of the second operational amplifier LM358DR2G is connect by resistance R24 with the output end of resistance R23.
Further, the output end of the second operational amplifier LM358DR2G is also connected with levelling circuit；The levelling electricity
Road includes levelling potentiometer, resistance R7 and capacitance C20；The first end and the second operational amplifier of the levelling potentiometer
The output end of LM358DR2G connects；The second end ground connection of the levelling potentiometer, the adjustable side of the levelling potentiometer and resistance
One end of R7 connects；The other end of resistance R7 is connect by capacitance C20 with the second end of levelling potentiometer；The optical transmission circuit
Including resistance R10, balanced circuit chip TL431 and CJ5 terminal；One end of the resistance R10 is connect with the ends VCC5V；The electricity
The other end of resistance R10 is connected with the cathode of balanced circuit chip TL431；The plus earth of balanced circuit chip TL431；It is described steady
The reference pole of volt circuit chip TL431 is connected with the other end of resistance R10, the reference pole of the balanced circuit chip TL431 with
The voltage signal end of CJ5 terminals connects, and the voltage signal end of the CJ5 terminals connects infrared light-emitting diode, CJ5 terminals
Ground terminal is grounded.
As shown in figure 4, R23, R24 still constitute negative-feedback circuit, normal phase input end adjusts the electricity of the pin with potentiometer
Pressure aligns potentiometer and is used for returning to zero, calibration tester is used before testing for the effect of zeroing, is returned to zero with distilled water, is adjusted
Section levelling potentiometer, it is zero to make output voltage.The LM358DR2G of two amplifying circuits is twice after amplified signal, in resistance R7
Final voltage signal is exported with the junction of capacitance C20, which is acquired by the AD mouths of microcontroller, by a series of
Software filtering algorithm after, turbidity value is obtained, but the turbidity value may be inaccurate, so to need to demarcate.Calibration can
To use formal hydrazine solution, certain density formal hydrazine solution is prepared, is tested on turbidity tester, aligned by adjusting
Potentiometer makes turbidity value be approximately equal to known concentration.3-5 concentration of calibration is generally required, just turbidity tester can be made more acurrate.
The technical solution of the utility model can be preferably realized according to the record of this specification.
Claims (8)
1. a kind of sample turbidity detection device, which is characterized in that including floating cuvette, closure apparatus, light source detection device and
Than sample cavity；The floating cuvette is placed in than in sample cavity, the transparent area that is respectively arranged on the left side and the right side than sample cavity, institute
It includes light-emitting device and reception electro-optical device to state light source detection device；The light-emitting device and reception electro-optical device are respectively arranged on than sample chamber
On transparent area at left and right sides of body, the floating cuvette is equipped with light transmission thickening part；In use, the light that sends out of light-emitting device according to
Light transmission thickening part on secondary side by floating cuvette, the floating cuvette other side enters the light-receiving for receiving electro-optical device
End.
2. a kind of sample turbidity detection device according to claim 1, which is characterized in that further include detecting system；It is described
Detecting system includes processor, diluent container and dilution plunger pump；The processor is filled with light-emitting device, reception light respectively
It sets, the connection of dilution plunger pump；The diluent container outlet is connected by dilution plunger pump and test specimens outlet.
3. a kind of sample turbidity detection device according to claim 2, which is characterized in that the bottom than sample cavity is set
Have than sample bottom plate；It is described to be detachably connected with than sample cavity than sample bottom plate.
4. a kind of sample turbidity detection device according to claim 3, which is characterized in that the closure apparatus includes than sample
Cover board and than sample silicagel pad；Test specimens import and test specimens on the floating cuvette are exported from than sample cover board and than sample silica gel
The middle part of pad is stretched out；Than sample cover board by being connect with the upper end removable seal than sample cavity than sample silicagel pad.
5. a kind of sample turbidity detection device according to any one of claims 1-4, which is characterized in that the luminous dress
It sets including optical transmission circuit；The reception electro-optical device includes that light receives circuit；It includes the first negative-feedback electricity that the light, which receives circuit,
Road and operational amplifier ICL7650；The inverting input of operational amplifier ICL7650 is by the signal ends of CJ2 terminals and is used as
Receive the silicon photocell connection of optical element, the ground terminal ground connection of CJ2 terminals；The normal phase input end of operational amplifier ICL7650 connects
Ground, the inverting input of operational amplifier ICL7650 are connect with the output end of the first negative-feedback circuit；Operational amplifier
The output end of ICL7650 is connect with the input terminal of the first negative-feedback circuit；The output end of operational amplifier ICL7650 is also connected with secondary
Grade amplifying circuit；The positive power source terminal of the operational amplifier ICL7650 is connect with optical transmission circuit；Connect on the optical transmission circuit
There is infrared light-emitting diode.
6. a kind of sample turbidity detection device according to claim 5, which is characterized in that the first negative-feedback circuit packet
Include resistance R18, resistance R17 and capacitance C13；The resistance R18 is connected with R17；The output end and operational amplifier of resistance R18
The input terminal of the inverting input of ICL7650, resistance R17 is connect with the output end of operational amplifier ICL7650；Capacitance C13's
One end is connect with the output end of resistance R18；The other end of capacitance C13 is connect with the input terminal of resistance R17；The optical transmission circuit
Including regulator circuit；The regulator circuit is connect with the ends VCC5V；The output voltage of the regulator circuit is 1.2-1.3V；It is described
Regulator circuit is connect with infrared light-emitting diode.
7. a kind of sample turbidity detection device according to claim 6, which is characterized in that the secondary amplification circuit includes
First amplifying circuit；First amplifying circuit includes the first operational amplifier LM358DR2G, resistance R19, resistance R20, resistance
R21 and potentiometer W2；The normal phase input end of first operational amplifier LM358DR2G is grounded by resistance R20；Described R19, R21
Negative-feedback circuit is constituted with potentiometer W2；The inverting input of first operational amplifier LM358DR2G passes through R19 and operation amplifier
The output end of device ICL7650 connects；The inverting input of first operational amplifier LM358DR2G passes sequentially through potentiometer W2, electricity
Resistance R21 is connect with the output end of the first operational amplifier LM358DR2G；The secondary amplification circuit further includes and the first amplification is electric
Second amplifying circuit of road connection；Second amplifying circuit includes second operational amplifier LM358DR2G, resistance R23, resistance
R24 and resistance R25；The resistance R23, resistance R24 constitute feedback circuit；The positive of second operational amplifier LM358DR2G is defeated
Enter end to connect with zero-regulator resistor by resistance R25；The inverting input of the second operational amplifier LM358DR2G passes through resistance
R23 is connect with the output end of the first operational amplifier LM358DR2G；The output end of the second operational amplifier LM358DR2G
It is connect with the output end of resistance R23 by resistance R24.
8. a kind of sample turbidity detection device according to claim 7, which is characterized in that the second operational amplifier
The output end of LM358DR2G is also connected with levelling circuit；The levelling circuit includes levelling potentiometer, resistance R7 and capacitance C20；Institute
The first end for stating levelling potentiometer is connect with the output end of the second operational amplifier LM358DR2G；The levelling potentiometer
Second end ground connection, it is described levelling potentiometer adjustable side connect with one end of resistance R7；The other end of resistance R7 passes through capacitance
C20 is connect with the second end of levelling potentiometer；The optical transmission circuit includes resistance R10, balanced circuit chip TL431 and CJ5
Terminal；One end of the resistance R10 is connect with the ends VCC5V；The other end of the resistance R10 is with balanced circuit chip TL431's
Cathode is connected；The plus earth of balanced circuit chip TL431；The reference pole of the balanced circuit chip TL431 is with resistance R10's
The other end is connected, and the reference pole of the balanced circuit chip TL431 is connect with the voltage signal end of CJ5 terminals, the CJ5 terminals
Voltage signal end connect infrared light-emitting diode, CJ5 terminals ground terminal ground connection.
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|---|---|---|---|
| CN201820119933.6U CN207730664U (en) | 2018-01-24 | 2018-01-24 | A kind of sample turbidity detection device |
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| CN201820119933.6U CN207730664U (en) | 2018-01-24 | 2018-01-24 | A kind of sample turbidity detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007903A (en) * | 2018-01-24 | 2018-05-08 | 四川沃文特生物技术有限公司 | A kind of sample turbidity detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007903A (en) * | 2018-01-24 | 2018-05-08 | 四川沃文特生物技术有限公司 | A kind of sample turbidity detection device |
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