CN206177821U - Organic phosphorus pesticide residue photoelectric detection system - Google Patents
Organic phosphorus pesticide residue photoelectric detection system Download PDFInfo
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- CN206177821U CN206177821U CN201621179117.1U CN201621179117U CN206177821U CN 206177821 U CN206177821 U CN 206177821U CN 201621179117 U CN201621179117 U CN 201621179117U CN 206177821 U CN206177821 U CN 206177821U
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Abstract
The utility model discloses an organic phosphorus pesticide residue photoelectric detection system belongs to pesticide detection area. This photoelectric detection system includes: sealed container, photoelectric switching circuit, logarithmic amplification circuit, filter circuit, main amplifier circuit, AD converter, singlechip, display, input circuit and buzzer siren, wherein, inside luminescent substance (the luminol of having placed in advance of sealed container hydrogen peroxide the acetylcholinesterase chemiluminescence system) for place the solution that awaits measuring (pesticide combination), photoelectric switching circuit is including PN junction silicon photodiode, and PN junction silicon photodiode is located inside the sealed container. The utility model discloses combine together chemiluminescence method and photoelectric detection technique, can effectively compensate loaded down with trivial details, the consuming time complicacy of pretreatment of samples process that traditional detection method exists and consume reagent etc. Not enough, realized pesticide residue's quick real -time high accuracy testing, light sources's circuit design has been saved for manufacturing cost is lower, and production efficiency is higher.
Description
Technical field
This utility model is related to field of pesticide detection, more particularly to a kind of organophosphorus pesticide photodetector system.
Background technology
Agricultural Industrialization Development causes the production process of agricultural product to become increasingly dependent on the allogenic materials such as pesticide and antibiotic.Agriculture
Consumption of the medicine in agricultural product production remains high always in China, and the unreasonable use of pesticide or abuse cause the agriculture of agricultural product
Medicine residual content is exceeded in various degree, threatens the edible safety of consumer, even directly results in when serious and is poisoned to death.
Organophosphorus pesticide is widest insecticide used in current agricultural production, belongs to organophosphorus ester compound.Its
Species is various, such as metrifonate, thimet and dichlorvos.Existing pesticide residue detection method mainly has bioassary methods, physics and chemistry
Detection method and the class of fast detection method three.Wherein, In vivo detection method is higher to biological requirement, and testing result is difficult to determine concrete agriculture
Medicine kind；Physico-chemical tests method accuracy of detection is high, but time-consuming and operating process is loaded down with trivial details to there is detection, it is difficult to meet real-time detection need
Ask；At present development is very fast for Rapid examination method, but there is also testing cost height and the low defect of detection sensitivity.Therefore, one is explored
Simply effectively, fast and accurately pesticide residues quantitative detection system is of crucial importance to solving Pesticide Residue for kind.
Utility model content
To solve the relevant issues that prior art is present, this utility model provides a kind of organophosphorus pesticide light electric-examination
Examining system.
According to the one side of this utility model embodiment, there is provided a kind of organophosphorus pesticide photodetector system, bag
Include sealing container（1）, photoelectric switching circuit（2）, logarithmic amplifying circuit（3）, filter circuit（4）, main amplifying circuit（5）, A/D turn
Parallel operation（6）, single-chip microcomputer（7）And display（8）；
Wherein, the sealing container（1）Inside has been pre-placed luminescent substance, described luminous for placing solution to be measured
Material is luminol-hydrogen peroxide-acetylcholinesterase chemical luminous system, and the solution to be measured is pesticide combination；
The photoelectric switching circuit（2）In include PN junction silicon photoelectric diode D1, and the PN junction silicon photoelectric diode
It is internal that D1 is located at the sealing container (1)；
The outfan of the photoelectric switching circuit (2) is electrically connected with the input of the logarithmic amplifying circuit (3), described right
The outfan of number amplifying circuit (3) is electrically connected with the input of the filter circuit (4), the outfan of the filter circuit (4)
Electrically connect with the input of the main amplifying circuit (5), outfan and the A/D converter (6) of the main amplifying circuit (5)
Input electrical connection, the outfan of the A/D converter (6) electrically connects with the input of the single-chip microcomputer (7), the monolithic
The outfan of machine (7) is electrically connected with the input of the display (8), and by organophosphors agriculture in the solution described to be measured for detecting
The concentration value of medicine residual is shown in the display（8）.
As preferred version of the present utility model, the single-chip microcomputer（7）Input be also associated with input circuit（9）.
As preferred version of the present utility model, the single-chip microcomputer（7）Outfan be also associated with buzzer siren（10）.
As preferred version of the present utility model, the A/D converter（6）For TLC1543 chips.
As preferred version of the present utility model, the single-chip microcomputer（7）For AT89C51 single-chip microcomputers.
As preferred version of the present utility model, the display（8）For LCD liquid crystal displays.
The technical scheme that embodiment of the present utility model is provided can include following beneficial effect：
By the way that chemoluminescence method and photoelectric detecting technology are combined, the sample of traditional detection method presence can be effectively made up
Preprocessing process is loaded down with trivial details, time-consuming complicated and consumes the deficiencies such as reagent, realizes the quick real-time high-precision detection of pesticide residues；Carry
A kind of intelligent detecting method for faint optical signal is supplied, single-chip computer control system has been combined one with faint optical detection circuit
Rise, built a set of intelligent checking system for integrating slight photo-electric signal amplification, collection and transmitting, realize at digitized
Reason；The design of organophosphorus pesticide photodetector system eliminates the circuit design of detection light source, effectively simplifies and reduces
The structure and design complexities of hardware system so that the production cost of pesticide residue photodetector system is relatively low, production efficiency
It is higher.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary, this can not be limited
Utility model.
Description of the drawings
Accompanying drawing herein is merged in description and constitutes the part of this specification, shows and meets of the present utility model
Embodiment, and be used to together explain principle of the present utility model in description.
Fig. 1 is that a kind of module of the organophosphorus pesticide photodetector system according to an exemplary embodiment is illustrated
Figure.
Fig. 2 is a kind of circuit diagram of the photoelectric switching circuit according to an exemplary embodiment.
Fig. 3 is a kind of circuit diagram of the logarithmic amplifying circuit according to an exemplary embodiment.
Fig. 4 is a kind of circuit diagram of the filter circuit according to an exemplary embodiment.
Fig. 5 is a kind of circuit diagram of the main amplifying circuit according to an exemplary embodiment.
Fig. 6 is a kind of A/D converter according to an exemplary embodiment, single-chip microcomputer, display, input circuit and honeybee
The circuit diagram of ring alarm.
Specific embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
The organophosphorus pesticide detection that the organophosphorus pesticide photodetector system that this utility model is provided is used
Principle：Acetylcholinesterase has catalytic action to luminol-hydrogen peroxide chemistry luminescence system.The research table of ecotoxicology
Bright, organophosphorous pesticides on acetylcholinesteraseand has very strong inhibitory action, and its suppression ratio is proportionate with the concentration of pesticide residues,
In the range of finite concentration, there is certain linear relationship between organophosphorus pesticide and the activity of acetylcholinesterase.Pass through
The suppression of organophosphorus pesticide, can cause the chemiluminescence intensity of luminol-hydrogen peroxide-acetylcholine ester enzyme system to a certain degree
Reduce.Light intensity before and after being suppressed by detection, calculates suppression ratio, infers whether containing organophosphorus pesticide, or quantitative analyses have
The residual quantity size of machine phosphorus insecticide.Research and analyse and show, pesticide residues concentration relation proportional to luminous intensity.According to country's mark
Quasi- regulation, the residual suppression ratio of agriculture is not to be exceeded 50%, then belongs to exceeded more than or equal to this numerical value.
Fig. 1 is that a kind of module of the organophosphorus pesticide photodetector system according to an exemplary embodiment is illustrated
Figure.As shown in figure 1, the organophosphorus pesticide photodetector system includes sealing container（1）, photoelectric switching circuit（2）, logarithm
Amplifying circuit（3）, filter circuit（4）, main amplifying circuit（5）, A/D converter（6）, single-chip microcomputer（7）And display（8）.
Wherein, sealing container（1）Inside has been pre-placed luminescent substance（Luminol-hydrogen peroxide-acetylcholine ester enzymology
Learn luminescence system）, for placing solution to be measured（Pesticide combination）.
It should be noted that sealing container（1）It can be the container with the sealing structure such as container stopper or container cover.
Photoelectric switching circuit（2）In include PN junction silicon photoelectric diode D1, and PN junction silicon photoelectric diode D1 be located at it is close
Envelope container (1) is internal.
From chemiluminescence principle, luminol in alkaline solution by hydrogen peroxide oxidation after be in excited state, from swash
Send out and send when state returns to ground state the light that maximum wavelength is 425nm.The responsiveness of comprehensive photodetector, spectral response and stability
The characterisitic parameters such as running voltage, dark current etc. performance indications and device, design photoelectric switching circuit（2）When select PN junction silicon
VTB5051B photodiodes as Detecting Pesticide photodetector, its spectral response range be 330-720nm, with send out
Light system emission wavelength is matched.VTB5051B photodiodes have that simple structure, noise be low, response is fast and good linearity etc. is excellent
Point, there is extensive purposes.
Photodiode photo translative mode mainly has photoelectricity die pressing type and photoconductive mode.Photoelectricity two under photoelectricity die pressing type
The bias voltage of pole pipe is 0, flows out the electric current of photodiode due to being suppressed, two ends electric potential difference accumulation shape to certain numerical value
Into voltage.With dark current is little, the linearity is good and low noise advantages, is suitable for the light-to-current inversion occasion of precision instrumentation,
Concrete photoelectric switching circuit（2）Circuit diagram it is as shown in Figure 2.
Wherein, the V in Fig. 21For photoelectric switching circuit（2）Output voltage.
In the organophosphorus pesticide photodetector system that this utility model is provided, the output of photoelectric switching circuit (2)
End electrically connects with the input of logarithmic amplifying circuit (3), the outfan of logarithmic amplifying circuit (3) and the input of filter circuit (4)
End electrical connection, the outfan of filter circuit (4) is electrically connected with the input of main amplifying circuit (5), the output of main amplifying circuit (5)
End electrically connects with the input of A/D converter (6), and the outfan of A/D converter (6) is electrically connected with the input of single-chip microcomputer (7),
The outfan of single-chip microcomputer (7) is electrically connected with the input of display (8), and organophosphorus pesticide in the solution to be measured for detecting is residual
The concentration value for staying is shown in display（8）.
It should be noted that when detecting pesticide residues concentration using chemoluminescence method, one side photodiode is received
Optical signal it is very faint, on the other hand because detection process can not be in absolute dark surrounds, optical signal detecting be vulnerable to ring
Various noise jammings such as border light.Noise signal is also synchronous Jing after opto-electronic conversion to amplify.Light signal is treated precisely to measure, need to be to light
Electric translation circuit is further processed.
Under normal circumstances, faint optical signal is converted into after photoelectric current by photodetector, and its fluctuation range is from pA levels
To mA levels.Larger dynamic range is unfavorable for signal detection, is difficult to effectively realize that signal is put using conventional linear amplifier
Greatly.On the other hand, it is to adapt to the larger dynamic change of input signal, the A/D selected in subsequent design analog to digital conversion circuit turns
Parallel operation digit also needs corresponding increase.To solve the above problems, it is contemplated that the logarithm of output with the input of logarithmic amplifying circuit is into line
Sexual intercourse, can to a certain degree be compressed, it is allowed to which input signal has larger fluctuation scope to the dynamic range of input signal.This reality
Logarithmic amplifying circuit as shown in Figure 3 is adopted with the pesticide residue photodetector system of new offer（3）Small-signal is entered
Row amplifies, to adapt to the large dynamic range of input signal.
According to logarithmic characteristic, the noise signal compression in mixed signal, weak useful signal can be put by logarithmic transformation
Greatly, useful signal is extracted weak signal from strong noise background.At the same time, the input signal of wider dynamic range is passed through
Logarithmic compression process, adopting can just realize the maximum undistorted conversion to signal compared with lower-order digit A/D converter.
Therefore, this utility model devises the logarithmic amplifying circuit shown in Fig. 3（3）, the logarithmic amplifying circuit（3）Based on point
Vertical original paper and design, constitute complementary symmetry circuits using two characteristic identical transistors, the reverse saturation of transistor can be cut down
The impact that electric current is caused to operation relation.V in Fig. 3refIt is set to 5V；Transistor voltage VT=kT/q, k=1.38 × 10-23Joule/
Degree (Boltzmann constant), q is electronic charge, and T is absolute temperature (unit is Kelvin).Wherein, temperature change can be to VT
Impact is produced, so as to cause discharge circuit output voltage V2Fluctuation.To keep input/output relation to stablize, draw during circuit design
Enter the critesistor R of a positive temperature coefficientT, its temperature varying coefficient is consistent with the change of transistor PN junction, largely realizes
To VTCanceling compensation, overcome the negative effect produced due to temperature change.
Additionally, the signal to noise ratio in order to improve detection circuit, this utility model is by logarithmic amplifying circuit（3）The voltage V of output2
Process is filtered using band filter.To ensure the accuracy of detection of pesticide residues, this utility model is employed as shown in Figure 4
Filter circuit（4）The noise signal for removing environment noise and being introduced by preamplifier, wherein, V2It is logarithmic amplifying circuit
（3）It is input into filter circuit（4）Voltage, V3For filter circuit（4）Output voltage.
Ultra-weak electronic signal is more preferably to meet sampled voltage to want after above opto-electronic conversion, logarithmic amplification and DC filtering
Ask, this utility model devises the main amplifying circuit shown in Fig. 5（5）The amplitude of d. c. voltage signal is done at further amplification
Reason, wherein, V3For filter circuit（4）It is input into main amplifying circuit（5）Voltage, V4For main amplifying circuit（5）Output voltage.
As preferred version of the present utility model, single-chip microcomputer（7）Input be also associated with input circuit（9）.
The threshold value for carrying out pesticide residues concentration for the convenience of the user is arranged, and this utility model have also been devised input circuit（9）.
As preferred version of the present utility model, single-chip microcomputer（7）Outfan be also associated with buzzer siren（10）.
Single-chip microcomputer（7）P1.5 mouths can be with external buzzer siren（10）Report to the police, work as single-chip microcomputer（7）Detect pesticide residues
When the testing result of concentration exceedes given threshold, start buzzer siren（10）Report to the police, to remind user's solution Pesticides to be measured
Residual concentration is exceeded.
As preferred version of the present utility model, A/D converter（6）For TLC1543 chips.
According to detecting system measurement demand, TLC1543 chips are selected during system design as A/D converter（6）.
TLC1543 chips be 20 foot DIP encapsulation the bit switch electric capacity of CMOS 10 gradually A/D approaches analog-digital converter, inside have three controls
Input CS, CLK, ADDR and a data output end SDO follow serial peripheral equipment interface SPI agreement, it is desirable to which microprocessor has
SPI interface.Sample-hold circuit is provided with piece, in EOC, EOC（19 feet）Outfan uprises and shows to convert.Tool
Have at high speed（10 μ S conversion times）, high accuracy（10 bit resolutions, maximum ± 1LSB can not alignment error）It is excellent with low noise etc.
Point, can meet this detecting system actual requirement.
As preferred version of the present utility model, single-chip microcomputer（7）For AT89C51 single-chip microcomputers.
The selection of microprocessor directly influences the performance of detecting system, and SCM Based control system is adapted to middle low speed
The collection and process of data.From the higher AT89C51 single-chip microcomputers of sexual valence as controller, it includes 4bytes and can wipe repeatedly
The read-only program memory (PEROM) write and the random accesP data storage of 128bytes（RAM）, device using ATMEL it is public
Department high density, nonvolatile storage technologies production, compatibility standard MCS-51 instruction system, 8 central processing units of built-in general-purpose and
Flash memory element.AT89C51 single-chip microcomputers have the advantages that complete function and cost performance are high, fully meet this pesticide residue
The requirement of photodetector system.
As preferred version of the present utility model, display（8）For LCD liquid crystal displays.
More general LCD1602 liquid crystal displays are selected for the display that Detecting Pesticide result shows, can be shown
Show 2 row, 16 characters, there are tri- control ports of 8 bit data bus and RS, R/W, EN, and adjust with character contrast and backlight
Section.
In order to A/D converter is better described（6）, single-chip microcomputer（7）, display（8）, input circuit（9）, buzzer siren
（10）Between circuit connecting relation, this utility model shows A/D converter by Fig. 6（6）, single-chip microcomputer（7）, display
（8）, input circuit（9）With buzzer siren（10）Circuit diagram.
In figure 6, V4For main amplifying circuit（5）It is input into as A/D converter（6）TLC1543 chips voltage,
TLC1543 chips receive V by AIN0 ports4, the SDO pins of TLC1543 chips with as single-chip microcomputer（7）AT89C51 it is mono-
The P1.0 pins connection of piece machine, the ADDR pins of TLC1543 chips are connected with the P1.1 pins of AT89C51 single-chip microcomputers, TLC1543
The CS pins of chip are connected with the P1.2 pins of AT89C51 single-chip microcomputers, CLK pin and the AT89C51 single-chip microcomputers of TLC1543 chips
The connection of P1.3 pins, the EOC pins of TLC1543 chips are connected with the P1.4 pins of AT89C51 single-chip microcomputers；AT89C51 monolithics
The RST pins of machine are connected with reset circuit, for making circuit return to state；The XTAL1 pins of AT89C51 single-chip microcomputers,
XTAL2 pins are connected respectively with crystal oscillating circuit, clock frequency necessary to for obtaining AT89C51 single-chip microcomputers；AT89C51 monolithics
The P0.0-P0.7 pins of machine are connected respectively with pull-up resistor RP1, for dragging down electric current, protect the input of AT89C51 single-chip microcomputers defeated
Outlet is not burned；The P1.5 pins of AT89C51 single-chip microcomputers and buzzer siren（10）Connection, for detecting solution to be measured
Pesticide Residues concentration starts buzzer siren when reaching default value（10）；As display（8）LCD liquid crystal displays
D0-D7 pins are connected respectively with the P0.0-P0.7 pins of AT89C51 single-chip microcomputers, for receiving the output of AT89C51 single-chip microcomputers
Data are simultaneously shown, tri- pins of RS, R/W, EN of LCD liquid crystal displays P2.0 respectively with AT89C51 single-chip microcomputers,
P2.1, P2.2 pin is connected, slide plate, the wiring respectively with swept resistance RV2 of VEE, VDD, VSS pin of LCD liquid crystal displays
Post, earth terminal are connected, for adjusting the screen intensity of LCD liquid crystal displays；Input circuit（9）It is right respectively including button B2-B4
Should be threshold value and key and threshold value add-substract key are set, and be connected respectively with 3 pins of the P3.2-P3.4 of AT89C51 single-chip microcomputers, and press
Key B2-B4 is in parallel with protective resistance R16, R17, R18 respectively.
In the organophosphorus pesticide photodetector system provided using this utility model, staff will can be contained
The solution to be measured of organophosphorus pesticide is inserted containing luminescent substance（Luminol-hydrogen peroxide-acetylcholinesterase chemical luminophor
System）Sealing container（1）It is interior, according to organophosphorus pesticide Cleaning Principle, luminol-hydrogen peroxide-acetylcholine ester enzymology
The acetylcholinesterase learned in luminescence system is suppressed by organophosphorus pesticide, and suppression ratio is proportionate with the concentration of pesticide residues,
Cause sealing container（1）The chemiluminescence intensity one of internal luminol-hydrogen peroxide-acetylcholinesterase chemical luminous system
Determine degree reduction.Now, photoelectric switching circuit（2）In PN junction silicon photoelectric diode D1 receive sealing container（1）Internal Shandong
The optical signal that minot-hydrogen peroxide-acetylcholinesterase chemical luminous system is sent, the optical signal passes through PN junction silicon photoelectricity two
Pole pipe D1 is converted into voltage signal, and by photoelectric switching circuit（2）The voltage signal is input into logarithmic amplifying circuit（3）, and
Through logarithmic amplifying circuit（3）The voltage signal is carried out after small-signal amplification, be input into filter circuit（4）Carry out direct current filter
Ripple denoising, then by filter circuit（4）Voltage signal after denoising is input into main amplifying circuit（5）Carry out the amplitude of voltage signal
Processing and amplifying, is finally input into the voltage signal after processing and amplifying to A/D converter（6）, by A/D converter（6）Voltage is believed
Number digital signal is converted to, and the digital signal is input into single-chip microcomputer（7）, due to single-chip microcomputer（7）Be stored with sealing container
Internal luminol-hydrogen peroxide-corresponding initial digital signal of acetylcholinesterase chemical luminous system, single-chip microcomputer（7）Can
To calculate the residual concentration of organophosphorus pesticide in solution to be measured according to the initial digital signal and the digital signal for receiving,
And by the data is activation comprising the residual concentration to display（8）Shown.Additionally, single-chip microcomputer（7）Also it is circumscribed with input electricity
Road（9）And buzzer siren（10）, single-chip microcomputer（7）Input circuit can be passed through with receive user（9）The residual concentration threshold of input
Value, and when the residual concentration numerical value of organophosphorus pesticide in detecting solution to be measured reaches the residual concentration threshold value, enable buzzing
Alarm（10）Reported to the police.
In sum, a kind of organophosphorus pesticide photodetector system that this utility model is provided, by the way that chemistry is sent out
Light method and photoelectric detecting technology combine, and the sample pretreatment process that can effectively make up traditional detection method presence is loaded down with trivial details, time-consuming
The deficiencies such as complicated and consumption reagent, realize the quick real-time high-precision detection of pesticide residues；Faint light is directed to there is provided a kind of
The intelligent detecting method of signal, single-chip computer control system is combined together with faint optical detection circuit, has built a set of collection micro-
The low light level signal of telecommunication amplifies, the intelligent checking system that collection and transmission are integrated, and realizes digitized processing；Pesticide residue photoelectricity
The design of detecting system eliminates the circuit design of detection light source, and structure and the design for effectively simplifying and reducing hardware system is multiple
Miscellaneous degree so that the production cost of pesticide residue photodetector system is relatively low, and production efficiency is higher.
It should be noted that this utility model is only protected by sealing container（1）, photoelectric switching circuit（2）, logarithmic amplification electricity
Road（3）, filter circuit（4）, main amplifying circuit（5）, A/D converter（6）, single-chip microcomputer（7）, display（8）And input circuit
（9）, buzzer siren（10）Deng the hardware net physical platform that device or part are constituted, without regard to software section therein.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit this utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (6)
1. a kind of organophosphorus pesticide photodetector system, it is characterised in that including sealing container（1）, photoelectric switching circuit
（2）, logarithmic amplifying circuit（3）, filter circuit（4）, main amplifying circuit（5）, A/D converter（6）, single-chip microcomputer（7）And show
Device（8）；
Wherein, the sealing container（1）Inside has been pre-placed luminescent substance, for placing solution to be measured, the luminescent substance
For luminol-hydrogen peroxide-acetylcholinesterase chemical luminous system, the solution to be measured is pesticide combination；
The photoelectric switching circuit（2）In include PN junction silicon photoelectric diode D1, and the PN junction silicon photoelectric diode D1 positions
It is internal in the sealing container (1)；
The outfan of the photoelectric switching circuit (2) is electrically connected with the input of the logarithmic amplifying circuit (3), and the logarithm is put
The outfan of big circuit (3) is electrically connected with the input of the filter circuit (4), the outfan of the filter circuit (4) and institute
The input electrical connection of main amplifying circuit (5) is stated, the outfan of the main amplifying circuit (5) is defeated with the A/D converter (6)
Enter end electrical connection, the outfan of the A/D converter (6) is electrically connected with the input of the single-chip microcomputer (7), the single-chip microcomputer
(7) outfan is electrically connected with the input of the display (8), and by organophosphorus pesticide in the solution described to be measured for detecting
Residual concentration value is shown in the display（8）.
2. organophosphorus pesticide photodetector system according to claim 1, it is characterised in that the single-chip microcomputer（7）
Input be also associated with input circuit（9）.
3. organophosphorus pesticide photodetector system according to claim 1, it is characterised in that the single-chip microcomputer（7）
Outfan be also associated with buzzer siren（10）.
4. organophosphorus pesticide photodetector system according to claim 1, it is characterised in that the A/D converter
（6）For TLC1543 chips.
5. organophosphorus pesticide photodetector system according to claim 1, it is characterised in that the single-chip microcomputer（7）
For AT89C51 single-chip microcomputers.
6. organophosphorus pesticide photodetector system according to claim 1, it is characterised in that the display（8）
For LCD liquid crystal displays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621179117.1U CN206177821U (en) | 2016-10-26 | 2016-10-26 | Organic phosphorus pesticide residue photoelectric detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621179117.1U CN206177821U (en) | 2016-10-26 | 2016-10-26 | Organic phosphorus pesticide residue photoelectric detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206177821U true CN206177821U (en) | 2017-05-17 |
Family
ID=58683054
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621179117.1U Expired - Fee Related CN206177821U (en) | 2016-10-26 | 2016-10-26 | Organic phosphorus pesticide residue photoelectric detection system |
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| Country | Link |
|---|---|
| CN (1) | CN206177821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049531A (en) * | 2021-03-17 | 2021-06-29 | 盐城师范学院 | Spectrum detection method for pesticide residue detection |
-
2016
- 2016-10-26 CN CN201621179117.1U patent/CN206177821U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049531A (en) * | 2021-03-17 | 2021-06-29 | 盐城师范学院 | Spectrum detection method for pesticide residue detection |
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