CN202256163U - Portable pesticide residual toxicity photoelectric fast detector - Google Patents
Portable pesticide residual toxicity photoelectric fast detector Download PDFInfo
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- CN202256163U CN202256163U CN2011203639358U CN201120363935U CN202256163U CN 202256163 U CN202256163 U CN 202256163U CN 2011203639358 U CN2011203639358 U CN 2011203639358U CN 201120363935 U CN201120363935 U CN 201120363935U CN 202256163 U CN202256163 U CN 202256163U
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Abstract
The utility model discloses a portable pesticide residual toxicity photoelectric fast detector, which comprises an enclosure, a base, a separating unit, a detection analysis room, a photoelectric signal processing module, a microprocessor, a touch screen, a zero adjustment module, a printer and a network connection port, and the working principle of the fast detector is that: a pretreatment sample is introduced into a sample valve, and is extracted and separated via an analytical carrier fluid, the separating medium and the fluorescer are mixed, and are quickly enriched and extracted, the chemiluminescence reaction is initiated via the oxidizing agent in a detection and analysis room, and after photoelectric conversion, signal magnifying and microprocessor processing, a high definition true-color screen displays or prints or outputs the detection result through network connection; and the utility model has the advantages of small volume, simple structure, economy, applicability, accurate detection result, short used time and convenience in carrying, and can quickly detect fruits and vegetables or other agricultural products on site.
Description
Technical field
The utility model belongs to food residual toxicity checkout equipment field, and is particularly related to a kind of portable residual toxicity photoelectricity fast detecting appearance that utilizes chemiluminescence principle, photoelectric conversion technique and singlechip technology.
Background technology
Along with people's is to the enhancing of health perception; And to the growing interest of food-safety problem; To detecting with closely bound up vegetable melon and fruit of people's daily life and the residual toxicity amount in the agricultural byproducts, what become that one vegetable melon and fruit get into the supermarket must be through program.
Data presentation according to the statistics made by the departments concerned, China's agricultural chemicals year use amount broke through 800,000 tons in 2010, occupied first place in the world.Therefore, the persticide residue in the food such as control vegetable melon and fruit etc. seems to the harm of human body and is even more important.At present, one of the most frequently used and effective method is the inspecting force of strengthening residues of pesticides in the food.Detection means commonly used is normally delivered to the laboratory with sample, utilizes special residual hazard instrument to carry out assay by the professional inspection personnel, and this means not only waste time and energy; The detection cost is high; And efficient is low, is unfavorable for the expansion of inspecting force, causes a lot of products just through sampling observation; Even portioned product just do not flowed into market through detecting, and the healthy of people in serious threat.
At present, the product of several kinds of residual toxicity context of detection below the existence on the market:
1, the GDYN series pesticide residual hazard fast detecting appearance of Jilin University cygnet Instr Ltd..Its principle of work is based on agricultural chemicals in the sample to the inhibiting effect of cholinesterase activity and influence the speed of chromogenic reaction, through the mensuration of chromogenic reaction speed being measured wherein residual toxicity amount (being inhibiting rate).Instrument is made up of super brightness silicon radiant, colorimetric pool, integrated electro sensor, temperature sensor, microprocessor and printer, can directly on touch-screen, demonstrate the residual toxic dose of agricultural chemicals in the sample, and can directly print testing result.
2, the KSJ-4A series portable residual toxicity of pesticide of the fluffy biological medicine company in capital, Shandong incorporated company.The activity with temperature that its principle of work is based on enzyme changes and the characteristic of variation, and adopts startup alternating temperature program automatically, thereby makes detection not receive the restriction of environment temperature, and single sample needs 10 minutes detection time approximately.
3, the HQNC-800 residual toxicity fast measuring appearance of the auspicious emerging Instr Ltd. of Dongguan City.Its principle of work is based on enzyme and suppresses method.According to standard GB/T5009.199-2003 " fast detecting of organophosphorus and carbamate pesticide residue amount in the vegetables " and industry standard NY/448-2001 " organophosphorus and carbamate chemicals for agriculture residual hazard method for quick on the vegetables " development; Six passage detection techniques, the residues of pesticides situation of ability fast detecting agricultural product.
If make the residual toxicity of pesticide can be, just must possess that operation is simple, volume is little and be easy to carry, short and result detection time characteristics such as accurate in basic unit's first line widespread use.Though the said goods is applied; And on function, possess the fast advantage of detection speed, easy to carry but detecting instrument itself is not also accomplished, the characteristics of promptly real miniaturized design; And what detect that principle generally adopts is bioanalysis; Its reaction system is comparatively complicated, is vulnerable to the influence of activity, medium and the coexistence component of environment temperature, enzyme, and there are wretched insufficiency in the reliability and the reappearance of analytic signal itself.
Breadboard residual hazard detects and adopts chromatogram detector or Mass Spectrometer Method appearance usually, perhaps chromatogram and mass spectrum logotype, but because instrument costs an arm and a leg, and detection time is longer, and does not have microminiaturization, and it is also very difficult therefore will to promote the use of basic unit's first line.
Therefore,, will be one and both help quality supervision department's supervision, help guaranteeing the important topic of common people's food security again if can provide a kind of small and exquisite convenient mode to realize vegetable melon and fruit being detected rapidly and accurately then and there.
The utility model content
Because most of agricultural chemicals is independent or composite the processing of agricultural chemicals such as organochlorine class of having been forbidden at present by organic phosphates, carbamates and part, comprising: the thimet of organic phosphates, demeton, parathion, metrifonate, Rogor, DDVP; The dieldrite of organochlorine class, endrin, D.D.T. (dichloro-diphenyl-trichloroethane), Niran etc.
The utility model discloses employing phototransformation-chemiluminescence detection for detecting the portable residual toxicity of pesticide of principle, have the accuracy of detection height, detection speed is fast, easy and simple to handle, volume is little, be easy to carry, and the advantage of suitable China's national situation.
The portable residual toxicity of pesticide of the utility model comprises: casing, base, sample intake passage, tripping device, Photoelectric Signal Processing module, circuit module, output module; Described tripping device, Photoelectric Signal Processing module, output module are installed on the base; Described output module comprises touch-screen and printer; Described Photoelectric Signal Processing module is electrically connected with output module, and sampling valve, separating column, check and analysis chamber are installed on the described tripping device.
The further inventive point of the utility model is: photomultiplier, A/D change-over circuit, filtering circuit, signal operation amplifier, microprocessor, voltage zeroing module are set in the Photoelectric Signal Processing module; Sample intake passage is provided with the microchannel of pretreatment sample and the microchannel of luminescence system reagent; Be provided with photomultiplier circuit, clock chip circuit, serial port circuit, power circuit and touch screen circuitry in the circuit module; Comprise SPI module, universal asynchronous serial port module, 8 road high-speed a/d modular converters in the microprocessor; Output module is provided with the RS232 serial port circuit.
The principle of work of the utility model is: the product solution that will contain above-mentioned various kinds of drug composition mixes with ionic liquid at room temperature as the analysis carrier fluid through sampling valve; Through separating column to agricultural chemicals in the solution gamble the high speed enrichment and the extraction of component; Parting liquid gets into the check and analysis chamber then; Make parting liquid and fluorescer blend; Under the visible light irradiation of doses, wherein between product and oxygenant (N-bromosuccinimide) cause chemiluminescence reaction and produce strong luminescence phenomenon, the light signal of generation is realized opto-electronic conversion through photomultiplier; Electric signal after the conversion amplifies through high performance operational amplifier; Through the microprocessor of A/D change-over circuit input ic, maintenance data merges and the intelligent optimization technology, adopts the C Programming with Pascal Language to realize analysis, identification to data then; Make it with microprocessor in the correlation parameter database of tens of kinds of common agricultural chemicals pre-depositing analyze residual toxicity kind and solubility in the fruits and vegetables sample to be measured intelligently through the mode of comparison, analysis result perhaps is connected with network through portable residual toxicity of pesticide screen displaying or printer output.
Owing to adopted technique scheme, make that to carry out analyzing and testing very convenient quick and accurately to remaining in residual toxicity on the agricultural product such as vegetables, fruit, and this apparatus structure is simple; Volume is little, and (20cm * 15cm * 5cm), testing result is accurate, and speed is fast; Be easy to carry, easy and simple to handle, only need according to the screen prompt touch operation; Need not the professional, detect once and needed only the accuracy of detection height 2～3 minutes; Can be applicable to organophosphorus and the Preliminary detection of carbamate chemicals for agriculture residual hazard content in vegetables, the fruit; Be specially adapted to agricultural base and specialist and pluck preceding speed survey, agricultural trade wholesale market, the on-the-spot speed survey of vegetables home-delivery center, the fast survey before supermarket, food market, restaurant, dining room, the family's garden stuff processing.In addition, also can be used for units such as the nuisanceless supervision of agricultural product inspection center, industrial and commercial bureau, Bureau of Technical Supervision, health and epidemic prevention station detects and controls persticide residue in the gourd, fruit and vegetable of linchpin department and the agricultural byproducts.
Beneficial effect
The portable residual toxicity of pesticide of the utility model adopts up-to-date micro-control flow analysis system to substitute traditional hand or mechanical liquid adding type reactive system; Photoelectric conversion section employing import ultraminiaturization photomultiplier (size: 5cm * 2.5cm * 2cm); Make the microminiaturized instrument of the utility model can accomplish volume minimum (size: 20cm * 15cm * 5cm), and easy and simple to handle, testing result is accurate; Need not the professional, detect an only use and take 2～3 fens clock times.
Below in conjunction with accompanying drawing and embodiment the utility model is done and to be further described.
Description of drawings
Fig. 1 is the system works schematic diagram of the portable residual toxicity of pesticide of the utility model;
Fig. 2 is the system hardware structure figure of the portable residual toxicity of pesticide of the utility model;
Fig. 3 is the software design process flow diagram of the portable residual toxicity of pesticide of the utility model.
Embodiment
Fig. 1 has described the system works schematic diagram of the portable residual toxicity of pesticide of the utility model; Its concrete job step is: a. introduces sampling valve 4 by the microchannel with pretreated test sample solution; And introduce room-temperature ion by another microchannel and analyze carrier fluid 2, pesticide sample 1 and room-temperature ion are analyzed carrier fluid 2 fully mix; B. the mixed liquor with step a gained carries out enrichment, extraction in separating column 5, and the parting liquid of gained imports check and analysis chamber 6; C. the intermediate product that in check and analysis chamber 6, produces under the irradiation of visible light with reagent 3 of parting liquid and oxygenant N-bromosuccinimide generation chemiluminescence reaction produce light signal; D. the light signal that produces of step c is gathered through photomultiplier 7 and is carried out opto-electronic conversion; E. operational amplifier amplifies the steps d electrical signal converted, carry out filtering through filtering circuit after, through after A/D change-over circuit 8 conversion with the M430 single-chip microcomputer 9 of electric signal input ic; F. the electric signal of 9 pairs of e steps of microprocessor analyze, identification, and with the data comparative analysis fruits and vegetables sample to be measured that is pre-stored in the database in residual toxicity kind and solubility; G. through touch-screen 10 or printer 11 or internetwork connection mode output testing result.
In above-mentioned principle of work; Through function analysis to singlet oxygen and various agricultural chemicals; By the reaction relation of means research singlet oxygen such as Experimental Characterization and quantum chemistry calculation and related substances, set up corresponding chemiluminescence or electroluminescence detection method, realize coupling with separation method.Photosignal conversion and multiplying arrangement comprise photomultiplier 7 and A/D change-over circuit 8; Wherein said photomultiplier 7 is the photomultipliers with Metal Packaging; The photoelectric sensor module that described change-over circuit 8 is high-voltage power supply feed circuit; In order to eliminate the dark current influence that produces after photomultiplier 7 energisings, in conversion equipment, added voltage zeroing module, the voltage zeroing before can realizing detecting.
Because the electric signal of photoelectric conversion section is very faint; With there being very big interference and non-linear; Therefore the utility model adopts the Data Fusion algorithm to electric signal, and the data that detected are carried out filtering, identification, optimization etc., has improved the reliability that detects data.In addition, the portable residual toxicity photoelectricity fast detecting appearance of the utility model has also designed the RS232 serial port circuit, is used for database update and revision, also can be used for expansion, as linking to each other with PC.
Fig. 2 has described the system hardware structure figure of the portable residual toxicity of pesticide of the utility model; Comprise microprocessor and various peripheral module; Microprocessor comprises SPI module, universal asynchronous serial port module, 8 road high-speed a/d modular converters; Its frequency of operation reaches as high as 48MHZ, arithmetic speed be common single-chip microcomputer 8-12 doubly, have superpower antijamming capability, plurality of advantages such as processing speed is fast, system architecture is simple, low-power consumption.
Fig. 3 has described the software design process flow diagram of portable residual toxicity of pesticide, comprises clock circuit DS1302 driver, touch-screen driver, SD card driver and master routine etc.Wherein master routine at first carries out initialization to CPU, touch-screen, clock chip, SD card etc.; Afterwards with regard to the circular wait user operation commands; And get into corresponding module and handle subroutine, comprise zeroing, calibration, detection, and the inquiry of historical data, removing, system are provided with etc.
Embodiment described herein only is suggested as embodiment, only the utility model is limited in claims scope required for protection together with the simple replacement of its whole equivalent structure parts according to accompanying claims.
Claims (7)
1. portable residual toxicity photoelectricity fast detecting appearance; Comprise: casing, base, sample intake passage, tripping device, Photoelectric Signal Processing module, circuit module, output module; Described tripping device, Photoelectric Signal Processing module, output module are installed on the base; Described output module comprises touch-screen and printer, and described Photoelectric Signal Processing module is electrically connected with output module, it is characterized in that: sampling valve, separating column, check and analysis chamber are installed on the described tripping device.
2. portable residual toxicity photoelectricity fast detecting appearance as claimed in claim 1, it is characterized in that: described Photoelectric Signal Processing module comprises photomultiplier, A/D change-over circuit, filtering circuit, signal operation amplifier, microprocessor.
3. portable residual toxicity photoelectricity fast detecting appearance as claimed in claim 1, it is characterized in that: described sample intake passage comprises the microchannel of pretreatment sample and the microchannel of luminescence system reagent.
4. portable residual toxicity photoelectricity fast detecting appearance as claimed in claim 1, it is characterized in that: described circuit module comprises photomultiplier circuit, clock chip circuit, serial port circuit, power circuit and touch screen circuitry.
5. portable residual toxicity photoelectricity fast detecting appearance as claimed in claim 2 is characterized in that: comprise SPI module, universal asynchronous serial port module, 8 road high-speed a/d modular converters in the described microprocessor.
6. portable residual toxicity photoelectricity fast detecting appearance as claimed in claim 1 is characterised in that: be electrically connected voltage zeroing module on the described Photoelectric Signal Processing module.
7. portable residual toxicity photoelectricity fast detecting appearance as claimed in claim 1, be characterised in that: described output module is provided with the RS232 serial port circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203639358U CN202256163U (en) | 2011-09-26 | 2011-09-26 | Portable pesticide residual toxicity photoelectric fast detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203639358U CN202256163U (en) | 2011-09-26 | 2011-09-26 | Portable pesticide residual toxicity photoelectric fast detector |
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| CN202256163U true CN202256163U (en) | 2012-05-30 |
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| CN2011203639358U Expired - Fee Related CN202256163U (en) | 2011-09-26 | 2011-09-26 | Portable pesticide residual toxicity photoelectric fast detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007105A (en) * | 2014-06-04 | 2014-08-27 | 宇星科技发展(深圳)有限公司 | Bioluminescence detector and control method thereof |
| CN104677894A (en) * | 2015-01-23 | 2015-06-03 | 潍坊科科电气有限公司 | Pesticide residue detection system and pesticide residue detection method |
| CN111189805A (en) * | 2019-11-27 | 2020-05-22 | 常州大学 | High-precision residual pesticide verification system |
-
2011
- 2011-09-26 CN CN2011203639358U patent/CN202256163U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007105A (en) * | 2014-06-04 | 2014-08-27 | 宇星科技发展(深圳)有限公司 | Bioluminescence detector and control method thereof |
| CN104677894A (en) * | 2015-01-23 | 2015-06-03 | 潍坊科科电气有限公司 | Pesticide residue detection system and pesticide residue detection method |
| CN111189805A (en) * | 2019-11-27 | 2020-05-22 | 常州大学 | High-precision residual pesticide verification system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140926 |
|
| EXPY | Termination of patent right or utility model |