CN203101260U - Device for detecting organophosphorus pesticide residues - Google Patents
Device for detecting organophosphorus pesticide residues Download PDFInfo
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- CN203101260U CN203101260U CN 201220659524 CN201220659524U CN203101260U CN 203101260 U CN203101260 U CN 203101260U CN 201220659524 CN201220659524 CN 201220659524 CN 201220659524 U CN201220659524 U CN 201220659524U CN 203101260 U CN203101260 U CN 203101260U
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Abstract
The utility model discloses a device for detecting organophosphorus pesticide residues and belongs to the field of pesticide residue detection. The device comprises a 51 single chip, a TCS230 sensor, a sealed detection box, a reflection plate, a color detection circuit, an eight-bit nixie tube, a display circuit, an alarm circuit, a biochemical reaction substrate-acetylthiocholine iodide, acetylcholine esterase, a detection test tube and a power supply. The device is provided with an impedance biosensor and used for detecting the organophosphorus pesticide residues through information conversion of the TCS230 sensor and overall control of the 51 single chip. Compared with the prior art, the device disclosed by the utility model has the characteristics that a detection instrument adopting the device is lower in cost; the detection cycle is short; and the operation automation can be achieved, so that the sample measurement quantity is increased.
Description
Technical field:
The present invention relates to a kind of pick-up unit of organophosphorus pesticide, the liquid to be measured that will contain the agricultural product of residues of pesticides is put into pick-up unit, add detectable, by the TCS230 sensor reaction result of detectable and remains of pesticide is converted to electric signal, pass through the control and treatment of single-chip microcomputer again, use 8 charactrons that testing result is exported.When detected residues of pesticides concentration is higher than the state food safety standard, start warning circuit and report to the police, there is potential safety hazard in the prompting agricultural product.The invention belongs to the Detecting Pesticide device.
Background technology:
The organophosphorus pesticide problem that exceeds standard has brought serious hidden danger for the food security in the agricultural product.Control residues of pesticides one of effective method the most are the dynamics of strengthening Detecting Pesticide.In the food safety detection process, usually need numerous and diverse pre-treatment, need the instrument of large amount of complex, costliness, and be difficult to realize on-the-spot the detection.Biology sensor has reduced the analysis time of measuring through the tremendous development of four more than ten years, and the sensitivity that has improved instrument makes the mensuration process become more simple, is convenient to realize robotization.The development trend and the emphasis direction of following biology sensor are microminiaturization, multifunction, intellectuality and integrated.The biology sensor of Development of New Generation low cost, high sensitivity, high stability and high life is the focus of studying at present.
Existing in the market Detecting Pesticide device has following some drawback:
(1) bulky, the complex structure of detecting instrument, cost an arm and a leg;
(2) exist during Detecting Pesticide the process complexity, time-consuming, expense is high;
(3) need skilled professional and technical personnel, can't accomplish that real-time continuous detects;
(4) sense cycle of traditional detecting device is long.
Therefore, a energy of design fast detecting; Can increase the sample measured quantity; The pick-up unit that can realize operation automation is very necessary.
Sense cycle at the residual pick-up unit of existing farming is long, the testing process complexity, and shortcomings such as checkout equipment costliness, the present invention discloses a kind of organophosphorus pesticide pick-up unit, can realize that the simple and easy of residues of pesticides detects fast, easily realizes robotization.
Organophosphorus pesticide pick-up unit disclosed by the invention, the overall control of information translation by the TCS230 sensor and 51 single-chip microcomputers realizes the detection to organophosphorus pesticide.When detected residues of pesticides concentration is higher than the state food safety standard, start warning circuit and report to the police, there is potential safety hazard in the prompting agricultural product.Pick-up unit has higher utility.
Summary of the invention:
The design the objective of the invention is to disclose a kind of Detecting Pesticide device at prior art problems and defective, it is characterized in that the research and design cost is low, sense cycle short, practical, reliability is high, can realize the residual fast detecting of farming.The seizure of the concentration information of organophosphorus pesticide realizes according to the active principle of organophosphorus and carbamate chemicals for agriculture energy acetylcholine esterase inhibition; The detection of the concentration information of organophosphorus pesticide and conversion are to realize by the TCS230 sensor; The reception of the pulse signal of sensor output realizes by 89C51 single-chip microcomputer and display circuit with demonstration.
At prior art problems and defective, the objective of the invention is to disclose a kind of pick-up unit of organophosphorus pesticide, it is characterized in that constituting by 51 single-chip microcomputers [1], TCS230 sensor [2], airtight detection case [3], reflector [4], color detection circuit [5], 8 charactrons [6], display circuit [7], warning circuit [8], biochemical reaction substrate acetyl cholinesterase iodide [9], acetylcholinesterase [10], test tubes [11], switch [12], power supply [13].
The pick-up unit of described organophosphorus pesticide is characterized in that being realized by the active principle of organophosphorus acetylcholine esterase inhibition [10] seizure of organophosphorus pesticide information.
The pick-up unit of described organophosphorus pesticide is characterized in that being realized by TCS230 sensor [2] and color detection circuit [5] detection and the conversion of organophosphorus pesticide information.TCS230 sensor [2] is the converter of a kind of colorama able to programme to frequency, i.e. color sensor.By color detection circuit [5] the color gradient information of chemical reaction is converted into electric signal.
The pick-up unit of described organophosphorus pesticide, it is characterized in that preventing the influence of external light source to testing process by airtight detection case [3], with TCS230 sensor [2], test tubes [11], reflector [4] places same straight line, the compensatory light of TCS230 sensor [2] sees through test tubes [11], by reflector light source information is being fed back to sensor, and sensor receives light source information.Whole testing process is carried out in airtight detection case [3].
The pick-up unit of described organophosphorus pesticide is characterized in that being realized by 51 single-chip microcomputers [1] and display circuit [7] reception and the demonstration of sensor output pulse signal.Select for use 51 single-chip microcomputers [1] as the control core, 18 charactrons [6] are as the output display end.
The pick-up unit of described organophosphorus pesticide is characterized in that studying relation between pesticide concentration information and the detecting device display message by the test experience of variable concentrations organophosphorus pesticide, sets up both detection by quantitative models.Determine the safety detection limit of residues of pesticides by state food safety standard (GB16333-1996).
The pick-up unit of described organophosphorus pesticide, it is characterized in that reporting to the police by warning circuit [8], when detected residues of pesticides concentration is lower than the state food safety standard, the residual pick-up unit of farming shows detection numerical value, when detected residues of pesticides concentration is higher than the state food safety standard, start warning circuit [8] and report to the police, and there is potential safety hazard in the prompting agricultural product.
Compared with prior art, the present invention:
(1) detection is quicker, the detecting instrument cost is lower;
(2) time that can reduce analytic process as far as possible and spent;
(3) by single-chip microcomputer signal is handled, can be realized operation automation, increase the sample measured quantity;
(4), can reduce the error of manual operation by the foundation of detection by quantitative model;
(5) more environmental protection, the raw material of detection are a spot of chemical additives, can alleviate discharging and pollution to environment.
Description of drawings:
Fig. 1 is agricultural residual pick-up unit overall construction drawing
Fig. 2 is that the organophosphorus pesticide concentration information is caught schematic diagram
Fig. 3 is TCS230 sensor information transfer principle figure
Fig. 4 is the software flow pattern of color detection identification
Fig. 5 is a single-chip microcomputer display circuit schematic diagram
Embodiment:
Below in conjunction with embodiment this device is described further:
As shown in Figure 1, the liquid to be measured that will contain the agricultural product of residues of pesticides is put into pick-up unit, add detectable, by TCS230 sensor [2] reaction result of detectable and remains of pesticide is converted to electric signal by color detection circuit [5], through the control and treatment of 51 single-chip microcomputers [1], use 8 charactrons [6] that testing result is exported again.When detected residues of pesticides concentration is higher than the state food safety standard, start warning circuit [8] and report to the police, there is potential safety hazard in the prompting agricultural product.
As shown in Figure 2, in the extract of agricultural product, add biochemical reaction substrate acetyl cholinesterase iodide [9] and acetylcholinesterase [10], if it is residual or residual quantity is low not contain organophosphorus pesticide in the agricultural product, the activity of acetylcholinesterase [10] just is not suppressed, the substrate acetyl cholinesterase iodide [9] that adds in the experiment just can be hydrolyzed, and the developer reaction of hydrolysate and adding produces yellow substance.If the extract of agricultural product contains agricultural chemicals and residual quantity when higher, the activity inhibited of acetylcholinesterase [10], substrate acetyl cholinesterase iodide [9] just is not hydrolyzed, when adding developer, just do not develop the color or change color very little.By the method the concentration information of agricultural chemicals is caught out, be converted into the color gradient information of solution.
As shown in Figure 3, when incident light projects on the TCS230 sensor [2],, can select different wave filters by the various combination of photodiode control pin S2, S3; Through the square wave (dutycycle is 50%) of excess current output different frequency behind the frequency converter, the square wave of the corresponding different frequency of different colors and light intensity; Can also select different output-scale-factors by output calibration control pin S0, S1, reference frequency output be adjusted, to adapt to different demands.In the present invention, in order to improve the resolution of TCS230 sensor [2], select 100% output-scale-factor, i.e. S0=H; S1=H, in the selection of wave filter, through experimental verification, different filters can adapt to different Pesticides Testing, and this experiment is an example with Rogor, chooses red filter, i.e. S2=L; S3=L.
As shown in Figure 4, system initialization is responsible for being provided with the working method of the timer/counter of 89C51, selects the output-scale-factor of TCS230, enables the setting of output pin and messaging parameter.Whether after initialization is finished, detecting needs to carry out the white balance adjustment.If any, adjust the white balance subroutine; Otherwise, forward next step to, whether detect needs to carry out color identification.As not needing color identification, return; As the identification of needs color, call the color recognition subroutine, finish up to color identification.
As shown in Figure 5, the reception of the pulse signal of TCS230 sensor [2] output realizes by 51 single-chip microcomputers [1] and display circuit [7] with demonstration.Select for use 51 single-chip microcomputers [1] as the control core, 18 charactrons [6] are as the output display end.The P0 mouth of 51 single-chip microcomputers [1] connects the segment encode control of 8 charactrons [6], and wherein P0.0～P0.6 connects the A～G pin of 8 charactrons [6] respectively, and P0.7 connects the DP end, and low level is effective.The P2 mouth connects 8 charactrons [6] bit code gate unit, and the P2.0 mouth is controlled the 1st charactron, until the P2.7 mouth is controlled the 8th, high level is effective.
Compared with prior art, the present invention can realize that the simple and easy of organophosphorus pesticide concentration detects efficiently, because testing process is to realize by the information translation of sensor and the overall control of single-chip microcomputer, shortened sense cycle, having reduced the people is the error that causes, and realizes that easily robotization detects.
Claims (3)
1. the pick-up unit of an organophosphorus pesticide is characterized in that being made of 51 single-chip microcomputers [1], TCS230 sensor [2], airtight detection case [3], reflector [4], color detection circuit [5], 8 charactrons [6], display circuit [7], warning circuit [8], biochemical reaction substrate acetyl cholinesterase iodide [9], acetylcholinesterase [10], test tubes [11], switch [12], power supply [13]; Control whole detection system by 51 single-chip microcomputers [1], the detection of concentration information and conversion are to realize by TCS230 sensor [2] and color detection circuit [5]; Whole testing process is carried out in airtight detection case [3], detects data and shows output by 8 charactrons [5]; When detected residues of pesticides concentration is higher than the state food safety standard, start warning circuit [8] and report to the police, there is potential safety hazard in the prompting agricultural product.
2. the pick-up unit of residues of pesticides according to claim 1 is characterized in that being realized by TCS230 sensor [2] and color detection circuit [4] detection and the conversion of organophosphorus pesticide information; TCS230 sensor [2] is the converter of a kind of colorama able to programme to frequency, i.e. color sensor; Is electric signal by color detection circuit [4] with the color gradient information translation of chemical reaction.
3. the pick-up unit of residues of pesticides according to claim 1, it is characterized in that preventing the influence of external light source to testing process by airtight detection case [3], with TCS230 sensor [2], test tubes [11], reflector [4] places same straight line, the compensatory light of TCS230 sensor [2] sees through test tubes [11], by reflector [4] light source information is being fed back to sensor, and sensor receives light source information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659524 CN203101260U (en) | 2012-12-04 | 2012-12-04 | Device for detecting organophosphorus pesticide residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659524 CN203101260U (en) | 2012-12-04 | 2012-12-04 | Device for detecting organophosphorus pesticide residues |
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| CN203101260U true CN203101260U (en) | 2013-07-31 |
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| CN 201220659524 Expired - Fee Related CN203101260U (en) | 2012-12-04 | 2012-12-04 | Device for detecting organophosphorus pesticide residues |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196842A (en) * | 2012-12-04 | 2013-07-10 | 西北农林科技大学 | Device for detecting organophosphorus pesticide residues |
| CN108051552A (en) * | 2017-11-03 | 2018-05-18 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of fruit pesticide residue detection device |
-
2012
- 2012-12-04 CN CN 201220659524 patent/CN203101260U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196842A (en) * | 2012-12-04 | 2013-07-10 | 西北农林科技大学 | Device for detecting organophosphorus pesticide residues |
| CN108051552A (en) * | 2017-11-03 | 2018-05-18 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of fruit pesticide residue detection device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20131204 |