A kind of vegetable pesticide residue detection meansTechnical field
The present invention relates to evaluation of pesticides technical field, specially a kind of vegetable pesticide residue detection means.
Background technology
Agricultural chemicals and its residual to the harm of health and cause be to the pollution of environment it is well-known, especially forGrowth period short vegetable melon and fruit, because pest and disease damage is more, is excessively used agricultural chemicals, causes the exceeded phenomenon of residues of pesticides increasingly to aggravate, greatlyThe residues of pesticides of amount can be produced to human body and directly poisoned, the accumulation and enrichment for causing acute poisoning or causing agricultural chemicals in human body,So as to trigger various diseases, health is directly affected.Present food security is the significant problem for involving the interests of the state and the people, especiallyResidues of pesticides in agricultural product have caused the extensive concern of the whole society.Current pesticide residue detection method is broadly divided into three classes：Biometric techniques, Physico-chemical tests method and fast detection method.Biometric techniques are higher to instruction biological requirement, detection timeLong, measurement result not can determine that pesticide species；Though Physico-chemical tests method precision is high, need at the complicated early stage to measured objectReason process and detection time-consuming, it is impossible to the need for meeting quick detection.Fast detection method development in recent years is very fast, such as enzyme levelMethod, immune fast detection method, biosensor technology etc., but these are the problems such as there is also low sensitivity or high cost.AndThree of the above detection mode cannot realize that real quick and lossless agricultural chemicals speed is surveyed.
The content of the invention
It is an object of the invention to provide a kind of vegetable pesticide residue detection means, to solve to be proposed in above-mentioned background technologyProblem.
To achieve the above object, the present invention provides following technical scheme：A kind of vegetable pesticide residue detection means, including inspectionSurvey portion and Handheld Division, test section downside are provided with opening, are provided with arc accommodating chamber inside the test section, the accommodating chamber andOpen communication, the accommodating chamber top is provided with photodetector, and accommodating chamber side wall is provided with lasing light emitter, and the lasing light emitter setsPut in the light for being sent by being radiated at behind opening on the position that the light reflected on measured object can be received by a photoelectric detector, instituteState and be provided with inside Handheld Division single-chip microcomputer and power supply, the photodetector and lasing light emitter are electrically connected with single-chip microcomputer, the monolithicMachine is electrically connected with the power supply, and the Handheld Division outside is provided with display screen and on ＆ off switch, and the display screen is arranged on the upper of on ＆ off switchSide, the display screen and on ＆ off switch are electrically connected with single-chip microcomputer.
Preferably, the lasing light emitter is set to multiple, and each lasing light emitter is on the same plane in the middle part of accommodating chamber,The centre wavelength of the lasing light emitter is between 260nm-360nm, and the centre wavelength of each lasing light emitter is different.
Preferably, the Handheld Division is integrally curved, side processing opposite with display screen is provided with the Handheld DivisionIt is corrugated.
Preferably, the opening is provided with protection glass, and the protection glass is made up of glass material.
Preferably, the Handheld Division bottom is provided with pedestal for placed, and the section of the pedestal for placed is trapezoidal.
Compared with prior art, beneficial effects of the present invention are as follows：
1st, reasonable in design of the present invention, using the principle design of fluorescence spectral measuring, user only needs the hand-held present apparatus will to openMouth is opened switch and can be detected to measured object, easy to operate；And sample need not be prepared, tested vegetables will not be madeInto destruction, test period is short, and the present apparatus is required tester without specialty, and the user for being adapted to all age group uses, and can fitFor each place such as market, supermarket, market of farm produce；
2nd, opening protection glass design, can protect in accommodating chamber be device it is free from the influence of the external environment and destruction；
3rd, the pedestal for placed design of Handheld Division bottom, can make the present apparatus place more convenient in the not used time, take and be also convenient for.
Brief description of the drawings
Fig. 1 is a kind of structural representation of vegetable pesticide residue detection means of the invention；
Fig. 2 is a kind of side view of vegetable pesticide residue detection means of the invention.
In figure：1- test sections, 2- Handheld Divisions, 3- openings, 4- accommodating chambers, 5- photodetectors, 6- lasing light emitters, 7- monolithicsMachine, 8- power supplys, 9- display screens, 10- on ＆ off switches, 11- protection glass, 12- pedestal for placed.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, completeSite preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based onEmbodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not madeEmbodiment, belongs to the scope of protection of the invention.
Fig. 1-2 is referred to, the present invention provides a kind of technical scheme：A kind of vegetable pesticide residue detection means, including detectionPortion 1 and Handheld Division 2, the downside of the test section 1 are provided with opening 3, and the opening 3 is provided with protection glass 11, the protection glass 11By glass material is made, arc accommodating chamber 4 is provided with inside the test section 1, the accommodating chamber 4 is connected with opening 3, the receivingThe top of chamber 4 is provided with photodetector 5, and the side wall of the accommodating chamber 4 is provided with lasing light emitter 6, and the lasing light emitter 6 is arranged on what is sentBy being radiated at behind opening on the position that the light reflected on measured object can be received by photodetector 5, the lasing light emitter 6 sets lightMultiple is set to, and each lasing light emitter 6 is on the same plane at the middle part of accommodating chamber 6, the centre wavelength of the lasing light emitter 6 existsBetween 260nm-360nm, and the centre wavelength of each lasing light emitter 6 is different, and single-chip microcomputer 7 and electricity are provided with inside the Handheld Division 2Source 8, the photodetector 5 and lasing light emitter 6 are electrically connected with single-chip microcomputer 7, and the single-chip microcomputer 7 is electrically connected with power supply 8, describedThe outside of Handheld Division 2 is provided with display screen 9 and on ＆ off switch 10, and the display screen 9 is arranged on the top of on ＆ off switch 10, the display screen 9Be electrically connected with single-chip microcomputer 7 with ＆ off switch 10, the Handheld Division 2 is overall curved, on the Handheld Division 2 be provided with display screen9 opposite sides are processed as corrugated,：The bottom of the Handheld Division 2 is provided with pedestal for placed 12, and the section of the pedestal for placed 12 isIt is trapezoidal.
Operation principle：User holds the Handheld Division 2 and by the opening 3 of test section 1 near vegetables, then presses on ＆ off switch10 make the present apparatus that vegetables are carried out with the detection of persticide residue, and single-chip microcomputer 24 first gathers the data that a lasing light emitter 6 is not switched onAs background spectrum, then open the lasing light emitter 6 of different wave length successively, the light that lasing light emitter 6 is produced through be radiated at behind opening 3 bySurvey on thing, the fluorescence spectrum that the agricultural chemicals remained on measured object is produced is reflexed on photodetector 5, and is become through photodetector 5Single-chip microcomputer 7 is passed to after being changed to electric signal, persticide residue is calculated by the treatment of single-chip microcomputer 7, finally by the residues of pesticidesAmount is transmitted to display screen 9, and is shown on display screen 9 for user's reading.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be withUnderstanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present inventionAnd modification, the scope of the present invention be defined by the appended.