CN204422554U - A kind of portable remains of pesticide detector based on micro-fluidic chip - Google Patents
A kind of portable remains of pesticide detector based on micro-fluidic chip Download PDFInfo
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- CN204422554U CN204422554U CN201520141958.2U CN201520141958U CN204422554U CN 204422554 U CN204422554 U CN 204422554U CN 201520141958 U CN201520141958 U CN 201520141958U CN 204422554 U CN204422554 U CN 204422554U
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Abstract
The utility model discloses a kind of portable remains of pesticide detector based on micro-fluidic chip, comprise one-chip computer module and the micro-fluidic chip module be connected with one-chip computer module respectively, sample collection module, Photoelectric Detection module, remote communication module, display, charger; Described micro-fluidic chip module comprises air deflector, horizontal micro-fluidic chip and heating plate; Described air deflector comprises relay, armature, base plate, support, Flexible Connector and pressure head control circuit, and armature is provided with pressure head, controls the pressing of film on air plenum or unclamp by the break-make of pressure head control circuit; Described micro-fluidic chip comprise microchannel connect sample holes, enzyme level reaction chamber, sensing chamber, air plenum, sample holes and sample collection model calling, sensing chamber is placed in Photoelectric Detection module, and air plenum is placed in below pressure head.The utility model can detect agricultural chemicals residual on fruits and vegetables and immediately share result to service platform whenever and wherever possible, convenient, efficient.
Description
Technical field
The utility model relates to remains of pesticide detection technique field, specifically refers to a kind of portable remains of pesticide detector based on micro-fluidic chip.
Background technology
Along with the continuous quickening of economic globalization process, food-safety problem has become a global problem.Because of operation lack of standardization, supervise the factor such as the ineffective end that causes remains of pesticide on fruits and vegetables to exceed standard and the event causing eater that acute poisoning occurs is appeared in the newspapers repeatly.At present, fruit and vegetable surfaces remains of pesticide is based on organophosphorus pesticide and carbamate chemicals for agriculture.People to the understanding of fruit and vegetable surfaces remains of pesticide situation, or rely on the sampling observation report of specialized department, or use agricultural chemicals quick measuring card to be undertaken estimating sentencing by human eye.The sampling observation very flexible of specialized department, testing result are ageing low, can not adapt to carry out whenever and wherever possible detecting and know the needs of result; The use of agricultural chemicals quick measuring card is comparatively large by the impact of human factor, testing result can referential low.
Micro-fluidic chip, also known as chip lab (Lab on a Chip), refers to a kind of biological or chemical laboratory built on the chip of a piece several square centimeters.It makes the component of micro-/ nano magnitude respectively the basic operation unit such as reaction, separation, cultivation, sorting, detection involved in biological and chemical field, be integrated on the chip of a piece very little, network is formed by microchannel, whole system is run through, in order to realize the various functions of standard biologic or chemical laboratory with controlled fluid.Because microfluidic chip technology has, sample size is little, integrated level is high, easily realize Automated condtrol and high throughput analysis, and the sample analysis making to carry out biochemical reaction operation on micro-fluidic chip more conventional is more convenient, quick, with low cost.If portable instrumentation and micro-fluidic chip can be integrated, will greatly reduce the volume of detection system, make scene, fast and accurately detection become possibility.
On the other hand, developing rapidly along with network technology, shares the shortcut becoming people's obtaining information.The Information Sharing known is become Internet resources by the people of different geographical, gets final product bamboo telegraph.
Therefore, need badly and a kind of portable remains of pesticide detector based on micro-fluidic chip is provided, can whenever and wherever possible agricultural chemicals residual on fruits and vegetables be detected and immediately be shared result to service platform, both public's quick obtaining information had been conducive to, be conducive to again the unified management of supervision department, also help constraint production and operation behavior, convenient, efficient.
Utility model content
The purpose of this utility model is to provide a kind of portable remains of pesticide detector based on micro-fluidic chip, can whenever and wherever possible agricultural chemicals residual on fruits and vegetables be detected and immediately be shared result to service platform, both public's quick obtaining information had been conducive to, be conducive to again the unified management of supervision department, also help constraint production and operation behavior, convenient, efficient.
The utility model is achieved through the following technical solutions: a kind of portable remains of pesticide detector based on micro-fluidic chip, comprises one-chip computer module and the micro-fluidic chip module be connected with one-chip computer module respectively, sample collection module, Photoelectric Detection module, remote communication module, display, charger; Described micro-fluidic chip module comprises air deflector, horizontal micro-fluidic chip and heating plate, and heating plate to be placed in below micro-fluidic chip and to be connected with one-chip computer module; Described air deflector comprises relay, armature, base plate, support, Flexible Connector and pressure head control circuit, and the relay connecting pressure head control circuit is placed in above armature; The middle part of described armature is hinged on above base plate by support, and one end is connected with base plate elasticity by Flexible Connector, and the one end away from Flexible Connector is free end, and the bottom surface of free end is provided with pressure head; Described micro-fluidic chip comprises microchannel and the sample holes be connected successively by microchannel, enzyme level reaction chamber, sensing chamber, air plenum, sample holes and sample collection model calling, enzyme level reaction chamber internal fixtion has biochemical reaction reagent, sensing chamber is placed in Photoelectric Detection module, and air plenum is placed between pressure head and base plate and pressure head is positioned at directly over air plenum.
Inhibiting AChE is a kind of method generally used in current Fast Determination of Pesticide Residue, its cardinal principle is as follows: organophosphorus and carbamate chemicals for agriculture are nervous system acetylcholine ester enzyme inhibitor altogether, there is high inhibition effect to acetylcholinesterase and with developer, the change that biochemical chromogenic reaction causes absorbance can occur, there is certain relation with the concentration of residual organophosphorus and carbamate chemicals for agriculture in absorbance, and the variable of absorbance is measured by photoelectric effect.In enzyme assay, absorbance is along with passage of time is ever-increasing, by the test absorbance of sample and the slope of time curve, can calculate inhibiting rate.Therefore, agricultural chemicals target enzymes can be utilized---acetylcholinesterase (AChE) downtrod degree is to detect Organophosphorus and carbamate pesticides class agricultural chemicals.
The utility model is extracted by the print of sample collection module to fruits and vegetables epidermis to be detected and obtains sample liquid, and sample liquid transfers reactant liquor to after the sample holes of micro-fluidic chip enters enzyme level reaction chamber and biochemical reaction reagent carries out enzyme level and chromogenic reaction.Reactant liquor enters sensing chamber, by Photoelectric Detection module, its absorbance is detected, the data detected are sent to one-chip computer module and carry out analyzing and the testing result that obtains remains of pesticide, testing result one carries out scene by display to export, and two is that the service centre being sent to far-end by remote communication module carries out gathering, stores or unified issue etc.Charger is connected with one-chip computer module, provides operating voltage by one-chip computer module to micro-fluidic chip module, sample collection module, Photoelectric Detection module, remote communication module, display.Described biochemical reaction reagent comprises the acetylcholinesterase carrying out enzyme level reaction and the acetyl cholinesterase iodide promoting chromogenic reaction.
Described one-chip computer module comprises microprocessing unit, data storage cell, data transmission unit, temperature conditioning unit, timing unit and multiple interface.Microprocessing unit is used for computational analysis and programmed control; Data storage cell is used for the storage of data; Data transmission unit is used for the transmission of A/D conversion and internal data; Temperature conditioning unit controls for the temperature of heating plate; Described timing unit is used for the Split Time in multiple stage; Described interface is used for the connection of the communication of inner unit and one-chip computer module and sample collection module, Photoelectric Detection module, remote communication module, display, charger.
Described micro-fluidic chip is double-decker, and upper strata is cover plate, and lower floor is substrate, and upper strata cover plate is provided with the film of flexible arc convex in the position of corresponding air plenum.Described micro-fluidic chip material be macromolecule polymer material, comprise polymethylmethacrylate, polycarbonate, dimethyl silicone polymer, Polyvinylchloride, polystyrene etc., can be that same material is prepared from, the heterozygosis chip that also can be made up of unlike material, chip is single use.Described micro-fluidic chip is existing product and improvement of the present utility model does not lie in this yet, therefore repeats no more.
The pressure head control circuit be connected with relay in described air deflector is in normally open.When pressure head control circuit is in open-circuit condition, relay separates with armature, and Flexible Connector is in by the state compressed, and the pressure head of the free end of armature is resisted against on base plate; Applying external force to Flexible Connector further causes Flexible Connector to be compressed further, and armature rotates around its jointed shaft with support, is positioned between pressure head and base plate by the position of the air plenum of micro-fluidic chip aligning pressure head; Remove external force, pressure head causes the gas in air plenum to be discharged by the film being pressed in air plenum.When pressure head control circuit is in channel status, the free end of relay adhesive armature, pressure head disappears to the pressing of air plenum, and according to inside and outside differential pressure, the reactant liquor of enzyme level reaction chamber is drained to the detection of sensing chamber's wait Photoelectric Detection module.
Described heating plate is placed in the below of micro-fluidic chip.According to the requirement of inhibiting AChE, enzyme level reaction fully need react 3 ~ 10 minutes under 37 DEG C of constant temperatures.The utility model carries out temperature control by the temperature conditioning unit in one-chip computer module to heating plate, makes micro-fluidic chip keep the temperature constant state of 37 DEG C; By the timing unit in one-chip computer module, enzyme level reaction is carried out to timing and controlled pressure head control circuit by microprocessing unit, after the enzyme level reaction time terminates, the conducting of pressure head control circuit, the reactant liquor of enzyme level reaction chamber is drained to sensing chamber.
Described sample collection module is used for the collection of standardization sample liquid.In sample collection process, only print to be measured needs manually obtain and place, other process automations complete, and the ratio of print and extract and reaction time control by setup parameter by one-chip computer module, guarantee the regulation and standardization of sampling process, systematization.
Described Photoelectric Detection module detects the absorbance of reactant liquor in sensing chamber, and data transmission unit testing result being sent to one-chip computer module carries out A/D conversion, and carries out computational analysis by microprocessing unit and obtain result.
The result that scene obtains by described remote communication module is sent to the service centre of far-end by network.How the sampling results of multi items can be pooled to service centre and carries out arranging, stores or unifiedly to issue, both be conducive to the public grasp the situation of neighbouring fruit-vegetable pesticide residues and select quality-assured food to buy, be conducive to again supervision department obtain market information in time and carry out pool specification and unified management, also help behavior such as the constraint production of fruits and vegetables supplier, the operation of dealer etc.
The utility model is based on microfluidic chip technology, utilize the enzyme level of solution to react, biochemical chromogenic reaction and absorbance detection techniques, by network technology, and set up sample collection module and air deflector, by sampling, detect, analyze, feed back, share and be integrated in that portable set is disposable to be completed, realize the scene of fruit and vegetable surfaces remains of pesticide, change detection is fast and automatically shared with testing result, both public's quick obtaining information had been conducive to, be conducive to again the unified management of supervision department, also help constraint production and operation behavior, convenient, efficient.
Further, described sample collection module comprises weighing apparatus, sustained-release liquid adds cylinder and abstraction pool; Described sustained-release liquid adds cylinder and comprises micro-cylinder, the first Micropump, first micro-valve and the first microtubule, and the first Micropump is arranged on the outlet end of micro-with first micro-valve and is connected with the liquid feeding end of abstraction pool by the first microtubule; Described abstraction pool comprises extraction cell, the second Micropump, second micro-valve and the second microtubule, and the second Micropump is arranged on the outlet end of extraction cell with second micro-valve and is connected with the sample holes of micro-fluidic chip by the second microtubule; Described weighing apparatus, the first Micropump, first micro-valve, the second Micropump, second micro-valve are all connected with one-chip computer module.
Described weighing apparatus is treated test sample skin and is carried out precision measurement, measurement result is sent to microprocessing unit and data storage cell by the data transmission unit of one-chip computer module, and one-chip computer module analyzes according to the standard proportional of setting to be needed the sustained-release liquid additive capacity of interpolation and instruction is sent to sustained-release liquid to add cylinder.A certain amount of sustained-release liquid is stored in micro-cylinder of described sustained-release liquid interpolation cylinder, after receiving instruction, the first Micropump starts and opens first micro-valve, the sustained-release liquid of specified amount is added to extraction cell by the first microtubule, in extraction cell, treats that test sample skin and sustained-release liquid extract by the extraction time of setting.This process carries out timing by the timing unit in one-chip computer module, and after timing terminates, the second Micropump starts and opens second micro-valve to be introduced the sample holes of micro-fluidic chip by extract by the second microtubule and detect.
The utility model needs maintenance level in use, and one is the weighing unit facilitating weighing apparatus, and two is be beneficial to the drainage in microtubule or microchannel.Described sustained-release liquid is phosphate buffer or borate buffer solution.
Further, described Photoelectric Detection module comprises laser diode, optical filtering, silicon photocell and amplifying circuit, laser diode, optical filtering, sensing chamber, silicon photocell are that a line is arranged, silicon photocell is connected with amplifying circuit, and the laser that laser diode is launched is filtered again through the surface of the reactant liquor directive silicon photocell in sensing chamber by optical filtering.
In the utility model, Photoelectric Detection module comprises laser diode, optical filtering, silicon photocell and amplifying circuit, the light that laser diode sends becomes the monochromatic light of wavelength 300-500nm after optical filtering filters, the surface of directive silicon photocell after the reactant liquor of monochromatic light penetration-detection room, silicon photocell exports corresponding electric signal according to the light intensity received, the data transmission unit that electric signal is sent to one-chip computer module after amplifying circuit amplifies carries out A/D conversion, stored by data storage cell again, wait for calling of microprocessing unit.The electric signal of described silicon photocell gathered by the interval time of setting, and a collection of reactant liquor carries out analysis and calculation by microprocessing unit, draws the inhibiting rate of this batch of reactant liquor after gathering the numerical value of multiple electric signal conversion.
Further, described air plenum comprises the first air plenum and the second air plenum, and sample holes, enzyme level reaction chamber, sensing chamber, the first air plenum, the second air plenum are connected successively by microchannel; Described air deflector comprises the first air deflector and the second air deflector that are arranged side by side, and the first air plenum is placed in the first air deflector, and the second air plenum is placed in the second air deflector.
In the utility model after the reacted extract of abstraction pool enters the sample holes of micro-fluidic chip, enzyme level reaction chamber can be entered because of factors such as fluid flow characteristics, liquid level difference, pressure differentials, but this process is very slow.In order to save time, raise the efficiency, arrange the first air plenum and the second air plenum two air plenums, the first air plenum is placed in the first air deflector, and the second air plenum is placed in the second air deflector.Described first air deflector comprises the first relay, the first armature, the first base plate, the first support, the first Flexible Connector and the first pressure head control circuit, and the first relay connecting the first pressure head control circuit is placed in above the first armature; The middle part of described first armature is hinged on above the first base plate by the first support, and one end is connected with the first base plate elasticity by the first Flexible Connector, and the one end away from the first Flexible Connector is free end, and the bottom surface of free end is provided with the first pressure head.Described second air deflector comprises the second relay, the second armature, the second base plate, the second support, the second Flexible Connector and the second pressure head control circuit, and the second relay connecting the second pressure head control circuit is placed in above the second armature; The middle part of described second armature is hinged on above the second base plate by the second support, and one end is connected with the second base plate elasticity by the second Flexible Connector, and the one end away from the second Flexible Connector is free end, and the bottom surface of free end is provided with the second pressure head.
Install before micro-fluidic chip prepares to detect, the first pressure head by the film being pressed in the first air plenum and the second pressure head by being pressed on the film of the second air plenum.When extract enters sample holes, the microprocessing unit of one-chip computer module controls the first pressure head control circuit conducting, the free end of the first relay adhesive first armature, first pressure head disappears to the pressing of film on the first air plenum, and the extract at sample holes place enters enzyme level reaction chamber fast along microchannel rapidly; After the time of enzyme level reaction setting terminates, the microprocessing unit of one-chip computer module controls the second pressure head control circuit conducting, the free end of the second relay adhesive second armature, second pressure head disappears to the pressing of film on the second air plenum, and the reactant liquor of enzyme level reaction chamber enters the detection that sensing chamber waits for Photoelectric Detection module fast along microchannel.This process, makes testing process be connected more smooth and effectively reduce detection time, increases work efficiency.
Further, described base plate is also provided with stopper slot, and micro-fluidic chip embeds in stopper slot.
The utility model arranges stopper slot on base plate, facilitates the quick position of disposable micro-fluidic chip to install, and guarantees that pressure head can accurately by being pressed on the film of air plenum.The setting of stopper slot can shorten the time of accurately installing when changing micro-fluidic chip, also can improve the stability of system.
Further, described remote communication module comprises WIFI communication module, GPRS communication module and 3G/4G communication module.
Adapt to different network environments by multiple remote communication module such as WIFI communication module, GPRS communication module and 3G/4G communication modules in the utility model, testing result is sent to fast the user side of far-end.
Further, described one-chip computer module comprises 89S51 singlechip chip.
Described 89S51 singlechip chip can meet in the utility model to one-chip computer module, there is data processing, data store, data transmission, temperature control, calendar scheduling requirement, and it is low in energy consumption, frequency of operation is high, stable performance and cheap.
Further, described display is liquid crystal display.
Further, described Flexible Connector is spring.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is based on the characteristic of micro-fluidic chip, utilizes one-chip computer module automatically to control, and makes to sample in remains of pesticide testing process, detects, analyzes, feedback, shares integrated disposablely in one apparatus to complete, convenient, efficient.
(2) the utility model coordinates micro-fluidic chip to use by arranging air deflector, and the pressure head control circuit of air deflector is controlled by one-chip computer module, and the auxiliary standardization realizing testing process, testing result reliability is high.
(3) the utility model is by arranging sample collection module, and make the sampling process also operable automatically of fruit and vegetable surfaces remains of pesticide, artificial interference factor is few, detects more convenient and efficient.
Accompanying drawing explanation
Fig. 1 is front schematic view of the present utility model.
Fig. 2 is positive view of the present utility model.
Fig. 3 is the structural representation of air deflector.
Fig. 4 is the schematic diagram of pressure head pressing air plenum when pressure head control circuit disconnects in air deflector.
Fig. 5 is the schematic diagram of relay absorption armature when pressure head control circuit is communicated with in air deflector.
In Fig. 6, a is the micro-fluidic chip arranging an air plenum, and b is the schematic diagram that the micro-fluidic chip of a signal is arranged in one group of air deflector.
In Fig. 7, a is the micro-fluidic chip arranging two air plenums, and b is the schematic diagram that the micro-fluidic chip of a signal is arranged in two groups of air deflectors.
Wherein: 1-one-chip computer module, 2-micro-fluidic chip module, 21-air deflector, 211-the first air deflector, 212-the second air deflector, 2101-relay, 2102-armature, 2103-pressure head, 2104-base plate, 2105-stopper slot, 2106-support, 2107-Flexible Connector, 2108-pressure head control circuit, 22-micro-fluidic chip, 221-sample holes, 222-enzyme level reaction chamber, 223-sensing chamber, 224-air plenum, 2241-the first air plenum, 2242-the second air plenum, 225-microchannel, 23-heating plate, 3-sample collection module, 31-weighing apparatus, 32-sustained-release liquid adds cylinder, 33-abstraction pool, 4-Photoelectric Detection module, 5-remote communication module, 6-display, 7-charger.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1:
A kind of portable remains of pesticide detector based on micro-fluidic chip 22 of the present embodiment, as shown in figures 1 to 6, mainly be achieved through the following technical solutions: a kind of portable remains of pesticide detector based on micro-fluidic chip 22, comprise one-chip computer module 1 and the micro-fluidic chip module 2, sample collection module 3, Photoelectric Detection module 4, remote communication module 5, display 6, the charger 7 that are connected with one-chip computer module 1 respectively; Described micro-fluidic chip module 2 comprises air deflector 21, horizontal micro-fluidic chip 22 and heating plate 23, and heating plate 23 to be placed in below micro-fluidic chip 22 and to be connected with one-chip computer module 1; Described air deflector 21 comprises relay 2101, armature 2102, base plate 2104, support 2106, Flexible Connector 2107 and pressure head control circuit 2108, and the relay 2101 connecting pressure head control circuit 2108 is placed in above armature 2102; The middle part of described armature 2102 is hinged on above base plate 2104 by support 2106, and one end is connected with base plate 2104 elasticity by Flexible Connector 2107, and the one end away from Flexible Connector 2107 is free end, and the bottom surface of free end is provided with pressure head 2103; Described micro-fluidic chip 22 comprises microchannel 225 and the sample holes 221 be connected successively by microchannel 225, enzyme level reaction chamber 222, sensing chamber 223, air plenum 224, sample holes 221 is connected with sample collection module 3, enzyme level reaction chamber 222 internal fixtion has biochemical reaction reagent, sensing chamber 223 is placed in Photoelectric Detection module 4, and air plenum 224 is placed between pressure head 2103 and base plate 2104 and pressure head 2103 is positioned at directly over air plenum 224.
Embodiment 2:
The present embodiment does further optimization on above-described embodiment basis, and further, described sample collection module 3 comprises weighing apparatus 31, sustained-release liquid adds cylinder 32 and abstraction pool 33; Described sustained-release liquid adds cylinder 32 and comprises micro-cylinder, the first Micropump, first micro-valve and the first microtubule, and the first Micropump and first micro-valve are arranged on the outlet end of micro-and are connected by the liquid feeding end of the first microtubule with abstraction pool 33; Described abstraction pool 33 comprises extraction cell, the second Micropump, second micro-valve and the second microtubule, and the second Micropump and second micro-valve are arranged on the outlet end of extraction cell and are connected with the sample holes 221 of micro-fluidic chip 22 by the second microtubule; Described weighing apparatus 31, first Micropump, first micro-valve, the second Micropump, second micro-valve are all connected with one-chip computer module 1.Other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 3:
The present embodiment does further optimization on above-described embodiment basis, further, described Photoelectric Detection module 4 comprises laser diode, optical filtering, silicon photocell and amplifying circuit, laser diode, optical filtering, sensing chamber 223, silicon photocell are that a line is arranged, silicon photocell is connected with amplifying circuit, and the laser that laser diode is launched is filtered again through the surface of the reactant liquor directive silicon photocell in sensing chamber 223 by optical filtering.Other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 4:
The present embodiment does further optimization on above-described embodiment basis, as shown in Figure 7, further, described air plenum 224 comprises the first air plenum 2241 and the second air plenum 2242, and sample holes 221, enzyme level reaction chamber 222, sensing chamber 223, first air plenum 2241, second air plenum 2242 are connected successively by microchannel 225; Described air deflector 21 comprises the first air deflector 211 of being arranged side by side and the second air deflector 212, first air plenum 2241 and is placed in the first air deflector 211, second air plenum 2242 and is placed in the second air deflector 212.Other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 5:
The present embodiment does further optimization on above-described embodiment basis, and further, described base plate 2104 is also provided with stopper slot 2105, and micro-fluidic chip 22 embeds in stopper slot 2105.Other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 6:
The present embodiment does further optimization on above-described embodiment basis, and further, described remote communication module 5 comprises WIFI communication module, GPRS communication module and 3G/4G communication module.Other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 7:
The present embodiment does further optimization on above-described embodiment basis, and further, described one-chip computer module 1 comprises 89S51 singlechip chip.Other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 8:
The present embodiment does further optimization on above-described embodiment basis, and further, described display 6 is liquid crystal display.Other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 9:
The present embodiment does further optimization on above-described embodiment basis, and further, described Flexible Connector 2107 is spring.Other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (9)
1. based on a portable remains of pesticide detector for micro-fluidic chip (22), it is characterized in that: comprise one-chip computer module (1) and the micro-fluidic chip module (2), sample collection module (3), Photoelectric Detection module (4), remote communication module (5), display (6), the charger (7) that are connected with one-chip computer module (1) respectively; Described micro-fluidic chip module (2) comprises air deflector (21), horizontal micro-fluidic chip (22) and heating plate (23), and heating plate (23) is placed in micro-fluidic chip (22) below and is connected with one-chip computer module (1); Described air deflector (21) comprises relay (2101), armature (2102), base plate (2104), support (2106), Flexible Connector (2107) and pressure head control circuit (2108), and the relay (2101) connecting pressure head control circuit (2108) is placed in armature (2102) top; The middle part of described armature (2102) is hinged on base plate (2104) top by support (2106), one end is connected with base plate (2104) elasticity by Flexible Connector (2107), one end away from Flexible Connector (2107) is free end, and the bottom surface of free end is provided with pressure head (2103); Described micro-fluidic chip (22) comprises microchannel (225) and the sample holes (221) be connected successively by microchannel (225), enzyme level reaction chamber (222), sensing chamber (223), air plenum (224), sample holes (221) is connected with sample collection module (3), enzyme level reaction chamber (222) internal fixtion has biochemical reaction reagent, sensing chamber (223) is placed in Photoelectric Detection module (4), and air plenum (224) is placed between pressure head (2103) and base plate (2104) and pressure head (2103) is positioned at directly over air plenum (224).
2. one according to claim 1 is based on the portable remains of pesticide detector of micro-fluidic chip (22), it is characterized in that: described sample collection module (3) comprises weighing apparatus (31), sustained-release liquid adds cylinder (32) and abstraction pool (33); Described sustained-release liquid adds cylinder (32) and comprises micro-cylinder, the first Micropump, first micro-valve and the first microtubule, and the first Micropump and first micro-valve are arranged on the outlet end of micro-and are connected by the liquid feeding end of the first microtubule with abstraction pool (33); Described abstraction pool (33) comprises extraction cell, the second Micropump, second micro-valve and the second microtubule, and the second Micropump and second micro-valve are arranged on the outlet end of extraction cell and are connected with the sample holes (221) of micro-fluidic chip (22) by the second microtubule; Described weighing apparatus (31), the first Micropump, first micro-valve, the second Micropump, second micro-valve are all connected with one-chip computer module (1).
3. one according to claim 1 is based on the portable remains of pesticide detector of micro-fluidic chip (22), it is characterized in that: described Photoelectric Detection module (4) comprises laser diode, optical filtering, silicon photocell and amplifying circuit, laser diode, optical filtering, sensing chamber (223), silicon photocell are that a line is arranged, silicon photocell is connected with amplifying circuit, and the laser that laser diode is launched is filtered again through the surface of the reactant liquor directive silicon photocell in sensing chamber (223) by optical filtering.
4. one according to claim 1 is based on the portable remains of pesticide detector of micro-fluidic chip (22), it is characterized in that: described air plenum (224) comprises the first air plenum (2241) and the second air plenum (2242), sample holes (221), enzyme level reaction chamber (222), sensing chamber (223), the first air plenum (2241), the second air plenum (2242) are connected successively by microchannel (225); Described air deflector (21) comprises the first air deflector (211) and the second air deflector (212) that are arranged side by side, and the first air plenum (2241) is placed in the first air deflector (211), and the second air plenum (2242) is placed in the second air deflector (212).
5. one according to claim 1 is based on the portable remains of pesticide detector of micro-fluidic chip (22), it is characterized in that: described base plate (2104) is also provided with stopper slot (2105), and micro-fluidic chip (22) embeds in stopper slot (2105).
6. the one according to claim 1-5 any one, based on the portable remains of pesticide detector of micro-fluidic chip (22), is characterized in that: described remote communication module (5) comprises WIFI communication module, GPRS communication module and 3G/4G communication module.
7. the one according to claim 1-5 any one, based on the portable remains of pesticide detector of micro-fluidic chip (22), is characterized in that: described one-chip computer module (1) comprises 89S51 singlechip chip.
8. the one according to claim 1-5 any one, based on the portable remains of pesticide detector of micro-fluidic chip (22), is characterized in that: described display (6) is liquid crystal display.
9. the one according to claim 1-5 any one, based on the portable remains of pesticide detector of micro-fluidic chip (22), is characterized in that: described Flexible Connector (2107) is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520141958.2U CN204422554U (en) | 2015-03-12 | 2015-03-12 | A kind of portable remains of pesticide detector based on micro-fluidic chip |
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| CN201520141958.2U CN204422554U (en) | 2015-03-12 | 2015-03-12 | A kind of portable remains of pesticide detector based on micro-fluidic chip |
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| CN204422554U true CN204422554U (en) | 2015-06-24 |
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| CN201520141958.2U Expired - Fee Related CN204422554U (en) | 2015-03-12 | 2015-03-12 | A kind of portable remains of pesticide detector based on micro-fluidic chip |
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| CN (1) | CN204422554U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921187A (en) * | 2016-05-23 | 2016-09-07 | 浙江清华长三角研究院 | Micro-fluidic chip for rapid detection of pesticide residues |
| CN108801929A (en) * | 2018-06-26 | 2018-11-13 | 杭州霆科生物科技有限公司 | A kind of smart home that can detect food security |
| CN114152606A (en) * | 2021-12-02 | 2022-03-08 | 武汉新烽光电股份有限公司 | Water quality monitoring device and monitoring system based on micro-flow control disc chip |
-
2015
- 2015-03-12 CN CN201520141958.2U patent/CN204422554U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921187A (en) * | 2016-05-23 | 2016-09-07 | 浙江清华长三角研究院 | Micro-fluidic chip for rapid detection of pesticide residues |
| CN108801929A (en) * | 2018-06-26 | 2018-11-13 | 杭州霆科生物科技有限公司 | A kind of smart home that can detect food security |
| CN114152606A (en) * | 2021-12-02 | 2022-03-08 | 武汉新烽光电股份有限公司 | Water quality monitoring device and monitoring system based on micro-flow control disc chip |
| CN114152606B (en) * | 2021-12-02 | 2023-02-21 | 武汉新烽光电股份有限公司 | Water quality monitoring device and monitoring system based on micro-flow control disc chip |
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