CN104502555A - Portable intelligent fruit and vegetable respiration intensity measuring device and method - Google Patents
Portable intelligent fruit and vegetable respiration intensity measuring device and method Download PDFInfo
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- CN104502555A CN104502555A CN201410824773.1A CN201410824773A CN104502555A CN 104502555 A CN104502555 A CN 104502555A CN 201410824773 A CN201410824773 A CN 201410824773A CN 104502555 A CN104502555 A CN 104502555A
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Abstract
The invention provides a portable intelligent fruit and vegetable respiration intensity measuring device and method. The portable intelligent fruit and vegetable respiration intensity measuring device comprises an air inlet and is characterized in that the air inlet is connected to a first-stage carbon dioxide absorption chamber; the first-stage carbon dioxide absorption chamber is communicated with a second-stage carbon dioxide absorption chamber; the second-stage carbon dioxide absorption chamber is communicated with a buffer chamber; the buffer chamber is communicated with a sample chamber; the sample chamber is communicated with a drying chamber; and the drying chamber is communicated with a measuring and analyzing chamber and is connected to an air outlet. The portable intelligent fruit and vegetable respiration intensity measuring device provided by the invention is capable of measuring the respiration intensity of fruits and vegetables rapidly, simply and conveniently; and in addition, because of integrated design, the portable intelligent fruit and vegetable respiration intensity measuring device is portable and small as well as convenient to carry, and can be applied to various measurement environments.
Description
Technical field
The present invention relates to measurement mechanism field, specifically, relate to a kind of portable intelligent fruits and vegetables respiratory intensity determinator and assay method.
Background technology
The gardening products such as the fruits and vegetables after results remain a lived individuality, are the activity of sustaining life, and must carry out respiration.Respiratory intensity weighs the respiratory important indicator of gardening product such as fruits and vegetables, measures respiratory intensity and can weigh respiratory power, understand postharvest fruit and vegetable physiological status, provides necessary data for low temperature and controlled atmosphere storing and respiration heat calculate.Therefore, when studying or process fruit vegetables storing problem, measuring respiratory intensity is the means often adopted.Respiratory intensity is generally with at a certain temperature, and every kilogram of fruit carbon dioxide milligram number produced of breathing per hour represents.The method being used for measuring respiratory intensity at present mainly contains static method, air-flow method, infrared carbon dioxide analyzer method, vapor-phase chromatography.Static method device is simple, but because carbon dioxide content rising can suppress the respiration of fruits and vegetables in the environment closed, and therefore the result that records of static method is inaccurate.Air-flow method comparatively static method is comparatively accurate, but because needs to adopt alkali liquor absorption to use oxalatimetry again, so be not easy to carry.Infrared carbon dioxide analyzer method improves on the basis of air-flow method, the alkali liquor absorption titration of end is changed into infrared carbon dioxide analysis to measure, but its air inlet section still adopts high-concentration alkali liquor to absorb the method for Carbon Dioxide in Air, is not easy to carry, and there is potential safety hazard.Vapor-phase chromatography result is accurate, and precision is high, but required gas chromatograph involves great expense, and cannot portably use.The immediate data that static method and air-flow method obtain is the amount of titration oxalic acid used, the immediate data that infrared carbon dioxide analyzer and vapor-phase chromatography obtain is carbon dioxide content, that that data all need substitution formula repeatedly to calculate, increase probability of makeing mistakes and also consume analysis time simultaneously, the very first time cannot obtain measurement result.Along with the needs of fruit and vegetable storage and transportation Study on preservation technique and application, need development one badly and be both convenient for carrying, directly can obtain again the intelligent determinator of respiratory intensity result.
Summary of the invention:
The technical problem to be solved in the present invention is to provide a kind of portable intelligent fruits and vegetables respiratory intensity determinator and assay method, is convenient for carrying, simple to operate, intelligence degree is high.
The present invention adopts following technical scheme to realize goal of the invention:
A kind of portable intelligent fruits and vegetables respiratory intensity determinator, comprise air intake opening, it is characterized in that: described air intake opening connects one-level carbon dioxide absorption room, described one-level carbon dioxide absorption room is communicated with described secondary carbon dioxide absorption room, described secondary carbon dioxide absorption room is communicated with surge chamber, and described surge chamber is communicated with sample chamber, and described sample chamber is communicated with hothouse, described hothouse is communicated with determination and analysis room, and described hothouse is connected with gas outlet.
As the further restriction to the technical program, in described sample chamber, be provided with temperature sensor.
As the further restriction to the technical program, described determination and analysis indoor are provided with carbon dioxide detecting element.
As the further restriction to the technical program, described determination and analysis indoor are provided with air pump.
As the further restriction to the technical program, described air pump attended operation panel.
As the further restriction to the technical program, described temperature sensor is all connected microprocessor with carbon dioxide detecting element.
A kind of portable intelligent fruits and vegetables respiratory intensity determinator method, is characterized in that: comprise the steps:
(1) first the fruit of accurately weighing is put into sample chamber, guarantee sealing;
(2) booster air pump runs, and is constantly brought in a steady stream in device by outside air;
(3) concentration of the carbon dioxide of sample chamber when carbon dioxide detecting element detects that device starts, and be recorded in microprocessor;
(4) first outside air enters one-level carbon dioxide absorption room 2 by air intake opening and enters secondary carbon dioxide absorption room 3 again, and the carbon dioxide now in air is all adsorbed by absorbing agent;
(5) enter sample chamber again after entering surge chamber without the air of carbon dioxide, the sample in sample chamber consumes oxygen by respiration and produces carbon dioxide;
(6) gas in sample chamber enters the hothouse being placed with drying agent and removes the water vapor wherein contained, and then enters determination and analysis room 7;
(7) plant running is after 30 minutes, and carbon dioxide detecting element again detects the gas concentration lwevel in gas and is recorded in microprocessor;
(8) in whole testing process, the temperature in micro processor record per minute sample chamber, end to be detected calculates medial temperature afterwards automatically;
(9) the various data obtained are substituted in pre-set programs the respiratory intensity calculating fruits and vegetables under a certain temperature environment by microprocessor;
(10) detected gas is discharged by gas outlet 8 through air pump.
As the further restriction to the technical program, the respiratory intensity computing formula of the fruits and vegetables in described step (8) is:
Q: sample respiratory intensity, unit mg/kg/h; S: air pump flow, units/ml/min; C
0: the initial gas concentration lwevel in sample chamber, unit μ l/L; C: run sample chamber gas concentration lwevel after 30 minutes, unit μ l/L; M: sample quality, unit g.
Compared with prior art, advantage of the present invention and good effect are: the respiratory intensity of the mensuration fruit and vegetable food that fruits and vegetables respiratory intensity determinator of the present invention can be fast and convenient, this device adopts the design of integration, and equipment is light to be small and exquisitely easy to carry, and can be applicable to various mensuration environment.This device adopts microcontroller to preset mensuration program, and enroll data analysis formula in advance, operating personnel only need input example weight can obtain sample respiratory intensity measured value, avoids the calculating of operating personnel's complexity, decreases the probability of makeing mistakes.The present invention is simple to operate, intelligence degree is high, estimating precision is high, avoids expensive analytical instrument and complicated running program, improves the accuracy of work efficiency and measurement result.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is structure schematic diagram of the present invention.
In figure, 1 is air intake opening, and 2 is one-level carbon dioxide absorption room, 3 is secondary carbon dioxide absorption room, and 4 is surge chamber, and 5 is sample chamber, 6 is hothouse, 7 is determination and analysis room, and 8 is gas outlet, and 9 is control panel, 10 is temperature sensor, 11 is carbon dioxide detecting element, and 12 is air pump, and 13 is microprocessor.
Embodiment:
Below in conjunction with embodiment, further illustrate the present invention.
See Fig. 1 and Fig. 2, the present invention includes air intake opening, air intake opening 1 described in 1 connects one-level carbon dioxide absorption room 2, described one-level carbon dioxide absorption room 2 is communicated with described secondary carbon dioxide absorption room 1, described secondary carbon dioxide absorption room 3 is communicated with surge chamber 2, and described surge chamber 2 is communicated with sample chamber 5, and described sample chamber 5 is communicated with hothouse 6, described hothouse 6 is communicated with determination and analysis room 7, and described hothouse 6 is connected with gas outlet 8.
Temperature sensor 10 is provided with in described sample chamber 5.
Carbon dioxide detecting element 2 is provided with in described determination and analysis room 7.
Air pump 12 is provided with in described determination and analysis room 7.
Described air pump 12 attended operation panel 9.
Described temperature sensor 10 is all connected microprocessor 13 with carbon dioxide detecting element 2.
Be filled with carbon-dioxide absorbent in described one-level carbon dioxide absorption room 2 and secondary carbon dioxide absorption room 3, in order to absorb the carbon dioxide in air, make to enter in the air of sample chamber 5 no longer containing carbon dioxide.Equipment can arrange one or more carbon dioxide absorption room, and carbon dioxide absorption number of chambers amount decides according to the amount of the volume of each absorption chamber and filling adsorbent.One-level carbon dioxide absorption room 2 is communicated with air by air intake opening 1, has connecting hole to be connected between different absorption chamber.
Described surge chamber 4 is for separating sample chamber 5 and carbon dioxide absorption room, and avoiding carbon dioxide absorber to enter sample chamber 5 affects measurement result, also avoids the carbon dioxide produced in sample chamber 5 to be affected measurement result by sorbent simultaneously.Inject a certain amount of distilled water in surge chamber 4, with isolated carbon dioxide absorption room and sample chamber 5, can be used for pick-up unit simultaneously and whether leak gas.After surge chamber 4 is positioned at afterbody carbon dioxide absorption room 3, be connected with secondary carbon dioxide absorption room 3 by connecting pipe, connecting pipe need insert below liquid level.Surge chamber 4 is connected with sample chamber 5 by connecting hole, and connecting hole should more than liquid level.
Sample chamber, for placing testing sample, is put into be measured in described sample chamber 5 after samples weighing.Sample chamber 5, with openable gland bonnet, needs after gland bonnet fastening to be hedged off from the outer world completely, ensures that in sample chamber 5, gas and outside air do not exchange.Sealing means can adopt water seal, also can adopt the O-ring seal of the elastic material such as silica gel ring, rubber ring and coordinate buckle to seal.Be provided with temperature sensor 10 in sample chamber 5, for working sample room 5 temperature and sample temperature, usual sample temperature should be consistent with sample chamber 5 temperature.The Temperature numerical that temperature sensor 10 measures is transferred in the microprocessor of determination and analysis room for carrying out temperature adjustmemt to final analysis result.
Drying agent is filled with, for absorbing the moisture in tested gas in described hothouse 6.Because moisture in gas can produce harmful effect to the mensuration of carbon dioxide detecting element, therefore tested gas needs before entering determination and analysis room to carry out drying process, to remove the moisture in gas.
Be provided with air pump 12, carbon dioxide detecting element 12, microprocessor 13 in described determination and analysis room 7, determination and analysis room 7 is externally connected to control panel 9.Air pump 12, for providing power for the gas circuit of whole device, makes outside air enter carbon dioxide absorption room, surge chamber, sample chamber, hothouse and determination and analysis room step by step by air intake opening, discharges eventually through gas outlet 8.Carbon dioxide detecting element 11 is in order to detect the content of carbon dioxide in gas.Control panel 9 is in order to input the control signals such as testing sample weight, dispensing device operation and stopping.
Present invention also offers a kind of portable intelligent fruits and vegetables respiratory intensity determinator and assay method, during operation, first the fruit of accurately weighing (m gram) is put into sample chamber 5, build sample chamber 5 upper cover, guarantee sealing.Then by the start key starter gear on guidance panel 9.Air pump 12 runs, and is constantly brought in a steady stream in device by outside air.Concentration (the C of sample chamber carbon dioxide when carbon dioxide detecting element 12 detects that device starts
0μ l/L), and be recorded in microprocessor 13.First outside air enters one-level carbon dioxide absorption room 2 by air intake opening 1, then enters secondary carbon dioxide absorption room 3, and the carbon dioxide now in air is all adsorbed by absorbing agent.Sample chamber 5 is entered again after entering surge chamber 4 without the air of carbon dioxide.Sample in sample chamber 5 consumes oxygen by respiration and produces carbon dioxide.Gas in sample chamber 5 enters the hothouse 6 being placed with drying agent and removes the water vapor wherein contained, and then enters determination and analysis room 7.Plant running is after 30 minutes, and carbon dioxide detecting element again detects the gas concentration lwevel (C μ l/L) in gas and is recorded in micro processor 13.Detected gas is discharged by gas outlet 8 through air pump.In whole testing process, the temperature in microprocessor 13 record per minute sample chamber, end to be detected calculates medial temperature (T DEG C) afterwards automatically.The various data obtained are substituted in pre-set programs the respiratory intensity calculating fruits and vegetables under a certain temperature environment by microprocessor 13.
Sample respiratory intensity computing formula is:
Q: sample respiratory intensity (mg/kg/h); S: air pump flow (ml/min); C
0: the initial gas concentration lwevel in sample chamber (μ l/L); C: run sample chamber gas concentration lwevel (μ l/L) after 30 minutes; M: sample quality (g).
Above are only the present invention's preferably a kind of feasible program, and the protection domain of unrestricted this patent, all application patent specification and the change of the equivalent structure done by accompanying drawing, within the protection domain being all included in this patent.
Claims (8)
1. a portable intelligent fruits and vegetables respiratory intensity determinator, comprise air intake opening, it is characterized in that: described air intake opening connects one-level carbon dioxide absorption room, described one-level carbon dioxide absorption room is communicated with described secondary carbon dioxide absorption room, described secondary carbon dioxide absorption room is communicated with surge chamber, and described surge chamber is communicated with sample chamber, and described sample chamber is communicated with hothouse, described hothouse is communicated with determination and analysis room, and described hothouse is connected with gas outlet.
2. portable intelligent fruits and vegetables respiratory intensity determinator according to claim 1, is characterized in that: be provided with temperature sensor in described sample chamber.
3. portable intelligent fruits and vegetables respiratory intensity determinator according to claim 2, is characterized in that: described determination and analysis indoor are provided with carbon dioxide detecting element.
4. portable intelligent fruits and vegetables respiratory intensity determinator according to claim 1, is characterized in that: described determination and analysis indoor are provided with air pump.
5. portable intelligent fruits and vegetables respiratory intensity determinator according to claim 4, is characterized in that: described air pump attended operation panel.
6. portable intelligent fruits and vegetables respiratory intensity determinator according to claim 4, is characterized in that: described temperature sensor is all connected microprocessor with carbon dioxide detecting element.
7. a portable intelligent fruits and vegetables respiratory intensity determinator method, is characterized in that: comprise the steps:
First the fruit of accurately weighing is put into sample chamber, guarantee sealing;
Booster air pump runs, and is constantly brought in a steady stream in device by outside air;
The concentration of the carbon dioxide of sample chamber when carbon dioxide detecting element detects that device starts, and be recorded in microprocessor;
First outside air enters one-level carbon dioxide absorption room 2 by air intake opening and enters secondary carbon dioxide absorption room 3 again, and the carbon dioxide now in air is all adsorbed by absorbing agent;
Enter sample chamber again after entering surge chamber without the air of carbon dioxide, the sample in sample chamber consumes oxygen by respiration and produces carbon dioxide;
Gas in sample chamber enters the hothouse being placed with drying agent and removes the water vapor wherein contained, and then enters determination and analysis room 7;
Plant running is after 30 minutes, and carbon dioxide detecting element again detects the gas concentration lwevel in gas and is recorded in microprocessor;
In whole testing process, temperature in micro processor record per minute sample chamber, end to be detected calculates medial temperature (T DEG C) afterwards automatically, and the various data obtained are substituted in pre-set programs the respiratory intensity calculating fruits and vegetables under a certain temperature environment by microprocessor;
Detected gas is discharged by gas outlet through air pump.
8. portable intelligent fruits and vegetables respiratory intensity determinator method according to claim 7, is characterized in that: the respiratory intensity computing formula of the fruits and vegetables in described step (8) is:
Q: sample respiratory intensity, unit mg/kg/h; S: air pump flow, units/ml/min; C
0: the initial gas concentration lwevel in sample chamber, unit μ l/L; C: run sample chamber gas concentration lwevel after 30 minutes, unit μ l/L; M: sample quality, unit g.
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Cited By (6)
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| CN105842185A (en) * | 2016-05-31 | 2016-08-10 | 华中农业大学 | Device and method for detecting respiration of chicken eggs |
| CN108008091A (en) * | 2017-10-20 | 2018-05-08 | 北京农学院 | Dynamic fruits and vegetables respiration rate measurement instrument |
| CN109094858A (en) * | 2017-06-21 | 2018-12-28 | 旭化成株式会社 | Package body, save set and the store method of fruits and vegetables |
| CN110554157A (en) * | 2019-09-12 | 2019-12-10 | 中国农业大学 | device and method for measuring postharvest physiological parameters of fruits and vegetables |
| CN112114097A (en) * | 2020-09-22 | 2020-12-22 | 刘骏 | Method for identifying difference of storage tolerance among grape varieties |
| CN114994263A (en) * | 2022-07-15 | 2022-09-02 | 华中农业大学 | Fruit and vegetable respiration physiology measuring device |
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| CN104502555B (en) | 2016-04-20 |
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