CN110261257A - A kind of method and device determining spherefruit precooling effect - Google Patents
A kind of method and device determining spherefruit precooling effect Download PDFInfo
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- CN110261257A CN110261257A CN201910381242.2A CN201910381242A CN110261257A CN 110261257 A CN110261257 A CN 110261257A CN 201910381242 A CN201910381242 A CN 201910381242A CN 110261257 A CN110261257 A CN 110261257A
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- temperature
- spherefruit
- measuring chamber
- loss rate
- mass loss
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Automation & Control Theory (AREA)
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- General Health & Medical Sciences (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
In order to solve the problems, such as that the result that the method for measuring spherefruit precooling effect in the prior art obtains is inaccurate, the present invention provides a kind of method and device for determining spherefruit precooling effect, first adjusts the closed indoor temperature and humidity of measurement to setting value；Then, the spherefruit refrigerated is taken out, it is contacted with atmospheric air and exchanges heat, when its surface temperature is identical as the temperature value of measuring chamber, be put into measuring chamber；Then setting test duration and mass loss rate value range；Then, the mass loss rate of real-time measurement spherefruit, when the value of the mass loss rate of spherefruit is outside range of set value, by reducing the temperature in measuring chamber, to reduce the value of mass loss rate；When the value of mass loss rate is in range of set value, keep measuring indoor temperature, until reaching preset test duration.The present invention can make the result for measuring spherefruit precooling effect more accurate.
Description
Technical field
The present invention relates to fruit precooling effect verify field, especially it is a kind of determine spherefruit precooling effect method and
Device.
Background technique
Fruit is still survived in the form of life entity after picking.The nutritional ingredient and moisture of its own can constantly subtract
It is few, and it is unable to get supplement, therefore quality constantly declines, storage period also can greatly shorten.Precooling treatment, which refers to, to be passed through
The temperature of fruit is rapidly decreased to be suitble to the temperature of storage by Refrigeration Technique.Studies have shown that the fruit without precooling treatment only exists
Rotten loss rate in transportational process is as high as 25%~30%, and passes through after precooling treatment, and rotten loss rate can be reduced to 3%~
10%.It is indicated above that precooling treatment can be effectively reduced the field heat of fruit and extend its storage period, in the matter for guaranteeing fruit
It is played a crucial role in amount.And determine that the standard of precooling effect is the temperature and mass loss rate variation of fruit.Energy
Enough temperature for simply and effectively measuring spherefruit and mass loss rate are just provided with important realistic meaning and economic meaning
Justice.
Existing spherefruit precooling effect is also to be measured by mass loss rate variation, still, by the way of
It is by the way that spherefruit is placed on stationary temperature, in the environment of 0.5~2 degree Celsius, after continuing for some time, to quality
Loss late is calculated, and realizes the judgement of spherefruit precooling effect.
During using aforesaid way, since the mass loss rate of spherefruit is to continue variation at a constant temperature
, and during implementing spherefruit refrigeration, temperature is also not necessarily constant.So existing measurement spherefruit
The method of precooling effect has inaccuracy.
Summary of the invention
In order to solve the problems, such as that the result that the method for measuring spherefruit precooling effect in the prior art obtains is inaccurate, this
Invention provides a kind of method and device for determining spherefruit precooling effect.
The present invention is to solve technical solution used by above-mentioned technology body: a kind of judgement spherefruit precooling effect
Method, its technical solution is that: the closed indoor temperature and humidity of measurement is adjusted to setting value first；Then, it takes out
The spherefruit refrigerated contacts it with atmospheric air and exchanges heat, identical as the temperature value of measuring chamber to its surface temperature
When, it is put into measuring chamber；Then setting test duration and mass loss rate value range；Then, the matter of real-time measurement spherefruit
Amount loss rate, when the value of the mass loss rate of spherefruit is outside range of set value, by reducing the temperature in measuring chamber, from
And reduce the value of mass loss rate；When the value of mass loss rate is in range of set value, keep measuring indoor temperature, until
Reach preset test duration.
A kind of device, including for measuring measuring chamber, for adjust measurement room temperature temperature-controlling module,
For adjusting the humid control component for measuring indoor humidity, the pressure sensor for acquiring spherefruit quality, for acquiring
The temperature and humidity integrative sensor and control assembly of temperature and humidity in measuring chamber；
Wherein, control assembly is electrically connected with temperature and humidity integrative sensor, measures indoor epidemic disaster for acquiring；
Wherein, control assembly is electrically connected with pressure sensor, temperature-controlling module, for acquiring pressure sensor
Data, and the mass loss rate of spherefruit is obtained according to the qualitative data, by the quality of obtained mass loss rate and setting
Loss late value range compares, and controls temperature-controlling module further according to comparison result, adjusts to temperature, the humidity in measuring chamber
It is whole.
The beneficial effects of the present invention are: value of the present invention by the mass loss rate of monitoring spherefruit, and to storage ball
Temperature and humidity in the space of shape fruit is adjusted, and the mass loss rate of spherefruit is made to remain at a stable rank
Section keeps the result for measuring spherefruit precooling effect more accurate.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Fig. 2 is structural schematic diagram of the invention.
Specific embodiment
The application is further detailed with reference to the accompanying drawing.
As shown in Figure 1, a kind of method for determining spherefruit precooling effect, its technical solution is that: it first will be closed
Temperature and humidity in measuring chamber 5 is adjusted to setting value；Then, the spherefruit refrigerated is taken out, itself and atmospheric air are made
Contact exchanges heat, and is measured using infrared temperature measurer, when its surface temperature is identical as the temperature value of measuring chamber, is put into survey
It measures in room 5；Then setting test duration and mass loss rate value range；Then, the mass loss rate of real-time measurement spherefruit,
When the value of the mass loss rate of spherefruit is outside range of set value, by reducing the temperature in measuring chamber 5, to reduce matter
The value of amount loss rate；When the value of mass loss rate is in range of set value, keep measuring indoor temperature, until reaching default
Test duration.
Basic conception of the invention is: in the case where guaranteeing that the mass loss rate of spherefruit is basically unchanged, continuing one
After the section time, the final mass loss rate of measurement spherefruit, to obtain the optimum value of spherefruit precooling effect.With tradition
Measuring and calculating means it is different, this method can more be bonded actual scene, obtain more accurate result.Meanwhile this method may be used also
To be applied in spherefruit or other articles that need to be refrigerated, by the means for keeping mass loss rate control storage temperature and humidity
Keep refrigeration object storage time more long.
Such as Fig. 2, a kind of device for the method having used above-mentioned judgement spherefruit precooling effect, its technical solution is that:
Including the measuring chamber 5 for measuring, the frequency conversion fan 4 for adjusting temperature in measuring chamber 5, for adjusting in measuring chamber 5
The container 11 of humidity is provided with evaporation solution in the container 11, the pressure sensor 8 for acquiring spherefruit quality, is used for
Acquire the temperature and humidity integrative sensor 10 and display 12 and main control unit 13 of temperature and humidity in measuring chamber 5；Wherein, master control
Unit 13 is electrically connected with temperature and humidity integrative sensor 10, for acquiring the epidemic disaster in measuring chamber 5；Wherein, main control unit 13 with
Pressure sensor 8, frequency conversion fan 4 are electrically connected, and are obtained for acquiring the data of pressure sensor 8, and according to the qualitative data
To the mass loss rate of spherefruit, by obtained mass loss rate compared with the mass loss rate value range of setting, further according to
Comparison result controls temperature-controlling module, is adjusted to temperature, the humidity in measuring chamber.
Specifically, measuring chamber 5 is made of organic glass cabinet 6, the outside of above-mentioned machine glass box body 6 is provided with heat preservation
Cotton, the heat-preservation cotton with a thickness of 1cm；Organic glass cabinet 6 forms a cool room 3.Traditional mode is that spherefruit is straight
Connect to be put into cool room 3 and measure, still, due to cool room 3 be a cuboid, air-flow unsmooth flowing, cooling rate compared with
Slowly.
In order to guarantee that the temperature in measuring chamber 5 reduces rapidly, temperature-controlling module includes for adjusting in measuring chamber 5
Whole refrigeration unit and the L-type baffle 9A being arranged in above pressure sensor 8；Wherein, L-type baffle 9A is upside down in measuring chamber 5
And the short side of L-type baffle 9A is connect with the bottom surface of measuring chamber 5, forms back the lateral surface of L-type baffle 9A long side and measuring chamber 5
Air duct 9.
Specifically, refrigeration unit includes frequency conversion fan 4, cooling piece 2 and radiator 1, wherein the work of frequency conversion fan 4
Gas circuit is: the air-flow that frequency conversion fan 4 is inhaled first passes through radiator 1 and cools down, after then passing through cooling piece 2, into frequency conversion fan 4
Input terminal；The output end of frequency conversion fan 4 is arranged on the short side of L-type baffle 9A, to L-type baffle 9A long side and measuring chamber 5
It blows in the space that bottom surface is formed.After cold wind enters the space of the bottom surface formation of L-type baffle 9A long side and measuring chamber 5, pass through
The heat outlet 5A discharge that air -return duct 9 is arranged from 5 bottom surface of measuring chamber.Preferably, heat outlet 5A setting is close in measuring chamber 5
On the bottom surface of 4 side of frequency conversion fan.
In order to measure precisely, pressure sensor 8, temperature and humidity integrative sensor 10 are arranged in L-type baffle 9A long side medial surface
Between 5 bottom surface of measuring chamber.
Further, control assembly includes display 12 and main control unit 13；Wherein, 13 electricity of display 12 and main control unit
Connection, for showing the data of the Temperature and Humidity module that main control unit 13 acquires and the mass loss rate that spherefruit in measuring chamber 5 is arranged in；
Wherein, main control unit 13 includes SCM system and data collecting instrument 14；The data collecting instrument 14 acquires pressure sensor 8, temperature
The data of humidity integrative sensor 10, and the data are transmitted in SCM system.SCM system is as needed to warm and humid
Degree is accordingly and the data of the mass loss rate of spherefruit are judged, guarantees that the mass loss rate of spherefruit is basically unchanged
In the case where, after continuing for some time, the final mass loss rate of measurement spherefruit, to obtain spherefruit precooling effect
Optimum value.
In order to observe conveniently, anemobiagraph 7 is provided in measuring chamber 5；The anemobiagraph 7 can be electrically connected with control assembly, will
Wind speed information is sent to main control unit 13, and shows in display 12.
Specifically, the evaporation solution being arranged in container 11 can be sodium chloride solution.
Specifically, the model of display 12 can be LCD12864 liquid crystal display.
Specifically, the model of pressure sensor 8 can be HX711 pressure sensor.
Specifically, the model of temperature and humidity integrative sensor 10 can be AMT1001 temperature and humidity integrative sensor.
Specifically, the model of frequency conversion fan 4 can be G-100A frequency conversion fan.
Specifically, the model of the single-chip microcontroller in SCM system is STC89C52RC single-chip microcontroller.
Specifically, the model of data collecting instrument 14 can be recording instrument without paper MIK-R200D.
Likewise, can also include keyboard in heretofore described control assembly, such as QYF-JP02 keyboard, for inputting
Temperature, humidity and the mass rate of material loss etc. set in measuring chamber 5.
Fig. 2 is subject in rectangular property description in the present invention；Meanwhile the technology of non-exhaustive presentation is existing in the present invention
Technology.
The foregoing is merely the preferred embodiment of invention, oneself, is not intended to limit the invention, all in spirit of the invention
With any modifications, equivalent replacements, and improvements made within principle etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of method for determining spherefruit precooling effect, it is characterised in that: first by the closed indoor temperature of measurement and
Humidity is adjusted to setting value；Then, the spherefruit refrigerated is taken out, it is contacted with atmospheric air and exchanges heat, to it
When surface temperature is identical as the temperature value of measuring chamber, it is put into measuring chamber；Then setting test duration and mass loss rate value model
It encloses；Then, the mass loss rate of real-time measurement spherefruit, when spherefruit mass loss rate value outside range of set value
When, by reducing the temperature in measuring chamber, to reduce the value of mass loss rate；When the value of mass loss rate is in range of set value
When interior, keep measuring indoor temperature, until reaching preset test duration.
2. a kind of device for having used the method as described in claim 1 for determining spherefruit precooling effect, it is characterised in that: packet
Include the measuring chamber (5) for measuring, the temperature-controlling module for adjusting measuring chamber (5) interior temperature, for adjusting measurement
The humid control component of room (5) interior humidity, the pressure sensor (8) for acquiring spherefruit quality, for acquiring measuring chamber
(5) the temperature and humidity integrative sensor (10) and control assembly of interior temperature and humidity；
Wherein, control assembly is electrically connected with temperature and humidity integrative sensor (10), for acquiring the epidemic disaster in measuring chamber (5)；Its
In, control assembly is electrically connected with pressure sensor (8), temperature-controlling module, for acquiring the number of pressure sensor (8)
According to, and the mass loss rate of spherefruit is obtained according to the qualitative data, obtained mass loss rate and the quality of setting are damaged
Mistake rate value range compares, and controls temperature-controlling module further according to comparison result, is adjusted to temperature, the humidity in measuring chamber.
3. the apparatus of claim 2, it is characterised in that: measuring chamber (5) is made of organic glass cabinet (6), upper
It states and is provided with heat-preservation cotton on the outside of machine glass box body (6).
4. the apparatus of claim 2, it is characterised in that: temperature-controlling module include for in measuring chamber (5) into
The refrigeration unit of row adjustment and the L-type baffle (9A) being arranged above pressure sensor (8)；
Wherein, L-type baffle (9A) is upside down in measuring chamber (5) and the bottom surface of the short side of the L-type baffle (9A) and measuring chamber (5) connects
It connects, the lateral surface of L-type baffle (9A) long side and measuring chamber (5) is made to form air -return duct (9)；It is provided on the bottom surface of measuring chamber (5)
Heat outlet (5A).
Wherein, pressure sensor (8), temperature and humidity integrative sensor (10) setting are in L-type baffle (9A) long side medial surface and measurement
Between room (5) bottom surface.
5. the apparatus of claim 2, it is characterised in that: humid control component includes the container for controlling humidity
(11), evaporation solution is provided in the container (11).
6. the apparatus of claim 2, it is characterised in that: control assembly includes display (12) and main control unit
(13)；Wherein, display (12) is electrically connected with main control unit (13), for showing the data of the Temperature and Humidity module of main control unit (13) acquisition
With setting measuring chamber (5) interior spherefruit mass loss rate；
Wherein, main control unit (13) includes SCM system and data collecting instrument (14)；The data collecting instrument (14) acquires pressure
The data of sensor (8), temperature and humidity integrative sensor (10), and the data are transmitted in SCM system.
7. the apparatus of claim 2, it is characterised in that: further include the anemobiagraph (7) being arranged in measuring chamber (5)；
The anemobiagraph (7) is electrically connected with control assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910381242.2A CN110261257B (en) | 2019-05-08 | 2019-05-08 | Method and device for judging precooling effect of spherical fruits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910381242.2A CN110261257B (en) | 2019-05-08 | 2019-05-08 | Method and device for judging precooling effect of spherical fruits |
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| Publication Number | Publication Date |
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| CN110261257A true CN110261257A (en) | 2019-09-20 |
| CN110261257B CN110261257B (en) | 2022-03-11 |
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| CN201910381242.2A Active CN110261257B (en) | 2019-05-08 | 2019-05-08 | Method and device for judging precooling effect of spherical fruits |
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