CN116379718A - Infrared and hot air combined intelligent control drying system and method based on multi-source information fusion - Google Patents
Infrared and hot air combined intelligent control drying system and method based on multi-source information fusion Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
- F26B9/066—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers the products to be dried being disposed on one or more containers, which may have at least partly gas-previous walls, e.g. trays or shelves in a stack
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
- A23N12/08—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for drying or roasting
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
- A23N12/08—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for drying or roasting
- A23N12/12—Auxiliary devices for roasting machines
- A23N12/125—Accessories or details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
- F26B25/225—Controlling the drying process in dependence on liquid content of solid materials or objects by repeated or continuous weighing of the material or a sample thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
- F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses an infrared and hot air combined intelligent control drying system and method based on multi-source information fusion, wherein the system comprises an infrared radiation device and an online detection control device; the infrared radiation device comprises a box body filled with heat insulation materials, a drying chamber, an infrared plate, a storage table and a stepless height adjusting device, wherein high-temperature resistant tempered glass is arranged in the middle of the top of the box body, holes with the same size are reserved in the top plate of the drying chamber, the infrared plate is fixed at the position of the top plate in the drying chamber except for the middle opening, and the storage table is arranged below the infrared plate; the on-line detection control device comprises an industrial camera, a rapid electronic nose, a weighing sensor in a drying chamber, a control module and the like which are arranged above the infrared radiation device; the infrared plate and the air heater are controlled by regulating voltage/current through a thyristor; according to a set program, signals are fed back to the control circuit, and then control signals are output to continuously adjust the power of the infrared plate and the power of the hot air blower, so that the accurate control of the material temperature in different drying modes is realized.
Description
Technical Field
The invention belongs to the technical field of food processing, and relates to an infrared hot air combined intelligent control drying system and method based on multi-source information fusion.
Background
Infrared radiation refers to electromagnetic radiation having a wavelength in the range of 0.75 to 1000 μm. Different from a hot air heating mode, infrared radiation transmits heat in an electromagnetic wave mode under the condition of not needing any medium, so that heat loss is greatly reduced, and irradiation efficiency is effectively improved. When infrared rays act on the material, an electric field, vibration and rotation of atoms and molecules can be induced, and when the infrared rays are incident on the surface of the material, one part of the infrared rays are reflected out of the surface, and the other part of the infrared rays enter the interior of the object. The infrared radiation absorbed by the material can be quickly converted into internal heat, the molecular motion is aggravated, and the temperature of the material is obviously increased. The infrared radiation and the hot air have better synergistic effect, the infrared radiation improves the migration speed of moisture to the surface, the hot air flow can effectively remove the surface moisture, the surface temperature of materials is reduced, the mass transfer rate is increased, and the method has the advantages of high drying efficiency, high heat and mass transfer coefficient, low energy consumption and the like.
However, the infrared hot air combined drying equipment commonly used in the industry at present needs to manually adjust the infrared radiation and hot air output power, the method depends on the experience of operators, the industrialization degree is low, the quality difference of different batches of products is large, the real-time change temperature of the dried materials cannot be obtained, the excessive power is easy to cause the loss of aromatic smell and browning of the materials, even the carbonization of the materials is caused, the drying quality is seriously affected, and the actual large-scale high-quality production requirement cannot be met. In order to solve the problem, an intelligent feedback control device needs to be developed to replace the defects of low intelligent degree, poor drying effect and the like of the infrared hot air combined drying device in the existing market.
Disclosure of Invention
The invention aims to overcome the defects that the existing drying strategy is single, the process parameter regulation depends on the working experience of operators and the like, and provides an infrared hot air combined intelligent control drying system and method based on multi-source information fusion, which solve the defects of low intelligent degree, single control strategy, poor drying effect and the like of the infrared hot air combined drying equipment in the existing market.
In order to solve the technical problems, the invention adopts the following technical scheme.
The invention discloses an infrared hot air coupling intelligent control drying system based on multi-source information fusion, which comprises the following components:
the infrared radiation device is used for drying materials and structurally comprises a box body, a drying chamber, an infrared radiation plate, a storage table and a stepless height adjusting device; the box body is made of angle steel and thin steel plates, and a heat insulation material is filled between the box body and the drying chamber; the middle part of the top of the box body is provided with high-temperature resistant tempered glass or quartz glass, and holes with the same size are reserved at the same position of the top plate of the drying chamber and are used for collecting the information of the dried materials through machine vision; the infrared radiation plate is fixed at the position of the drying chamber roof except the middle opening, and the object placing table is arranged below the infrared radiation plate and is used for placing drying materials;
the on-line detection control device is used for detecting the temperature, humidity, quality, shape and color change of materials in the heating process, and comprises: an industrial camera arranged above the infrared radiation device, a rapid electronic nose, a weighing sensor, a temperature sensor, a humidity sensor, a control module, an equipment switch and a computer in a drying chamber;
the infrared radiation plate and the hot air blower are controlled by regulating voltage or current through thyristors; according to the set program, the signals are fed back to the control circuit, and the control circuit outputs control signals to continuously adjust the power of the infrared radiating plate and the power of the hot air blower, so that the accurate control of the material temperature in different drying modes is realized.
Specifically, the control module comprises a temperature sensor, a humidity sensor, an NI data acquisition card and a thyristor; the temperature sensor and the humidity sensor comprise a first thermocouple connected with the infrared radiation plate, a second thermocouple connected with the material and a third thermocouple connected with the hot air blower; the first thermocouple connected with the infrared radiation plate is connected with the thyristor, and the thyristor is connected with the computer through the NI data acquisition card.
Preferably, the distance between the inner wall and the outer wall of the infrared radiation device is 5cm, and the infrared radiation device is filled with heat insulation materials.
Furthermore, a stepless height adjusting device is arranged below the object placing table and is used for adjusting the distance between the material and the infrared radiation plate. The object placing table and the stepless height adjusting device are provided with a weighing sensor fixed at the bottom of the infrared radiation device.
Specifically, the machine vision comprises a camera bracket, an industrial camera and a lighting device; the camera bracket is arranged above the infrared radiation device box body, and the angle and the height of the industrial camera can be adjusted; the lighting device comprises high-temperature-resistant LED lamps and halogen lamps which are uniformly distributed in a drying chamber of the infrared radiation device.
Further, the quick electronic nose is portable and comprises a PEN series electronic nose and a zNose electronic nose and is used for detecting odor components of materials in a drying process.
The invention relates to an infrared hot air combined intelligent control drying method based on multi-source information fusion, which adopts the system as described above, and comprises the following steps:
step one, material preparation: cleaning and slicing the picked fruits and vegetables, and uniformly spreading on a storage table in an infrared radiation cavity;
step two, debugging and starting equipment: the thermocouple temperature sensing element is connected with the surface of the material, the height of the camera and the height of the object placing table are adjusted, the power supply is turned on, and the camera is adjusted, so that the camera can accurately collect the shape and the color of the material;
step three, online detection and data transmission: the temperature of the materials in the drying process is transmitted to a computer through a thermocouple, and signal parameters such as material quality, image characteristics, smell characteristics response sensors and the like are transmitted to the computer through a USB connecting wire;
fourth, online adjustment: corresponding control programs are compiled according to preset drying conditions, and the output signals of the control circuit are used for online adjusting and controlling the power of the infrared radiating plate and the power of the hot air blower so as to meet the drying requirements;
step five, material cooling: and (3) placing the material dried to the target moisture in a room temperature environment under natural conditions for cooling.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. the invention establishes the intelligent control drying system and the method based on the combination of the infrared and the hot air of the multisource information, the equipment adds more intelligent control systems compared with the traditional infrared drying and hot air drying, and the on-line detection reduces the influence of external factors such as manpower and the like compared with the off-line detection, and has the advantages of stable operation, simple operation, energy conservation, high efficiency, integration, intellectualization and the like.
2. According to the system, by combining a machine vision technology, the image information of the dried materials is acquired in real time through an industrial camera, the characteristics of the shapes, the colors, the textures and the like of the images of the materials are extracted on line through corresponding computer programs and algorithms, and the nonlinear corresponding relation between apparent characteristic parameters and drying parameters of the materials is established, so that a foundation is provided for realizing the requirement of on-line real-time regulation and control of the parameters of the drying process according to apparent characteristics of the dried materials.
3. The odor information of the materials in the drying process is acquired in real time by using the rapid electronic nose, and the method has the characteristics of high detection speed, short response time, high precision and the like, the odor fingerprint of the dried materials is obtained by using Win master or Vaporrint analysis software, the acquired odor data is transmitted to a program for online regulation and control of the drying parameters, and the acquired odor data is used as an index for regulating the drying parameters, so that a foundation is provided for realizing online real-time regulation and control of the drying parameters according to the odor characteristics of the dried materials.
4. Through the on-line detection device, various parameters such as the water content, the temperature and the like of the materials are obtained, and a drying process control program based on the quality of the materials is compiled, so that the output power of infrared radiation and hot air can be reasonably and effectively regulated and controlled according to the drying requirement, and the satisfactory drying effect is achieved.
5. The infrared hot air combined intelligent control drying system and the method thereof based on multi-source information fusion provided by the invention have high integration degree, and a reasonable drying control strategy is formulated according to the physical and chemical properties of different materials and in combination with various quality indexes such as moisture, temperature, color, texture and smell of the materials in the drying process so as to adapt to the drying requirements required by the different materials, thereby realizing efficient, high-quality and standardized drying.
Drawings
Fig. 1 is a schematic structural diagram of an infrared hot air combined intelligent control drying system based on multi-source information fusion.
Fig. 2 is a schematic diagram of an internal structure of a control module of the system according to an embodiment of the invention.
Fig. 3 is a schematic diagram of a drying device camera and an infrared radiation plate structure of a system according to an embodiment of the invention.
Fig. 4 is a graph of output temperature versus actual temperature of a material for multi-source information feedback control according to an embodiment of the method of the present invention.
The device comprises a 1-industrial camera, a 2-camera support, a 3-infrared radiation plate, a 4-fan, a 5-lighting device, a 6-dry material, a 7-object placing table, an 8-stepless height adjusting device, a 9-weighing sensor, a 10-control module, a 11-computer, a 12-small air pump, a 13-condensing device, a 14-quick electronic nose, a 15-gas collecting bottle, a 16-hot air blower, 17-toughened glass, a 101-first thermocouple, a 102-second thermocouple, a 103-third thermocouple, a 104-thyristor and a 105-NI data acquisition card.
Detailed Description
The invention discloses an infrared hot air combined intelligent control drying system and method based on multi-source information fusion, and belongs to the technical field of food processing. The system comprises an infrared radiation device and an on-line detection control device. The infrared radiation device comprises a box body made of angle steel and thin steel plates, a plurality of infrared radiation plates, a drying chamber and a storage table, wherein the middle part of the top of the box body is provided with high-temperature resistant tempered glass or quartz glass 17, and holes with the same size are reserved at the same position of the top plate of the drying chamber, so that a multispectral camera can acquire material images on line; a weighing sensor fixed at the bottom of the box body is arranged below the object placing table; the online detection control device comprises a machine vision, a quick electronic nose, a temperature sensor, a humidity sensor, a weighing sensor, a control module and a computer; the control module extracts quality characteristic parameters of materials in the drying process through a modeling analysis method according to the temperature, the water content, the image characteristics and the smell signals of the materials, and writes a drying strategy program based on user requirements for controlling the output power of the infrared radiating panel. Compared with the prior art, the method can adopt a single parameter or combination-regulated multisource information fusion drying means to control the material drying process so as to adapt to the drying requirements of different materials, and can effectively dehydrate and dry the materials and simultaneously maintain good drying quality.
The invention is described in further detail below with reference to the accompanying drawings.
The infrared hot air combined intelligent control drying system based on multi-source information fusion shown in fig. 1 comprises: infrared radiation device and on-line detection controlling means.
The infrared radiation device is used for drying materials and comprises a box body, a drying chamber, an infrared radiation plate 3, a storage table 7 and a stepless height adjusting device 8.
The on-line detection control device is used for detecting the temperature, humidity, quality, shape and color change of materials and the collection of smell thereof in the heating process, and comprises a machine vision, a temperature sensor, a humidity sensor, a device switch, a quick electronic nose 14, a weighing sensor 9, a control module 10 and a computer 11.
As shown in fig. 3, the distribution of the positions of the case, the camera and the camera bracket, the infrared radiation plate 3 of the tempered glass or quartz glass 17, and the object placing table 7 can be seen.
The box is made of angle steel and thin steel plates, the optimal selection distance between the box and the drying chamber is 5cm, and heat insulation materials are filled between the box and the drying chamber, so that dangers caused by high temperature of the outer wall of an operator in the working process of the equipment are avoided. The middle part at the top of the box body is provided with a high-temperature resistant tempered glass or quartz glass 17, holes with the same size are reserved at the same position of the top plate of the drying chamber, and the middle parts at the top of the box body and the drying chamber are provided with the top plate 17 of the high-temperature resistant tempered glass or quartz glass for machine vision image acquisition.
An infrared radiation plate, a storage table and a lighting device are arranged in the drying chamber. The infrared radiation plate 3 is fixed at the position of the top plate except the middle opening of the drying chamber; a storage table 7 is arranged at a position opposite to the lower part of the infrared radiation plate 3. The object placing table 7 can adjust the distance between the material and the infrared radiation plate 3 through the stepless height adjusting device 8, and the height range is between 10 cm and 40 cm.
The stepless height adjusting device 8 can change the distance between the material and the infrared radiation plate, and a weighing sensor 9 fixed at the bottom of the box body is arranged below the stepless height adjusting device.
The machine vision comprises a camera support 2, an industrial camera 1 and a lighting device 5. The camera support 2 is arranged above the infrared radiation device, the industrial camera 1 can adjust the angle and the height of the support on the support so as to meet the requirements of different image acquisition, and the toughened glass or quartz glass 17 at the top of the box body can be beneficial to the shooting of the camera on the material change in the drying process. The lighting device 5 comprises a high-temperature-resistant LED lamp, a halogen lamp and the like, is uniformly distributed in a drying chamber of the infrared radiation device, and can provide a light source for image acquisition.
The industrial camera includes a camera and a lens. Before drying, the camera is calibrated, including distortion correction and tint correction. The industrial camera can collect images of dry materials on line, and perform real-time image processing and feature extraction. The basic steps of image processing and feature extraction include: image preprocessing, noise and background removal, shooting area selection and marking, gray correction, and extraction and calculation of characteristic information such as color, texture, shape and the like. And (3) acquiring an image of the dry material on line in the drying process by an industrial camera, and carrying out real-time image processing and feature extraction on the acquired image. The image processing step includes: image preprocessing (graying, filtering and image reconstruction), morphological processing (graying, binarizing, eroding, dilation and masking of the image), region of interest selection and marking. The image feature extraction includes material color, shape and texture features. Wherein, the image characteristic index comprises the changes of the color, shape and texture characteristics of the sample in the drying process.
The weighing sensor 9 is positioned at the bottom of the infrared radiation device box body, the stepless height adjusting device 8 is arranged above the weighing sensor, the object placing table 7 is arranged above the stepless height adjusting device 8, the mass of materials in the drying process is weighed in real time, and the material dehydration rate is calculated.
In addition, the rapid electronic nose 14 is portable, and includes PEN-series electronic noses, zNose electronic noses, and the like. The volatile smell of the materials in the drying chamber is collected by a small air pump, and after the moisture of the wet air is removed by a condensing device, the smell components of the materials in the drying process are detected in a gas collecting bottle.
As shown in fig. 2, the control module 10 includes a temperature sensor, a humidity sensor, an NI data acquisition card 105, and a thyristor 104. The temperature sensor and the humidity sensor include: thermocouple sensors or fiber optic sensors, and humidity sensors. The temperature sensor comprises a first thermocouple 101 connected with the infrared radiation plate, a second thermocouple 102 connected with the material and a third thermocouple 103 connected with the hot air blower, wherein the thermocouples are K, T type thermocouples and the like and are used for detecting the temperature of the infrared radiation plate and the material, and the temperature range of the detected infrared radiation plate can be 20-600 ℃. The first thermocouple 101 of the infrared radiation plate is connected with a thyristor, and the thyristor 104 is connected with a computer through an NI data acquisition card 105. The infrared radiating panel and hot air blower power is controlled by a thyristor 104 regulated voltage or current. According to the program that sets for, feed back the control circuit with the signal, control circuit output control signal continuously regulated infrared radiation board and hot-blast air-blower power realizes the accurate control to the material temperature through different drying methods.
The invention discloses an infrared hot air coupling intelligent control drying method based on multi-source information fusion, which comprises the following steps:
firstly, preparing materials, cleaning and slicing picked fruits and vegetables, and uniformly spreading the fruits and vegetables on a placing table in an infrared radiation cavity;
step two, debugging and starting, connecting a thermocouple temperature sensing element with the surface of the material, adjusting the height of the camera and the height of the object placing table, switching on a power supply, and adjusting the camera so that the camera can accurately acquire the shape and the color of the material;
step three, on-line detection and data transmission, wherein the temperature of the material in the drying process is transmitted to a computer through a thermocouple, and signal parameters such as material quality, image characteristics, smell characteristics response sensors and the like are transmitted to the computer through a USB connecting wire;
step four, online adjustment, namely writing a corresponding control program according to preset drying conditions, and online adjusting and controlling the power of the infrared radiating plate and the power of the hot air blower by using a control circuit output signal so as to meet the drying requirement;
step five, cooling the material, namely placing the material dried to the target moisture in a room temperature environment under natural conditions for cooling;
and step six, storing and selling, wherein the fruit and vegetable slices can be directly put into a warehouse for storage or transported for market sales after being dried and cooled.
Examples: ginger infrared hot air coupling multi-source information feedback control drying method
Fresh ginger is washed and cut into ginger slices with the length of 20mm multiplied by 4mm, and the ginger slices are uniformly placed in an infrared hot air coupling drying cavity. The distance between the infrared radiating plate and the object placing table is 12cm, the infrared radiating power and the hot air drying temperature are continuously adjusted according to the difference value between the material temperature and the control output temperature, the exposure time of the industrial camera is 250ms, the single acquisition time of the electronic nose comprises the time of odor acquisition and sensor cleaning, and the single working time is 3min. The specific implementation process comprises the following steps:
and (3) starting a main power supply of the drying equipment, starting a light source in the drying room, calibrating the industrial camera and the electronic nose, and placing fresh ginger slices on the material placing table. And writing a reasonable control program according to the drying requirement. After drying by the multisource information fusion control strategy, the temperature of the material is controlled between 53 ℃ and 65 ℃ and the wind speed is 0.8-1.0m/s. The initial temperature of the material is 24.7 ℃, the actual temperature of the material in the initial stage of drying rises rapidly until reaching the fuzzy output temperature, and then fluctuates up and down around the fuzzy output temperature value, and the error does not exceed 1 ℃. The obtained ginger slices have a color difference value (ΔE) of 4-8, and a browning value (BI/BI 0 ) The total flavone content is 22.1mg/g between 1.1 and 1.4, the DPPH free radical scavenging capacity reaches 70 percent, and the dry shrinkage percentage is 75 to 80 percent. Compared with constant temperature drying, the dried ginger slice product obtained by adopting the multisource information intelligent control mode has the advantages of good color and luster and nutrition components, uniform quality and high commodity value.
Table 1 below is a multi-objective evaluation table for different drying modes (fixed drying temperature and multi-source controlled drying mode):
Claims (8)
1. an intelligent control drying system based on multisource information fusion and combining infrared hot air is characterized by comprising:
the infrared radiation device is used for drying materials and structurally comprises a box body, a drying chamber, an infrared radiation plate (3), a storage table (7) and a stepless height adjusting device (8); the box body is made of angle steel and thin steel plates, and a heat insulation material is filled between the box body and the drying chamber; the middle part of the top of the box body is provided with high-temperature resistant tempered glass or quartz glass (17), and holes with the same size are reserved at the same position of the top plate of the drying chamber and are used for collecting information of the drying materials through machine vision; the infrared radiation plate (3) is fixed at the position of the top plate except the middle opening in the drying chamber, and the object placing table (7) is arranged below the infrared radiation plate (3) and is used for placing drying materials;
the on-line detection control device is used for detecting the temperature, humidity, quality, shape and color change of materials in the heating process, and comprises: an industrial camera (1) arranged above the infrared radiation device, a quick electronic nose (14), a weighing sensor (9), a temperature sensor, a humidity sensor, a control module (10), an equipment switch and a computer (11) in the drying chamber;
the infrared radiation plate (3) and the hot air blower (16) are controlled by the thyristor (104) to regulate voltage or current; according to the set program, the signals are fed back to the control circuit, and the control circuit outputs control signals to continuously adjust the power of the infrared radiating plate and the power of the hot air blower, so that the accurate control of the material temperature in different drying modes is realized.
2. The intelligent control drying system based on the combination of infrared and hot air with multi-source information fusion according to claim 1, wherein the control module (10) comprises a temperature sensor, a humidity sensor, an NI data acquisition card (105) and a thyristor (104); the temperature sensor and the humidity sensor comprise a first thermocouple (101) connected with the infrared radiation plate (3), a second thermocouple (102) connected with materials and a third thermocouple (103) connected with the hot air blower (16); the first thermocouple (101) connected with the infrared radiation plate (3) is connected with the thyristor (104), and the thyristor (104) is connected with the computer (11) through the NI data acquisition card (105).
3. The intelligent control drying system based on the combination of multi-source information fusion and infrared hot air according to claim 1, wherein the preferable distance between the inner wall and the outer wall of the infrared radiation device is 5cm, and the intelligent control drying system is filled with heat insulation materials.
4. The intelligent control drying system based on the combination of the infrared hot air and the air with the multisource information fusion according to claim 1 is characterized in that a stepless height adjusting device (8) is arranged below the object placing table (7) and used for adjusting the distance between materials and the infrared radiation plate (3).
5. The intelligent control drying system based on the combination of the infrared hot air and the air with the multisource information fusion according to claim 1, wherein a weighing sensor (9) fixed at the bottom of the infrared radiation device is arranged below the object placing table (7) and the stepless height adjusting device (8).
6. The intelligent control drying system based on the combination of infrared hot air and multi-source information fusion according to claim 1, wherein the machine vision comprises a camera bracket (2), an industrial camera (1) and a lighting device (5); the camera bracket (2) is arranged above the infrared radiation device box body, and the angle and the height of the industrial camera (1) can be adjusted; the lighting device (5) comprises high-temperature-resistant LED lamps and halogen lamps which are uniformly distributed in the drying chamber of the infrared radiation device.
7. The intelligent control drying system based on the combination of the infrared hot air and the air with the multisource information fusion according to claim 1, wherein the rapid electronic nose (14) is portable and comprises a PEN series electronic nose and a zNose electronic nose and is used for detecting the odor components of materials in the drying process.
8. An intelligent control drying method based on multi-source information fusion and combining infrared hot air, which is characterized by adopting the system as claimed in any one of claims 1 to 7, and comprising the following steps:
step one, material preparation: cleaning and slicing the picked fruits and vegetables, and uniformly spreading on a storage table in an infrared radiation cavity;
step two, debugging and starting equipment: the thermocouple temperature sensing element is connected with the surface of the material, the height of the camera and the height of the object placing table are adjusted, the power supply is turned on, and the camera is adjusted, so that the camera can accurately collect the shape and the color of the material;
step three, online detection and data transmission: the temperature of the materials in the drying process is transmitted to a computer through a thermocouple, and signal parameters such as material quality, image characteristics, smell characteristics response sensors and the like are transmitted to the computer through a USB connecting wire;
fourth, online adjustment: corresponding control programs are compiled according to preset drying conditions, and the output signals of the control circuit are used for online adjusting and controlling the power of the infrared radiating plate and the power of the hot air blower so as to meet the drying requirements;
step five, material cooling: and (3) placing the material dried to the target moisture in a room temperature environment under natural conditions for cooling.
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