Intelligent vegetable and fruit cold storage fresh-keeping system based on Internet of Things control

Abstract

The utility model discloses an intelligent vegetable and fruit cold storage fresh-keeping system based on Internet of Things control, which comprises a storage body, a frequency conversion refrigerator arranged on one side of the outer wall of the storage body, an exhaust fan and a plurality of storage boxes arranged at the rear end of the inner wall of the storage body, an information acquisition module, a control execution module, a man-machine interaction module and an Internet of Things terminal module are arranged at the upper end of the inner wall of each storage box, a cold air branch pipe is arranged at the rear end of the outer wall of each storage box, an air outlet of the variable-frequency refrigerator communicates with a cold air main pipe, and an air guide branch pipe is arranged below the rear end of the outer wall of each storage box; an air inlet of the exhaust fan communicates with an air guide main pipe, and an electromagnetic valve is installed at the upper end of the outer wall of each storage box. According to the fruit and vegetable fresh-keeping device, fresh keeping of fruits and vegetables can be achieved, the storage time of the fruits and vegetables is prolonged, storage and fresh keeping can be conducted according to different types of fruits and vegetables, and therefore the practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fruit and vegetable fresh -keeping technical field, especially in based on the intelligent cold storage fresh -keeping system of fruit and vegetable of internet of things control. BACKGROUND

[0002] The preharvest fruit and vegetable plant growth is dominated by photosynthesis, and the greater the net photosynthetic rate (the difference between photosynthetic rate and respiratory rate), the greater the accumulation of organic matter is.The postharvest photosynthesis is the process that fruit and vegetable meristem continues to divide, expand and differentiate using the nutrients in the body, and the transfer of edible part to non-edible part generally causes quality decline.

[0003] According to the utility model patent of a fruit and vegetable fresh -keeping system of public no. CN214207031U, including fruit and vegetable identification device, light fresh -keeping device and controller, fruit and vegetable identification device can identify the fruit and vegetable category stored in the storage tank, and signal connection with processor, to feed back the result identified to controller, light fresh -keeping device is provided with at least one LED light source, the LED light source can emit ultraviolet light with wavelength of 200-400 nanometers, and these ultraviolet light can irradiate on the fruit and vegetable stored in the storage tank, the controller is signal connected with light fresh -keeping device, and the light dose of the light emitted in the light fresh -keeping device is controlled according to the fruit and vegetable type identified by fruit and vegetable identification device, the fruit and vegetable fresh -keeping system is preserved in the physical way, and can maintain or increase the nutrient content in fruit and vegetable, and improve the nutritional value.

[0004] Although the above technical scheme can preserve fruit and vegetable to a certain extent, it is impossible to make every fruit and vegetable product be evenly irradiated by the LED light source when preserving fruit and vegetable, because fruit and vegetable is basically stacked when preserving, so low-temperature preservation is basically used in real life, which can not only preserve fruit and vegetable, but also avoid damage caused by temperature rise of fruit and vegetable in the middle position due to stacking, and the above technical scheme cannot avoid this technical defect, and the practicability is insufficient. UTILITY MODEL CONTENT

[0005] The utility model aims at providing the intelligent cold storage fresh -keeping system of fruit and vegetable based on internet of things control, which can not only preserve fruit and vegetable and prolong the storage time, but also store and preserve different types of fruit and vegetable, thereby improving the practicability.

[0006] The above technical purpose of the utility model is realized by the following technical scheme.

[0007] The application discloses a vegetable and fruit intelligent cold storage preservation system based on an internet of things control, which comprises a storage body, a variable frequency refrigerating machine and an exhaust fan which are installed on one side of the outer wall of the storage body, a plurality of storage boxes which are made of heat preservation materials and are arranged at the rear end of the inner wall of the storage body in an equidistant manner along the length direction of the inner wall, a gap between the front end of the outer wall of each storage box and the front end of the inner wall of the storage body and a passageway which is formed by the gap, an information acquisition module, a control execution module, a man-machine interaction module and an internet of things terminal module which are arranged at the upper end of the inner wall of each storage box.

[0008] A cold air branch pipe which communicates with the rear end of the outer wall of each storage box and extends into the interior of the storage box is arranged at the rear end of the outer wall of each storage box, an electric regulating valve which communicates with the cold air branch pipe is arranged at the end of each cold air branch pipe which extends into the storage box, an air outlet of the variable frequency refrigerating machine is connected with a cold air main pipe which communicates with each cold air branch pipe, a gas guide branch pipe which communicates with the rear end of the outer wall of each storage box and extends into the interior of the storage box is arranged below the rear end of the outer wall of each storage box, an electric air valve which communicates with the gas guide branch pipe is arranged at the end of each gas guide branch pipe which extends into the storage box, an air inlet of the exhaust fan is connected with a gas guide main pipe which communicates with each gas guide branch pipe, and an electromagnetic valve which communicates with the upper end of the outer wall of each storage box is arranged at the upper end of the outer wall of each storage box.

[0009] When the storage body is opened, the vegetables and fruits which need to be preserved are put into different storage boxes according to different types, preset temperature and humidity values and upper and lower limit values of illumination are set through the man-machine interaction module, environment parameters are collected through the data acquisition module, the control execution module generates control instructions through the aggregation node, the control execution module adjusts the preservation environment in the storage box according to the instructions, the measured value is continuously compared with the set value, the alarm is triggered when the limit is exceeded, the parameter value is uploaded to the cloud through the internet of things terminal module, and the user can remotely modify the parameters through an App.

[0010] When the control execution module adjusts the environment parameters, the cold energy generated by the variable frequency refrigerating machine is conducted into each cold air branch pipe through the cold air main pipe, the corresponding electric regulating valve of each storage box is opened according to the type of the stored fruits and vegetables, the preservation environment of the storage box reaches the preset value, the exhaust fan works when the air in a storage box needs to be replaced, the corresponding electric air valve and electromagnetic valve are opened, the old gas in the storage box flows into the gas guide main pipe through the gas guide branch pipe and is finally exhausted, meanwhile, the new gas from the outside flows into the storage box through the electromagnetic valve, and the replacement of the gas is completed.

[0011] The information acquisition module comprises a temperature sensor, a humidity sensor, a gas concentration sensor and a data aggregation module, and the environment data is collected in real time.

[0012] The control execution module comprises an S7-1200PLC and an illumination execution mechanism, and the environment parameters are dynamically adjusted through a PID algorithm.

[0013] The further setting of the utility model is that the man-machine interaction module includes MCGS touch screen, Web terminal and mobile phone App, and supports parameter setting, real-time monitoring and alarm information pushing.

[0014] The further setting of the utility model is that the internet of things terminal module integrates 5G gateway and GPRS remote communication unit, and realizes the bidirectional transmission of cold storage data and cloud platform.

[0015] The further setting of the utility model is that the upper end of each electromagnetic valve is provided with a filter communicated with the electromagnetic valve.

[0016] The further setting of the utility model is that the clean degree of the outside air entering the storage box can be improved.

[0017] In summary, the utility model has the following beneficial effects:

[0018] First, the utility model can not only realize the preservation of fruits and vegetables and prolong the storage time, but also can store and preserve different types of fruits and vegetables, thereby improving the practicability;

[0019] Second, the utility model can adjust the environmental temperature in multiple storage boxes through a variable frequency refrigeration machine and an exhaust fan, thereby greatly reducing the energy loss;

[0020] Third, the utility model realizes cooperation through the internet of things technology, reduces the artificial inspection cost, improves the environmental stability through PID control and multi-sensor feedback, and prolongs the preservation period of fruits and vegetables. DRAWINGS

[0021] Figure 1 It is the overall structure schematic view of the utility model;

[0022] Figure 2 It is mainly used for showing the position connection relationship of the variable frequency refrigeration machine and the exhaust fan;

[0023] Figure 3 It is mainly used for showing the position connection relationship of the components in the storage body;

[0024] Figure 4 It is the system hardware architecture view of the utility model;

[0025] Figure 5 It is the software control flow chart of the utility model;

[0026] Figure 6 It is the man-machine interaction schematic view of the utility model.

[0027] In the figure: 1, the library body; 11, variable frequency refrigerating machine; 12, exhaust fan; 13, storage box; 14, passageway; 15, information acquisition module; 16, control execution module; 17, man-machine interaction module; 18, internet of things terminal module; 19, cold air branch pipe; 2, electric regulating valve; 21, cold air main pipe; 22, air guide branch pipe; 23, electric air valve; 24, air guide main pipe; 25, electromagnetic valve; 26, filter. DETAILED DESCRIPTION

[0028] The utility model will be described in further detail below in combination with the drawings.

[0029] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner" and "outer" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] Embodiment, refer to Figures 1-6 , the vegetable and fruit intelligent cold storage preservation system based on internet of things control, including the library body 1, install in the variable frequency refrigerating machine 11, exhaust fan 12 of the library body 1 outer wall one side, the rear end of the inner wall of the library body 1 is provided with a plurality of equal interval distribution and all by the storage box 13 made of heat preservation material along its length direction, and the gap is left between the front end of the outer wall of each storage box 13 and the front end of the inner wall of the library body 1 and forms a passageway 14, the upper end of the inner wall of each storage box 13 is provided with an information acquisition module 15, control execution module 16, man-machine interaction module 17 and internet of things terminal module 18, control execution module 16 includes S7-1200 PLC, illumination execution mechanism, through PID algorithm dynamic adjustment environmental parameter, information acquisition.

[0031] Each storage box 13 is disposed with a plurality of nodes for real-time acquisition of environmental data, and the convergence node of the data convergence module interfaces sensor data, communicates with PLC through Modbus protocol and stores to database, and the man-machine interaction module 17 includes MCGS touch screen, Web end and mobile phone App, supports parameter setting, real-time monitoring, alarm information push and the switching of automatic or manual mode, and the internet of things terminal module 18 integrates 5G gateway and GPRS remote communication unit, realizes the two-way transmission of cold storage data and cloud platform, and users can real-time view cold storage state and historical data.

[0032] The rear end of the outer wall of each storage box 13 is provided with a cold air branch pipe 19 communicated therewith and extending into the interior thereof, the end of each cold air branch pipe 19 extending into the storage box 13 is provided with an electric regulating valve 2 communicated therewith, the outlet of the frequency conversion refrigeration machine 11 is communicated with a cold air main pipe 21 communicated with the rear end of each cold air branch pipe 19, the lower end of the rear end of the outer wall of each storage box 13 is provided with a gas guide branch pipe 22 communicated therewith and extending into the interior thereof, the end of each gas guide branch pipe 22 extending into the storage box 13 is provided with an electric air valve 23 communicated therewith, the air inlet of the exhaust fan 12 is communicated with a gas guide main pipe 24 communicated with the rear end of each gas guide branch pipe 22, the upper end of the outer wall of each storage box 13 is provided with an electromagnetic valve 25 communicated therewith, and the upper end of each electromagnetic valve 25 is provided with a filter 26 communicated therewith.

[0033] Usage: when in use, the library body 1 is opened, the vegetables and fruits needing to be preserved are placed in different storage boxes 13 through the passageway 14 in the library body 1 according to different types, then the preset temperature and humidity values, the upper and lower limit values of illumination are preset through the MCGS touch screen of the man-machine interaction module 17, the remote monitoring and alarm management are provided through the Web end and the mobile phone App, then the automatic or manual operation mode is selected, the temperature and humidity, the illumination are stabilized in the preset range through the real-time adjustment and control of the control execution module 16 in the automatic mode, the remote intervention can be realized through the MCGS touch screen or the App in the manual mode, then the temperature, the humidity and the gas concentration environment parameters in the storage box 13 are collected through the temperature sensor, the humidity sensor and the gas concentration sensor in the data acquisition module, the collected environment parameters are connected with the gathering nodes of the data gathering module, then the Modbus protocol is communicated with the PLC, and the data are stored to the database.

[0034] Then the data are transmitted to the PLC of the control execution module 16, the control instruction is generated through the PID algorithm combined with the PLC, then the control execution module 16 adjusts the preservation environment in the storage box 13 according to the instruction, the PLC continuously compares the measured value with the set value, the alarm is triggered when the limit is exceeded, then the parameter values are transmitted through the 5G gateway and the GPRS module double-channel data transmission of the Internet of Things terminal module 18, the cloud interaction with low delay and high reliability is realized, the user can real-time view the cold storage state and the historical data uploaded to the cloud, the user can remotely modify the parameters through the App, and the user can design the partition management interface through the MCGS configuration software, and the temperature and humidity curves, the equipment state and the alarm information of each unit are real-time displayed.

[0035] And in the control execution module 16 adjusts the environmental parameters, the variable frequency refrigeration machine 11 work produces the cold quantity will be conducted through the cold gas main pipe 21 to each cold gas branch pipe 19, then each storage box 13 according to the opening of the corresponding electric regulating valve 2 of the stored fruit and vegetable species, let it reach the preset value, then will automatically close electric regulating valve 2, if the temperature in a storage box 13 is too high, PLC generates control command through PID algorithm, drive corresponding control execution module 16 to adjust the opening size of electric regulating valve 2, when the gas concentration sensor detection value in a storage box 13 exceeds the preset value, at this time the corresponding storage box 13 needs to be replaced, the exhaust fan 12 and electromagnetic valve 25 linkage, according to the demand distribution of fresh air and circulating air ratio, the exhaust fan 12 works, at the same time the corresponding electric air valve 23 and electromagnetic valve 25 are opened, the old gas in the storage box 13 flows into the gas guide main pipe 24 through the gas guide branch pipe 22 and is finally discharged, at the same time, the new gas outside the world is filtered through the filter 26 and then flows into the storage box 13 through the electromagnetic valve 25, so as to complete the replacement of the gas, and the exhaust fan 12 will adjust the ventilation frequency according to the gas concentration data, maintain the balance of the gas, at the same time can also maintain the humidity balance in the storage box 13.

[0036] The embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications with creative contributions according to the needs after reading the specification, and as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. A vegetable and fruit intelligent cold storage preservation system based on Internet of Things control, comprising a storage body (1), a variable frequency refrigeration machine (11) and an exhaust fan (12) installed on one side of the outer wall of the storage body (1), characterized in that: The rear end of the inner wall of the library body (1) is provided with a plurality of storage boxes (13) made of heat preservation material and distributed at equal intervals along the length direction, a gap is left between the front end of the outer wall of each storage box (13) and the front end of the inner wall of the library body (1) to form a passageway (14), and the upper end of the inner wall of each storage box (13) is provided with an information acquisition module (15), a control execution module (16), a man-machine interaction module (17) and an Internet of Things terminal module (18); The rear end of the outer wall of each storage box (13) is provided with a cold air branch pipe (19) communicated therewith and extending into the interior thereof, one end of each cold air branch pipe (19) extending into the storage box (13) is provided with an electric regulating valve (2) communicated therewith, the air outlet of the variable frequency refrigeration machine (11) is communicated with a cold air main pipe (21) communicated with each cold air branch pipe (19), the lower end of the rear end of the outer wall of each storage box (13) is provided with a gas guide branch pipe (22) communicated therewith and extending into the interior thereof, one end of each gas guide branch pipe (22) extending into the storage box (13) is provided with an electric air valve (23) communicated therewith, the air inlet of the exhaust fan (12) is communicated with a gas guide main pipe (24) communicated with each gas guide branch pipe (22), and the upper end of the outer wall of each storage box (13) is provided with an electromagnetic valve (25) communicated therewith.

2. The vegetable and fruit intelligent cold storage preservation system based on Internet of Things control according to claim 1, characterized in that: The information acquisition module (15) comprises a temperature sensor, a humidity sensor, a gas concentration sensor and a data aggregation module, and can acquire environmental data in real time. 3.The system according to claim 1, characterized in that: The control execution module (16) comprises an S7-1200 PLC and an illumination execution mechanism, and can dynamically adjust environmental parameters through a PID algorithm.

4. The system as claimed in claim 1, wherein the system is characterized in that: The man-machine interaction module (17) comprises an MCGS touch screen, a Web terminal and a mobile phone App, and can support parameter setting, real-time monitoring and alarm information pushing.

5. The system as claimed in claim 1, wherein the system is characterized in that: The Internet of Things terminal module (18) integrates a 5G gateway and a GPRS remote communication unit, and can realize bidirectional transmission of cold storage data and a cloud platform. 6.The system according to claim 1, characterized in that: The upper end of each electromagnetic valve (25) is provided with a filter (26) communicated therewith.

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