CN110068197A - A kind of solar powered semiconductor refrigerating temperature control antistaling box - Google Patents
A kind of solar powered semiconductor refrigerating temperature control antistaling box Download PDFInfo
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- CN110068197A CN110068197A CN201910428900.9A CN201910428900A CN110068197A CN 110068197 A CN110068197 A CN 110068197A CN 201910428900 A CN201910428900 A CN 201910428900A CN 110068197 A CN110068197 A CN 110068197A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000001301 oxygen Substances 0.000 claims abstract description 43
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 43
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 14
- 239000003814 drug Substances 0.000 abstract description 9
- 230000033228 biological regulation Effects 0.000 abstract description 7
- 229940079593 drug Drugs 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 235000012055 fruits and vegetables Nutrition 0.000 abstract description 4
- 235000013311 vegetables Nutrition 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 235000021022 fresh fruits Nutrition 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 18
- 230000005611 electricity Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000012806 monitoring device Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a kind of solar powered semiconductor refrigerating temperature control antistaling boxes, it is related to antistaling box field, the antistaling box is based on heliotechnics using solar powered module and is powered work, energy conservation and environmental protection, main control module detects control module, Temperature and Humidity control module and measurement of oxygen content control module by air pressure and realizes to the air pressure of environment, the regulation of temperature and humidity and oxygen content in case, in combination with semiconductor refrigerating technology, so that each module integrated level is high, energy consumption reduces, the overall volume of antistaling box is reduced；Main control module is also connected with bluetooth module, based on Internet of Things control technology, it may be implemented to the long-range monitoring of antistaling box internal environment and intelligent control, the antistaling box can extend in case the shelf-life of fruits and vegetables, guarantee value of the drug within its validity period, and it is fresh to be mainly adapted to fresh fruit of vegetables, the preservation of costly medicine in logistics transportation and storing warehouse.
Description
Technical field
The present invention relates to antistaling box field, especially a kind of solar powered semiconductor refrigerating temperature control antistaling box.
Background technique
For a long time, the fresh-keeping facility of post harvest transport and not matching for technology are to restrict the main reason for fruits and vegetables efficiently circulate,
This causes China's postharvest fruit and vegetable proportion of goods damageds to be up to 20%~30%, the annual fruits and vegetables agricultural product for rotting loss be up to 1.42 hundred million tons with
On, overbalance 100,000,000,000 yuans.On the other hand, according to the requirement of Pharmacy Business Quality Management Regulations, enterprise operation
In the storage received, checked and accepted, store, conserve, outbound, the links such as transport need to be indicated according to Key works Drug packing when refrigeration, freezing drug
Hiding requires, using facilities and equipment, technical method and the operating instruction by verifying confirmation, to refrigeration, freezing drug stock control process
In temperature and humidity situation, temperature regime in transportational process carry out real-time automatic monitoring and control, guarantee the storage and transportation environment of drug
Temperature and Humidity Control is within the specified scope.The preservation for usually carrying out fresh fruit of vegetables and costly medicine using antistaling box at present is fresh, but often
The instrument of the antistaling box of rule is many and diverse, leads to that entire antistaling box is bulky, inconvenient movement, and energy consumption is higher, intelligence degree
Also not high enough.
Summary of the invention
The present inventor regarding to the issue above and technical need, proposes a kind of solar powered semiconductor refrigerating temperature control and protects
Fresh case, the antistaling box combine heliotechnics, semiconductor refrigerating technology and Internet of Things control technology, energy conservation and environmental protection, module collection
It is high at degree, and remotely monitoring and intelligent control may be implemented.
Technical scheme is as follows:
A kind of solar powered semiconductor refrigerating temperature control antistaling box, including fresh-keeping box body, the semiconductor refrigerating temperature control
Antistaling box further include: solar powered module, main control module, TFT LCD MODULE, key control module, buzzer warning
Module, bluetooth module, air pressure detection control module, Temperature and Humidity control module and measurement of oxygen content control module；
Solar powered module includes at least solar panel, and solar panel is arranged on fresh-keeping box body, too
Positive energy power supply module connects main control module, TFT LCD MODULE, key control module, buzzer warning module, bluetooth mould
Block, air pressure detection control module, Temperature and Humidity control module and measurement of oxygen content control module are powered；
Main control module is separately connected TFT LCD MODULE, key control module, buzzer warning module and bluetooth mould
Block, TFT LCD MODULE, key control module and buzzer warning module are arranged on fresh-keeping box body；
It includes barometer and pressure control unit that air pressure, which detects control module, and the inside of fresh-keeping box body is arranged in barometer
And main control module is connected, pressure control unit includes the vacuum pump controlled by the first relay and the gas that is controlled by the second relay
Press pump, main control module connect and control the first relay and the second relay, and vacuum pump is connected to fresh-keeping box body with pulsometer；
Temperature and Humidity control module includes Temperature Humidity Sensor and Temperature and Humidity Control unit, and Temperature Humidity Sensor setting exists
The inside of fresh-keeping box body simultaneously connects main control module, and Temperature and Humidity Control unit includes semiconductor cooling device and humid control dress
It sets, semiconductor cooling device includes the radiator fan and cooling piece controlled simultaneously by third relay, and main control module is connected and controlled
Third relay processed, radiator fan are mounted on fresh-keeping box body, and the inside of fresh-keeping box body is arranged in cooling piece；Humid control
Device includes the humidifier controlled by the 4th relay and the dehumidifier controlled by the 5th relay, and main control module is connected and controlled
4th relay and the 5th relay, humidifier and dehumidifier are connected to fresh-keeping box body；
Measurement of oxygen content control module includes oxygen sensor and oxygen content control unit, and oxygen sensor is arranged fresh-keeping
The inside of box body simultaneously connects main control module by signal amplification circuit, and oxygen content control unit includes pneumatic operated valve and nitrogen gas tank,
Nitrogen gas tank is connected to fresh-keeping box body by pneumatic operated valve, and pneumatic operated valve is controlled by the 6th relay, and main control module connects and controls the 6th
Relay.
Its further technical solution is, solar powered module further include current transducer, battery, Voltage stabilizing module and
DC-DC module, Voltage stabilizing module are based on LM7805CT chip, and DC-DC module is based on LM2596 chip, solar panel connection electricity
The input terminal of flow transmitter, the charge port of the output end connection battery of current transducer, the discharge port of battery connect pressure stabilizing
The input terminal of module, the input terminal of the output end connection DC-DC module of Voltage stabilizing module, the output end of DC-DC module connect remaining
Modules are powered.
Its further technical solution is that main control module uses STM32F103C8T6-EP chip；Barometer uses
BMP180 barometer mould group, BMP180 barometer mould group be based on GY68BMP180 chip, the SCL pin of GY68BMP180 chip and
PB3, PB4 pin of the SDA pin respectively as the 3rd pin of BMP180 barometer mould group and the 4th pin connection main control module；Temperature
Humidity sensor uses DTH11 sensor, the PB1 pin of the 2nd foot connection main control module of DTH11 sensor；Oxygen sensor
Using BWO2-A2 sensor, the PA0 pin of the 3rd foot connection main control module of BWO2-A2 sensor；Bluetooth module uses HC-05
Bluetooth mould group, the PA2 pin of the UART_TXD pin connection main control module of HC-05 bluetooth mould group, HC-05 bluetooth mould group
The PA3 pin of UART_RXD pin connection main control module.
The method have the benefit that:
This application discloses a kind of solar powered semiconductor refrigerating temperature control antistaling box, which utilizes solar energy
It is each electricity consumption module for power supply, energy conservation and environmental protection that power conversion technology, which absorbs pollution-free luminous energy to be converted into electric energy,；The antistaling box is based on
Sensing detection technology may be implemented to temperature and humidity, oxygen content and the regulation of air pressure in case, and using semiconductor refrigerating technology into
Row refrigeration, modules integrated level is high, and implementation is simple, reduces the overall volume of antistaling box；The antistaling box is based on Internet of Things
Long-range monitoring and intelligent control to environment in case may be implemented in net control principle；The antistaling box combination photoelectric conversion technique, storage
It can technology, semiconductor refrigerating technology, pressure stabilizing reduction technology, sensing detection technology, the communication technology, feedback control technology and number
The intelligent control to environmental parameter in case may be implemented in pid control algorithm, so as to extend in case the shelf-life of vegetables and fruits, protect
Demonstrate,prove the value in case in the validity period of drug, fresh fruit of vegetables, valuable medicine of the antistaling box to logistics transportation and storing warehouse field
The preservation of product is fresh to use meaning with important, has the good scope of application and development prospect.
Detailed description of the invention
Fig. 1 is the circuit structure block diagram of semiconductor refrigerating temperature control antistaling box disclosed in the present application.
Fig. 2 is the circuit diagram of the Voltage stabilizing module in the application.
Fig. 3 is the circuit diagram of the DC-DC module in the application.
Fig. 4 is the part circuit structure wiring diagram of semiconductor refrigerating temperature control antistaling box disclosed in the present application.
Fig. 5 is the barometrical circuit diagram in the application.
Fig. 6 is the electric operation control circuit figure of the main control module control relay in the application.
Fig. 7 is the circuit diagram of the signal amplification circuit in the application.
Fig. 8 is the circuit diagram of the bluetooth module in the application.
Fig. 9 is the manipulation flow diagram of the main control module in the application.
Specific embodiment
The following further describes the specific embodiments of the present invention with reference to the drawings.
This application discloses a kind of solar powered semiconductor refrigerating temperature control antistaling boxes, including fresh-keeping box body, please join
The circuit block diagram of Fig. 1 is examined, the electric control part of the semiconductor refrigerating temperature control antistaling box further include: solar powered module, master control mould
Block, TFT LCD MODULE, key control module, buzzer warning module, bluetooth module, air pressure detection control module, warm and humid
Degree detection control module, measurement of oxygen content control module and air pressure detect control module.
Solar powered module is used to be powered for remaining each electricity consumption module of electric control part, and Fig. 1 illustrates only the sun
The schematic diagram of energy power supply module connection main control module.Solar powered module includes solar panel, current transducer, electric power storage
Pond, Voltage stabilizing module and DC-DC module, solar panel connect the input terminal of current transducer, the output end of current transducer
The charge port of battery, the input terminal of the discharge port connection Voltage stabilizing module of battery are connected, the output end of Voltage stabilizing module connects DC-
The input terminal of DC module, the output end of DC-DC module connect remaining modules and are powered.Solar panel is placed in sun
Photovoltaic energy conversion is carried out in the environment of light abundance, can be usually set up directly on solar panel on fresh-keeping box body,
Solar panel is based on solar energy power generating principle and generates electricity, when sunlight (or other light) is irradiated to solar power generation
When on plate, solar panel absorbs luminous energy and generates photo-generate electron-hole pairs, in the work of solar panel built in field
Under, the electrons and holes that illumination generates, which are separated, to be come, and two kinds of different electrical charges are assembled to battery both ends, photovoltage
Therefore it generates, i.e., it is so-called " photovoltaic effect ".The electric energy that solar panel generates is transported to storage after current transducer
The charge port of battery carries out electric energy storage.Pass through at the pressure stabilizing of Voltage stabilizing module in the electric energy of electricity consumption loop feature, battery output
After reason after the decompression of DC-DC module, voltage needed for exporting each module is powered.Wherein, referring to FIG. 2, pressure stabilizing mould
Block is based on LM7805CT chip, and the positive and negative electrode of the discharge port of battery is separately connected the LINE VOLTAGE of LM7805CT chip
Pin and COMMON pin, in order to prevent self-oscillation add a C1=0.33uF before the input terminal of LM7805CT chip
Capacitor；In addition to improving the temporal properties of output, add the capacitor of a C2=1uF in the output end of LM7805CT chip,
Voltage after finally obtaining pressure stabilizing on load R1, the VERG pin and COMMON pin of LM7805CT chip by capacitor C2 and
Load R1 is respectively connected to the positive and negative electrode of DC-DC module.Referring to FIG. 3, DC-DC module is based on LM2596 chip, Voltage stabilizing module is defeated
12V DC voltage out is connected after electrolytic capacitor C3 and C4 with the IN pin of LM2596 chip, and the OFF of LM2596 chip draws
Foot and GND pin ground connection, OUT pin are filtered by inductance L1, and after the stabilization for carrying out output voltage in parallel with zener diode,
It is connected with other each electricity consumption modules, other peripheral circuits of DC-DC module please refer to Fig. 3.
Main control module is the core of entire electric control part, and the application uses STM32F103C8T6-EP chip,
STM32F103C8T6-EP chip is communicated by multiple serial ports, the port ADC with other modules, is calculated in conjunction with PID control
Method can be by the various state modulators influential on fresh-keeping effect inside antistaling box near setting value, and the application passes through air pressure
Detection control module, Temperature and Humidity control module and measurement of oxygen content control module may be implemented to antistaling box box house
Air pressure, the regulation of temperature and humidity and oxygen content, please refer to circuit diagram shown in Fig. 4:
Air pressure detects control module for realizing the regulation of the air pressure to antistaling box box house, and air pressure detects control module
Including barometer and pressure control unit, barometer is arranged in the inside of fresh-keeping box body and connects main control module, in the application
Barometer uses BMP180 barometer mould group, and the 1st pin of BMP180 barometer mould group connects 3.3V DC power supply, the 2nd pin
Ground connection, the 3rd pin and the 4th pin are separately connected PB3, PB4 pin of STM32F103C8T6-EP chip.BMP180 barometer mould
The circuit diagram of group referring to FIG. 5, the core of BMP180 barometer mould group is GY68BMP180 chip, GY68BMP180 chip
VDD pin and VDDIO pin are all connected with 3.3V DC power supply, and VDD pin and VDDIO pin pass through the electricity of two 4.7K Ω respectively
Resistance is connected with the SCL pin of GY68BMP180 chip and SDA pin, the GND pin ground connection of GY68BMP180 chip, CBS pin
With SDO pin floating, 3rd pin of the SCL pin and SDA pin of GY68BMP180 chip as the BMP180 barometer mould group
Main control module is connected with the 4th pin.Barometer senses atmospheric pressure value and is sent to main control module, so that main control module passes through air pressure
Meter detects the air pressure of antistaling box box house.Main control module is according to the movement of the atmospheric pressure value control pressure control unit detected
To regulate and control the air pressure of antistaling box box house, pressure control unit include the vacuum pump controlled by the first relay and by second after
The pulsometer of electrical equipment control, main control module connect and control the first relay and the second relay, and vacuum pump and pulsometer connect
Lead to fresh-keeping box body, the relay of the application uses HK19F-DC5V relay, and main control module connects and controls the first relay
Circuit be conventional application circuit, the circuit diagram in the application is referring to FIG. 6, the base stage of triode Q1 is as defeated in the circuit diagram
Enter to connect the respective pins of main control module, in the citing, Fig. 6 works as main control module by taking the PB8 pin for connecting main control module as an example
When output signal makes first actuating of relay, vacuum pump J work once electrified is evacuated from antistaling box box house, reduces fresh-keeping box body
Air pressure inside.Similar, when main control module output signal makes second actuating of relay, pulsometer work once electrified is to fresh-keeping box body
Inner inflatable increases the air pressure of antistaling box box house, the circuit structure and Fig. 6 class that main control module is pumped by relay control pressure
Seemingly, the different pins for being connected to main control module, the application no longer illustrated exemplary are only inputted.
Regulation of the Temperature and Humidity control module for realizing the temperature and humidity to antistaling box box house, Temperature and Humidity control
Molding block includes Temperature Humidity Sensor and Temperature and Humidity Control unit, and the inside of fresh-keeping box body and company is arranged in Temperature Humidity Sensor
Main control module is connect, the Temperature Humidity Sensor in the application uses DTH11 sensor, and the 1st foot connection 3.3V of DTH11 sensor is straight
Galvanic electricity source, the 2nd foot connect the PB1 pin of STM32F103C8T6-EP chip, and the 3rd foot is hanging, the 4th foot ground connection, Temperature and Humidity
Control module senses temperature and humidity value and is sent to main control module so that main control module detected by Temperature Humidity Sensor it is fresh-keeping
Temperature and humidity value inside box body.Main control module is according to the movement of the temperature and humidity value control Temperature and Humidity Control unit detected to adjust
The temperature and humidity for controlling antistaling box box house, the adjusting to the temperature of antistaling box box house are mainly to need to reduce inside antistaling box
Temperature, therefore Temperature and Humidity Control unit includes semiconductor cooling device and humidity conditioner, and semiconductor cooling device includes
The radiator fan and cooling piece controlled simultaneously by third relay, radiator fan are mounted on fresh-keeping box body, cooling piece setting
In the inside of fresh-keeping box body, main control module connects and controls third relay, when main control module controls the third actuating of relay
When, radiator fan and cooling piece obtain electric, synchronous working simultaneously and cool down to antistaling box box house, to realize to antistaling box
The adjusting of box interior temperature, the schematic diagram that main control module controls third relay is similar with Fig. 6, and the application no longer individually shows
Out.Humidity conditioner includes the humidifier controlled by the 4th relay and the dehumidifier controlled by the 5th relay, temperature and humidity
Sensor is connected to fresh-keeping box body with dehumidifier with humidifier, and main control module connects and controls the 4th relay and the 5th relay
Device, when main control module controls four actuating of relay, humidifier work once electrified humidifies antistaling box box house, works as master
When controlling module five actuating of relay of control, dehumidifier work once electrified dehumidifies to antistaling box box house, thus realization pair
The adjusting of antistaling box box house humidity.Main control module controls the 4th relay and the schematic diagram of the 5th relay is similar with Fig. 6,
The application is no longer separately shown.
Regulation of the measurement of oxygen content control module for realizing the oxygen content to antistaling box box house, measurement of oxygen content control
Molding block includes oxygen sensor and oxygen content control unit, and oxygen sensor is arranged in the inside of fresh-keeping box body and passes through letter
Number amplifying circuit connects main control module, and the oxygen sensor in the application uses BWO2-A2 sensor, BWO2-A2 sensor
1st foot connects 3.3V DC power supply, the 2nd foot ground connection, the 3rd foot connection signal amplifying circuit.Signal amplification circuit is to oxygen sensor
The data that device detects amplify, and the accuracy of detection numerical value can be improved, main control module is sent to after processing, so that master control
Module detects the oxygen content of antistaling box box house by oxygen sensor.Signal amplification circuit is based on LM358 chip, specifically
Circuit diagram referring to FIG. 7, its input terminal IN connection oxygen sensor the 3rd foot, output end OUT connection STM32F103C8T6-EP
The PA0 pin of chip.Main control module is fresh-keeping to regulate and control according to the movement of the oxygen-containing magnitude control oxygen content control unit detected
Oxygen content inside box body is typically required the oxygen content for reducing antistaling box box house, oxygen content to the adjusting of oxygen content
Control unit includes pneumatic operated valve and nitrogen gas tank, and nitrogen gas tank is connected to fresh-keeping box body by pneumatic operated valve, and pneumatic operated valve is by the 6th relay
Control, main control module connect and control the 6th relay, and when main control module controls six actuating of relay, pneumatic operated valve obtains electric beat
It opens, is filled with nitrogen to antistaling box box house, to reduce the oxygen content of antistaling box box house humidity.Main control module control the
The schematic diagram of six relays is similar with Fig. 6, and the application is no longer separately shown.
Main control module is also connected with TFT LCD MODULE, and TFT LCD MODULE is a kind of thin film transistor,
Refer to that each liquid crystal pixel on liquid crystal display is driven by thin film transistor (TFT) integrated behind, so as to do
To high speed, high brightness, high contrast display screen information, the TFT model that the application selects belongs to active matrix liquid crystal and shows
Device, as shown in figure 4, TFT LCD MODULE is connected with STM32F103C8T6-EP chip according to the corresponding pin of Fig. 4.Work as master
When control module detects air pressure in fresh-keeping box body, temperature and humidity and oxygen content, it can be carried out by TFT LCD MODULE same
Step display, so as to the environment of user monitoring antistaling box box house.
Main control module is also connected with key control module, referring to FIG. 4, key control module includes several control buttons,
Each control button is connected with 10K Ω pull-up resistor, and is connected in the respective pins of main control module, such as Fig. 4 to include three
For control button S1, S2 and S3, three control buttons are connected with 10K Ω pull-up resistor respectively and are consecutively connected to main control module
PA5, PA6 and PA7 pin, the change operation of the setting value of parameters can be carried out by key control module.
Main control module is also connected with buzzer warning module, and buzzer warning module includes buzzer B1 and NPN type triode
Q1, buzzer B1 are connected with the emitter of NPN type triode Q1, and grounded collector, the base stage of NPN type triode Q1 connects master control
The PB7 pin of module.When main control module detects that air pressure, temperature and humidity and oxygen content in fresh-keeping box body have at least one to exceed
When setting value, super width signal can be issued to buzzer warning module, buzzer warning module receives the super of main control module transmission
Width signal simultaneously carries out buzzing alarm.
Main control module is also connected with bluetooth module, and the serial ports connection of bluetooth module and main control module carries out the transmission of data and connects
It receives, which is connected with the monitoring device bluetooth-capable of mobile phone etc, and user can be by monitoring device to this
Antistaling box is remotely monitored, and one side main control module can send the parameter in fresh-keeping box body inner ring border by bluetooth in real time
To monitoring device remotely to monitor real-time parameter, on the other hand, user directly can carry out parameters by monitoring device
Setting value change operation.Referring to FIG. 8, the bluetooth module of the application is based on HC-05 bluetooth mould group, HC-05 bluetooth mould group
UART_TXD pin connection STM32F103C8T6-EP chip PA2 pin, the UART_RXD pin of HC-05 bluetooth mould group connects
The PA3 pin for connecing STM32F103C8T6-EP chip please refers to the corresponding pin connection relationship of Fig. 8 and Fig. 4.In addition to this, HC-
The PIO8 pin of 05 bluetooth mould group is connected and is grounded with resistance and indicator light LED, can judge bluetooth mould by indicator light LED
Whether block currently works normally.
The control process of the semiconductor refrigerating temperature control antistaling box is approximately as please referring to Fig. 9: firstly, system carry out it is initial
Change, then shows mark position 0, be delayed 2s, judge whether to reset key button, if so, system initialization step is returned to, if
No, then TFT LCD MODULE shows currently detected parameters, judges whether bluetooth connects, if connection, carries out hand
If the control of machine connecting detection judges whether key control module has by key pressing, if having by key pressing, TFT liquid crystal not connected
The setting value that display module is shown, which accordingly changes and then jumps to, judges whether temperature exceeds setting value, if without key pressing is pressed,
It jumps directly to judge whether temperature exceeds setting value；If detecting, box interior temperature beyond setting value, controls buzzer
Alarm module issues alarm, then controls the third actuating of relay, and radiator fan and cooling piece obtain electric, synchronous working simultaneously and carry out
Refrigeration, if box interior temperature without departing from setting value, successively judges whether humidity, oxygen content, air pressure exceed setting value, if super
Setting value out, it is same to control actuating of relay adjusting parameter, and loop to determine and whether meet actuating of relay condition, then return
To judging whether reset key is pressed, hereafter the continuous cycle operation of program, is realized to the dynamic of the environmental parameter of antistaling box box house
State control.
Above-described is only the preferred embodiment of the application, and present invention is not limited to the above embodiments.It is appreciated that this
The other improvements and change that field technical staff directly exports or associates without departing from the spirit and concept in the present invention
Change, is considered as being included within protection scope of the present invention.
Claims (3)
1. a kind of solar powered semiconductor refrigerating temperature control antistaling box, including fresh-keeping box body, which is characterized in that described partly to lead
The cold temperature control antistaling box of system further include: solar powered module, main control module, TFT LCD MODULE, key control module,
Buzzer warning module, bluetooth module, air pressure detection control module, Temperature and Humidity control module and measurement of oxygen content control
Module；
The solar powered module includes at least solar panel, and the solar panel is arranged in the antistaling box case
On body, the solar powered module connects the main control module, TFT LCD MODULE, key control module, buzzer report
Alert module, bluetooth module, air pressure detection control module, Temperature and Humidity control module and measurement of oxygen content control module；
The main control module is separately connected the TFT LCD MODULE, key control module, buzzer warning module and bluetooth
Module, the TFT LCD MODULE, key control module and buzzer warning module are arranged on the fresh-keeping box body；
The air pressure detection control module includes barometer and pressure control unit, and the barometer is arranged in the antistaling box case
The inside of body simultaneously connects the main control module, and the pressure control unit includes the vacuum pump controlled by the first relay and by
The pulsometer of two relays control, the main control module connects and controls first relay and the second relay, described true
Sky pump is connected to the fresh-keeping box body with the pulsometer；
The Temperature and Humidity control module includes Temperature Humidity Sensor and Temperature and Humidity Control unit, and the Temperature Humidity Sensor is set
It sets the inside in the fresh-keeping box body and connects the main control module, the Temperature and Humidity Control unit includes semiconductor refrigerating dress
It sets and humidity conditioner, the semiconductor cooling device includes the radiator fan controlled simultaneously by third relay and refrigeration
Piece, the main control module connect and control the third relay, and the radiator fan is mounted on the fresh-keeping box body, institute
State the inside that the fresh-keeping box body is arranged in cooling piece；The humidity conditioner includes the humidification controlled by the 4th relay
Device and the dehumidifier controlled by the 5th relay, the main control module connect and control the 4th relay and the 5th relay
Device, the humidifier are connected to the fresh-keeping box body with dehumidifier；
The measurement of oxygen content control module includes oxygen sensor and oxygen content control unit, and the oxygen sensor setting exists
The inside of the fresh-keeping box body simultaneously connects the main control module by signal amplification circuit, and the oxygen content control unit includes
Pneumatic operated valve and nitrogen gas tank, the nitrogen gas tank are connected to the fresh-keeping box body by the pneumatic operated valve, the pneumatic operated valve by the 6th after
Electrical equipment control, the main control module connect and control the 6th relay.
2. semiconductor refrigerating temperature control antistaling box according to claim 1, which is characterized in that the solar powered module is also
Including current transducer, battery, Voltage stabilizing module and DC-DC module, the Voltage stabilizing module is based on LM7805CT chip, described
DC-DC module is based on LM2596 chip, and the solar panel connects the input terminal of the current transducer, and the electric current becomes
The charge port for sending the output end of device to connect the battery, the discharge port of the battery connect the input of the Voltage stabilizing module
End, the output end of the Voltage stabilizing module connect the input terminal of the DC-DC module, and the output end of the DC-DC module connects it
Remaining modules are powered.
3. semiconductor refrigerating temperature control antistaling box according to claim 1 or 2, which is characterized in that the main control module uses
STM32F103C8T6-EP chip；The barometer uses BMP180 barometer mould group, and the BMP180 barometer mould group is based on
GY68BMP180 chip, the SCL pin and SDA pin of the GY68BMP180 chip are respectively as the BMP180 barometer mould
The 3rd pin and the 4th pin of group connect PB3, PB4 pin of the main control module；The Temperature Humidity Sensor is passed using DTH11
2nd foot of sensor, the DTH11 sensor connects the PB1 pin of the main control module；The oxygen sensor uses BWO2-
3rd foot of A2 sensor, the BWO2-A2 sensor connects the PA0 pin of the main control module；The bluetooth module uses
The UART_TXD pin of HC-05 bluetooth mould group, the HC-05 bluetooth mould group connects the PA2 pin of the main control module, HC-05
The UART_RXD pin of bluetooth mould group connects the PA3 pin of the main control module.
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| CN201910428900.9A CN110068197A (en) | 2019-05-22 | 2019-05-22 | A kind of solar powered semiconductor refrigerating temperature control antistaling box |
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| CN201910428900.9A CN110068197A (en) | 2019-05-22 | 2019-05-22 | A kind of solar powered semiconductor refrigerating temperature control antistaling box |
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| CN110068197A true CN110068197A (en) | 2019-07-30 |
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| CN201910428900.9A Pending CN110068197A (en) | 2019-05-22 | 2019-05-22 | A kind of solar powered semiconductor refrigerating temperature control antistaling box |
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