CN213203009U - Efficient, closed-loop and intelligent expanding culture system for microalgae - Google Patents

Abstract

The utility model provides a high-efficient, closed loop, intelligent expand system of banking up with earth for declining algae, include: the microalgae culture expanding device comprises a microalgae culture expanding container, a control circuit, a sensor assembly, an LCD touch screen, an LED lamp strip, a heating rod and an air pump; the sensor assembly, the LCD touch screen, the LED lamp strip, the heating rod and the air pump are electrically connected with the control circuit; the control circuit includes: the intelligent monitoring system comprises a main control circuit, a power supply circuit, a clock circuit, a storage circuit, an alarm circuit, a digital sensor interface circuit, a 485 communication interface circuit, a wireless module interface circuit, a PWM dimming circuit and a relay control circuit; the clock circuit, the storage circuit, the alarm circuit, the digital sensor interface circuit, the 485 communication interface circuit, the wireless module interface circuit, the PWM dimming circuit and the relay control circuit are all electrically connected with the master control circuit. The utility model discloses a carry out high-efficient, closed loop, intelligent expanding to single, the pure little algae of planting and cultivate, improved efficiency and quality that the algae species was cultivateed.

Description

Efficient, closed-loop and intelligent expanding culture system for microalgae

Technical Field

The utility model relates to a little algae cultivation field especially relates to a high-efficient, closed loop, intelligent expand system of banking up with earth for declining algae.

Background

Microalgae is a group of algae capable of photosynthesis, and organic matters and oxygen generated by efficient photosynthesis of microalgae cells create conditions for survival of other organisms. Microalgae cells are rich in various high-added-value biological substances such as proteins, amino acids, carbohydrates, vitamins, antibiotics, unsaturated fatty acids, polysaccharides and the like, are important resources such as human food, medicines, fuels, refined industrial materials and the like, and have wide development potential.

With the deep popularization of intensive culture modes of aquaculture industry in China, most of aquaculture water bodies are in eutrophication state all the year round, water bloom is frequently outbreak, the healthy development of the aquaculture industry is severely restricted, and the drug administration may bring new pollution and does not accord with the concept of ecological culture. The microalgae can be used as bait for raising seedlings, provides enough nutrition and resistance for fish fries, shrimp and crab fries and the like, can absorb elements such as nitrogen and phosphorus in water, reduces eutrophication water culture of a water body, purifies water quality and plays a role in regulating water.

The key problem of the development and utilization of microalgae resources is how to efficiently culture microalgae cells. There are many problems in large scale propagation at present: the algae cultivation environment is not monitored in real time and controlled effectively and intelligently, and is mostly controlled manually, environmental parameters such as illumination intensity, temperature, PH and the like are unreasonable, the parameters have obvious changes of time and space (latitude and water depth) in each growth period of the microalgae, the algae cultivation time is observed by experience, the algae cultivation efficiency is low, the purity is low, and the algae cultivation environment is unstable.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a high-efficiency, closed-loop and intelligent expanding culture system for microalgae; the master control circuit calculates the culture period of the microalgae according to the time information provided by the real-time clock, and correspondingly regulates and controls the microalgae environment according to the configuration information and the real-time sensing data, thereby completing closed-loop and intelligent control.

An efficient, closed-loop and intelligent expanding culture system for microalgae is characterized in that: the method comprises the following steps: the microalgae culture expanding device comprises a microalgae culture expanding container, a control circuit, a sensor assembly, an LCD touch screen, an LED lamp strip, a heating rod and an air pump;

the sensor assembly, the LCD touch screen, the LED lamp strip, the heating rod and the air pump are electrically connected with the control circuit;

the control circuit includes: the intelligent monitoring system comprises a main control circuit, a power supply circuit, a clock circuit, a storage circuit, an alarm circuit, a digital sensor interface circuit, a 485 communication interface circuit, a wireless module interface circuit, a PWM dimming circuit and a relay control circuit;

the power supply circuit is used for providing power supply for other circuits of the system; the clock circuit, the storage circuit, the alarm circuit, the digital sensor interface circuit, the 485 communication interface circuit, the wireless module interface circuit, the PWM dimming circuit and the relay control circuit are all electrically connected with the master control circuit.

Further, the LED lamp strip is arranged on the periphery outside the microalgae expanding culture container; the heating rod is arranged in the microalgae expanding culture container; the air outlet end of the air pump is connected with the nano aeration pipe, and the nano aeration pipe is arranged at the bottom in the microalgae propagation container; the LCD touch screen is arranged on the outer surface of the microalgae propagation container.

Further, the sensor assembly includes: a light intensity sensor, a temperature sensor, a PH sensor and a chlorophyll sensor; the illuminance sensor is arranged between the microalgae expanding culture container and the LED lamp strip; the temperature sensor, the PH sensor and the chlorophyll sensor are all arranged inside the microalgae propagation container;

the illuminance sensor and the temperature sensor are both electrically connected with the digital sensor interface circuit; the LED lamp strip is electrically connected with the PWM dimming circuit; the heating rod and the air pump are both electrically connected with the relay control circuit; the PH sensor, the chlorophyll sensor and the LCD touch screen are electrically connected with the 485 communication interface circuit.

Further, a main control chip U1 of the main control circuit adopts an STM32F103RET6 single-chip microcomputer.

Further, the clock chip U5 adopts a DS1302 chip; the clock circuit further includes: the resistor R301, the resistor R302, the resistor R303, the resistor R304, the capacitor C30, the capacitor C31 and the crystal oscillator Y3;

the No. 1 pin of the DS1302 chip is connected with a 3.3V power supply, the No. 2 pin is connected with a capacitor C30 in series and then grounded, the No. 3 pin is connected with a capacitor C31 in series and then grounded, and a crystal oscillator Y3 is connected between the No. 2 pin and the No. 3 pin; pin 4 of the DS1302 chip is grounded; the No. 5 pin of the DS1302 chip is connected with one end of the resistor R301, the other end of the resistor R301 is connected with one end of the resistor R302, the other end of the resistor R302 is connected with the No. 7 pin of the DS1302 chip, and a 3.3V power supply is connected between the resistor R301 and the resistor R302; the No. 6 pin of the DS1302 chip is respectively connected to one end of a resistor R303 and a No. 24 pin DS-DQ of an STM32F103RET6 singlechip, and the other end of the resistor R303 is connected to a 3.3V power supply; the No. 5 pin and the No. 7 pin of the STM32F103RET6 singlechip are also connected to the No. 25 pin DS-RST and the No. 23 pin DS-SCLK of the STM32F103RET6 singlechip respectively; and a No. 8 pin of the DS1302 chip is connected with a resistor R304 in series and then is connected to a No. 1 pin BAT of the STM32F103RET6 singlechip.

Further, the power supply circuit includes: a DC 12V-to-DC 5V circuit, a DC 12V-to-4.3V circuit, and a 2-way DC 5V-to-3.3V circuit; the chip U7 of the circuit for converting DC12V into DC5V adopts an LM2596S-5.0DCDC chip; the chip U2 of the circuit from DC12V to 4.3V adopts an LM2596S-ADJ DCDC chip, and the chip U6 and the chip U9 of the circuit from 2-path DC5V to 3.3V both adopt AMS1117-3.3LDO chips; the storage circuit uses an EEPROM memory, and the chip U11 of the storage circuit adopts an AT24C64 chip.

Further, the wireless module interface circuit comprises an interface P6, wherein the P6 is accessed to a GPRS module and can be remotely controlled by a mobile phone; the first pin of the P6 is connected with a 4.3V power supply, the second pin is connected with the 14 pin of the STM32F103RET6 singlechip, the 3 pin is connected with the 15 pin of the STM32F103RET6 singlechip, the 4 pin is connected with the 16 pin of the STM32F103RET6 singlechip, the 5 pin is connected with the 17 pin of the STM32F103RET6 singlechip, and the 6 pin is grounded;

the alarm circuit comprises a piezoelectric type active buzzer U4, and a U4 is driven by an NPN triode Q2.

Further, the PWM dimming circuit includes: the MOS tube driving circuit comprises a MOS tube driving chip U3, a first MOS field effect tube Q1, a second MOS field effect tube Q6, a resistor R9, a resistor R10, a diode D2, a diode D3 and a fuse F6; u3 adopts TC4427 chip, Q1 and Q6 both adopt DTK 0403; pin 2 of the TC4427 is respectively connected to pin BUFF No. 40 of the STM32F103RET6 singlechip and one end of a resistor R12, pin 4 is respectively connected to pin 41 of the STM32F103RET6 singlechip, LED _ PWM, and one end of a resistor R11, and the other end of the resistor R11 is connected to the other end of the resistor R12 and pin 3 of U3; pin 7 of U3 is electrically connected to the alarm circuit; a pin No. 5 of the U3 is connected to one end of a resistor R9, the other end of the resistor R9 is connected to one end of a resistor R10, the G pole of Q1 and the G pole of Q6 respectively, the other end of the resistor R10 is connected to the S pole of Q1, the S pole of Q6 and the anode of a diode D3 respectively, the D pole of Q1 is connected to the anode of a diode D2, the D pole of Q6 and the cathode of a diode D3 respectively, the cathode of the diode D2 is connected with a resistance wire F6 in series and then is connected with the anode LEDOUT + of the LED light strip interface circuit, and the cathode of the diode D3 is also connected with the cathode LEUT DO-;

the LED lamp strip interface circuit at the rear stage of the PWM dimming circuit is divided into five paths, each branch circuit contains a fuse, and the LED lamp strip interface circuit has a one-path protection function;

the relay control circuit comprises three groups of optical coupling isolation relay circuits: the optical coupling module U8, the optical coupling module U10 and the optical coupling module U12;

the main control circuit is electrically connected with the input ends of U8, U10 and U12 through a pin No. 8, a pin No. 9 and a pin No. 10 of an STM32F103RET6 singlechip respectively so as to output signals to the optical coupling modules U8, U10 and U12; the output ends of U8, U10 and U12 drive a relay KR1, a relay KR2 and a relay KR3 through a triode Q3, a triode Q4 and a triode Q5 respectively, so that the function of controlling strong electric equipment by weak current is realized;

u8, U10 and U12 all adopt PC817 optical coupling modules; q3, Q4 and Q5 all adopt S8050NPN triodes;

the output ends of the relay KR1, the relay KR2 and the relay KR3 are respectively connected with a light emitting diode LED-1, a light emitting diode LED-2 and a light emitting diode LED-3 for indicating the working state of the AC220V output by three-way control; the output end of the relay KR1 is connected to the light emitting diode LED-1 through a rectifier diode D8 and a current limiting resistor R30; the output end of the relay KR2 is connected to the light emitting diode LED-2 through a rectifier diode D10 and a current limiting resistor R40; the output terminal of the relay KR3 is connected to the light emitting diode LED-3 through a rectifier diode D13 and a current limiting resistor R46.

Further, the digital sensor interface circuit includes: one IIC interface P3 is connected to the illuminance sensor; one single bus interface J2 is connected to a temperature sensor; the system comprises a light intensity sensor, a temperature sensor, a light intensity sensor and a temperature sensor, wherein the light intensity sensor is BH1750FVI and provides an environment light intensity parameter for the system, and the temperature sensor is DS18B20 and provides an environment temperature parameter for the system; the pin No. 1 of the interface P3 is grounded after being connected with a capacitor C29 in series, a resistor R54 and a resistor R55 are connected between the pin No. 2 and the pin No. 3 in series, a 3.3V power supply is connected between the resistor R54 and the resistor R55, and the pin No. 4 is grounded; the No. 1 pin of the interface P3 is also connected with a 3.3V power supply, and the No. 2 pin and the No. 3 pin are also respectively connected with the No. 34 pin and the No. 35 pin of the STM32F103RET6 single chip microcomputer; pin 1 of interface J2 is grounded, pin 2 is connected to the one end of resistance R15 and resistance R16 respectively, and the other end of resistance R16 switches on the 3.3V power, and the other end of resistance R15 is connected to pin 3 of interface J2, the one end and the 5V power of electric capacity C10 respectively, and the other end of electric capacity C10 is grounded.

Furthermore, the 485 communication interface circuit comprises two external 485 interface circuits, namely an RS485 sensor interface circuit and an RS485LCD touch screen interface circuit, and the master control chip is an MAX3485 chip;

wherein, RS485LCD touch-sensitive screen interface circuit includes: the chip comprises an interface P7, a first MAX3485 chip U14, a resistor R56, a resistor R57, a resistor R58 and a resistor R59; the interface P7 is used for accessing an LCD touch screen and providing a display interface and a control entrance for the system; the No. 1 pin of the interface P7 is connected with a 12V power supply, the No. 2 pin is grounded, and the No. 3 pin and the No. 4 pin are respectively connected with the No. 6 pin and the No. 7 pin of the U14; the No. 1 pin of the U14 is connected with the No. 43 pin RXD1 of the STM32F103RET6 single chip microcomputer, the No. 2 pin is connected with the No. 44 pin of the STM32F103RET6 single chip microcomputer and one end of a resistor R56, and the other end of the resistor R56 is connected with a 3.3V power supply; pin 3 of U14 is connected with pin 2 of U14; the No. 4 pin of the U14 is connected with the No. 42 pin TXD1 of the STM32F103RET6 singlechip; pin 5 of U14 is grounded; pin 6 of the U14 is connected to one end of a resistor R59 and one end of a resistor R58 respectively, the other end of the resistor R59 is connected with a 3.3V power supply, the other end of the resistor R58 is connected to pin 7 of the U14 and one end of a resistor R57 respectively, and the other end of the resistor R57 is grounded; pin 8 of U14 switches on 3.3V power supply;

the RS485 sensor interface circuit includes: an interface P14, a second MAX3485 chip U13, a resistor R47 and a resistor R50; the interface P14 is used for connecting a PH sensor or a chlorophyll sensor; the No. 1 pin of the interface P14 is connected with a 12V power supply, the No. 2 pin is grounded, and the No. 3 pin and the No. 4 pin are respectively connected with the No. 6 pin and the No. 7 pin of the U13; the No. 1 pin of U13 is connected with No. 30 pin RXD3 of STM32F103RET6 singlechip, the No. 2 pin is connected with No. 21 pin EN485 of STM32F103RET6 singlechip and one end of resistor R47, and the other end of resistor R47 is connected with a 3.3V power supply; pin 3 of U13 is connected with pin 2 of U13; the No. 4 pin of the U13 is connected with the No. 29 pin TXD3 of the STM32F103RET6 singlechip; pin 5 of U13 is grounded; a resistor R50 is connected in parallel between the No. 6 pin and the No. 7 pin of the U13; pin 8 of U13 turns on the 3.3V power supply.

The utility model provides a beneficial effect that technical scheme brought is: the utility model discloses a little algae high-efficient, closed loop, intelligent expand system of cultivateing, the time information that provides according to real-time clock calculates little algae's cultivation cycle, carries out the regulation and control that corresponds to little algae environment according to configuration information and real-time sensing data, and then accomplishes a closed loop, intelligent control. The method realizes the efficient, closed-loop and intelligent propagation of single and pure microalgae, and improves the efficiency and quality of microalgae culture.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a circuit connection diagram of an efficient, closed-loop, intelligent augmented culture system for microalgae according to an embodiment of the present invention;

fig. 2 is a circuit diagram of a main control circuit in an embodiment of the present invention;

fig. 3 is a circuit diagram of a clock circuit according to an embodiment of the present invention;

fig. 4a to 4c are circuit diagrams of the power supply circuit in the embodiment of the present invention;

fig. 5 is a circuit diagram of a memory circuit according to an embodiment of the present invention;

fig. 6 is a circuit diagram of an interface circuit of a wireless module according to an embodiment of the present invention;

FIG. 7 is a circuit diagram of an alarm circuit in an embodiment of the present invention;

fig. 8 is a circuit diagram of a digital sensor interface circuit in an embodiment of the invention;

fig. 9a is a circuit diagram of an RS485 sensor interface circuit according to an embodiment of the present invention;

fig. 9b is a circuit diagram of an RS485LCD touch screen interface circuit in an embodiment of the present invention;

fig. 10 is a circuit diagram of a PWM dimming circuit according to an embodiment of the present invention;

fig. 11 is a circuit diagram of an LED strip interface circuit in an embodiment of the present invention;

fig. 12 is a circuit diagram of a relay control circuit in an embodiment of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the utility model provides a high-efficiency, closed-loop and intelligent expanding culture system for microalgae;

referring to fig. 1, fig. 1 is a circuit connection diagram of an efficient, closed-loop, intelligent propagation system for microalgae according to an embodiment of the present invention;

the high-efficiency, closed-loop and intelligent culture expanding system for microalgae comprises: the microalgae culture expanding device comprises a microalgae culture expanding container, a control circuit, a sensor assembly, an LCD touch screen, an LED lamp strip, a heating rod and an air pump;

the sensor assembly, the LCD touch screen, the LED lamp strip, the heating rod and the air pump are electrically connected with the control circuit; the sensor assembly includes: a light intensity sensor, a temperature sensor, a PH sensor and a chlorophyll sensor;

the microalgae expanding culture container is made of transparent materials so as to ensure light transmittance; the LED lamp strip is arranged on the periphery outside the microalgae expanding culture container and is used for providing illumination for the microalgae; the heating rod is arranged in the microalgae expanding culture container and is used for providing proper temperature for the microalgae in the microalgae expanding culture container; the air outlet end of the air pump is connected with the nano aeration pipe, and the nano aeration pipe is arranged at the bottom in the microalgae propagation container and is used for supplying air to the microalgae in the microalgae propagation container and promoting the water circulation in the microalgae propagation container; the illuminance sensor is arranged between the microalgae expanding culture container and the LED lamp strip and is used for monitoring the ambient illuminance parameter inside the microalgae expanding culture container; the temperature sensor is arranged in the microalgae expanding culture container and is used for monitoring the temperature parameter of the microalgae solution in the microalgae expanding culture container; the pH sensor is arranged in the microalgae propagation container and is used for monitoring the pH value parameter of the microalgae solution in the microalgae propagation container; the chlorophyll sensor is arranged in the microalgae propagation container and is used for monitoring the concentration value of microalgae in a microalgae solution in the microalgae propagation container; the LCD touch screen is arranged on the outer surface of the microalgae propagation container and is used for providing data display, a system state interface and an operation and control inlet for a user.

The control circuit includes: the intelligent monitoring system comprises a main control circuit, a power supply circuit, a clock circuit, a storage circuit, an alarm circuit, a digital sensor interface circuit, a 485 communication interface circuit, a wireless module interface circuit, a PWM dimming circuit and a relay control circuit;

the power supply circuit is used for providing power supply for other circuits of the system; the clock circuit, the storage circuit, the alarm circuit, the digital sensor interface circuit, the 485 communication interface circuit, the wireless module interface circuit, the PWM dimming circuit and the relay control circuit are electrically connected with the master control circuit;

the illuminance sensor and the temperature sensor are both electrically connected with the digital sensor interface circuit; the LED lamp strip is electrically connected with the PWM dimming circuit; the heating rod and the air pump are both electrically connected with the relay control circuit; the PH sensor, the chlorophyll sensor and the LCD touch screen are electrically connected with the 485 communication interface circuit.

Referring to fig. 2, fig. 2 is a circuit diagram of a main control circuit according to an embodiment of the present invention; and a main control chip U1 of the main control circuit adopts an STM32F103RET6 singlechip.

Referring to fig. 3, fig. 3 is a circuit diagram of a clock circuit according to an embodiment of the present invention; the clock circuit provides a high-precision standard real-time clock for the system, and the standard real-time clock is built in the clock circuit; the clock chip U5 adopts a DS1302 chip;

the clock circuit further includes: the resistor R301, the resistor R302, the resistor R303, the resistor R304, the capacitor C30, the capacitor C31 and the crystal oscillator Y3;

the No. 1 pin of the DS1302 chip is connected with a 3.3V power supply, the No. 2 pin is connected with a capacitor C30 in series and then grounded, the No. 3 pin is connected with a capacitor C31 in series and then grounded, and a crystal oscillator Y3 is connected between the No. 2 pin and the No. 3 pin; pin 4 of the DS1302 chip is grounded; the No. 5 pin of the DS1302 chip is connected with one end of the resistor R301, the other end of the resistor R301 is connected with one end of the resistor R302, the other end of the resistor R302 is connected with the No. 7 pin of the DS1302 chip, and a 3.3V power supply is connected between the resistor R301 and the resistor R302; the No. 6 pin of the DS1302 chip is respectively connected to one end of a resistor R303 and a No. 24 pin DS-DQ of an STM32F103RET6 singlechip, and the other end of the resistor R303 is connected to a 3.3V power supply; the No. 5 pin and the No. 7 pin of the STM32F103RET6 singlechip are also connected to the No. 25 pin DS-RST and the No. 23 pin DS-SCLK of the STM32F103RET6 singlechip respectively; and a No. 8 pin of the DS1302 chip is connected with a resistor R304 in series and then is connected to a No. 1 pin BAT of the STM32F103RET6 singlechip.

Please refer to fig. 4a to 4c, which are circuit diagrams of the power supply circuit according to the embodiment of the present invention; the power supply circuit provides voltages required by various power supplies of the system, and comprises: DC12V to DC5V circuit (fig. 4a), DC12V to 4.3V circuit (fig. 4b), 2-way DC5V to 3.3V circuit (fig. 4 c); the chip U7 of the circuit for converting DC12V into DC5V adopts an LM2596S-5.0DCDC chip; the chip U2 of the circuit converting DC12V into 4.3V adopts an LM2596S-ADJ DCDC chip, and the chip U6 and the chip U9 of the circuit converting DC5V into 3.3V both adopt AMS1117-3.3LDO chips.

Referring to fig. 5, fig. 5 is a circuit diagram of a memory circuit according to an embodiment of the present invention; the storage circuit uses an EEPROM memory, and the chip U11 of the storage circuit adopts an AT24C64 chip; the storage circuit stores various configuration information for the system, and ensures that the system can recover the working state before power failure after being electrified again when the system is abnormally powered off.

Referring to fig. 6, fig. 6 is a circuit diagram of an interface circuit of a wireless module according to an embodiment of the present invention; the wireless module interface circuit comprises an interface P6, wherein the P6 is accessed to a GPRS module and can be remotely controlled by a mobile phone; wherein, P6's a pin connects 4.3V power, and No. 2 pin connects No. 14 pin of STM32F103RET6 singlechip, and No. 3 pin connects No. 15 pin of STM32F103RET6 singlechip, and No. 4 pin connects No. 16 pin of STM32F103RET6 singlechip, and No. 5 pin connects No. 17 pin of STM32F103RET6 singlechip, and No. 6 pin ground connection.

Referring to fig. 7, fig. 7 is a circuit diagram of an alarm circuit according to an embodiment of the present invention, in which the resistances of R17 and R18 are 1K and 10K, respectively; the alarm circuit provides sound alarm signals for the system and comprises a piezoelectric type active buzzer U4, wherein the U4 is driven by an NPN triode Q2; when the environmental parameters in the system are abnormal or the equipment is abnormal (the equipment is judged to be abnormal when the environmental parameters are not in the preset range), an acoustic alarm signal is provided for the system.

Referring to fig. 8, fig. 8 is a circuit diagram of an interface circuit of a digital sensor according to an embodiment of the present invention, wherein the resistances of R54, R55, R15, and R16 are all 10K, C29 is 104, and C10 is 0.1 uF; the digital sensor interface circuit, comprising: one IIC interface P3 is connected to the illuminance sensor; one single bus interface J2 is connected to a temperature sensor; the system comprises a light intensity sensor, a temperature sensor, a light intensity sensor and a temperature sensor, wherein the light intensity sensor is BH1750FVI and provides an environment light intensity parameter for the system, and the temperature sensor is DS18B20 and provides an environment temperature parameter for the system; the pin No. 1 of the interface P3 is grounded after being connected with a capacitor C29 in series, a resistor R54 and a resistor R55 are connected between the pin No. 2 and the pin No. 3 in series, a 3.3V power supply is connected between the resistor R54 and the resistor R55, and the pin No. 4 is grounded; the No. 1 pin of the interface P3 is also connected with a 3.3V power supply, and the No. 2 pin and the No. 3 pin are also respectively connected with the No. 34 pin and the No. 35 pin of the STM32F103RET6 single chip microcomputer; pin 1 of interface J2 is grounded, pin 2 is connected to the one end of resistance R15 and resistance R16 respectively, and the other end of resistance R16 switches on the 3.3V power, and the other end of resistance R15 is connected to pin 3 of interface J2, the one end and the 5V power of electric capacity C10 respectively, and the other end of electric capacity C10 is grounded.

The 485 communication interface circuit comprises two external 485 interface circuits, namely an RS485 sensor interface circuit (shown in figure 9a) and an RS485LCD touch screen interface circuit (shown in figure 9b), and the master control chip is an MAX3485 chip; wherein the resistance values of R47, R56, R57 and R59 are all 1K, and the resistance values of R58 and R50 are all 120K;

wherein, RS485LCD touch-sensitive screen interface circuit includes: the chip comprises an interface P7, a first MAX3485 chip U14, a resistor R56, a resistor R57, a resistor R58 and a resistor R59; the interface P7 is used for accessing an LCD touch screen and providing a display interface and a control entrance for the system; the No. 1 pin of the interface P7 is connected with a 12V power supply, the No. 2 pin is grounded, and the No. 3 pin and the No. 4 pin are respectively connected with the No. 6 pin and the No. 7 pin of the U14; the No. 1 pin of the U14 is connected with the No. 43 pin RXD1 of the STM32F103RET6 single chip microcomputer, the No. 2 pin is connected with the No. 44 pin of the STM32F103RET6 single chip microcomputer and one end of a resistor R56, and the other end of the resistor R56 is connected with a 3.3V power supply; pin 3 of U14 is connected with pin 2 of U14; the No. 4 pin of the U14 is connected with the No. 42 pin TXD1 of the STM32F103RET6 singlechip; pin 5 of U14 is grounded; pin 6 of the U14 is connected to one end of a resistor R59 and one end of a resistor R58 respectively, the other end of the resistor R59 is connected with a 3.3V power supply, the other end of the resistor R58 is connected to pin 7 of the U14 and one end of a resistor R57 respectively, and the other end of the resistor R57 is grounded; pin 8 of U14 switches on 3.3V power supply;

the RS485 sensor interface circuit includes: an interface P14, a second MAX3485 chip U13, a resistor R47 and a resistor R50; the interface P14 is used for being connected with sensors of 485 interfaces such as PH and chlorophyll to provide environmental parameters such as PH and chlorophyll for the system; the No. 1 pin of the interface P14 is connected with a 12V power supply, the No. 2 pin is grounded, and the No. 3 pin and the No. 4 pin are respectively connected with the No. 6 pin and the No. 7 pin of the U13; the No. 1 pin of U13 is connected with No. 30 pin RXD3 of STM32F103RET6 singlechip, the No. 2 pin is connected with No. 21 pin EN485 of STM32F103RET6 singlechip and one end of resistor R47, and the other end of resistor R47 is connected with a 3.3V power supply; pin 3 of U13 is connected with pin 2 of U13; the No. 4 pin of the U13 is connected with the No. 29 pin TXD3 of the STM32F103RET6 singlechip; pin 5 of U13 is grounded; a resistor R50 is connected in parallel between the No. 6 pin and the No. 7 pin of the U13; pin 8 of U13 turns on the 3.3V power supply.

Referring to fig. 10, fig. 10 is a circuit diagram of a PWM dimming circuit according to an embodiment of the present invention, wherein C2 is 104, C5 is 470uF/35v, R11, R12, and R10 are all 49.9K, R9 is 47K, Q1 and Q6 are both 2SK2986, and F6 is FUSE 1812/1.25A; the PWM dimming circuit provides a high-power PWM signal interface and comprises an MOS tube driving chip U3, a first MOS field-effect tube Q1, a second MOS field-effect tube Q6, a resistor R9, a resistor R10, a diode D2, a diode D3 and a fuse F6; u3 adopts TC4427 chip, Q1 and Q6 both adopt DTK 0403; pin 2 of the TC4427 is respectively connected to pin BUFF No. 40 of the STM32F103RET6 singlechip and one end of a resistor R12, pin 4 is respectively connected to pin 41 of the STM32F103RET6 singlechip, LED _ PWM, and one end of a resistor R11, and the other end of the resistor R11 is connected to the other end of the resistor R12 and pin 3 of U3; pin 7 of U3 is electrically connected to the alarm circuit; pin No. 5 of U3 is connected to one end of resistor R9, the other end of resistor R9 is connected to one end of resistor R10, the G pole of Q1 and the G pole of Q6 respectively, the other end of resistor R10 is connected to the S pole of Q1, the S pole of Q6 and the anode of diode D3 respectively, the D pole of Q1 is connected to the anode of diode D2, the D pole of Q6 and the cathode of diode D3 respectively, the cathode of diode D2 is connected to the anode LEDOUT + of LED lamp strip interface circuit behind the series resistance wire F6, and the cathode of diode D3 is also connected to the cathode LEDOUT + of LED lamp strip interface circuit.

Referring to fig. 11, fig. 11 is a circuit diagram of an LED lamp strip interface circuit in an embodiment of the present invention, where F1-F5 are all WH 16-900; the LED lamp area interface circuit of PWM dimmer circuit poststage divides into five ways, and each is shunted and all contains the fuse, possesses the one-way protect function.

Referring to fig. 12, fig. 12 is a circuit diagram of a relay control circuit according to an embodiment of the present invention; the relay control circuit comprises three groups of optical coupling isolation relay circuits: the optical coupling module U8, the optical coupling module U10 and the optical coupling module U12;

the main control circuit is electrically connected with the input ends of U8, U10 and U12 through a pin No. 8, a pin No. 9 and a pin No. 10 of an STM32F103RET6 singlechip respectively so as to output signals to the optical coupling modules U8, U10 and U12; the output ends of U8, U10 and U12 drive a relay KR1, a relay KR2 and a relay KR3 through a triode Q3, a triode Q4 and a triode Q5 respectively, so that the function of controlling strong electric equipment by weak current is realized;

u8, U10 and U12 all adopt PC817 optical coupling modules; q3, Q4 and Q5 all adopt S8050NPN triodes;

the output ends of the relay KR1, the relay KR2 and the relay KR3 are respectively connected with a light emitting diode LED-1, a light emitting diode LED-2 and a light emitting diode LED-3 for indicating the working state of the AC220V output by three-way control; the output end of the relay KR1 is connected to the light emitting diode LED-1 through a rectifier diode D8 and a current limiting resistor R30; the output end of the relay KR2 is connected to the light emitting diode LED-2 through a rectifier diode D10 and a current limiting resistor R40; the output terminal of the relay KR3 is connected to the light emitting diode LED-3 through a rectifier diode D13 and a current limiting resistor R46.

The use principle of the high-efficiency closed-loop intelligent propagation system for microalgae is as follows:

the main control circuit monitors environmental parameter data in real time, the environmental parameter data comprises sensor signals such as temperature parameters, environmental illuminance parameters, PH value parameters and microalgae concentration values, the monitored environmental parameter data are transmitted to the LCD touch screen to be displayed, a user can set interval values of intelligent control and timing control of illuminance, temperature and PH value on the LCD touch screen, corresponding control devices such as an LED lamp belt, a heating rod and an air pump can be started and closed manually, the LCD touch screen returns received configuration information and control instructions to the main control circuit and stores the configuration information and the control instructions, and the main control circuit can intelligently judge and control the startup and shutdown states of the control devices such as the LED lamp belt, the heating rod and the air pump according to the information of the sensors and the time information provided by the clock circuit.

The expanding culture device has a one-key expanding culture function (a touch button is arranged on an LCD touch screen), after a user clicks the one-key expanding culture button on the LCD touch screen, a main control circuit can record the current time as the starting time, the culture period of microalgae is calculated according to the time information provided by a real-time clock, and the microalgae environment is correspondingly regulated and controlled according to preset configuration information (including a preset illuminance interval, a preset temperature interval and a preset PH value interval) and real-time sensing data sent by each sensor, so that the intelligent control is completed:

when the main control circuit monitors that the ambient illuminance deviates from an illuminance interval required by the current growth cycle, a control instruction is sent out, and the brightness output by the LED lamp band is adjusted until the ambient illuminance is within the illuminance interval;

when the main control circuit monitors that the ambient temperature deviates from the temperature interval required by the current growth cycle, a control instruction is sent out to control whether the heating device heats or not;

when the main control circuit monitors that the current environment PH value deviates from the PH value interval required by the current growth cycle, a control instruction is sent out to control whether the air pump supplies air or not;

when the main control circuit monitors that the chlorophyll sensing index reaches the culture expanding index, a prompt is sent out to finish the whole algae culture process;

when the environmental parameter is abnormal or the control is abnormal, the system can send an alarm and operate the system according to a specific parameter (preset) so as to ensure the safety of the algae.

The utility model has the advantages that: the utility model discloses a device is banked up with earth to high-efficient, closed loop, intelligent expanding of little algae, the time information that provides according to real-time clock calculates little algae's cultivation cycle, carries out the regulation and control that corresponds to little algae environment according to configuration information and real-time sensing data, and then accomplishes a closed loop, intelligent control. The method realizes the efficient, closed-loop and intelligent propagation of single and pure microalgae, and improves the efficiency and quality of microalgae culture.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (8)

1. An efficient, closed-loop and intelligent expanding culture system for microalgae is characterized in that: the method comprises the following steps: the microalgae culture expanding device comprises a microalgae culture expanding container, a control circuit, a sensor assembly, an LCD touch screen, an LED lamp strip, a heating rod and an air pump;

the sensor assembly, the LCD touch screen, the LED lamp strip, the heating rod and the air pump are electrically connected with the control circuit;

the control circuit includes: the intelligent monitoring system comprises a main control circuit, a power supply circuit, a clock circuit, a storage circuit, an alarm circuit, a digital sensor interface circuit, a 485 communication interface circuit, a wireless module interface circuit, a PWM dimming circuit and a relay control circuit;

the power supply circuit is used for providing power supply for other circuits of the system; the clock circuit, the storage circuit, the alarm circuit, the digital sensor interface circuit, the 485 communication interface circuit, the wireless module interface circuit, the PWM dimming circuit and the relay control circuit are electrically connected with the master control circuit;

the LED lamp strip is arranged on the periphery outside the microalgae expanding culture container; the heating rod is arranged in the microalgae expanding culture container; the air outlet end of the air pump is connected with the nano aeration pipe, and the nano aeration pipe is arranged at the bottom in the microalgae propagation container; the LCD touch screen is arranged on the outer surface of the microalgae expanding culture container;

the sensor assembly includes: a light intensity sensor, a temperature sensor, a PH sensor and a chlorophyll sensor; the illuminance sensor is arranged between the microalgae expanding culture container and the LED lamp strip; the temperature sensor, the PH sensor and the chlorophyll sensor are all arranged inside the microalgae propagation container;

the illuminance sensor and the temperature sensor are both electrically connected with the digital sensor interface circuit; the LED lamp strip is electrically connected with the PWM dimming circuit; the heating rod and the air pump are both electrically connected with the relay control circuit; the PH sensor, the chlorophyll sensor and the LCD touch screen are electrically connected with the 485 communication interface circuit.

2. The system of claim 1, wherein the system comprises: and a main control chip U1 of the main control circuit adopts an STM32F103RET6 singlechip.

3. The system of claim 2, wherein the system comprises: the clock chip U5 adopts a DS1302 chip; the clock circuit further includes: the resistor R301, the resistor R302, the resistor R303, the resistor R304, the capacitor C30, the capacitor C31 and the crystal oscillator Y3;

the No. 1 pin of the DS1302 chip is connected with a 3.3V power supply, the No. 2 pin is connected with a capacitor C30 in series and then grounded, the No. 3 pin is connected with a capacitor C31 in series and then grounded, and a crystal oscillator Y3 is connected between the No. 2 pin and the No. 3 pin; pin 4 of the DS1302 chip is grounded; the No. 5 pin of the DS1302 chip is connected with one end of the resistor R301, the other end of the resistor R301 is connected with one end of the resistor R302, the other end of the resistor R302 is connected with the No. 7 pin of the DS1302 chip, and a 3.3V power supply is connected between the resistor R301 and the resistor R302; the No. 6 pin of the DS1302 chip is respectively connected to one end of a resistor R303 and a No. 24 pin DS-DQ of an STM32F103RET6 singlechip, and the other end of the resistor R303 is connected to a 3.3V power supply; the No. 5 pin and the No. 7 pin of the STM32F103RET6 singlechip are also connected to the No. 25 pin DS-RST and the No. 23 pin DS-SCLK of the STM32F103RET6 singlechip respectively; and a No. 8 pin of the DS1302 chip is connected with a resistor R304 in series and then is connected to a No. 1 pin BAT of the STM32F103RET6 singlechip.

4. The system of claim 1, wherein the system comprises: the power supply circuit includes: a DC 12V-to-DC 5V circuit, a DC 12V-to-4.3V circuit, and a 2-way DC 5V-to-3.3V circuit; the chip U7 of the circuit for converting DC12V into DC5V adopts an LM2596S-5.0DCDC chip; the chip U2 of the circuit from DC12V to 4.3V adopts an LM2596S-ADJ DCDC chip, and the chip U6 and the chip U9 of the circuit from 2-path DC5V to 3.3V both adopt AMS1117-3.3LDO chips; the storage circuit uses an EEPROM memory, and the chip U11 of the storage circuit adopts an AT24C64 chip.

5. The system of claim 2, wherein the system comprises: the wireless module interface circuit comprises an interface P6, wherein the P6 is accessed to a GPRS module and can be remotely controlled by a mobile phone; the first pin of the P6 is connected with a 4.3V power supply, the second pin is connected with the 14 pin of the STM32F103RET6 singlechip, the 3 pin is connected with the 15 pin of the STM32F103RET6 singlechip, the 4 pin is connected with the 16 pin of the STM32F103RET6 singlechip, the 5 pin is connected with the 17 pin of the STM32F103RET6 singlechip, and the 6 pin is grounded;

the alarm circuit comprises a piezoelectric type active buzzer U4, and a U4 is driven by an NPN triode Q2.

6. The system of claim 2, wherein the system comprises: the PWM dimming circuit includes: the MOS tube driving circuit comprises a MOS tube driving chip U3, a first MOS field effect tube Q1, a second MOS field effect tube Q6, a resistor R9, a resistor R10, a diode D2, a diode D3 and a fuse F6; u3 adopts TC4427 chip, Q1 and Q6 both adopt DTK 0403; pin 2 of the TC4427 is respectively connected to pin BUFF No. 40 of the STM32F103RET6 singlechip and one end of a resistor R12, pin 4 is respectively connected to pin 41 of the STM32F103RET6 singlechip, LED _ PWM, and one end of a resistor R11, and the other end of the resistor R11 is connected to the other end of the resistor R12 and pin 3 of U3; pin 7 of U3 is electrically connected to the alarm circuit; a pin No. 5 of the U3 is connected to one end of a resistor R9, the other end of the resistor R9 is connected to one end of a resistor R10, the G pole of Q1 and the G pole of Q6 respectively, the other end of the resistor R10 is connected to the S pole of Q1, the S pole of Q6 and the anode of a diode D3 respectively, the D pole of Q1 is connected to the anode of a diode D2, the D pole of Q6 and the cathode of a diode D3 respectively, the cathode of the diode D2 is connected with a resistance wire F6 in series and then is connected with the anode LEDOUT + of the LED light strip interface circuit, and the cathode of the diode D3 is also connected with the cathode LEUT DO-;

the LED lamp strip interface circuit at the rear stage of the PWM dimming circuit is divided into five paths, each branch circuit contains a fuse, and the LED lamp strip interface circuit has a one-path protection function;

the relay control circuit comprises three groups of optical coupling isolation relay circuits: the optical coupling module U8, the optical coupling module U10 and the optical coupling module U12;

the main control circuit is electrically connected with the input ends of U8, U10 and U12 through a pin No. 8, a pin No. 9 and a pin No. 10 of an STM32F103RET6 singlechip respectively so as to output signals to the optical coupling modules U8, U10 and U12; the output ends of U8, U10 and U12 drive a relay KR1, a relay KR2 and a relay KR3 through a triode Q3, a triode Q4 and a triode Q5 respectively, so that the function of controlling strong electric equipment by weak current is realized;

u8, U10 and U12 all adopt PC817 optical coupling modules; q3, Q4 and Q5 all adopt S8050NPN triodes;

the output ends of the relay KR1, the relay KR2 and the relay KR3 are respectively connected with a light emitting diode LED-1, a light emitting diode LED-2 and a light emitting diode LED-3 for indicating the working state of the AC220V output by three-way control; the output end of the relay KR1 is connected to the light emitting diode LED-1 through a rectifier diode D8 and a current limiting resistor R30; the output end of the relay KR2 is connected to the light emitting diode LED-2 through a rectifier diode D10 and a current limiting resistor R40; the output terminal of the relay KR3 is connected to the light emitting diode LED-3 through a rectifier diode D13 and a current limiting resistor R46.

7. The system of claim 2, wherein the system comprises: the digital sensor interface circuit includes: one IIC interface P3 is connected to the illuminance sensor; one single bus interface J2 is connected to a temperature sensor; the system comprises a light intensity sensor, a temperature sensor, a light intensity sensor and a temperature sensor, wherein the light intensity sensor is BH1750FVI and provides an environment light intensity parameter for the system, and the temperature sensor is DS18B20 and provides an environment temperature parameter for the system; the pin No. 1 of the interface P3 is grounded after being connected with a capacitor C29 in series, a resistor R54 and a resistor R55 are connected between the pin No. 2 and the pin No. 3 in series, a 3.3V power supply is connected between the resistor R54 and the resistor R55, and the pin No. 4 is grounded; the No. 1 pin of the interface P3 is also connected with a 3.3V power supply, and the No. 2 pin and the No. 3 pin are also respectively connected with the No. 34 pin and the No. 35 pin of the STM32F103RET6 single chip microcomputer; pin 1 of interface J2 is grounded, pin 2 is connected to the one end of resistance R15 and resistance R16 respectively, and the other end of resistance R16 switches on the 3.3V power, and the other end of resistance R15 is connected to pin 3 of interface J2, the one end and the 5V power of electric capacity C10 respectively, and the other end of electric capacity C10 is grounded.

8. The system of claim 2, wherein the system comprises: the 485 communication interface circuit comprises two external 485 interface circuits, namely an RS485 sensor interface circuit and an RS485LCD touch screen interface circuit, and a master control chip is an MAX3485 chip;

wherein, RS485LCD touch-sensitive screen interface circuit includes: the chip comprises an interface P7, a first MAX3485 chip U14, a resistor R56, a resistor R57, a resistor R58 and a resistor R59; the interface P7 is used for accessing an LCD touch screen and providing a display interface and a control entrance for the system; the No. 1 pin of the interface P7 is connected with a 12V power supply, the No. 2 pin is grounded, and the No. 3 pin and the No. 4 pin are respectively connected with the No. 6 pin and the No. 7 pin of the U14; the No. 1 pin of the U14 is connected with the No. 43 pin RXD1 of the STM32F103RET6 single chip microcomputer, the No. 2 pin is connected with the No. 44 pin of the STM32F103RET6 single chip microcomputer and one end of a resistor R56, and the other end of the resistor R56 is connected with a 3.3V power supply; pin 3 of U14 is connected with pin 2 of U14; the No. 4 pin of the U14 is connected with the No. 42 pin TXD1 of the STM32F103RET6 singlechip; pin 5 of U14 is grounded; pin 6 of the U14 is connected to one end of a resistor R59 and one end of a resistor R58 respectively, the other end of the resistor R59 is connected with a 3.3V power supply, the other end of the resistor R58 is connected to pin 7 of the U14 and one end of a resistor R57 respectively, and the other end of the resistor R57 is grounded; pin 8 of U14 switches on 3.3V power supply;

the RS485 sensor interface circuit includes: an interface P14, a second MAX3485 chip U13, a resistor R47 and a resistor R50; the interface P14 is used for connecting a PH sensor or a chlorophyll sensor; the No. 1 pin of the interface P14 is connected with a 12V power supply, the No. 2 pin is grounded, and the No. 3 pin and the No. 4 pin are respectively connected with the No. 6 pin and the No. 7 pin of the U13; the No. 1 pin of U13 is connected with No. 30 pin RXD3 of STM32F103RET6 singlechip, the No. 2 pin is connected with No. 21 pin EN485 of STM32F103RET6 singlechip and one end of resistor R47, and the other end of resistor R47 is connected with a 3.3V power supply; pin 3 of U13 is connected with pin 2 of U13; the No. 4 pin of the U13 is connected with the No. 29 pin TXD3 of the STM32F103RET6 singlechip; pin 5 of U13 is grounded; a resistor R50 is connected in parallel between the No. 6 pin and the No. 7 pin of the U13; pin 8 of U13 turns on the 3.3V power supply.

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