KR20200047041A - Leaf Vegetables and Mushroom Cultivation System Using Interchange of Oxygen Generated from Leafy Vegetables and Carbon Dioxide from Mushrooms - Google Patents

Abstract

The present invention relates to a system for cultivating leafy vegetables and mushrooms using interchange between oxygen generated from leafy vegetables and carbon dioxide generated from mushrooms, which maximizes the production amount and quality of the leafy vegetables and the mushrooms. According to the present invention, the system comprises: a housing (100) divided into a mushroom cultivation compartment (110), a leafy vegetable cultivation compartment (120), an air conditioning area (130), a management area (140), and a harvesting area by a plurality of sidewalls (101); a light emitting apparatus (300) emitting light to the mushroom and leafy vegetable cultivation compartments (110, 120); a mushroom cultivation shelf (400) stacked in the mushroom cultivation compartment (110) and cultivating the mushrooms thereon; a leafy vegetable cultivation shelf (500) stacked in the leafy vegetable cultivation compartment (120) and cultivating the leafy vegetable thereon; an air conditioning apparatus (600) installed in the air conditioning area (130), storing and transferring carbon dioxide discharged from the mushroom cultivation compartment (110) to the leafy vegetable cultivation compartment (120) or storing and transferring oxygen discharged from the leafy vegetable cultivation compartment (120) to the mushroom cultivation compartment (110), and controlling the carbon dioxide concentration, humidity, and temperature of the mushroom and leafy vegetable cultivation compartments (110, 120); and a control unit controlling the light emitting apparatus (300) and the air conditioning apparatus (600) based on Internet of things (IoT).

Description

Leaf Vegetables and Mushroom Cultivation System Using Interchange of Oxygen Generated from Leafy Vegetables and Carbon Dioxide from Mushrooms}

The present invention relates to a leaf and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms.

In general, the mushroom refers to a large fruiting body formed by the fungus, and the fungus means a fungus that now forms a fungus system, but originally refers to a mushroom, that is, the English Mushroom.

The value of mushrooms as a food product is not evaluated in terms of nutritional value, but that vegetables and fungi contain substances that cannot be obtained from leafy vegetables and animal foods. Edible mushrooms are alkaline foods rich in crude fiber, potassium, phosphoric acid, vitamins B and D, enzymes, in addition to protein and fat. The unique taste and aroma of edible mushrooms is due to the high levels of amino acids, mannitol, and trehalose. The typical types are throat, pine, shiitake, oyster, neungi, sage mushroom, oriole mushroom, cedar mushroom, flavor mushroom, and milk mushroom.

These mushrooms are grown and supplied, Korea and Japan mainly grow shiitake mushrooms, China and Southeast Asia grow mushrooms, and Europe and the United States grow mushrooms (Korean mushrooms) mainly, so It is also called the three major cultivation mushrooms.

In order to cultivate such mushrooms, it is possible to grow high-quality mushrooms by satisfying various growth conditions.However, most of the methods for growing mushrooms in farms depend on plastic greenhouses, so it is impossible to grow mushrooms due to high temperature in summer or Cases in which all of the mushrooms die are continuing, and in winter, growth and harvesting of mushrooms are significantly reduced due to sub-zero temperatures. In addition, it is difficult to control the humidity, and there is a problem in that growth and development are inhibited due to insufficient ventilation and carbon dioxide.

Korean Registered Patent No. 1852987 provided a modular leaf vegetable plant system for cultivation of high value-added mushrooms that can satisfy the growth conditions of mushrooms. More specifically, it collected and collected cultivation environment monitoring information from environmental collection means. Growing environment integration for analyzing cultivation environment monitoring information to provide cultivation environment control information as a cultivation environment providing means, illumination and image control information as a cultivation environment providing means, and collecting cultivation environment control result information from a pear environment providing means Management means; Produces cultivation environment monitoring information using the cultivation environment variable values provided from the cultivation environment providing means, provides it as a growth environment integrated management means, and obtains illumination and image control information from the growth environment integrated management means to perform illumination and image control Environmental collection means for; It acquires the cultivation environment control information from the growth environment integrated management means, operates the thermo-hygrostat, provides the cultivation environment variable value detected by the sensors as the environment collection means, and provides the cultivation environment control result information as the growth environment integrated management water Including the cultivation environment providing means for; The cultivation environment monitoring information is information generated using the cultivation environment variable values collected from sensors configured to be installed in the cultivation facility, and is information indicating the current environment of the surrounding cultivation facility. The cultivation environment control information is control information for operating the thermo-hygrostat to create a suitable environment for mushroom cultivation, and the cultivation environment control result information is a cultivation environment providing means operating the thermo-hygrostat according to the cultivation environment control information. This is the response information, and the illumination and image control information is joined to mushroom cultivation It is information for controlling the lighting device to be in one illuminance or for controlling the camera unit to photograph the cultivation situation of mushrooms, and the growing environment integrated management means includes an environmental information collection unit for collecting cultivation environment monitoring information from the environmental collection means, A cultivation environment data analysis unit for analyzing data for controlling a cultivation environment based on the collected cultivation environment monitoring information, an environment control unit for providing cultivation environment monitoring information, and cultivation environment control information on the web and mobile; The illuminance and image control unit for providing illuminance and image control signals as an environmental collection means with reference to the data analyzed by the cultivation environment data analysis unit, and the cultivation environment providing means with reference to the data analyzed by the cultivation environment data analysis unit To provide cultivation environment control information, and cultivation The cultivation environment control unit for obtaining environmental control result information, the cultivation environment information DB stored including varieties information, growth information, growth environment information, facility operation information, and market information, and cultivation environment control information according to the set schedule. The environmental control schedule setting unit for providing to the cultivation environment control unit and the standard and threshold values of the cultivation environment variables are set and provided as an environmental collection means, and an event signal is generated when the collected cultivation environment variables are outside the set threshold value. , It includes an event management unit for providing the event signal to the environmental control unit.

At this time, the prior art has a problem in that it requires a lot of equipment by installing various air sensors and air conditioners to satisfy the growth conditions of mushrooms.

Korean Registered Patent No.1852987 (2018.04.23)

The present invention has been devised to solve the above-mentioned problems, and the object of the present invention is to reduce the equipment cost while always cultivating leafy vegetables and mushrooms, and oxygen generated from leafy vegetables that can maximize the production and quality of leafy vegetables and mushrooms. And to provide a plant and mushroom cultivation system through the exchange of carbon dioxide generated from mushrooms.

In addition, another object of the present invention is to provide a foliage and mushroom cultivation system that can be integrated management and adjustment of all equipment based on IOT during mushroom cultivation.

The leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention includes mushroom cultivation 110, leaf vegetable cultivation 120, and air conditioning area 130 by a plurality of side walls 101 ), The housing 100 divided into the management area 140 and the harvest area 150; A light irradiation device 300 for irradiating a light source with the mushroom cultivation plant 110 and the leaf vegetable cultivation plant 120; A mushroom cultivation shelf 400 stacked on the mushroom cultivation plant 110 and cultivated mushrooms; A leaf vegetable cultivation shelf 500 stacked on the leaf vegetable cultivation 120 and cultivated leaf vegetables; Installed in the air conditioning area 130, the carbon dioxide discharged from the mushroom growing plant 110 is stored and transferred to the leaf growing plant 120, or the oxygen discharged from the leaf growing plant 120 is stored to store the mushroom growing plant 110. An air conditioner 600 for controlling carbon dioxide concentration, humidity, and temperature of the mushroom cultivation plant 110 and the leaf vegetable cultivation plant 120; And a control unit for controlling the light irradiation device 300 and the air conditioning device 600 based on IOT.

In addition, the air conditioning device 600 is a carbon dioxide sensor 610 for measuring the carbon dioxide concentration of the mushroom cultivation 110, and if the carbon dioxide concentration measured by the carbon dioxide sensor 610 is more than a set value, the mushroom cultivation 110 A carbon dioxide suction tank 620 for inhaling and storing carbon dioxide, and a carbon dioxide pump 630 for transferring the carbon dioxide stored in the carbon dioxide suction tank 620 to the leafy vegetable rearrangement 120, and the carbon dioxide suction tank 620. A carbon dioxide filter 640 installed between the carbon dioxide pumps 630 to filter dust and spores contained in carbon dioxide, an oxygen sensor 650 for measuring the oxygen concentration of the leaf vegetable cultivation 120, and the leaf vegetable cultivation 120 ) If the measured oxygen concentration is greater than or equal to a set value, the oxygen intake tank 660 and the oxygen intake tank 660 that intake and store oxygen in the leafy vegetable incubator 120 are An oxygen pump 670 for transferring the oxygen to the mushroom cultivation plant 110, and an oxygen filter 680 installed between the oxygen intake tank 660 and the oxygen pump 670 to filter moisture contained in oxygen Includes.

In addition, the air conditioning device 600 is filtered by the first return pump 691 and the oxygen filter 680 to inhale the dust and spores filtered by the carbon dioxide filter 640 and deliver them to the mushroom cultivation 110. It includes a second return pump (692) to suck the damp moisture and transfer it to the leaf vegetable growing (120).

In addition, the light irradiation device 300, the LED for generating a light source, the light source wavelength of the LED and a light filter for adjusting and supplying a specific wavelength for the growth and growth of mushrooms and leafy vegetables, and the solar panel 210 It includes a tray for adjusting the azimuth of the.

In addition, the optical filter is operated in either a growth mode in which the light source wavelength of the LED is adjusted to 430 nm, 450 nm, 640 nm or 660 nm, and a growth mode in which the light source wavelength of the LED is applied to 380 nm or 405 nm.

In addition, a moisture absorbing member 710 coupled to the inner surface of the window 102 formed on the side wall 101 constituting the mushroom cultivation 110 of the housing 100 to absorb moisture of the mushroom cultivation 110 and the window (102) The humidity sensor 720 coupled to the inner surface to measure the humidity of the mushroom cultivation plant 110, and when the humidity measured by the humidity sensor 720 is below a predetermined value, the moisture absorbing member 710 is external It further includes a humidity control device 700 including a rotor 730 to rotate the window 102 to be exposed to.

Accordingly, the leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention can reduce the cost of equipment while always cultivating leaf vegetables and mushrooms, and the production and quality of leaf vegetables and mushrooms. It has the advantage of maximizing.

In addition, the leaf vegetable and mushroom cultivation system through the interchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention has the advantage of integrally managing and adjusting all equipment based on IOT when growing leaf vegetables and mushrooms.

1 is a perspective view showing a leaf vegetable and mushroom cultivation system through the interchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention.
Figure 2 is an internal view showing a leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention.
Figure 3 is a plan view showing a plant and mushroom cultivation system through the exchange of carbon dioxide generated from mushrooms and oxygen generated from leaf vegetables according to the present invention.
Figure 4 is a block diagram showing an air conditioning apparatus according to the present invention.
5 is a block diagram showing a photovoltaic device according to the present invention.
Figure 6 is a perspective view showing a humidity control device according to the present invention.
7 is a perspective view showing an example of a moisture absorbing member according to the present invention.
8 is a flow chart showing a control method of the air conditioning apparatus according to the present invention.

Hereinafter, the technical spirit of the present invention will be described in more detail with reference to the accompanying drawings.

The accompanying drawings are only examples shown in order to describe the technical spirit of the present invention in more detail, so the technical spirit of the present invention is not limited to the form of the accompanying drawings.

1 is a perspective view showing a leaf and mushroom cultivation system through the interchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention, and FIG. 2 is carbon dioxide generated from oxygen and mushrooms generated from leaf vegetables according to the present invention Inside view showing the leaf vegetable and mushroom cultivation system through the interchange of, FIG. 3 is a plan view showing the leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from the leaf vegetable and carbon dioxide generated from the mushroom according to the present invention.

1 to 3, the leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention includes a housing 100, a light irradiation device 300, and mushrooms It includes a cultivation shelf 400, a leaf vegetable cultivation shelf 500, an air conditioning device 600 and a control unit.

The housing 100 is a common structure, and is divided into a mushroom cultivation 110, a leaf vegetable cultivation 120, an air conditioning area 130, a management area 140, and a harvesting area 150 by a plurality of side walls 101. do. At this time, mushrooms are cultivated in the mushroom cultivation 110, leaf vegetables are cultivated in the leaf vegetable cultivation 120, air conditioning is performed in the air conditioning area 130, and control is made in the management area 140. In the harvesting region 150, harvesting of the mushrooms and leafy vegetables may be performed.

On the other hand, the mushroom cultivation 110 is formed on the left side of the housing 100, the leaf vegetable cultivation 120 is formed on the right side of the housing 100, the air conditioning area 130, the management area ( 140) and the harvesting area 150 is preferably formed between the mushroom cultivation plant 110 and the leaf vegetable cultivation 120, which is grown in the mushroom cultivation plant 110 and the cultivation of the leaf vegetable cultivation 120. Leafy vegetables can be easily transported to the harvesting area 150, and carbon dioxide mainly generated in the mushroom cultivation 110 and oxygen mainly generated in the leafy cultivation 120 can be easily transferred to and from the air conditioning area 130. Because it can.

The light irradiation device 300 generates a light source and irradiates the mushroom cultivation 110 and the leaf vegetable cultivation 120. At this time, the light irradiation device 300 may generate a light source by the power generated by the photovoltaic device 200 installed on the ceiling of the housing 100.

The mushroom cultivation shelf 400 is stacked on the mushroom cultivation plant 110 and cultivation of mushrooms is made.

The leaf vegetable cultivation shelf 500 is stacked on the leaf vegetable cultivation 120 and cultivation of leaf vegetables is performed. At this time, leafy vegetables may be composed of cabbage, lettuce, and spinach.

The air conditioning device 600 is installed in the air conditioning area 130 and stores carbon dioxide discharged from the mushroom cultivation 110 to transfer to the leaf cultivation 120 or to store oxygen discharged from the leaf cultivation 120. To the mushroom cultivation plant 110, and controls the carbon dioxide concentration, humidity, and temperature of the mushroom cultivation plant 110 and the leaf vegetable cultivation plant 120. In more detail, carbon dioxide is mainly generated as the mushrooms are grown in the mushroom cultivation 110, and oxygen is mainly generated as the leafy vegetables are cultivated in the leafy vegetable cultivation 120, and is generated in the mushroom cultivation 110. The carbon dioxide to be exchanged with the oxygen generated in the leaf vegetable cultivation 120 to maximize the efficiency of mushroom and leaf vegetable cultivation.

The control unit controls the light irradiation device 300 and the air conditioning device 600 based on IOT.

Accordingly, the leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention can reduce the cost of equipment while always cultivating leaf vegetables and mushrooms, and the production and quality of leaf vegetables and mushrooms. It has the advantage of maximizing.

In addition, the leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms according to the present invention has the advantage of integrally managing and adjusting all equipment based on IOT when growing mushrooms.

4 is a block diagram showing an air conditioning system according to the present invention.

As shown in Figure 4, the air conditioning device 600 is a carbon dioxide sensor 610, carbon dioxide suction tank 620, carbon dioxide pump 630, carbon dioxide filter 640, oxygen sensor 650, oxygen suction tank ( 660), an oxygen pump 670, an oxygen filter 680, a first return pump 691, and a second return pump 692.

The carbon dioxide sensor 610 is installed on the mushroom cultivation 110 to measure the carbon dioxide concentration of the mushroom cultivation 110.

The carbon dioxide suction tank 620 is a tank with a built-in compressor, installed in the air conditioning area 130, and the mushroom re-cultivation if the carbon dioxide concentration measured by the carbon dioxide sensor 610 is greater than or equal to a set value by the control of the control unit ( Inhale and store 110) carbon dioxide.

The carbon dioxide pump 630 is installed in the air conditioning area 130 and transmits the carbon dioxide stored in the carbon dioxide suction tank 620 to the leaf vegetable redistribution 120.

The carbon dioxide filter 640 is installed between the carbon dioxide suction tank 620 and the carbon dioxide pump 630 to filter dust and spores contained in carbon dioxide. At this time, the carbon dioxide filter 640 is configured in a multi-stage type to replace the filter having a low degree of contamination.

The oxygen sensor 650 is installed on the leaf vegetable cultivation 120 to measure the oxygen concentration of the leaf vegetable cultivation (120).

The oxygen intake tank 660 is installed in the air conditioning area 130, and if the oxygen concentration measured by the leaf vegetable recultivation 120 under the control of the control unit is greater than or equal to a set value, intakes oxygen from the leaf vegetable recultivation 120. To save.

The oxygen pump 670 delivers oxygen stored in the oxygen intake tank 660 to the mushroom cultivation 110.

The oxygen filter 680 is installed between the oxygen intake tank 660 and the oxygen pump 670 to filter moisture contained in oxygen. At this time, the oxygen filter 680 is configured in a multi-stage type, it is possible to replace the low-contamination filter.

The first return pump 691 sucks the dust and spores filtered by the carbon dioxide filter 640 and delivers them to the mushroom cultivator 110.

The second return pump 692 inhales the filtered moisture from the oxygen filter 680 and delivers it to the leafy vegetable cultivation 120.

Meanwhile, the light irradiation device 300 includes an LED (not shown in the drawing), an optical filter (not shown), and a tray (not shown).

The LED is a light-emitting diode, and generates a light source using electric energy transmitted from the photovoltaic device 200.

The optical filter supplies the LED by adjusting the wavelength of the light source to a specific wavelength for growth and growth of mushrooms and leafy vegetables. In this case, the optical filter may be operated in any one of a growth mode in which the light source wavelength of the LED is adjusted to 430 nm, 450 nm, 640 nm or 660 nm, and a growth mode in which the light source wavelength of the LED is applied to 380 nm or 405 nm. . More specifically, it is preferable to operate in the growth mode from the beginning of the cultivation of the mushroom and leafy vegetables to the middle of cultivation, and the growth mode from the middle of cultivation to the end of cultivation of the mushrooms and leafy vegetables.

The tray adjusts the azimuth angle of the solar panel 210 according to the solar altitude.

Accordingly, the leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from the leaf vegetable and carbon dioxide generated from the mushroom can maximize the growth and growth of the mushroom and leaf vegetable by using the light irradiation device 300.

5 is a block diagram showing a photovoltaic device according to the present invention.

As illustrated in FIG. 5, the photovoltaic device 200 includes a photovoltaic panel 210, an MPPT converter 220, a DC bus 230, and a DC / AC inverter 240.

The solar panel 210 generates electrical energy by sunlight.

The MPPT converter 220 is a Maximum Power Point Tracking converter, and serves to maximize the efficiency of the DC / AC inverter 240 by boosting the voltage of electric energy transmitted from the solar panel 210 at a maximum power point. do.

The DC bus 230 serves to rectify by temporarily maintaining the DC voltage while temporarily storing the electric energy transferred from the MPPT converter 220.

The DC / AC inverter 240 converts power transmitted from the DC bus 230 into an AC voltage.

Accordingly, the photovoltaic device 200 may maximize power generation efficiency by using the MPPT converter 220.

6 is a perspective view showing a humidity control device according to the present invention, Figure 7 is a perspective view showing an example of a moisture absorbing member according to the present invention.

6, the leaf vegetable and mushroom cultivation system through the exchange of oxygen generated in the leaf vegetable and carbon dioxide generated in the mushroom may further include a humidity control device 700.

The humidity control device 700 is coupled to the inner surface of the window 102 formed on the side wall 101 constituting the mushroom cultivation 110 of the housing 100, a moisture absorbing member for absorbing the moisture of the mushroom cultivation 110 ( 710), a humidity sensor 720 coupled to the inner surface of the window 102 to measure the humidity of the mushroom cultivation 110, and the humidity absorbing member if the humidity of the humidity sensor 720 is lower than a predetermined value ( 710) includes a rotor 730 that rotates the window 102 so that it is exposed to the outside. At this time, only the drive shaft of the rotor 730 is shown in FIG. 5.

In more detail, the humidity control device 700 is the moisture absorbing member 710 absorbs the humidity of the mushroom cultivation 110, and the humidity measured by the humidity sensor 720 is less than a predetermined value, the By operating the rotor 730, the moisture absorbing member 710 is exposed to the outside to dry the moisture in the moisture absorbing member 710.

In addition, when the humidity measured by the humidity sensor 720 is higher than a preset value, the rotor 730 is operated to move the moisture absorbing member 710 to the mushroom cultivation 110, Let the mushroom cultivation 110 absorb moisture.

As illustrated in FIG. 7, the moisture absorbing member 710 may be formed in a semi-cylindrical shape in order to absorb surrounding moisture as much as possible.

At this time, the humidity control device 700 may be installed in the window 102 of the side wall 101 forming the leaf vegetable cultivation 120 of the housing 100.

Meanwhile, a phase change material for thermal insulation may be embedded between the inner surface and the outer surface of the side wall 101.

8 is a flow chart showing a control method of an air conditioning apparatus according to the present invention.

The control method of the air conditioning apparatus according to the present invention will be described with reference to FIG. 8.

In the first step (S10), the carbon dioxide sensor 610 measures the carbon dioxide concentration of the mushroom cultivation 110.

In the second step (S20), it is read whether the concentration of carbon dioxide measured by the carbon dioxide sensor 610 is greater than or equal to a set value under the control of the control unit.

In the third step (S30), if the carbon dioxide concentration is greater than or equal to a set value, the mushroom cultivation plant 110 inhales and stores carbon dioxide.

In the fourth step (S40), carbon dioxide stored in the carbon dioxide suction tank 620 is directly transferred to the leaf vegetable cultivation 120. At this time, the carbon dioxide filter 640 can filter dust and spores contained in the carbon dioxide. have.

In the fifth step (S50), the oxygen sensor 650 measures the oxygen concentration of the leaf vegetable cultivation 120.

In the sixth step (S60), the oxygen concentration measured by the leaf vegetable cultivation 120 is measured under the control of the control unit.

In the seventh step (S70), if the oxygen concentration is greater than or equal to a set value, oxygen of the leaf vegetable cultivation 120 is sucked and stored.

In the eighth step (S80), oxygen stored in the oxygen intake tank 660 is transferred to the mushroom cultivation plant 110. At this time, the oxygen filter 680 may filter moisture contained in oxygen.

Meanwhile, a first hydraulic sensor (not shown) measures the internal pressure of the carbon dioxide filter 640 under the control of the control unit.

In addition, when the internal pressure of the carbon dioxide filter 640 is greater than or equal to a set value under the control of the control unit, the first return pump 691 sucks the dust and spores filtered by the carbon dioxide filter 640 to induce the mushroom cultivation ( 110).

In addition, a second hydraulic sensor (not shown) measures the internal pressure of the oxygen filter 680 under the control of the control unit.

In addition, when the internal pressure of the oxygen filter 680 is greater than or equal to a set value by the control of the control unit, the second return pump 692 sucks the filtered moisture from the oxygen filter 680 to re-cultivate the leaf vegetable 120 To pass.

In addition, stability is important for the power supplied to this system, and it is important to take countermeasures because it has a great influence on the growth of crops when malfunction occurs.

In order to prevent the malfunction of such a system, measures are needed to remove noise from the power supply.

)이 있고 여기에 고주파 교류 성분(

)이 나타난다. 교류 성분의 크기를 리플이라고 부르며 리플의 주파수는 PWM 주파수, 즉 스위칭 주파수와 동일하다.Figure 9 shows a conventional switching power supply, the power conversion circuit of the conventional switching power supply, the input voltage 11 is supplied, switching occurs when a PWM signal is applied to the gate signal of the switching circuit 12, Accordingly, a square wave voltage is input to the transformer 13 and the output voltage of the transformer 13 is rectified by a diode 14 circuit. The rectified voltage appears as an output voltage of a direct current or low frequency component by the low frequency filter 15, and a high frequency ripple component appears small. The switching circuit 12 has a variety of types, from circuits with one switching element to multiple circuits, and includes a circuit system without the transformer 13. When observing the waveform of the output voltage, as shown in the graph, DC or low frequency components (

) And high frequency alternating current component (

) Appears. The magnitude of the AC component is called ripple, and the frequency of ripple is the same as the PWM frequency, that is, the switching frequency.

The voltage conversion ratio, which is the ratio of the output voltage and the input voltage, is determined by the duty ratio of the PWM signal, and since it has no direct relationship with the PWM frequency, even if the PWM frequency is changed, the output voltage is affected. Do not receive. That is, the circuit for controlling the magnitude of the output voltage and the circuit for limiting ripple are independent. The function of controlling the output voltage is in charge of the voltage control unit, and is performed by comparing the output voltage measurement value with the reference value to adjust the duty ratio.

The present invention uses the relationship that the magnitude of the output voltage ripple is inversely proportional to the switching frequency and the capacity of the capacitor for the low frequency filter. If the switching frequency is increased when the ripple is greater than the reference value, the ripple decreases and the magnitude of the output voltage is not affected.

10 shows a switching power supply according to the present invention, in a manner in which a ripple control section 30 is added so as to change the frequency of the PWM signal used in the voltage control section 20 which is a component constituting the conventional switching power supply. Applies. It can be applied regardless of the type of power conversion circuit unit 10. Since the PWM signal generation is operated to turn on the switch when the duty ratio signal is greater than the triangle wave by comparing the triangular wave and the duty ratio signal, the PWM frequency is the same as the frequency of the triangular wave signal and the duty of the PWM signal The ratio is independent of the switching frequency and is determined by the duty ratio signal.

In the present invention, a method of adjusting the input signal of the triangular wave oscillator is applied to increase the switching frequency when the ripple of the switching power supply exceeds the upper limit. Looking at the detailed operation of the ripple control unit 30, the high-frequency filter 31 is used to extract the high-frequency component from the output voltage of the switching power supply circuit, and the amplitude detector 32 to measure the amplitude corresponding to the size of the ripple Using, and comparing the ripple measured value and the upper limit of the ripple, the frequency control signal is generated by the ripple controller 33 using the result and input to the triangular wave oscillator 23.

The ripple controller 33 has a function of increasing the frequency control signal when the ripple measurement value is greater than the upper limit of ripple and decreasing it in the opposite case, and a proportional-integral controller or lead-lag to secure control performance and stability It is implemented by a control method such as a compensator. The frequency control signal generated by the ripple controller is input to the triangular wave oscillator to determine the switching frequency. In order to prevent the frequency from becoming too low or too high, the switching frequency is limited.

)와 상한치(

)를 벗어나지 않도록 한다. 스위칭 주파수의 하한치와 상한치는 전력변환회로의 설계 또는 특성시험에서 결정되는 값이다. 인덕터, 변압기 등의 자성 부품(Magnetic components)은 전압의 주파수가 감소하면 자속 포화의 가능성이 있다는 점을 고려하여 주파수 하한치가 결정되며, 주파수 상한치는 이론적으로는 제한이 없지만, 주파수 증가에 따라 스위칭 손실이 증가한다는 문제와 사용되는 부품들의 주파수 특성을 고려하여 결정된다.11 is a diagram showing the relationship between the frequency control signal and the switching frequency according to the present invention. Even if the frequency control signal changes over a wide range, the switching frequency is the lower limit (

) And upper limit (

). The lower limit and upper limit of the switching frequency are values determined in the design or characteristic test of the power conversion circuit. In the case of magnetic components such as inductors and transformers, the lower frequency limit is determined considering the possibility of magnetic flux saturation when the frequency of the voltage decreases. This increase is determined by considering the problem and the frequency characteristics of the parts used.

12 shows an example of an electronic circuit that implements the ripple control unit of FIG. 10 as an operational amplifier (OP Amp). A band pass filter (BPF) is used to block direct and low frequency components from the output voltage signal of the power supply and extract high frequency components corresponding to the switching frequency. The band pass filter may be a high frequency filter, but is intended to prevent malfunction due to switching noise. The frequency characteristic of the band pass filter is set to include the switching frequency, and the fundamental frequency of the output voltage (DC component in case of DC voltage output and AC component in case of AC voltage) and switching noise are not allowed to pass. Envelop Detector circuit is applied as a method for amplitude detection, and a proportional-integral compensator is applied to generate a frequency control signal by comparing the amplitude measurement and the upper limit of ripple, and two diodes of the clipper circuit to limit the range of the control signal It is implemented as The generated frequency control signal is input to a voltage-controlled oscillator (VCO) to create a triangular waveform. A voltage-controlled oscillator (VCO) circuit capable of generating a triangular waveform may be implemented using an operational amplifier, but may also be implemented using a commercially available dedicated IC (LM566, LTC6990, etc.). This triangular waveform is supplied for the PWM signal generation of the switching power conversion circuit.

13 shows an example of an algorithm for implementing a ripple control unit according to the present invention in software. The control function of the switching power supply can also be implemented by software using a microprocessor. Among them, the method implemented by software algorithm inside the microprocessor in determining the switching frequency for PWM signal generation is as follows.

When the lower limit and upper limit of the switching frequency are set in advance, and the upper limit of the output voltage ripple is also set, the output voltage ripple is measured at each ripple limit period, and the ripple measurement value and the upper limit of ripple are compared. If the measured value is greater than the upper limit, the switching frequency is increased. Otherwise, the switching frequency is decreased. Here, the switching frequency is determined through a switching frequency limiting process so that the determined frequency does not deviate from the lower and upper limits of the switching frequency. Repeat this process periodically. The switching frequency determined here is applied to the PWM signal generation required for the output voltage control function of the power supply.

)와 크기를 비교하는 단계; 상기 측정한 리플의 크기가 미리 정한리플 상한 설정치(

)보다 큰 경우, 일정량의 주파수를 증가시키고, 상기 리플 상한 설정치(

)보다 작은 경우, 일정량의 주파수를 감소시키며, 주파수가 미리 정한 최소주파수보다 작은 경우, 그때의 주파수를 PWM 신호의 주파수로 결정하며, 상기 주파수가 미리정한 최소 주파수보다 큰 경우, 상기 주파수가 스위칭 주파수 상한치, (

)가 미리정한 최대 주파수보다 크면, 그때의 주파수는 최대주파수(

)로 셋팅되며, 상기 주파수가 상기 최대주파수(

)보다 작으면, 그때의 주파수로 PWM 신호의 주파수로 설정하는 방법으로 구성된다.A method of generating a PWM signal for a switching frequency of a switching power supply includes measuring ripple of an output voltage; The measured ripple upper limit is the predetermined ripple upper limit (

) And comparing the size; The measured ripple size is a predetermined ripple upper limit value (

), A certain amount of frequency is increased, and the ripple upper limit is set (

), A certain amount of frequency is reduced, and if the frequency is less than a predetermined minimum frequency, the frequency at that time is determined as the frequency of a PWM signal, and when the frequency is greater than a predetermined minimum frequency, the frequency is the switching frequency Upper limit, (

) Is greater than a predetermined maximum frequency, the frequency at that time is the maximum frequency (

), And the frequency is the maximum frequency (

If less than), it is configured by setting the frequency of the PWM signal to the frequency at that time.

The present invention is not limited to the above-described embodiments, and the scope of application is various, of course, and various modifications can be implemented without departing from the gist of the present invention as claimed in the claims.

100: housing
101: sidewall
102: window
110: mushroom cultivation
120: leaf vegetable cultivation
130: air conditioning area
140: management area
150: harvest area
200: solar power generation device
210: solar panel
220: MPPT converter
230: DC bus
240: DC / AC inverter
300: light irradiation device
400: mushroom cultivation shelf
500: leaf vegetable cultivation panel
600: air conditioning device
700: Humidity control device
710: moisture absorbing member
720: humidity sensor
730: rotor

Claims (6)

A housing 100 divided into a mushroom cultivation plant 110, a leaf vegetable cultivation plant 120, an air conditioning area 130, a management area 140, and a harvest area 150 by a plurality of side walls 101;
A light irradiation device 300 for irradiating a light source with the mushroom cultivation plant 110 and the leaf vegetable cultivation plant 120;
A mushroom cultivation shelf 400 stacked on the mushroom cultivation plant 110 and cultivated mushrooms;
A leaf vegetable cultivation shelf 500 stacked on the leaf vegetable cultivation 120 and cultivated leaf vegetables;
It is installed in the air conditioning area 130 and stores the carbon dioxide discharged from the mushroom growing plant 110 to transfer to the leaf growing plant 120 or stores the oxygen discharged from the leaf growing plant 120 to store the mushroom growing plant 110. An air conditioner 600 for controlling carbon dioxide concentration, humidity, and temperature of the mushroom cultivation plant 110 and the leaf vegetable cultivation plant 120; And
The control unit for controlling the light irradiation device 300 and the air conditioning device 600 based on IOT; including leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms.
The method of claim 1, wherein the air conditioning device 600 is
Carbon dioxide sensor (610) for measuring the carbon dioxide concentration of the mushroom cultivation (110),
If the carbon dioxide concentration measured by the carbon dioxide sensor 610 is greater than or equal to a set value, a carbon dioxide intake tank 620 for inhaling and storing carbon dioxide of the mushroom growing plant 110,
A carbon dioxide pump 630 for transferring the carbon dioxide stored in the carbon dioxide suction tank 620 to the leaf vegetable cultivation 120,
A carbon dioxide filter 640 installed between the carbon dioxide suction tank 620 and the carbon dioxide pump 630 to filter dust and spores contained in carbon dioxide,
Oxygen sensor 650 for measuring the oxygen concentration of the leaf vegetable cultivation (120),
An oxygen intake tank 660 for inhaling and storing oxygen in the leaf vegetable cultivation 120 when the oxygen concentration measured in the leaf vegetable cultivation 120 is greater than or equal to a set value;
An oxygen pump 670 for delivering oxygen stored in the oxygen intake tank 660 to the mushroom cultivation plant 110,
Leaf and vegetable cultivation system including an oxygen filter 680 installed between the oxygen intake tank 660 and the oxygen pump 670 to filter moisture contained in oxygen.
The method of claim 2, wherein the air conditioning device 600 is
A first return pump 691 that suctions dust and spores filtered by the carbon dioxide filter 640 and delivers them to the mushroom cultivation 110;
Leaf vegetable and mushroom cultivation system including a second return pump (692) for sucking the moisture filtered by the oxygen filter (680) and delivered to the leaf vegetable cultivation (120).
The method of claim 1, wherein the light irradiation device 300
LED for generating a light source,
And an optical filter for supplying by adjusting the wavelength of the light source of the LED to a specific wavelength for the growth and growth of mushrooms and leafy vegetables,
Leaf vegetable and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms, including a tray for adjusting the azimuth of the solar panel 210.
The method of claim 4, wherein the optical filter
In the growth mode of adjusting the light source wavelength of the LED to 430nm, 450nm, 640nm or 660nm, and oxygen and mushrooms generated from leafy vegetables operated in any one of the growth mode applying the light source wavelength of the LED to 380nm or 405nm Leaf vegetable and mushroom cultivation system through mutual exchange of carbon dioxide.
According to claim 1,
A moisture absorbing member 710 coupled to the inner surface of the window 102 formed on the side wall 101 constituting the mushroom cultivation 110 of the housing 100 to absorb moisture of the mushroom cultivation 110 and the window 102 ) The humidity sensor 720 coupled to the inner surface to measure the humidity of the mushroom cultivation plant 110 and the humidity absorbing member 710 exposed outside when the humidity measured by the humidity sensor 720 is below a predetermined value. Humidity control device 700 including a rotor 730 to rotate the window 102 as much as possible; further comprising leaf and mushroom cultivation system through the exchange of oxygen generated from leaf vegetables and carbon dioxide generated from mushrooms.

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