CN204145846U - The illumination control system of the intelligent plant factor of a kind of employing multicolor LED - Google Patents

Abstract

The utility model discloses an illumination control system for an intelligent plant factory using multi-color LEDs, which calculates the luminous power ratios of various light colors by detecting the luminous power of LED plant lights of different light colors, and calculates the luminous power ratios of various light colors according to the LED plant lights of various light colors. The ratio of the luminous power and the preset reference luminous power ratio are calculated and the lighting control signal is sent out. The lighting control signal controls the luminous power of LED plant lights with different light colors, so that the luminous power ratio of various light colors matches the reference luminous power ratio. to meet the light requirements of different growth stages of plants. Through continuous and real-time online detection of the luminous power of LED plant lights with various light colors, the luminous power of LED plant lights with various light colors can be adjusted in combination with the light requirements of plants in different growth stages, so that the plants in the plant factory are in the most optimal state. Optimum growth status, and improve the energy utilization rate of plant factories, saving energy.

Description

A lighting control system for an intelligent plant factory using multi-color LEDs

technical field

The utility model relates to the technical field of plant factories, in particular to an illumination control system of an intelligent plant factory using multi-color LEDs.

Background technique

The plant factory integrates biotechnology, modern optoelectronic technology, information technology, mechanical engineering, artificial environment control and other high technologies. It is recognized as the most advanced development stage of agriculture in the world. It is considered to be an effective way to solve population, resource and environmental problems in the future. technical means. Hundreds of plant factories abroad, especially in Europe, America, Japan, and South Korea, have been put into operation, and they have begun to make profits by planting cash crops such as ginseng and flowers. Seasonal vegetables such as lettuce and tomatoes grown in plant factories are becoming more and more popular and have appeared in many supermarkets including Taiwan. Plant factories can save more than 90% of water consumption and more than 90% of chemical fertilizers; because of no pesticides and soilless cultivation, 100% food safety is guaranteed; because of indoor multi-layer cultivation, land resources can be saved hundreds of times; because plant factories It can be built in the center of the city, saving transportation costs and helping to improve urban air quality.

In recent years, the degree of urbanization in mainland China has been increasing, and at the same time, it is also facing a series of problems such as the shortage of land resources and land pollution. Plant factories are an effective solution to these problems. In the past, the development of plant factories in China was mainly restricted by high energy consumption; in recent years, the use of semiconductor light-emitting diode (LED) lighting has reduced the energy consumption of plant factories in the past by about 50%. On the one hand, it is because the energy efficiency of LED is higher than that of traditional light sources. On the other hand, it is because there are many unnecessary wavelengths in the spectrum of traditional light sources, which have little effect on promoting plant growth. LED light source has many important characteristics different from other traditional electric light sources, such as energy saving and environmental protection, less heat generation, easy to disperse or combine control, etc. The use of LEDs to provide lighting and regulate light quality during plant growth can not only regulate the growth and development of plants, shorten the cultivation cycle, improve quality, but also reduce energy consumption and cost. For example, a recent research report has shown that the use of 630nm red LED light source and 460nm blue LED light source, and the ratio of the two is 8:1, the most conducive to the growth and development of lettuce, the highest nutritional index of lettuce, and can effectively Reduce power consumption of light sources.

The use of LEDs in plant factories is still in its early stages. Not only there is still a lot of room for improvement in LED energy efficiency, but there is still a lot of work to be done in the formulation of LED spectra. Continue to develop efficient and intelligent LED lighting technology, which is expected to further improve the technical level of LED used in plant factories and greatly reduce energy consumption.

At present, the power ratio of red light and blue light in plant factories is fixed, but in fact different types of plants require different light intensities and ratios at different growth stages, resulting in plants in plant factories not being in the best growth state , and cannot perform continuous and real-time online light monitoring and light control for red, blue and other polychromatic lights according to the growth status of plants.

Utility model content

Aiming at the technical problems existing in the current plant factory, the utility model proposes an illumination control system of an intelligent plant factory using multi-color LEDs.

The utility model proposes a lighting control system for an intelligent plant factory using multi-color LEDs, including: LED plant lights of various light colors, optical power detection devices, lighting control devices, and plant light control circuits;

A variety of light color LED plant lights are arranged in the plant factory to provide plants with a variety of light colors of light;

The optical power detection device is arranged between the plants and/or between the leaves of the plant to detect the luminous power of LED plant lights of various light colors; the optical power detection device includes optical power detection modules of various light colors, and the optical power detection module It includes crystalline silicon photovoltaic chips and glass substrates coated with band-pass filter films covering the surface of crystalline silicon photovoltaic chips. The band-pass filter films are composed of multi-layer interference films. allow transmission with a predetermined wavelength range;

The optical power detection device is connected with the lighting control device, the lighting control device is connected with the plant light control circuit, and the plant light control circuit is connected with various light color LED plant lights.

Preferably, the multi-color LED plant lights include red light and blue light, and the optical power detection device includes a red light power detection module and a blue light power detection module. The red light power detection module is used to detect the luminous power of the red light, and the blue light The power detection module is used to detect the luminous power of the blue light.

Preferably, the quantity ratio of red light and blue light is 4-6:1.

Preferably, the quantity ratio of red light and blue light is 5:1.

Preferably, the multi-color LED plant lights also include infrared lamps and/or ultraviolet lamps, and the optical power detection device also includes an infrared optical power detection module and an ultraviolet optical power detection module, and the infrared optical power detection module is used to detect the light emission of the infrared lamps Power, the ultraviolet light power detection module is used to detect the luminous power of the ultraviolet lamp.

Preferably, the optical power detection device includes a signal amplification circuit and an A/D conversion circuit, the optical power detection module is connected to the signal amplification circuit, the signal amplification circuit is used to amplify the detected signal, and the signal amplification circuit and the A/D conversion The circuit is connected, and the A/D conversion circuit is used for A/D conversion of the amplified signal into a digital signal.

Preferably, the lighting control device compares the actual luminous power ratios of detected multiple light-color LED plant lights with the preset reference luminous power ratios and sends out lighting control signals, and the plant light control circuit controls different light-color LEDs according to the lighting control signals. The luminous power of the plant lamp makes the actual luminous power ratio of various light color LED plant lights match the reference luminous power ratio.

Preferably, the lighting control device includes an input module, a calculation module, a storage module, a comparison module and an output module; the luminous power of the LED plant lights of various light colors detected by the optical power detection device is input through the input module, and the input module is connected to the calculation module , the calculation module calculates the actual luminous power ratio according to the luminous power of LED plant lights with various light colors, the storage module pre-stores the preset luminous power ratio determined according to the lighting requirements of plants in different growth stages, and the calculation module, storage module and comparison The modules are connected, and the comparison module compares the actual luminous power ratio with the preset luminous power ratio and sends out a light control signal. The comparison module is connected to the output module, and the light control signal is output to the plant lamp control circuit through the output module.

In the illumination control process of the utility model, the actual luminous power ratio of various light-color LED plant lights is calculated by detecting the luminous power of different light-color LED plant lights, and the calculation is performed according to the actual luminous power ratio and the preset reference luminous power ratio And send out a light control signal, and then control the luminous power of LED plant lights with different light colors according to the light control signal, so that the luminous power ratio of various light colors matches the reference luminous power ratio to meet the lighting needs of plants in different growth stages.

Through continuous and real-time online detection of the luminous power of LED plant lights with various light colors, the luminous power of LED plant lights with various light colors can be adjusted according to the light requirements of plants at different growth stages, so as to provide reasonable and sufficient light for plant growth. Light nutrition makes the plants in the plant factory in the best growth state, which is beneficial to the growth of plants, improves the energy utilization rate of the plant factory, and saves energy.

Description of drawings

Fig. 1 is a schematic structural diagram of an illumination control system for an intelligent plant factory using multi-color LEDs proposed by an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an optical power detection device proposed by an embodiment of the present invention.

Detailed ways

As shown in Figure 1 and Figure 2, Figure 1 is a schematic structural diagram of a lighting control system for an intelligent plant factory using multi-color LEDs proposed by an embodiment of the present invention, and Figure 2 is a light control system proposed by an embodiment of the present invention. Schematic diagram of the power detection device

Referring to Fig. 1, an illumination control system for an intelligent plant factory using multi-color LEDs proposed by an embodiment of the utility model includes: LED plant lights of various light colors, optical power detection devices, light control devices, and plant light control circuits ;

In the intelligent plant factory, LED plant lights with multiple light colors are provided, and the LED plant lights with multiple light colors include red LED plant lights and blue LED plant lights, and the numbers of the two are M and N respectively, of which , the red LED plant light and the blue LED plant light emit red light and blue light respectively, providing red light and blue light for the plants in the intelligent plant factory;

A plurality of optical power detection devices are arranged between the plants and/or between the leaves of the plants to detect the luminous power of the red LED plant lights and the blue LED plant lights.

Referring to Fig. 2, in this embodiment, the optical power detection device includes a housing 1 and a transparent optical window 2, the transparent optical window 2 is mounted on the housing 1, and a red light power detection module and a blue light power detection module are arranged in the housing 1. The detection module, the red light power detection module and the blue light power detection module all include a crystalline silicon photovoltaic chip 3 and a glass substrate 4 coated with a band-pass filter film 5 covering the surface of the crystalline silicon photovoltaic chip 3. The band-pass filter film 5 is composed of a multilayer Interference film composition; wherein, the band-pass filter film 5 of the red light power detection module only allows the red light from 630nm to 660nm to pass through, and the band-pass filter film 5 of the blue light power detection module only allows the blue light from 440nm to 470nm to pass through, and, Output pins 6 are respectively provided on the two optical power detection modules, and the detected optical power signals are respectively output in the form of voltage through the output pins 6;

The optical power detection device is connected with the lighting control device, the lighting control device is connected with the plant light control circuit, and the plant light control circuit is respectively connected with the red LED plant light and the blue LED plant light.

During the working process, the lighting control device compares the actual luminous power ratio of the detected multiple light-color LED plant lights with the preset reference luminous power ratio and sends out a lighting control signal. The plant light control circuit controls different lights according to the lighting control signal. The luminous power of the multi-color LED plant lights makes the actual luminous power ratio of the various light-color LED plant lights match the reference luminous power ratio, so as to meet the lighting needs of plants in different growth stages.

In this embodiment, the lighting control device includes an input module, a calculation module, a storage module, a comparison module, and an output module; the luminous power of various light-color LED plant lights detected by the optical power detection device is input through the input module, and the input module and The calculation module is connected. The calculation module calculates the actual luminous power ratio according to the luminous power of LED plant lights with various light colors. The storage module pre-stores the preset luminous power ratio determined according to the lighting requirements of plants in different growth stages. The calculation module, storage The module is connected to the comparison module, the comparison module compares the actual luminous power ratio and the preset luminous power ratio and sends out a light control signal, the comparison module is connected to the output module, and the light control signal is output to the plant lamp control circuit through the output module;

During the illumination control process, when the red and blue light power ratio is less than the reference luminous power ratio, the first illumination control signal is sent according to the difference between the two to control the luminous power of the red LED plant light and the blue LED plant light through the plant light control circuit, When the red and blue light power ratio is greater than the reference luminous power ratio, a second light control signal is sent according to the difference between the two to control the luminous power of the red LED plant light and the blue LED plant light through the plant light control circuit, so that the red and blue light luminous power The scale matches the reference luminous power scale.

In specific implementation, the plant light control circuit controls the luminous power of the red LED plant light and the blue LED plant light according to the light control signal, which can be carried out in the following manner: A. By controlling the opening of the red LED plant light and the blue LED plant light B. Control the luminous power of red LED plant lights by controlling the power supply voltage or supply current of each red LED plant light, and control the power supply voltage or supply current of each blue LED plant light To control the luminous power of the blue LED plant light; C. Use the combination of A mode and B mode to control the luminous power of the red LED plant light and the blue LED plant light.

In the actual application process, according to the ratio requirements of red light and blue light for plant growth, the initial number of the number M of red LED plant lights and the number N of blue LED plant lights can be M:N=5:1, the power of red and blue light The ratio can vary from 10:1 to 2:1 depending on plant growth needs.

In a further embodiment, according to the detection results of multiple red light power detection devices and multiple blue light power detection devices, the illumination control device can calculate the uniformity of the luminous power of red light and blue light in the space environment of the plant factory according to the detection results, And further adjust the parameters such as the installation position and irradiation direction of the red LED plant light and the blue LED plant light according to the calculation results to meet the uniformity requirements.

In the above embodiments, the reference luminous power ratio is determined according to the lighting requirements of plants in different growth stages, specifically, the reference luminous power ratio is determined according to the light power of red light and blue light in natural sunlight in different growth stages of plants And sure.

The reference luminous power ratio can be determined according to the luminous power of various light colors in sunlight when different plants are in the best production areas and high-yield growing seasons. Or the luminous power of red light and blue light of grapes or wolfberries in sunlight at different growth stages during the high-yield season in Ningxia. Alternatively, the reference luminous power ratio can be determined by taking the average of the luminous power of various light colors in sunlight when different plants are in multiple optimal production regions and growing seasons, for example, growing vegetables in intelligent plant factories It can be calculated according to the luminous power of red light and blue light in sunlight in different growth stages of corresponding vegetables in different regions at home and abroad, and by using an appropriate calculation method.

In the light control process of the intelligent plant factory, when the LED plant light initially emits light, the light control device controls the red LED plant light and the blue LED plant light to work under the reference luminous power ratio through the plant light control circuit, so that the plants are from In the early stage of growth, it begins to grow under better light and nutrition.

In the above-mentioned embodiments, the reference luminous power ratio is determined according to the illumination requirements of plants at different growth stages. Analyze the results to adjust and modify the reference luminous power. In the specific implementation process, the light control device records and stores the red light luminous power and blue light luminous power of plants at different stages. , you can increase or decrease the ratio of red and blue light luminous power and observe its growth, so as to obtain a better ratio of red and blue light power in this growth stage, and further compare the red and blue light power of this growth stage in the reference luminous power ratio The ratio is replaced or adjusted to achieve the purpose of optimizing the reference luminous power ratio.

In the actual application process, visible light LED plant lights of other colors such as green light and yellow light can also be set according to actual needs. Correspondingly, a green light power detection module and a yellow light power detection module can be installed in the light power detector device. In this way, the optical power detection modules of multiple light colors are integrated on one optical power detection device to detect the luminous power of LED plants with multiple light colors.

In a further embodiment, in order to provide comprehensive nutrition for the growth of plants, the LED plant lights also include infrared LED plant lights and/or ultraviolet LED plant lights, and the infrared LED plant lights and ultraviolet LED plant lights emit infrared light and ultraviolet light respectively. The plants in the plant factory provide infrared light illumination and ultraviolet light illumination; correspondingly, the optical power detection device also includes an infrared light power detection module and an ultraviolet light power detection module, which are used to detect the infrared light emitted by the infrared LED plant lamp respectively. The optical power of the light and the optical power of the ultraviolet light emitted by the ultraviolet LED plant lamp.

In the actual application process, according to actual needs, invisible light LED plant lights of other colors besides infrared and ultraviolet can also be set, and an optical power detection device is set accordingly to detect its optical power.

In the embodiment of the utility model, through continuous and real-time online detection of the luminous power of LED plant lights with various light colors, the luminous power of LED plant lights with various light colors can be adjusted according to the lighting requirements of plants in different growth stages. Provide reasonable and sufficient light and nutrition for plant growth, so that the plants in the plant factory are in the best growth state, which is conducive to the growth of plants, and improves the energy utilization rate of the plant factory and saves energy.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (8)

1. an illumination control system for the intelligent plant factor of employing multicolor LED, is characterized in that, comprising: multiple photochromic LED plant lamp, optical power detecting device, illumination control device, plant lamp control circuit;

Multiple photochromic LED plant lamp is arranged in plant factor as plant provides multiple photochromic illumination;

For detecting the luminous power of multiple photochromic LED plant lamp between the plant that optical power detecting device is located at plant and/or between blade; Optical power detecting device comprises multiple photochromic optical power detecting module, optical power detecting module comprises crystal silicon photovoltaic chip and covers the glass negative being coated with bandpass filtering film of crystal silicon photovoltaic chip surface, bandpass filtering film is made up of multi-coated interference film, and the bandpass filtering film of often kind of photochromic optical power detecting module only allows the light transmission with predetermined wavelength range;

Optical power detecting device is connected with illumination control device, and illumination control device is connected with plant lamp control circuit, and plant lamp control circuit is connected with multiple photochromic LED plant lamp.

2. the illumination control system of the intelligent plant factor of employing multicolor LED according to claim 1, it is characterized in that, multiple photochromic LED plant lamp comprises red globe lamp and blue-ray light, optical power detecting device comprises ruddiness power detection module and blue power detecting module, ruddiness power detection module is for detecting the luminous power of red globe lamp, and blue power detecting module is for detecting the luminous power of blue-ray light.

3. according to the illumination control system of the intelligent plant factor of employing multicolor LED according to claim 2, it is characterized in that, the quantitative proportion of red globe lamp and blue-ray light is 4-6:1.

4. according to the illumination control system of the intelligent plant factor of employing multicolor LED according to claim 3, it is characterized in that, the quantitative proportion of red globe lamp and blue-ray light is 5:1.

5. the illumination control system of the intelligent plant factor of employing multicolor LED according to claim 2, it is characterized in that, multiple photochromic LED plant lamp also comprises infrared lamp and/or uviol lamp, optical power detecting device also comprises infrared light power detection module and uv power detecting module, infrared light power detection module is for detecting the luminous power of infrared lamp, and uv power detecting module is for detecting the luminous power of uviol lamp.

6. the illumination control system of the intelligent plant factor of employing multicolor LED according to claim 1, it is characterized in that, optical power detecting device comprises signal amplification circuit and A/D change-over circuit, optical power detecting module is connected with signal amplification circuit, signal amplification circuit is used for carrying out amplification process to the signal detected, signal amplification circuit is connected with A/D change-over circuit, and A/D change-over circuit is used for converting digital signal to carrying out A/D through amplifying signal.

7. the illumination control system of the intelligent plant factor of the employing multicolor LED according to any one of claim 1-6, it is characterized in that, illumination control device compares concurrent bright dipping according to control signal according to the actual luminous power ratio of the multiple photochromic LED plant lamp of detection and default reference luminous power ratio, plant lamp control circuit controls the luminous power of different photochromic LED plant lamp according to illumination control signal, and the actual luminous power ratio of multiple photochromic LED plant lamp is matched with reference to luminous power ratio.

8. the illumination control system of the intelligent plant factor of employing multicolor LED according to claim 7, is characterized in that, illumination control device comprises input module, computing module, memory module, comparison module and output module, the luminous power of the multiple photochromic LED plant lamp that optical power detecting device detects is inputted by input module, input module is connected with computing module, computing module calculates actual luminous power ratio according to the luminous power of multiple photochromic LED plant lamp, the preset emission power proportions determined at the lighting requirements of Different growth phases according to plant is prestored in memory module, computing module, memory module is connected with comparison module, comparison module compares concurrent bright dipping according to control signal according to actual luminous power ratio and preset emission power proportions, comparison module is connected with output module, illumination control signal exports plant lamp control circuit to by output module.