CN115479235A

CN115479235A - Test device and test method for determining optimal illumination ratio of plant

Info

Publication number: CN115479235A
Application number: CN202211312017.1A
Authority: CN
Inventors: 李春林; 许剑平; 陈天宇; 李珊珊; 刘新伟; 曲宁; 张式雷; 纪玉顺; 封姣; 段少鹏; 高亚飞
Original assignee: Qingdao Guanzhong Ecology Co ltd
Current assignee: Qingdao Guanzhong Ecology Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2022-12-16

Abstract

The invention discloses a test device for determining the optimal illumination ratio of plants, which comprises a lamp source frame, wherein an LED module lamp and a shading curtain are detachably connected to the lamp source frame, the LED module lamp comprises a plurality of LED lamps with different wavelengths, the LED module lamp, the shading curtain and a test area correspond to each other, the shading curtain is arranged downwards around each LED module lamp, the test device also comprises a light control system connected with a power supply, the light control system can control the on-off and illumination intensity of the LED lamps, the optimal illumination ratio suitable for plant growth is researched through the matching combination among the LED lamps with different wavelengths and the adjustment of the illumination intensity of the LED lamps, the test method for determining the optimal illumination ratio of plants adopts a test device for determining the optimal illumination ratio of plants, and the steps 1-6 are carried out. The invention can determine the light-requiring characteristics of different plants in different growth periods, and provides theoretical guidance and technical support for the optimal illumination ratio of the LED lamp for plant growth.

Description

Test device and test method for determining optimal illumination ratio of plant

Technical Field

The invention belongs to the technical field of plant illumination research, and particularly relates to a test device and a test method for researching plant illumination ratio.

Background

The LED plant growth lamp is an artificial light source which takes the LED lamp as a luminous body and meets the illumination condition required by plant photosynthesis, and is suitable for plant culture or cultivation in a controllable environment, such as industrial seedling culture, facility gardening, plant tissue culture and the like. At present, white light sources are generally adopted by LED plant growth lamps in the market, green light components contained in white light are large, red light and blue light components with the highest utilization efficiency of plant photosynthesis are few, light quality and light intensity are uncontrollable, meanwhile, the light quality and the light intensity of a traditional plant growth lamp also lack scientific basis of a system, and therefore the power consumption of the common white light LED light sources is extremely high when the common white light LED light sources are applied to plant growth, and the light energy utilization efficiency is extremely low. In addition, different plants have different requirements on light quality and light intensity in different growth periods, and the photosynthesis rate of the plants can be obviously improved and the seedling energy consumption can be reduced only by accurately configuring the light source according to different plants, different growth periods and different growth environments.

In addition, most of light proportioning tests adopt 660nm wavelength red light bulbs and 460nm wavelength blue light bulbs, the selectivity is single, absorption peaks of different plants at red light and blue light are different, and the light requirements are not limited to red light and blue light, so that a test device and a test method need to be found to meet the requirement of any proportioning of multiple wavelengths of light, and the light intensity and the light height need to be automatically adjusted to efficiently determine the optimal plant light proportioning, and theoretical guidance and technical support are provided for subsequent plant light illumination.

Disclosure of Invention

In order to solve the defects in the existing research method, the invention provides the test device for researching the plant illumination ratio, which can fully utilize LED module lamps with different wavelengths to carry out different illumination treatments on plants, explore and obtain the light saturation points of different plants in different growth periods, determine the optimal illumination ratio of the plants, provide theoretical basis for adjusting the light quality of the plant growth lamp, and improve the plant light energy utilization efficiency to the maximum extent.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a test device for confirming best illumination ratio of plant, includes, the lamp source frame on the lamp source frame, one side detachable towards the test area is connected with LED module lamp and window shade, LED module lamp includes the LED lamp of a plurality of different wavelength, and corresponds each other between LED module lamp, window shade and the test area, the window shade is around every LED module lamp and set up downwards to with every test area independent interval, still include the photosystem of being connected with the power, photosystem is steerable the switch and the illumination intensity of LED lamp, through the regulation of ratio combination and LED lamp illumination intensity between the LED lamp of different wavelength, confirm the best illumination ratio of suitable vegetation.

In some embodiments of the invention, the lamp source frame is connected with a lifting device, and the lifting device can drive the lamp source frame to vertically move above the test area so as to adjust the illumination distance between the LED module lamps and the plants in the test area.

In some embodiments of the invention, the lifting device is a winch.

In some embodiments of the invention, the light source frame comprises a bearing frame, a fixing net is connected to the bearing frame, outside air can enter the test area through the fixing net, and the LED lamps are detachably connected to the fixing net.

In some embodiments of the invention, a fan is provided on the lamp holder, and the fan can send outside air to the test area.

In some embodiments of the present invention, the LED lamp has a wavelength ranging from 380 to 730nm.

In some embodiments of the invention, the window shade is an opaque flexible material.

Another object of the present invention is to provide: a test method for determining the optimal illumination ratio of a plant adopts a test device for determining the optimal illumination ratio of the plant, and comprises the following steps:

1) Selecting a red light LED lamp with the wavelength of 620-680 nm and a blue light LED lamp with the wavelength of 400-480 nm for the initial combination of the LED module lamps corresponding to the upper part of the test area, preparing a plant to be tested, placing the plant to be tested in the test area, and putting down a shading curtain with the test area corresponding to the plant to be tested;

2) The LED lamps are started through the control system, the red light photosynthetic photon flux ratio and the blue light photosynthetic photon flux ratio of the LED lamps in the test area are respectively measured through a spectrometer, the red light photosynthetic photon flux ratio and the blue light photosynthetic photon flux ratio are respectively adjusted to the initial specific ratio in a mode of increasing or decreasing the number of the LED lamps and adjusting the illumination intensity, and the illumination intensity between different light flux ratios is kept consistent;

3) Detecting the photosynthesis rate of plants in the test area by using a photosynthetic instrument, determining a test area A with the highest photosynthesis rate in the test area, finding a light saturation point a of the plant photosynthesis rate by increasing and decreasing red light and/or blue light on the basis of the photosynthetic photon flux ratio of red light and blue light corresponding to the test area A, wherein the photosynthetic photon flux ratio of the red light and the blue light when the photosynthesis rate reaches the light saturation point a is the optimal red-blue light ratio;

4) On the basis of the light saturation point a, by replacing equal number of red light LED lamps with different wavelengths, detecting whether the photosynthetic rate of the plant is increased or decreased by using a photosynthetic instrument to find out the optimal red light wavelength, and then by replacing equal number of blue light LED lamps with different wavelengths, detecting whether the photosynthetic rate of the plant is increased or decreased by using the photosynthetic instrument to find out the optimal blue light wavelength, namely the photosynthetic rate reaches a light saturation point b;

5) On the basis of the optimal red light wavelength and the optimal blue light wavelength, namely the illumination ratio that the plant photosynthetic rate reaches the light saturation point b, adding LED lamps with different wavelengths except red and blue light, determining the plant photosynthetic rate, checking whether the light saturation point is further improved, and screening out the LED lamps with the specific wavelength capable of improving the light saturation point;

6) And checking whether the light saturation point is further improved or not by increasing the number of the lamps with the specific wavelength and adjusting the illumination intensity, and finding out the optimal light quality ratio.

In some embodiments of the present invention, the light saturation point b ≧ the light saturation point a.

Compared with the prior art, the invention has the advantages and positive effects that:

1. the LED lamp core piece emits light, non-fluorescent powder emits light, the wavelength precision is high, the LED lamps with different wavelengths can adjust the light quality through increasing and decreasing the LED lamps, the plant light saturation points of different plants in different growth periods can be efficiently measured, and the optimal illumination ratio combination of the different plants in different growth periods and different illumination environments is determined;

2. a plurality of test areas are divided, and a plurality of groups of illumination proportioning tests can be carried out simultaneously, so that the test efficiency is obviously improved;

3. the far-red light LED lamp is added on the basis of visible light, the potential of the light saturation point of the plant is explored through the phenomenon of double light gain of the plant, and the light configuration of the plant is adjusted through the participation of the far-red light;

4. the height of the light source frame is adjusted through remote control of the lifting device, so that the illumination height is convenient to adjust, and the plants with different heights can be tested.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of a lamp holder according to the present invention;

FIG. 2 is a top view of the lamp holder of the present invention;

FIG. 3 is a bottom view of the lamp holder of the present invention;

FIG. 4 is a view showing an LED lamp on a lamp holder according to the present invention;

fig. 5 is a view showing the light source stand of the present invention when the window shade is lowered.

In the above figures: 1. a lamp source frame; 11. a lifting device; 111. hanging wires; 12. an LED module lamp; 121. an LED lamp with the wavelength of 640 nm; 122. an LED lamp with the wavelength of 440 nm; 123. an LED lamp with the wavelength of 730 nm; 13. a window blind; 14. a carrier; 141. fixing the net; 15. a fan.

Detailed Description

The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

In order to explore the optimal illumination ratio for plant growth, a test device for determining the optimal illumination ratio for plants is provided, referring to fig. 1 to 5, including a lamp source frame 1, in this embodiment, the lamp source frame 1 includes a bearing frame 14, and the bearing frame 14 is connected with a fixing net 141 for fixing a lamp;

further, on the lamp source frame 1, one surface facing the test area is detachably connected with an LED module lamp 12 and a blind 13, in this embodiment, the blind 13 is connected with the bearing frame 14, and the blind 13 is made of an opaque flexible material, the shading rate of the blind reaches 100%, each LED module lamp 12 has a plurality of LED lamps with the same and/or different wavelengths, and the LED lamps are detachably connected to the fixing net 141, wherein the wavelength range of the LED lamps is selected to be 380-730 nm, including an LED lamp 121 with a wavelength of 640nm, an LED lamp 122 with a wavelength of 440nm, and an LED lamp 123 with a wavelength of 730 nm;

further, the LED module lamps 12 and the light shading curtain 13 correspond to the corresponding test zones, and the light shading curtain 13 surrounds each LED module lamp 12 and is arranged downwards so as to independently space each test zone;

the LED lamp chip is adopted to emit light, and fluorescent powder does not emit light, so that the wavelength precision is high, the light quality can be adjusted by increasing and decreasing the LED lamps with different wavelengths, the plant light saturation points of different plants in different growth periods can be efficiently measured, the optimal illumination ratio combination of the different plants in different growth periods and different illumination environments can be determined, and efficient and effective support is provided for seedling culture of the plants.

In this embodiment, the light control system includes a real-time monitoring module with a timing function, an ethernet communication module, a control module, and a light intensity regulation and control module, the real-time monitoring module can display the status of the LED lamp and control the control module to regulate the light intensity of the LED lamp, the ethernet communication module can communicate the control module, the light intensity regulation and control module, and the control module is used for controlling the switching of the LED lamp and feeding back the LED lamp to the real-time monitoring module through the ethernet communication module; the light intensity regulating and controlling module is used for controlling the illumination intensity of the LED lamp.

In order to be suitable for the growth height of plant, explore the growth demand of the different stage light of plant, lamp source frame 1 is connected with elevating gear 11, elevating gear 11 can drive lamp source frame 1 in the vertical removal in test area top, with the illumination distance between regulation LED module lamp 12 and the plant, and then adjustment illumination height, adapt to the not plant of co-altitude, because the mode of dismantling the change of LED lamp, and the setting of lamp source frame 1 liftable, increase and decrease through the LED lamp makes illumination light matter and light intensity can freely switch, cooperate the lift adjustment illumination intensity of light control system and lamp source frame 1.

Further, the lifting device 11 is a winch, and the winch is connected with the lamp holder 1 through a suspension wire 115.

In order to increase the mobility of air in the test area, the fan 15 is arranged on the lamp source frame 1, and the fan 15 can send external air into the test area, so that ventilation of plants in the test area is ensured, and the growth of the plants is facilitated.

According to the height and illumination requirements of plants in different growth periods, the lamp source frame 1 is connected with the lifting device, and the lifting device can drive the lamp source frame 1 to vertically move so as to adjust the illumination distance between the LED module lamp 12 and the plants in a test area; the light-shielding curtain 13 and the test zones correspond to each other, and the light-shielding curtain 13 surrounds each LED module lamp and is arranged downwards to correspond to the test zones so as to separate each test zone; the lamp source frame 1 is net-shaped and is beneficial to ventilation from top to bottom, the fan 15 is arranged on the lamp source frame 1, the fan 15 can send outside air into the test area, ventilation of plants in the test area is guaranteed, plant growth is facilitated, the wavelength range of the LED lamp is 380-730 nm, the light intensity and the light period of the LED light-emitting component are adjusted and controlled through the light control system, and automatic management of a plant illumination environment is achieved.

Example 2

1) The LED module lamps 12 on the lamp source frame 1 are initially combined and selected to be red LED lamps with the wavelength of 620-680 nm and blue LED lamps with the wavelength of 400-480 nm, a plant to be detected is prepared, the plant to be detected is placed in a test area, and a light-shading curtain 13 with the test area corresponding to the plant to be detected is put down;

2) The LED lamps are started through a control system, the red light photosynthetic photon flux ratio and the blue light photosynthetic photon flux ratio of the LED lamps in a test area are respectively measured by a spectrometer, the red light photosynthetic photon flux ratio and the blue light photosynthetic photon flux ratio are respectively adjusted to initial specific ratios by increasing or decreasing the number of the LED lamps and adjusting the illumination intensity, in the embodiment, the red light photosynthetic photon flux ratios and the blue light photosynthetic photon flux ratios in different test areas are respectively adjusted to 3;

3) Detecting the photosynthesis rate of plants in a test area by using a photosynthetic instrument, determining a test area A with the highest photosynthesis rate in the test area, finding a photosaturation point a of the plant photosynthesis rate by increasing and decreasing red light and/or blue light on the basis of the photosynthetic photon flux ratio of red light and blue light corresponding to the test area A, and setting the photosynthetic photon flux ratio of the red light and the blue light when the photosynthesis rate reaches the photosaturation point a to be the optimal red-blue light ratio;

4) On the basis of the light saturation point a, through replacing red light LED lamps with different wavelengths in equal quantity, detecting whether the photosynthetic rate of the plants is improved or reduced by using a photosynthetic instrument, finding the optimal red light wavelength within the range of 620-680 nm, then through replacing blue light LED lamps with different wavelengths in equal quantity, detecting whether the photosynthetic rate of the plants is improved or reduced by using the photosynthetic instrument, finding the optimal blue light wavelength within the range of 400-480 nm, namely the photosynthetic rate reaches a light saturation point b, and b is more than or equal to a;

5) On the basis of the optimal red light wavelength and the optimal blue light wavelength, namely the illumination ratio that the plant photosynthetic rate reaches the light saturation point b, adding LED lamps with other wavelengths outside the range of the red light wavelength and the blue light wavelength, determining the plant photosynthetic rate, checking whether the light saturation point is further improved, and screening out the LED lamps with the specific wavelength capable of improving the light saturation point;

6) And checking whether the light saturation point is further improved or not by increasing the number of the lamps with specific wavelengths and adjusting the illumination intensity, and finding out the optimal light quality ratio.

The LED lamp core is adopted to emit light, the wavelength is accurate, the light proportion of any wavelength can be selected, the wavelength range is increased to 730nm on the basis of visible light, namely far-red light, the diversity of the light source proportion is increased, the potential of the light saturation point of the plant can be researched by combining the far-red light with the double light gain phenomenon of the plant, the light morphology of the plant is adjusted to be built, the light saturation points of different plants in different growth periods and different illumination environments are efficiently measured by increasing and decreasing the light quality of the LED lamps with different wavelengths, and the optimal light proportion combination required by the growth of the different plants in different growth periods and different illumination environments is determined.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A test device for determining the optimal illumination ratio of a plant is characterized in that: including the lamp source frame, the lamp source frame is divided into a plurality of test zones, on the lamp source frame, one side detachable towards test zone is connected with LED module lamp and window shade, LED module lamp includes the LED fluorescent tube of a plurality of different wavelength, and corresponds each other between LED module lamp, window shade and the test zone, the window shade sets up downwards around every LED module lamp to with the independent interval in every test zone, still include the photosystem of being connected with the power, photosystem is steerable the switch and the illumination intensity of LED lamp, through the regulation of ratio combination and LED light illumination intensity between the LED lamp of different wavelength, confirm the best illumination ratio of suitable vegetation.

2. The test device for determining the optimal photopic configuration of plants according to claim 1, wherein: the lamp source frame is connected with a lifting device, and the lifting device can drive the lamp source frame to vertically move above the test area so as to adjust the illumination distance between the LED module lamp and the plants.

3. The testing apparatus according to claim 2, wherein the apparatus further comprises: the lifting device is a winch, and the winch is connected with the lamp source frame through a suspension wire.

4. The test device for determining the optimal photopic configuration of plants according to claim 1, wherein: the lamp source frame comprises a bearing frame, a fixing net is connected to the bearing frame, outside air can enter the test area through the fixing net, and the LED lamps are detachably connected to the fixing net.

5. The test device for determining the optimal photopic configuration of plants according to claim 1, wherein: the lamp source frame is provided with a fan which can facilitate air exchange between the test area and the outside.

6. The test device for determining the optimal photopic configuration of plants according to claim 1, wherein: the wavelength range of the LED lamp is 380-730 nm.

7. The testing apparatus according to claim 1, wherein the testing apparatus comprises: the window shade is an opaque flexible material.

8. A test method for determining the optimal illumination ratio of a plant, which adopts the test device for determining the optimal illumination ratio of a plant as claimed in any one of claims 1 to 7, and is characterized in that: the method comprises the following steps:

1) The LED module lamps are initially combined, red light LED lamps with the wavelength of 620-680 nm and blue light LED lamps with the wavelength of 400-480 nm are selected, plants to be tested are prepared, the plants to be tested are placed in a test area, and a test area shading curtain is put down;

3) Detecting the photosynthesis rate of plants in the test area by adopting a photosynthetic instrument, determining a test area A with the highest photosynthesis rate, and finding a light saturation point a of the plant photosynthesis rate by increasing and decreasing red light and/or blue light on the basis of the photosynthetic photon flux ratio of red light and blue light corresponding to the test area A, wherein the photosynthetic photon flux ratio of red light and blue light when the photosynthesis rate reaches the light saturation point a is the optimal red-blue light proportion;

5) On the basis of the optimal red light wavelength and the optimal blue light wavelength, namely the illumination ratio that the plant photosynthesis rate reaches the light saturation point b, adding LED lamps with other wavelengths except the red light and the blue light, determining the plant photosynthesis rate, checking whether the light saturation point is further improved, and screening out the LED lamps with the specific wavelength capable of improving the light saturation point;

6) And checking whether the light saturation point is further improved or not by increasing the number of the lamps with the specific wavelength and adjusting the illumination intensity, and finding out the optimal illumination ratio.

9. The test method for determining optimal photopic proportioning for plants of claim 8, wherein: the light saturation point b is more than or equal to the light saturation point a.