CN108124755B

CN108124755B - Plant factory

Info

Publication number: CN108124755B
Application number: CN201711428516.6A
Authority: CN
Inventors: 李成宇; 张洪杰; 王森
Original assignee: Zhongke Rare Earth Changchun Co ltd
Current assignee: Zhongke Rare Earth Changchun Co ltd
Priority date: 2017-12-25
Filing date: 2017-12-25
Publication date: 2020-06-19
Anticipated expiration: 2037-12-25
Also published as: CN108124755A

Abstract

The invention relates to a plant factory comprising: a lighting drive assembly for providing variable lighting to a plant factory; the control module is used for controlling the illumination driving assembly to provide controllable illumination influencing the growth of plants of corresponding types in different regions according to the types of the plants planted in various planting regions in the plant factory; the control module selects a growth configuration scheme according to the information from the at least two restrictive information acquisition modules in a manner corresponding to the plant type, and controls the illumination driving assembly and/or the environmental condition and nutrient supply module to make corresponding adjustment so that the plants of the corresponding type in the plant factory grow in a predetermined manner according with the corresponding growth configuration scheme, and the plants of the corresponding type can reach the growth target manually or automatically set for the plant factory; the invention can realize lean production of plant factories and achieve the zero-stock target according with the production characteristics of the plant factories.

Description

Plant factory

Technical Field

The invention relates to the field of modern agricultural planting, in particular to a plant factory.

Background

Plant factories have attracted extensive attention as an important mode for producing fruits, vegetables, grains and saplings in the future, and with the continuous progress of related technologies, the development and the perfection of the plant factories are continuously promoted by innovation from various angles in the industry.

Production systems of plant factories in the world are currently classified into three major types, i.e., a natural light utilization type, an artificial light utilization type, and a natural light-artificial light mixed utilization type, according to differences in illumination sources. The natural light utilization type plant factory utilizes natural light, the factory building is a large glass greenhouse or a multi-span plastic greenhouse, and monitoring and regulating equipment for various environmental factors is arranged indoors. The plant factories are influenced by natural conditions to a certain extent, the types of the planted plants are limited to a certain extent, and the biggest problem is how to realize low cost and low energy consumption of cooling in summer and heating in winter. The artificial light utilization type plant factory performs illumination regulation and control on plant illuminating lamps so as to meet the illumination requirements of corresponding plants. Natural light is utilized in a natural light-artificial light mixed utilization type, and illumination is supplemented to plants through plant light supplement lamps in cloudy days or at night, and due to the utilization of natural light, the illumination cost can be lower than that of an artificial light utilization type factory. And because of using the artificial light, can offer the faster production efficiency than the factory of natural light utilization type. However, since natural light is required to be emitted into a plant, most of the plants are large glass greenhouses or multi-span plastic greenhouses, and the same problems as those of a natural utilization type plant, such as limited plant types, low space utilization rate, high cost of cooling in summer and cooling in winter, and the like, also exist. However, for the purpose of achieving annual continuous production, providing off-season green vegetables, multi-plant type planting, large space utilization, and the like, there is a current trend toward achieving the lighting needs of plants by using artificial light through artificial light utilization type plants. Currently, plant factories are small in size, and manufacturers and users of plant factories are concerned with how to accelerate the growth of plants in plant factories at low cost. I.e. how the corresponding plants can be maintained in an optimal growth state by means of the most adapted conditions.

For example, chinese patent publication No. CN203206878U discloses a miniature plant factory controlled by an intelligent control system, which includes an automatic nutrient solution proportioning system and a plant incubator connected by a pipeline, both the automatic nutrient solution proportioning system and the plant incubator are connected to a controller, and the plant incubator includes a plant culture substrate layer and a light supplement lamp. The nutrient solution is completed through an automatic proportioning system, the precision is high, and the nutrient solution provides nutrients required by the growth of various plants; environmental factors (temperature, humidity, light intensity, CO) in plant incubator₂Concentration) and pH value, EC value, etc. of nutrient solution are collected by corresponding sensors, the collected analog signals are monitored by a controller PLC in real time, and the temperature, humidity, illumination intensity and CO of the incubator are regulated and controlled in real time₂The concentration and various parameters of the nutrient solution make the nutrient solution be most suitable for plant growth.

When a plant factory reaches a certain scale, the excess of productivity leads to the overstock of the produced plants, increases the storage cost of the plants, and further can lead to the situation of waste caused by rotting of the plants due to improper storage. Therefore, it is necessary to pay attention to how to realize lean production in plant factories so as to realize zero stock, reduce the storage cost of plants and ensure the freshness of the produced plants.

In the mechanical industry, one method for realizing zero stock by lean production of enterprises is to start production after receiving a customer order, all production activities of the enterprises are purchased, manufactured and distributed according to the order, and the warehouse is not a traditional warehouse for storing materials, but a 'hub' in the material circulation process and is a site in logistics operation. The goods flow according to the requirement of order information, thus fundamentally eliminating stagnant goods and materials and further eliminating 'stock'. In the production process of mechanical parts, the individual parts are continuously processed from raw materials into finished products until the number of orders is reached and then delivered to customers. Most mechanical parts have low preservation conditions, and a customer can order a large batch of parts for standby at one time.

Because the plant has the characteristics of high preservation condition, large price fluctuation and the like which are different from mechanical products, a retailer below cannot stock a large amount of goods sources, only purchases a small amount of goods, and replenishes the goods after the goods are out of stock. At this point, the plant factory may be required to deliver the product in a short time. However, a certain time is required from planting to harvesting of plants, various types of plants are often required to be planted in advance in order to be delivered on time, and the current technology cannot enable the growth speed of the corresponding type of plants in a plant factory to accurately meet the growth target, so that the harvesting date and the delivery date of the plants are not matched, lean production of the plant factory cannot be realized, and the 'zero stock' target which meets the production characteristics of the plant factory cannot be achieved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a plant factory. The invention can change the growth configuration scheme by combining the acquired restrictive information, and accordingly control the illumination driving assembly and/or the environmental condition and nutrient supply module to make corresponding adjustment, so that the corresponding type of plants in the plant factory grow according to a preset mode conforming to the corresponding growth configuration scheme, and the corresponding type of plants can reach the growth target manually or automatically set for the plant factory. Realizes the lean production of plant factories so as to achieve the zero stock target according with the production characteristics of the plant factories.

According to a preferred embodiment, a plant factory comprises: a lighting drive assembly for providing variable lighting conditions to the plant factory; the control module is used for controlling the illumination driving assembly to provide controllable illumination influencing the growth of plants of corresponding types in different regions according to the types of the plants planted in various planting regions in the plant factory; the control module selects a growth configuration scheme according to the information from the at least two restrictive information acquisition modules in a mode corresponding to the plant type, and controls the illumination driving assembly and/or the environmental condition and nutrient supply module to make corresponding adjustment, so that the plants of the corresponding type in the plant factory grow in a preset mode according with the corresponding growth configuration scheme, and the plants of the corresponding type can reach the growth target manually or automatically set for the plant factory.

According to a preferred embodiment, the plant factory comprises: a first restrictive information acquisition module which acquires first restrictive information related to time of plants of corresponding types from a third-party forecasting mechanism; a second restrictive information acquisition module that acquires second restrictive information relating to growth of the plant of the corresponding type by analyzing a predetermined relationship, phase, and gain between the input light illuminating the plant and the output light emitted by the illuminated plant; and a third restrictive information acquisition module that acquires third restrictive information on the environmental conditions and the nutrient supply information of the planting area of the corresponding type of plant from the environmental conditions and nutrient supply module; the control module controls the illumination driving assembly to adjust the illumination scheme of the corresponding planting area in the plant factory according to the acquired first limiting information and the acquired second limiting information, controls the environmental condition and nutrient supply module to adjust the environmental condition and nutrient supply scheme of the corresponding planting area in the plant factory, and stores the growth conditions of the corresponding type of plants in the plant factory and the first, second and/or third limiting information in a time-correlated manner, thereby obtaining the growth configuration scheme of each plant type correlated with the first, second and/or third limiting information.

According to a preferred embodiment, the control module provides at least two growth profiles in a growth rate ranking manner in relation to the respective type of plant, and determines, by means of simulation, a difference between an expected growth situation of the current plant and a growth target set to the plant factory in case of application of the at least two growth profiles, when the first restriction information changes. The difference between the expected growth condition of the current plant and the growth target set for the plant factory under the condition of applying the at least two growth configuration schemes is determined in a simulation mode, so that the plant growth speed after the corresponding growth configuration schemes are applied can more accurately accord with the growth expectation, and the reliability of the plant factory is improved.

According to a preferred embodiment, the control module orders the differences between the expected growth conditions determined by the simulation and the set growth goals in a manner correlated with the third constraint information, and thereby gives respective priorities to the respective growth configurations correlated with the differences. Since the plant factory has limited capacity and reserves and there are multiple growing areas that need to be adjusted and in extreme cases conditions in the plant factory related to the third limiting information may have insufficient capacity and reserves, sorting and grading in this way facilitates the selection of a suitable growing configuration in combination with the actual capacity and reserves of the plant factory to optimize the plant factory's capacity versus production requirements.

According to a preferred embodiment, after the control module applies the corresponding growth configuration scheme, the control module adjusts the illumination scheme of the illumination driving assembly, then the control module collects third limiting information from a third limiting information acquisition module and controls an environmental condition and nutrient supply module to adjust the environmental condition and nutrient supply scheme of the corresponding planting area in the plant factory according to the adjusted illumination scheme and the collected third limiting information, and determines whether to adjust the growth speed of the corresponding type of plant for a second time according to the analysis of the first limiting information and the second limiting information; adjusting the illumination scheme of the corresponding planting area when the growth speed of the corresponding type of plant needs to be adjusted for the second time; and acquiring first limiting information according to a first preset frequency when the growth speed of the corresponding type of plant does not need to be adjusted for the second time. According to the invention, the illumination scheme of the illumination driving assembly is adjusted through the growth configuration scheme, and then the environmental condition and nutrient supply module is controlled to adjust the environmental condition and nutrient supply scheme of the corresponding planting area in the plant factory according to the adjusted illumination scheme and the acquired third restrictive information, so that the overall control of the production speed of the plants of the corresponding type can be realized, and the lean production of the plant factory is realized.

According to a preferred embodiment, the third restrictive information acquired by the third restrictive information acquisition module includes environmental conditions and nutrient supply conditions; wherein the environmental conditions comprise at least two sets of environmental parameters including at least one of temperature, humidity, oxygen content and carbon dioxide content, ordered in terms of the extent of growth inhibition and/or the extent of growth promotion in relation to the respective types of plants, and the nutrient supply conditions comprise at least two sets of nutrient supply parameters including at least one of ion concentration in the nutrient solution, frequency of replacement of the nutrient solution and circulation period of the nutrient solution, ordered in terms of the extent of growth inhibition and/or the extent of growth promotion in relation to the respective types of plants.

According to a preferred embodiment, the illumination driving assembly is connected to an illumination element network, the illumination element network comprises illumination elements arranged above the planting areas, the illumination driving assembly is arranged in a manner of being capable of independently supplying power to the illumination elements, and the corresponding illumination elements in the illumination element network generate controllable illumination environments for plant growth of the corresponding planting areas in response to pulse currents regulated by the illumination driving assembly, wherein the illumination driving assembly is capable of outputting the regulated pulse currents and dividing one pulse period of the pulse currents into at least two controllable stages, wherein the first stage of the pulse currents can be regulated to realize the light intensity, the light emitting duration and the like of the first illumination stage corresponding to the first stage of the corresponding illumination elements in the illumination element network, The adjustment of at least one parameter of the light-emitting curve and the light-emitting spectrum can be realized by adjusting the second stage of the pulse current, so that the adjustment of at least one parameter of the light-emitting intensity, the light-emitting duration, the light-emitting curve and the light-emitting spectrum of the second light-emitting stage, corresponding to the second stage, of the corresponding lighting element can be realized, and the third stage can be obtained by adjusting the first and second controllable stages, so that the light-emitting intensity of the third light-emitting stage, corresponding to the third stage, of the corresponding lighting element is close to or equal to zero candela. The illumination driving assembly can independently control the illumination elements in the illumination element network so as to realize time-sharing zone control. According to the invention, the three light-emitting stages of one light-emitting period are subjected to fine control, so that the growth rate can be finely controlled to well match the production target.

According to a preferred embodiment, the second restrictive information analysis module comprises: at least one light sensor for detecting output light from the illuminated plant; offset light intensity determination means for determining an offset light intensity around the plant, the offset light intensity comprising artificial light and any ambient light; an analysis unit configured to: receiving detection information about the output light from the illuminated plant from the at least one light sensor, indirectly controlling, by a control module, an illumination driving assembly to cause a network of illumination elements to emit a light intensity modulation component when second restrictive information needs to be determined, determining a phase and a gain between the input light of the illuminated plant and the output light emitted by the illuminated plant, and determining a growth state of the illuminated plant based on a predetermined relationship between the input light of the illuminated plant and the output light emitted by the illuminated plant and between the phase and the gain; wherein the light intensity modulation component forms input light for illuminating a plant together with the offset light intensity, the output light emitted by the illuminated plant is fluorescence, the offset light intensity is not zero, the predetermined relationship is a transfer function comprising a set of transfer function parameters, the transfer function parameters being determined by: illuminating the plant with input light having light intensity modulation components at a plurality of modulation frequencies; detecting output light emitted from the illuminated plant; the set of transfer function parameters is determined using a system identification method. The second restrictive information obtained in this way is more accurate and reliable than image recognition to provide correct reference information for adjustment of the illumination scheme.

According to a preferred embodiment, the plant factory can be located within a container. Plant factory can make plant factory be convenient for wholly transport within locating the container, improves plant factory's flexibility. And continuous production in the transportation process can be realized, and the production efficiency is improved.

According to a preferred embodiment, the plant factory is provided internally with at least one planting platform comprising at least two planting areas, wherein the at least two planting areas are vertically spaced apart in such a way that plants of a respective type can be planted. By the mode, the space in a plant factory can be optimized and utilized, the space utilization rate is improved, and the production cost is reduced.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of a plant factory;

FIG. 2 is a block schematic diagram of a preferred embodiment of a plant factory;

FIG. 3 is a schematic flow diagram of a preferred embodiment for generating a growth configuration;

FIG. 4 is a schematic control flow diagram of the control module after application of the growth configuration protocol;

FIG. 5 is a diagram illustrating a strobe curve of a lighting cycle according to the present invention;

FIG. 6 is a diagram of a strobe curve in which five display second light emission phases;

FIG. 7 is a diagram of a strobe curve in which seven kinds of first light emission phases are shown;

FIG. 8 is a graph of spectra at A, B and C stages between 0 and 5 ms;

FIG. 9 is a graph of spectra at D, E and F stages between 0 and 5 ms;

FIG. 10 is a graph of spectra at A, B and C-stage between 10 and 12 ms;

FIG. 11 is a graph of spectra at D, E and F stages between 10 and 12 ms;

FIG. 12 is a graph of spectra at A, B and C-stage between 12 and 15 ms; and

FIG. 13 is a graph of spectra at D, E and F-stage between 12 and 15 ms.

List of reference numerals

11: the illumination driving assembly 12: lighting element network

121: the illumination element 21: first restrictive information acquisition module

22: the second restrictive information acquisition module 221: optical sensor

222: the offset light intensity determination means 223: analysis unit

23: the third restrictive information acquisition module 31: control module

41: environmental conditions and nutrients supply module 51: container, especially container for transporting goods

61: the planting platform 611: planting area

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

A plant factory according to the invention is shown below with reference to figures 1 to 13.

Example 1

According to a preferred embodiment of the present invention, referring to fig. 1 and 2, the present invention discloses a plant factory, which may comprise: a lighting driving assembly 11 and a control module 31. The lighting driving assembly 11 may be used to provide variable lighting conditions to the plant factory. The control module 31 may be configured to control the illumination driving assembly 11 to provide controllable illumination for influencing the growth of plants of a corresponding type in different areas according to the type of plants planted in each planting area 611 in the plant factory. The control module 31 may select a growing configuration scheme in a manner corresponding to the plant type based on information from the at least two restrictive information acquisition modules. The control module 31 may control the illumination driving assembly 11 and/or the environmental conditions and nutrient supply module 41 to make corresponding adjustments according to the growth configuration scheme. The adjustment will cause the plants of the corresponding type in the plant factory to grow in a predetermined manner according to the corresponding growth configuration. In this way the corresponding type of plant is brought to the growth target set manually or automatically to the plant factory. Preferably, the control module 31 may be a dedicated controller or a computer. Variable lighting conditions refer to lighting conditions that can be changed according to a lighting scheme that is adjusted according to a growth configuration scheme. Preferably, the lighting driving assembly 11 may be used to provide variable lighting conditions to the plant factory. Preferably, due to the limited production capacity of a single plant factory, multiple plant factories may need to be set up to meet the actual production needs. Preferably, a plurality of plant factories may be networked and then production requirements are assigned to respective growth targets in combination with actual planting conditions of the respective plant factories. Preferably, the information of the restrictive information acquisition module is the information according to the growth speed of the corresponding type of plant, and the growth configuration scheme is selected according to the information in a manner corresponding to the type of plant.

According to a preferred embodiment, the plant factory plants a batch of pakchoi and a batch of celery, the control module 31 obtains the first limiting information, the second limiting information and the third limiting information of the pakchoi and the celery from the first limiting information obtaining module 21, the second limiting information obtaining module 22 and the third limiting information obtaining module 23 respectively, and analyzes that the growth speed of the pakchoi needs to be slowed down so as to make the harvest time of the pakchoi move one week later, because the pakchoi does not have available buyers when the pakchoi is harvested according to the original growth speed, which results in the accumulation of the pakchoi. The analysis shows that the production speed of celery needs to be adjusted fast so that the harvest time of the celery is shifted to 3 days, because the delivery time of the customer cannot be met according to the original growth speed is obtained from the first limit new information. And then the control module respectively selects growth configuration files matched with the pakchoi and the celery according to the second restrictive information and the third restrictive information, and respectively controls the illumination driving assembly 11 and/or the environmental condition and nutrient supply module 41 of the planting area of the pakchoi and the planting area of the celery to make corresponding adjustment according to the growth configuration files, so that the corresponding type of plants in the plant factory grow according to a preset mode conforming to a corresponding growth configuration scheme, and the corresponding type of plants reach the growth target manually or automatically set for the plant factory.

According to a preferred embodiment, the at least two restrictive information acquisition modules may include at least two of the first restrictive information acquisition module 21, the second restrictive information acquisition module 22 and the third restrictive information acquisition module 23. The first restriction information obtaining module 21 may obtain time-dependent first restriction information of the corresponding type of plant. The second restriction information obtaining module 22 may obtain second restriction information on growth of the corresponding type of plant. The third restrictive information acquisition module 23 may acquire third restrictive information of the corresponding type of plant with respect to the environmental conditions and the nutrient supply information. The control module 31 of the present invention controls the illumination driving assembly 11 to adjust the illumination scheme of the corresponding planting area 611 in the plant factory and controls the environmental condition and nutrient supply module 41 to adjust the environmental condition and nutrient supply scheme of the corresponding planting area 611 in the plant factory according to the acquired first and second restrictive information, and stores the growth conditions of the corresponding type of plants in the plant factory and the first, second and/or third restrictive information in a time-dependent manner, thereby obtaining a growth configuration scheme in which each plant type is related to the first, second and/or third restrictive information. Preferably, the control module 31 is connected to the first, second and third restrictive

information acquisition modules

21, 22 and 23. Preferably, the time-dependent first limiting information of the respective type of plant is information of the production demand of the respective type of plant within a first preset time period. For example, plantlet production has projected daily market popularity, projected supply-demand relationship, or projected demand yield for the next month.

Preferably, referring to fig. 3, a preferred generation flow of the growth configuration protocol is as follows:

step S10, acquiring first restrictive information and second restrictive information;

step S20, controlling the illumination driving component 11 to adjust the illumination scheme of the corresponding planting area 611 in the plant factory and controlling the environmental condition and nutrient supply module 41 to adjust the environmental condition and nutrient supply scheme of the corresponding planting area 611 in the plant factory according to the acquired first and second restrictive information;

step S30, the growth situation of the respective type of plant in the plant factory is stored in a time-dependent manner with the first, second and/or third restriction information. Thereby obtaining a growth profile for each plant type that is associated with the first, second and/or third restriction information.

Preferably, another preferred generation process of the growth configuration scheme is that a user manually inputs configuration parameters according to empirical data and/or experimental data to form a configuration file.

According to a preferred embodiment, the control module 31 may provide at least two growth profiles in a growth rate ranking manner associated with the respective type of plant, when the first restriction information is changed. The difference between the expected growth conditions of the current plant and the growth target set to the plant factory in case of applying at least two growth configurations is determined by means of simulation.

According to a preferred embodiment, the control module 31 may rank the differences between the expected growth conditions determined by the simulation and the set growth targets in a manner correlated with the third constraint information, and thereby assign respective priorities to the respective growth configurations correlated with the differences.

According to a preferred embodiment, referring to fig. 4, after the control module 31 applies the corresponding growth configuration scheme, the control flow of the control module 31 is as follows:

step S100, the control module 31 adjusts the illumination scheme of the illumination driving component 11;

step S200, the control module 31 collects third limiting information from the third limiting information obtaining module 23 and controls the environmental condition and nutrient supply module 41 to adjust the environmental condition and nutrient supply scheme of the corresponding planting area 611 in the plant factory according to the adjusted illumination scheme and the collected third limiting information;

step S300, determining whether to secondarily adjust the growth speed of the corresponding type of plants according to the analysis of the first restrictive information and the second restrictive information; when the growth speed of the plants of the corresponding type needs to be adjusted for the second time, returning to the step S100; when the growth speed of the corresponding type of plant does not need to be adjusted for the second time, the step S400 is executed;

step S400, acquiring first restrictive information according to a first preset frequency.

Preferably, after applying the respective growth profile, the plant factory also monitors the actual growth rate of the respective type of plant under the respective lighting scheme and environmental conditions and nutrient supply scheme by means of the second restrictive information acquisition module 22, and iteratively updates the respective growth profile accordingly when the degree of matching of the actual growth rate with the predicted growth rate is below the first threshold. By the method, the regulation and control precision of the plant factory on the growth speed of the plants of the corresponding types can be continuously improved, and the production reliability of the plant factory is improved. More preferably, after iteratively updating the corresponding growth profile, the plant factory may upload the corresponding growth profile to the cloud server in a manner related to the geographic parameter and/or the device model of the plant factory, so as to be selectively used by other adapted plant factories, thereby promoting innovation of the growth profile of the plant factory.

Preferably, the control module 31 applies the growth configuration with the highest priority when applying the corresponding growth configuration.

According to a preferred embodiment, the lighting driving assembly 11 may be connected to a lighting element network 12. The lighting element network 12 may include lighting elements 121 disposed above each of the planting areas 611. The illumination driving assembly 11 may be arranged in such a way that each illumination element 121 can be independently powered. Respective lighting elements 121 in the lighting element network 12 may generate controllable lighting environments for plant growth of the respective growing areas 611 in response to the pulsed current regulated by the lighting driving assembly 11. The illumination driving assembly 11 can output the adjusted pulse current and can divide one pulse period of the pulse current into at least two controllable phases. The illumination driving component 11 may adjust at least one parameter of the light emitting intensity, the light emitting time duration, the light emitting curve and the light emitting spectrum of the first light emitting stage corresponding to the first stage of the corresponding illumination element 121 in the illumination element network 12 by adjusting the first stage of the pulse current. The illumination driving assembly 11 may adjust at least one parameter of the light emitting intensity, the light emitting time duration, the light emitting curve and the light emitting spectrum of the second light emitting stage corresponding to the second stage of the corresponding illumination element 121 by adjusting the second stage of the pulse current. The third phase can be achieved by adjustment of the illumination drive assembly 11 through the first and second controllable phases. The luminous intensity of the third lighting phase of the respective lighting element 121, corresponding to the third phase, is close to or equal to zero candela. A plurality of lighting elements 121 networked may constitute the lighting element network 12. Preferably, each illumination element 121 may be directly controlled by the illumination driving component 11, or may be controlled by an illumination driver adapted to each illumination element 121, where the illumination driving component 11 includes an illumination driving controller and an illumination driver, and the illumination driving controller controls each illumination driver. The sensitivity to the lighting conditions varies from plant type to plant type or from growing stage to growing stage of the same plant, and these can be derived experimentally and then input into the control module 31. By the mode, variable lighting conditions are realized, and the growth speed of corresponding plants is conveniently and accurately adjusted.

According to a preferred embodiment, the plant factory may be located within a container 51, as shown in FIG. 1.

According to a preferred embodiment, the interior of the plant factory may be provided with at least one planting platform 61. The planting platform 61 can include at least two planting areas 611. At least two planting regions 611 may be spaced apart in a vertical direction in such a manner that corresponding types of plants can be planted.

Example 2

This embodiment is a further improvement of embodiment 1, and repeated contents are not described again.

According to a preferred embodiment, the second restrictive information about growth of the respective type of plant may be a growth state of the respective type of plant within the respective planting area 611 in which the respective type of plant is planted and/or a growth rate of the respective type of plant under the current lighting scheme calculated from the growth state.

According to a preferred embodiment, the second restrictive information acquisition module 22 may include: at least one light sensor 221, an offset light intensity determination means 222 and an analysis unit 223. At least one light sensor 221 may be used to detect output light from the illuminated plant. The offset light intensity determination means 222 may be used to determine the offset light intensity around the plant. The offset light intensity may include artificial light and any ambient light. The analyzing unit 223 may be configured to: receiving detection information on output light from the illuminated plant from the at least one light sensor 221, indirectly controlling the illumination driving assembly 11 through the control module 31 to cause the illumination element network 12 to emit the light intensity modulation component when the second limitation information needs to be determined, determining a phase and a gain between the input light of the illuminated plant and the output light emitted by the illuminated plant, and determining a growth state of the illuminated plant based on a predetermined relationship between the input light of the illuminated plant and the output light emitted by the illuminated plant and between the phase and the gain. The light intensity modulation component together with the offset light intensity forms the input light illuminating the plant. The output light emitted by the illuminated plant is fluorescence. The offset light intensity is not zero. The predetermined relationship may be a transfer function comprising a set of transfer function parameters. The transfer function parameters may be determined by: illuminating a plant with input light having light intensity modulation components at a plurality of modulation frequencies; detecting output light emitted from the illuminated plant; a set of transfer function parameters is determined using a system identification method.

Example 3

According to a preferred embodiment, the third restrictive information acquired by the third restrictive information acquisition module 23 may include environmental conditions and nutrient supply conditions. The environmental conditions may comprise at least two sets of environmental parameters, ranked in terms of degree of growth inhibition and/or degree of growth promotion, associated with the respective type of plant. The environmental parameter may include at least one of temperature, humidity, oxygen content, and carbon dioxide content. The nutrient supply conditions may comprise at least two sets of nutrient supply parameters, ordered by the degree of growth inhibition and/or the degree of growth promotion, in relation to the respective type of plant. The nutrient supply parameter includes at least one of an ion concentration in the nutrient solution, a replacement frequency of the nutrient solution, and a circulation cycle of the nutrient solution. Through this mode, can select the environmental condition and the nourishment supply scheme of adaptation fast, reduce the adjustment time, improve adjustment efficiency.

Example 4

According to a preferred embodiment of the present invention, there is disclosed a plant factory, which, with reference to fig. 2, may comprise: and the illumination driving component 11 is used for controlling the illumination element network 12 to provide controllable illumination which is helpful for the growth of the corresponding type of plants according to the type of the plants planted in each planting area 611 in the plant factory.

The plant factory may further comprise a first restrictive information acquisition module 21 that acquires time-dependent first restrictive information of plants of the respective type from a third party forecasting authority.

The plant factory may further comprise a second restrictive information acquisition module 22 determining second restrictive information relating to growth of plants of the respective type by analyzing predetermined relations, phases and gains between the input light illuminating the plants and the output light emitted by the illuminated plants.

The plant factory may further include a third restrictive information acquisition module 23 that acquires third restrictive information on the nutrient supply information of the planting area 611 of the corresponding type of plant from the nutrient supply module 41.

According to a preferred embodiment, the third limiting information acquired by the third limiting information acquiring module 23 may include at least one of ion concentration in the nutrient solution, replacement frequency of the nutrient solution, circulation period of the nutrient solution, and concentration of carbon dioxide. Preferably, the ion concentration includes at least ion concentrations of respective ions containing nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur.

The plant factory may further comprise a control module 31 for controlling the illumination driving assembly 11 to adjust the illumination scheme of the respective planting area 611 in the plant factory based on the collected first and second limitation information. The control module 31 correlatively controls the nutrient supply module 41 to adjust the environmental conditions and nutrient supply schemes of the corresponding planting areas 611 in the plant factory according to the adjusted illumination scheme. Such that the production rate of plants of the plant type grown in the plant factory is optimized in relation to the first and third restriction information.

According to a preferred embodiment, the illumination elements 121 can be controlled separately and independently in different zones by the illumination driving assembly 11 to finely control the yield of the harvest time matched with the harvest time according to the production requirements. For example, celery is grown in three batches in the plant factory on 8 months and 12 days, 9 months and 20 days and 9 months and 26 days according to the first restrictive information acquired from the third party forecasting agency. The first batch of celery is expected to be harvested at 10 months and 12 days, the yield is expected to be 1 ton, the second batch of celery is expected to be harvested at 11 months and 20 days, the yield is expected to be 1.2 ton, and the third batch of celery is expected to be harvested at 11 months and 26 days, and the yield is expected to be 2 ton. The first restrictive information obtained from the third party forecasting authority on day 10, month 6, had a change from the first restrictive information obtained earlier. Specifically, the celery quantity is increased from 20 days in 11 months to 27 days in 11 months, the market supply is sufficient, and the celery quantity in the period is not large. The demand increases from 11 months, 27 days to 12 months, 1 day. Therefore, the control system 31 acquires the second restrictive information and adjusts the illumination scheme and the nutrient supply scheme of the illumination elements 121 of the various planting regions 611 corresponding to the second lot and the third lot according to the first restrictive information and the second restrictive information to adjust the production rate of the celery of the second lot and the third lot, so that the harvesting time of the celery planted in the second lot and the third lot is adjusted to be between 11 months and 27 days and 12 months and 1 day. Since the change in the first limiting information does not relate to a change in the production demand of the first lot, the control system may not adjust the lighting plan and the nutrient supply plan of the lighting elements 121 of each planting area corresponding to the first lot. Alternatively, the control system 31 may also employ different lighting schemes and nutrient supply schemes for different growing areas 611 of plants of a plant type of the same batch, so that production occurs in a decentralized manner when production demand decreases, to prevent impact on subsequent production planning. For example, the planting areas 611 of the second batch of celery are divided into a first group, a second group and a third group, each group adopts different illumination schemes and nutrient supply schemes, so that the harvesting time of the first group, the second group and the third group is respectively adjusted to 11 months and 20 days, 11 months and 21 days and 11 months and 22 days. The planting areas 611 of the third batch of celery are divided into a fourth group, a fifth group, a sixth group and a seventh group, each group adopts different illumination schemes and nutrient supply schemes, so that the receiving time of the fourth group, the fifth group, the sixth group and the seventh group is respectively adjusted to 11 months and 23 days, 11 months and 25 days, 11 months and 26 days and 11 months and 27 days.

According to a preferred embodiment, the control module 31 of the present invention may control the illumination driving assembly 11 to adjust the illumination scheme of the corresponding planting area 611 in the plant factory according to the first and second limitation information of the information collected from the first and second limitation

information obtaining modules

21 and 22, respectively. The control module 31 may also control the nutrient supply module to adjust the environmental conditions and nutrient supply scheme of the corresponding planting area 611 in the plant factory according to the adjusted illumination scheme.

According to a preferred embodiment, the control module 31, after obtaining the first restrictive information, may compare it with the previously obtained first restrictive information and obtain the second restrictive information if there is a change in the first restrictive information. The control module 31 may analyze whether to adjust the production rate of the corresponding type of plant according to the first and second restriction information. When the production rate needs to be adjusted, the control module 31 adjusts the illumination scheme of the corresponding planting area 611. When there is no need to adjust the production rate, the control module 31 acquires the first restrictive information at a first preset frequency.

According to a preferred embodiment, the system may further comprise: a third restrictive information acquisition module 23. The third restrictive information acquisition module 23 may acquire third restrictive information on the nutrient supply information of the planting area 611 of the corresponding type of plant from the nutrient supply module 41. After adjusting the illumination scheme, the control module 31 may collect the third restrictive information from the third restrictive information obtaining module 23 and synchronously control the nutrient supply module 41 to adjust the environmental conditions and the nutrient supply scheme of the corresponding planting area 611 in the plant factory according to the adjusted illumination scheme and the collected third restrictive information. Preferably, the adjustment of the illumination scheme may be an adjustment of the illumination frequency, the luminescence spectrum, the luminescence intensity or the luminescence parameter during a luminescence period to achieve an adjustment of the production rate of the respective type of plant.

According to a preferred embodiment, the illumination driving assembly 11 may be connected to the illumination element network 12 in such a way that each illumination element 121 can be independently powered. The respective network of lighting elements 12 generates strobed lighting environments for plant growth of the respective growing areas 611 in response to the pulsed current regulated by the lighting drive assembly 11.

According to a preferred embodiment, the illumination driving assembly 11 may output a regulated pulsed current and may divide one pulse period of the pulsed current into at least two controllable phases. The adjustment of at least one parameter of the light emission intensity, the light emission duration, the light emission curve, and the light emission spectrum of the first light emission phase corresponding to the first phase of the corresponding lighting element 121 in the lighting element network 12 can be realized by adjusting the first phase of the pulse current, the adjustment of at least one parameter of the light emission intensity, the light emission duration, the light emission curve, and the light emission spectrum of the second light emission phase corresponding to the second phase of the corresponding lighting element 121 can be realized by adjusting the second phase of the pulse current, and the third phase can be obtained by adjusting the first and second controllable phases, and the light emission intensity of the third light emission phase corresponding to the third phase of the corresponding lighting element 121 is close to or equal to zero candela.

According to a preferred embodiment, the first, second and third light emission phases have different light emission parameters. The brightness or light intensity of the second light-emitting stage is in a descending trend. The third light-emitting stage does not emit light, or the light-emitting intensity is close to or equal to zero candela, and only the first light-emitting stage and the second light-emitting stage emit light. The first and second emission periods may have different emission colors, i.e., different wavelengths of light. And the light-emitting parameters of the first light-emitting stage and the second light-emitting stage can be controlled.

According to a preferred embodiment, the middle lighting time, the lighting curve and the lighting intensity of the first lighting phase can be controlled. The emission duration, emission curve, emission intensity, emission spectrum or wavelength in the second emission phase can be controlled, wherein the emission spectrum can be varied at different points in time and the variation range can be controlled. The light emitting duration of the third light emitting stage can be controlled, and the light emitting duration can be controlled by adjusting the light emitting duration of the first light emitting stage and the second light emitting stage. The light emission intensity value at the end point of the first light emission period may be the maximum intensity value at the start point of the second light emission period, and the light emission intensity value at the start point of the second light emission period may be higher than the light emission intensity value at the end point of the first light emission period. The luminescence relative luminance is a general term of luminescence intensity, and may be in the unit of lux, lm, cd, umol/m2 × S, or the like.

According to a preferred embodiment, the interior of the plant factory is provided with at least one planting platform 61 comprising at least two planting areas 611. At least two planting regions 611 are arranged at intervals in the vertical direction. The lighting element network 12 includes lighting elements 121 disposed above each of the planting areas 611. Preferably, the various planting regions 611 are provided with a light shielding cloth or a shielding plate to prevent the illumination of the various planting regions 611 from affecting each other.

According to a preferred embodiment, the illumination element of the invention uses various types of light emitters, such as incandescent lamps, LED lamps, OLED lamps, energy saving lamps, lasers, xenon lamps, high pressure sodium lamps, etc. Preferably, the illumination element 121 comprises at least one LED lamp or fluorescent lamp. For example, the lighting element comprises at least one LED lamp or fluorescent lamp with one lamp bead or an integrated COB light source. For another example, the illumination element comprises at least one LED lamp with RGB lamp beads or a fluorescent lamp. Preferably, the illumination element of the present invention employs an LED lamp. Particularly preferably, the light emitting path of the LED lamp is coated with an after-glowing material. For example, afterglow materials are coated on light emitting paths of three lamp beads of the integrated LED lamp, which are independently powered, to form RGB (red, green, and blue) lamp beads. In that

According to another preferred embodiment, the light emitted from the illuminating element 121 may be one or two or more of monochromatic light or complex-color light. And may be one or two or more of visible light and invisible light. One or two or more of ultraviolet light and infrared light, and broad spectrum light.

According to a preferred embodiment, the second restrictive information acquisition module may include: at least one light sensor 221 for detecting output light from the illuminated plant. The second limiting information obtaining module may further comprise an offset light intensity determining means 222 for determining an offset light intensity around the plant, the offset light intensity comprising the artificial light and any ambient light. The second restrictive information acquisition module may also include an analysis unit 223. The analyzing unit 223 may be configured to: receiving detection information on output light from the illuminated plant from the at least one light sensor 221, indirectly controlling the illumination driving assembly 11 through the control module 31 to cause the illumination element network 12 to emit the light intensity modulation component when the second limitation information needs to be determined, determining a phase and a gain between the input light of the illuminated plant and the output light emitted by the illuminated plant, and determining a growth state of the illuminated plant based on a predetermined relationship between the input light of the illuminated plant and the output light emitted by the illuminated plant and between the phase and the gain. The light intensity modulation component together with the offset light intensity forms the input light illuminating the plant. The output light emitted by the illuminated plant is fluorescence, and the offset light intensity is not zero. Preferably, an image acquisition device is further arranged in the plant factory so as to check the second restrictive information in an image recognition or manual comparison mode. Preferably, the second limiting information analyzing module may further comprise an initial unit determining a set of transfer functions for mapping the growth state and the input light settings for mapping the known growth state and the light parameters before determining the growth state of the plant. Such as the spectrum and intensity of the shifted light, and the light intensity and properties of the modulated signal, etc.). A growth state (e.g., a desired growth state or a current growth state) may be defined as an attribute value indicative of at least one detectable attribute of a plant state. Such attributes may include plant height/width, stem size, growth rate, plant stress, attributes of light reflection, attributes of fluorescence, weight, C02, water or nutrient consumption, plant color, leaf size, flower size, number of leaves, flowers, fruits or seeds, timing of flower exposure to pollinating insects, time of current growth state, and the like. Further, the fluorescence property is a property of fluorescence from a plant (for example, chlorophyll fluorescence). The fluorescence of chlorophyll can be used to determine the growth status of plants.

According to a preferred embodiment, the predetermined relationship is a transfer function comprising a set of transfer function parameters, the transfer function parameters being determined by the steps of: illuminating a plant with input light having light intensity modulation components at a plurality of modulation frequencies; detecting output light emitted from the illuminated plant; a set of transfer function parameters is determined using a system identification method.

According to a preferred embodiment, the outer contour of the plant factory is defined by a container 51, as shown in fig. 1.

Example 5

According to another preferred embodiment of the present invention, there is disclosed a plant factory comprising: and the illumination driving component 11 is used for controlling the illumination element network 12 to provide controllable illumination which is helpful for the growth of the corresponding type of plants according to the type of the plants planted in each planting area 611 in the plant factory.

The plant factory of the invention further comprises: a first restrictive information acquisition module 21 that acquires first restrictive information relating to time of the plant of the corresponding type from the third party forecasting authority.

The plant factory of the invention further comprises: a second restrictive information acquisition module 22 that determines second restrictive information relating to plant growth by analyzing predetermined relationships, phases and gains between the input light illuminating the plant and the output light emitted by the illuminated plant.

The plant factory of the invention further comprises: a third restrictive information acquisition module 23 that acquires third restrictive information about the food supply information of the corresponding plant type from the food supply module 41.

The plant factory of the invention further comprises: a control module 31, configured to control the illumination driving component 11 to adjust the illumination scheme of the corresponding planting area 611 in the plant factory according to the collected first and second limiting information and synchronously control the food supply module 41 to adjust the environmental condition and the food supply scheme of the corresponding planting area 611 in the plant factory according to the adjusted illumination scheme and the collected third limiting information, so that the relationship between the production rate of the plant type growing in the plant factory and the first and third limiting information is optimized.

According to a preferred embodiment, the control module 31 is connected to the illumination driving assembly 11, the first restrictive information acquisition module 21, the second restrictive information acquisition module 22 and the third restrictive information acquisition module 23. The control module 31 collects the first restrictive information, the second restrictive information, and the third restrictive information from the first restrictive information acquisition module 21, the second restrictive information acquisition module 22, and the third restrictive information acquisition module 23, respectively.

According to a preferred embodiment, after the control module 31 obtains the first restrictive information, the control module 31 determines the optimal harvesting time, the sub-optimal harvesting time and the predicted unit nutrient consumption corresponding to the optimal harvesting time and the sub-optimal harvesting time of the plant of the corresponding type according to the second restrictive information and the third restrictive information and analyzes the optimal harvesting time and the predicted production demand corresponding to the optimal harvesting time and the sub-optimal harvesting time in the first restrictive information, when the predicted production demand at the optimal harvesting time is less than the predicted production demand at the sub-optimal harvesting time and the predicted unit nutrient consumption at the optimal harvesting time is greater than the predicted unit nutrient consumption at the sub-optimal harvesting time, the control module 31 controls the illumination driving assembly 11 to adjust the illumination scheme of the corresponding planting area 611 in the plant factory and synchronously controls the nutrient supply module to adjust the environmental conditions and the nutrient supply scheme of the corresponding planting area 611 in the plant factory according to the adjusted illumination scheme to adjust the environmental conditions and the nutrient supply scheme of the plant of the corresponding type The predicted harvest time is adjusted from the optimal harvest time to a sub-optimal harvest time.

According to a preferred embodiment, when the predicted production demand at the optimal harvesting time is equal to the predicted production demand at the suboptimal harvesting time and the predicted unit nutrient consumption at the optimal harvesting time is equal to the predicted unit nutrient consumption at the suboptimal harvesting time, the control module 31 analyzes the precedence order of the optimal harvesting time and the suboptimal harvesting time and controls the illumination driving assembly 11 to adjust the illumination scheme of the corresponding planting area 611 in the plant factory when the suboptimal harvesting time is earlier than the optimal harvesting time and synchronously controls the nutrient supply module to adjust the environmental conditions of the corresponding planting area 611 and the nutrient supply scheme in the plant factory according to the adjusted illumination scheme so as to adjust the predicted harvesting time of the corresponding type of plant from the optimal harvesting time to the suboptimal harvesting time.

According to a preferred embodiment, the third restrictive information acquired by the third restrictive information acquisition module 23 includes inventory information of corresponding nutrients and supply information of corresponding nutrients of suppliers accessing the nutrient supply module 41, and analyzes the third restrictive information on the nutrient supply information of the corresponding plant type according to the inventory information and the supply information.

It should be noted that, according to needs, one or more features of one or more embodiments of the same or different embodiments of the present invention or one or more features of the same or different embodiments of the present invention may be combined to form a technical solution of the present invention.

Example 6

This embodiment is a further improvement on embodiments 1 to 6 and their combinations, and repeated details are not repeated.

This embodiment describes the change of the characteristic curve of the illumination shown in fig. 5 to 13 in detail. The trend of the characteristic curves of the preferred first lighting phase of the invention is shown in fig. 5 to 7. The horizontal axis in the figure represents time in ms. The vertical axis represents intensity or relative intensity, in unlimited units, as represented by the international common designation a.u. The light emitting period of the present embodiment is preferably 20ms, the first light emitting period is 0-5 ms, the second light emitting period is 5-15 ms, and the third light emitting period is 15-20 ms.

The luminous intensity in the first emission period is constant according to the emission curves N1-N6 shown in fig. 5 and 6. As shown in the N7 emission curve of fig. 4, the emission intensity in the first emission stage repeatedly changes in a sharp rise and a sharp fall, but the range of change of the entire curve is not changed. As shown in the emission curve N8 in fig. 7, the emission intensity in the first emission phase has a repeated change of a slow rise and a slow fall, but the overall curve range does not change. As shown in the emission curve No. N9 in fig. 7, the emission intensity in the first emission period has a change of a step-up and a step-down. As shown in the emission curve No. N10 in fig. 7, the emission intensity in the first emission period has a variation of a smooth rise and a smooth fall. As shown in the emission curve No. N11 in fig. 7, the emission intensity in the first emission period has a tendency to decrease in a straight line. As shown in the emission curve No. N12 in fig. 7, the emission intensity in the first emission period has a change in which the emission intensity first steps down and then steps up. As shown in the emission curve N13 in fig. 7, the emission intensity in the first emission period has a change that is first a smooth decrease and then a smooth increase.

The emission curves shown in fig. 5 and 6, N1-N6, show the variation of the characteristic curves of several second emission phases. As shown in the emission curve N1 in fig. 5, the emission intensity in the second emission period is in a downward trend of the concave curve. As shown in the emission curve No. N2 in fig. 6, the emission intensity in the second emission period is in a downward trend of a convex curve. As shown in the N3 luminous curve of fig. 6, the luminous intensity of the second lighting period is in a descending trend of a concave wave curve. As shown in the N4 luminous curve of fig. 6, the luminous intensity of the second lighting phase is in the descending trend of the convex wave curve. As shown in the emission curve of N5 in fig. 6, the emission intensity in the second emission stage is decreased in a stepwise manner. As shown in the N6 luminous curve of fig. 6, the luminous intensity in the second light-emitting stage is in a downward trend of a linear curve.

Fig. 8 to 13 are graphs showing the spectral changes of the present invention. The horizontal axis represents wavelength in nm. The vertical axis represents intensity or relative intensity, in unlimited units, as represented by the international common designation a.u.

Wherein, fig. 8 and 9 show the spectrum of six stages a to F of the first lighting stage of 0 to 5ms in the lighting period. The sequence of the spectrum changes is A → B → C → D → E → F. Preferably, the order of change of the spectra can be changed as desired. As shown in FIG. 8, the emission spectrum of light at stage A is in the wavelength range of 350-700 nm, and the peaks are at 450nm, 550nm and 650nm, respectively. The light emission spectrum of the illumination in the B stage is 350-700 nm in wavelength, and the wave crests are respectively located at 450nm and 550 nm. The emission spectrum of the illumination in the C stage is 350-750 nm in wavelength, and the wave crests are respectively located at 450nm and 650 nm. As shown in FIG. 9, the emission spectrum of the light in the D stage is 150-800 nm, and the peaks are respectively at 250nm and 650 nm. The light emission spectrum of the illumination in the E stage is 150-900 nm in wavelength, and the wave crests are respectively located at 450nm, 650nm and 850 nm. The light emission spectrum of the illumination in the F stage is 150-900 nm in wavelength, and the wave crests are respectively located at 650nm and 850 nm.

In which, FIGS. 10 and 11 show the spectra of six stages A to F of the second light-emitting stage of 10 to 12ms in the light-emitting period. The sequence of the spectrum changes is A → B → C → D → E → F. Preferably, the order of change of the spectra can be changed as desired. As shown in FIG. 10, the emission spectrum of light at stage A is 350-750 nm, and the peaks are 550nm and 650nm, respectively. The emission spectrum of the illumination in the B stage is 350-700 nm in wavelength, and the peak is 550 nm. The emission spectrum of the illumination in the C stage is 350-750 nm in wavelength, and the peak is 650 nm. As shown in FIG. 11, the emission spectrum of the light in the D stage is between 150 nm and 800nm, and the peak is at 650 nm. In particular, the emission intensity of the characteristic curve in the vicinity of 650nm rapidly increases and decreases. The light emission spectrum of the illumination in the E stage is 150-850 nm in wavelength, and the peak is 650 nm. In particular, the emission intensity of the characteristic curve in the vicinity of 650nm rapidly increases and gradually decreases. The light emission spectrum of the illumination in the F stage is 150-900 nm in wavelength, and the peak is 650 nm. In particular, the emission intensity of the characteristic curve in the vicinity of 650nm rises and falls slowly.

In which, fig. 12 and 13 show the spectra of six stages a to F of the third light-emitting stage of 12 to 15ms in the light-emitting period. The sequence of the spectrum changes is A → B → C → D → E → F. Preferably, the order of change of the spectra can be changed as desired. As shown in FIG. 12, the emission spectrum of light at A stage is in the wavelength range of 350 to 750nm, the peak is at 550nm, and the emission intensity near 550nm gradually increases with the wavelength, rapidly increases near the peak, and gradually decreases after reaching the peak. The emission spectrum of light irradiation in the B stage is 350-700 nm in wavelength, the peak is located at 550nm, the emission intensity near 550nm is gradually increased along with the wavelength, and is gradually decreased after the peak is reached. The emission spectrum of the illumination in the C stage is 350-750 nm in wavelength, the peak is located at 650nm, and the emission intensity near 650nm gradually rises along with the wavelength and rapidly falls after reaching the peak.

As shown in FIG. 13, the emission spectrum of the light in the D stage is between 150 to 850nm in wavelength, the peak is at 650nm, and the emission intensity near 650nm gradually increases with the wavelength and gradually decreases after reaching the peak. The emission spectrum of the illumination in the E stage is 150-850 nm in wavelength, the wave crests are respectively located at 650nm, the emission intensity near 650nm is gradually increased along with the wavelength, rapidly increased near the peak value and slowly decreased after reaching the peak value. The emission spectrum of light irradiation in the F stage is 150-900 nm in wavelength, the peak is located at 650nm, the emission intensity near 650nm is gradually increased along with the wavelength, rapidly increased near the peak and slowly decreased after reaching the peak. Preferably, the emission intensity of the peak in the E stage is relatively low in the D → F stage.

The above characteristic curves are only exemplary, and the present invention may also include other variation characteristic curves, which are numerous and cannot be shown one by one.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A plant factory, comprising:

a lighting driving assembly (11) for providing variable lighting conditions to the plant factory; and

the control module (31) is used for controlling the illumination driving assembly (11) to provide controllable illumination for influencing the growth of the corresponding type of plants in different areas according to the types of the plants planted in the planting areas (611) in the plant factory;

it is characterized in that the preparation method is characterized in that,

the control module (31) selects a growth configuration scheme according to the information from the at least two restrictive information acquisition modules in a manner corresponding to the plant type, and controls the illumination driving assembly (11) and/or the environmental condition and nutrient supply module (41) to make corresponding adjustments so that the plants of the corresponding type in the plant factory grow in a predetermined manner according with the corresponding growth configuration scheme, so that the plants of the corresponding type achieve the growth target manually or automatically set for the plant factory;

the information of the restrictive information acquisition module is the basis information of the growth speed of the plants of the corresponding types, and the growth configuration scheme is selected according to the basis information in a mode corresponding to the plant types;

the plant factory comprises:

a first restrictive information acquisition module (21) which acquires first restrictive information related to time of plants of the corresponding type from a third party forecasting authority;

a second restrictive information acquisition module (22) for acquiring second restrictive information relating to growth of the plants of the respective type by analyzing a predetermined relationship, phase and gain between the input light illuminating the plants and the output light emitted by the illuminated plants; and

a third restrictive information acquisition module (23) that acquires third restrictive information on environmental conditions and nutrient supply information of a planting area (611) of the corresponding type of plant from an environmental conditions and nutrient supply module (41);

wherein the control module (31) controls the illumination driving assembly (11) to adjust the illumination scheme of the corresponding planting area (611) in the plant factory and controls the environmental condition and nutrient supply module (41) to adjust the environmental condition and nutrient supply scheme of the corresponding planting area (611) in the plant factory according to the acquired first and second restrictive information, and stores the growth conditions of the corresponding type of plant in the plant factory and the first, second and/or third restrictive information in a time-dependent manner, thereby obtaining a growth configuration scheme in which each plant type is related to the first, second and/or third restrictive information;

the control module (31) is connected to the first restrictive information acquisition module (21), the second restrictive information acquisition module (22) and the third restrictive information acquisition module (23).

2. The plant factory according to claim 1, wherein, upon a change of the first restriction information, the control module (31) provides at least two growth profiles in a growth rate ranking manner in relation to the respective type of plant, and determines by simulation a difference between an expected growth situation of the current plant and the growth target set to the plant factory in case of applying the at least two growth profiles.

3. The plant factory according to claim 2, wherein the control module (31) orders the differences between the simulation determined expected growth conditions and the set growth goals in a manner related to the third restrictive information, and thereby gives respective priorities to the respective growth configurations related to the differences.

4. The plant factory according to claim 3, wherein after the control module (31) applies the respective growth configuration scheme, the illumination scheme of the illumination driving assembly (11) is adjusted by the control module (31), then third restrictive information is collected by the control module (31) from a third restrictive information acquisition module (23) and the environmental condition and nutrient supply module (41) is controlled to adjust the environmental condition and nutrient supply scheme of the respective planting area (611) in the plant factory according to the adjusted illumination scheme and the collected third restrictive information, and whether to adjust the growth speed of the respective type of plant a second time is decided according to the analysis of the first restrictive information and the second restrictive information;

adjusting the illumination scheme of the corresponding planting area (611) when the growth speed of the corresponding type of plant needs to be adjusted twice;

and acquiring first limiting information according to a first preset frequency when the growth speed of the corresponding type of plant does not need to be adjusted for the second time.

5. The plant factory according to claim 4, wherein the third restrictive information obtained by the third restrictive information obtaining module (23) comprises environmental conditions and nutrient supply conditions;

wherein the environmental conditions comprise at least two sets of environmental parameters including at least one of temperature, humidity, oxygen content and carbon dioxide content, in order of degree of growth inhibition and/or degree of growth promotion, associated with the respective type of plant,

the nutrient supply conditions include at least two sets of nutrient supply parameters including at least one of ion concentration in the nutrient solution, replacement frequency of the nutrient solution, and circulation period of the nutrient solution, in order of degree of growth inhibition and/or degree of growth promotion in relation to the respective type of plant.

6. The plant factory according to any of the claims 1 to 5, wherein said lighting driving assembly (11) is connected to a lighting element network (12), said lighting element network (12) comprising lighting elements (121) arranged above each of said cultivation areas (611), said lighting driving assembly (11) being arranged in such a way that each lighting element (121) can be independently powered, a respective lighting element (121) of said lighting element network (12) being responsive to pulsed current regulated by the lighting driving assembly (11) to generate a controllable lighting environment for plant growth of the respective cultivation area (611),

wherein the illumination driving assembly (11) is capable of outputting an adjusted pulse current and dividing one pulse period of the pulse current into at least two controllable stages, wherein adjustment of at least one parameter of a luminous intensity, a luminous duration, a luminous curve and a luminous spectrum of a first lighting stage corresponding to the first stage of a corresponding illumination element (121) in the illumination element network (12) can be achieved by adjusting the first stage of the pulse current, adjustment of at least one parameter of a luminous intensity, a luminous duration, a luminous curve and a luminous spectrum of a second lighting stage corresponding to the second stage of the corresponding illumination element (121) can be achieved by adjusting the second stage of the pulse current, and a third stage can be obtained by adjusting the first and second controllable stages, a luminous intensity of a third lighting phase of the respective lighting element (121) corresponding to the third phase is close to or equal to zero candela.

7. The plant factory according to any of the claims 1 to 5, wherein said second limiting information analysis module comprises:

at least one light sensor (221) for detecting output light from the illuminated plant;

-an offset light intensity determination means (222) for determining an offset light intensity around the plant, the offset light intensity comprising artificial light and any ambient light;

an analysis unit (223), the analysis unit (223) being configured to:

receiving detection information on the output light from the illuminated plant from the at least one light sensor (221), indirectly controlling, by a control module (31), the illumination driving assembly (11) to cause the network of illumination elements (12) to emit the light intensity modulation component when the determination of the second restrictive information is required, determining a phase and a gain between the input light of the illuminated plant and the output light emitted by the illuminated plant, and determining a growth state of the illuminated plant based on a predetermined relationship between the input light of the illuminated plant and the output light emitted by the illuminated plant and between the phase and the gain;

wherein the light intensity modulation component forms input light for illuminating a plant together with the offset light intensity, the output light emitted by the illuminated plant is fluorescence, the offset light intensity is not zero,

the predetermined relationship is a transfer function comprising a set of transfer function parameters determined by:

illuminating the plant with input light having light intensity modulation components at a plurality of modulation frequencies;

detecting output light emitted from the illuminated plant;

the set of transfer function parameters is determined using a system identification method.

8. Plant factory according to any of the claims 1 to 5, wherein said plant factory is capable of being placed inside a container (51).

9. Plant factory according to any of the claims 1 to 5, characterized in that the interior of the plant factory is provided with at least one planting platform (61) comprising at least two planting areas (611), wherein the at least two planting areas (611) are arranged at a vertical spacing in such a way that plants of the respective type can be planted.