Device for plant lighting
(57) Abstract:The use of agriculture in the field of crop production in buildings protected ground. The inventive device consists of a source 1 of optical radiation, mounted on the flange 3. In the upper part 5 of the device and the base 8 is made of circular grooves 9, which are placed in the plate 10 forming the inner walls of the filter and the plate 11 forming the outer wall of the filter. Perform lateral longitudinal faces of the plates 11 inclined excludes plants direct light from the source of optical radiation through the gaps between the plates 11. The device can be used for lighting undersized and vysokostebelnyh plants by plants it respectively in the horizontal and vertical planes, while ensuring reliable cooling device due to convective heat transfer. In addition, the device is very convenient in use due to the possibility of its rapid disassembly to remove the dust on all surfaces of plates 10 and 11. 3 Il. The invention relates to the cultivation of plants in artificial lighting conditions and can be used in agriculture the deposits, contains a source of light and heat filter with circulating water. However, the known device does not provide the possibility of effective use for lighting undersized and adult plants, as well as very difficult as a constructive, and in operational terms, as it involves the presence of water cooling.It is also known a device for lighting plants containing a light source placed inside a heat filter, made in the form of a two-layer cylindrical vessel filled with a clear liquid. The specified device provides effective coverage of dwarf and tall plants through a system of optical fibers, however, the cooling device is provided with water, as in the above design. In addition, the system of optical fibers requires constant monitoring of dust, which is extremely inconvenient in operation.An object of the invention is the provision of efficient lighting dwarf and tall plants due to the operation of the device both in vertical and in horizontal position, and cooling it in these polarisierte from the light source, dismantling and elimination of dust on all surfaces.The technical problem is solved due to the fact that the outer and inner walls of the filter is made of plates of rectangular shape, mounted in circular grooves in the upper and lower parts of the device, while the plates constituting the outer wall of the filter made with bevels on the side longitudinal faces and installed with a clearance, the smaller the thickness of the plate multiplied by the cosine of the acute angle formed by the longitudinal and lateral frontal faces of the plate.In Fig. 1 presents the proposed device, a General view of Fig.2 is a view along arrow a in Fig.1.The device consists of a light source 1, fixed by means of the cap 2 on the flange 3 by bolting 4. The upper part 5 of the device is equipped with Windows 6 and by means of the pins 7 is connected with the base 8. In the upper part 5 and the base 8 is made of a circular groove 9, which houses made of silicate glass rectangular plate 10 forming the inner walls of the filter and is made of organic glass plate 11 forming the outer wall of the filter.In Fig.2 shows the plates 10 and 11, and Taka through the gaps from the optical radiation source and providing a cooling filter.In Fig.3 shows the relationship between the gap and the thickness b of the plate 11 and the bevel angle of the longitudinal side face 12.Of the conditions to prevent direct light through the gap and < c x sin where is the angle formed by the front face plate 13 and the bevel 12 of the side longitudinal faces.At the same time with x b x ctg
a< b cos
The device operates as follows.When the lighting is low-growing plants device is installed in a horizontal position. The inner walls of the filter sucked the heat radiation of the light source. However due to the presence of gaps between the plates 10 and 11 provides an efficient cooling device due to the convective air flow. In other words, the heated air from the source 1 of light rises through the gaps in the walls of the filter, and from the bottom through the same gap to the light source 1 enters the cold air.The outer wall of the filter, made of plexiglass, removes thermal radiation of the heated inner wall of the filter, increasing the use efficiency of plants physiologically active radiation. Performing with soskami 12 of the plate 11 forming the outer wall, exclude the possibility of direct trojstva for growing tall plants it can be installed directly between them. In this case, the cooling device will be provided for by the Convention of air through the window 6, located in the upper part 5 of the device.If necessary, remove dust using screw connections 4 the filter is separated from the light source 1, removed plate 11, which provides fast and efficient removal of dust.This ensures effective cooling of the unit when the horizontal and vertical use, and quickly remove any dirt on its surface. DEVICE FOR LIGHTING PLANTS containing the source of optical radiation, placed in heat svecokarelian double-walled cylindrical housing, wherein the outer and inner side walls of the housing consists of a rectangular plate, the ends of which are located in the circular grooves made in the end walls of the casing, while the lateral longitudinal edges of any two adjacent plates of the outer wall of the body is inclined and placed with a gap whose width does not exceed the width of the projection of any of the mentioned faces on a plane passing through the nearest edges of the plates located on facing one of the parties is
FIELD: agricultural engineering.
SUBSTANCE: invention relates to device for control of microclimate in greenhouses. Proposed device is essentially closed space of greenhouse limited from one side by fragment of guard and by heat insulation from all other sides. Heating and measuring elements are installed inside. To protect measuring element from direct sun rays special screen is used. Control unit provides automatic control of device heating element and forms dc signal at its output corresponding to value of heat losses. Operation of device is based on measuring power of heater placed in closed space limited from one side by fragment of guard and at other sides by heat insulation. Heating element maintains is heated volume constant temperature equal to temperature maintained in zone of location of plants by means of automatic control system arranged in separate unit.
EFFECT: simplified design of device.
2 cl, 7 dwg
FIELD: lighting technology.
SUBSTANCE: light-emitting diodes (LED) with different radiation spectrum are used as light sources. Control unit input is connected to pulse frequency adjuster, dark pause adjuster and light pulse amplitude adjuster. Pulse shaper is represented as switch in LED circuit between common negative output and control unit. In second option of lighter design, light source housing is represented as strip along surface with plants and light sources having LED with different radiation spectrum separated along the strip. In third option of lighter design, surface with plants is represented with internal surface of cylindrical pipe. Housing with light sources is represented with several strips equally distanced from each other but with some space along forming surfaces. In fourth option of lighter design, surface with plants is represented with interior space of cylindrical pipe and pulse shaper is in the form of correct prism. Lighting method is a scanning of light flow from aligned LEDs with different radiation spectrum with sequential lighting of surface with plants.
EFFECT: possibility of light flow frequency, radiation spectrum, amplitude and beam form adjustment.
20 cl, 13 dwg
SUBSTANCE: vegetation installation comprises hollow cylindrical chamber and sources of light. Cylindrical chamber, dome roof, floor consist of external detachable transparent wall and inner stationary transparent wall. Sources of light are arranged as spotlight, are mounted between external detachable transparent wall and inner stationary transparent wall and are separated by vertical and horizontal partitions, forming sections shaped as squares. In the left upper corner of square-shaped section there are spotlight sources of blue light, and the right upper corner - spotlight sources of green colour, in the left lower corner - spotlight sources of red colour, in the right lower corner - spotlight sources of white colour.
EFFECT: such arrangement increases efficiency of installation due to uniform and controlled illumination.
SUBSTANCE: greenhouse plant cultivation period is broken down into several time intervals, the required rate of plant development and the adequate daily average temperature are specified. Each time interval is described by the light conditions: day or night. If the system has identified a daytime, then illumination, indoor air humidity, age of plants, photoperiod duration and relative daytime are measured. The average last-night temperature is calculated to derive the optimum producing temperature. If the system has identified a night-time, the average last-day temperature and the night temperature are determined. The estimated optimum producing temperature and night temperatures are corrected with observing the acceptable values.
EFFECT: higher accuracy of the fructification start time planning on the one hand and from the other hand, well developed and strong plants by the moment by photosynthesis intensification.
1 tbl, 2 dwg
SUBSTANCE: invention relates to agricultural machinery, namely to methods and systems of automatic control of temperature and light regime in greenhouses or other structures of a protected ground. The method includes splitting the vegetation period of plants in greenhouse at equal intervals, which duration an order of magnitude smaller than the constant time of the most high-velocity perturbation, calculation for each time interval of optimum temperature and this optimal temperature maintenance constant during the whole period of time. Then the air humidity, air temperature and illumination in the greenhouse are measured to obtain signals from the sensors of air, temperature and light, respectively, the age of plants are measured to obtain a signal from the counter device of plant age, at that these data enter the computer set point adjuster which calculates the average night temperature, then determines and sets the multidimensional optimum daily temperature at the criterion of productivity in the greenhouse.
EFFECT: invention enables to improve significantly the efficiency of light energy use and to increase productivity of plants themselves.
SUBSTANCE: invention relates to agricultural machinery, namely to methods and systems of automatic control of light and temperature and humidity regime in greenhouses or other structures of protected ground. Automatic control system for light and temperature humidity regime in a greenhouse, which is carrying out the claimed method, contains a control circuit of temperature in a greenhouse, including a temperature sensor, whose output is connected with the object of regulation by the comparing element with a set point adjuster, signal multiplier of the current and the calculated temperature disagreement, as well as an actuating mechanism maintaining in the facility the calculated temperature, and the computer unit which calculates the optimum temperature. At that the system also provides additional control loops of lighting and humidity in a greenhouse.
EFFECT: invention enables to ensure the autonomy of temperature, air humidity adjustment inside the greenhouse and of operation of supplementary lighting equipment independently of each other, although at that their mutual influence on plant productivity remains.
SUBSTANCE: invention relates to agricultural machinery, namely to methods and systems for automatic control of temperature and light modes in greenhouses or other structures of a protected ground. Automatic control system for temperature and light regime in greenhouse, implementing the claimed method, contains the control loop of temperature in a greenhouse, including a temperature sensor which output is connected with the object of regulation through the comparing element with the adjuster, a signal multiplier of maladjustment the current and the calculated temperatures, as well as an actuator supporting at the facility the calculated temperature, as well as the computing unit, which calculates an optimum temperature. Also the system contains an additional control loop of lighting.
EFFECT: invention enables to improve accuracy of maintaining temperature and lighting in cultivating area and stability of the system operation, as well as increase efficiency of photosynthesis mechanism in plants due to adjustment of such environmental factors as temperature and irradiance.
SUBSTANCE: system to grow potato plants to produce microtubers comprises chambers with automatically controlled medium to keel and maintain growth of potato plants for the whole life cycle. Each chamber has facility of air temperature control, facility of atmospheric humidity control, illumination facility, sensors of temperature, moisture and light, facility for delivery of nutrients and water to plants. System includes computer facility for continuous automatic monitoring and control of facilities of lighting, air temperature and atmospheric humidity control, and also facilities for delivery of nutrients and water. It is possible to grow both sprouts of tissue culture into mother plants, as well as hefts of mother plants into minitubers, which may be used as source of seeds for further reproduction in the field as stocks of seed potato.
EFFECT: using system with controlled conditions of medium and method providing for optimal conditions of cultivation, results in quick growth and development of potato piece, so that up to six harvests of tubers may be gathered in a calendar year.
18 cl, 8 dwg