Device for determining the position of the louvered screen

 

(57) Abstract:

Usage: in agriculture, in the field of crop production, in buildings protected ground. The inventive device for determining the position of the louvered screen contains the light sensor with photosensitive system and amplifier unit output set based on the hemispherical diffuser and placed underneath microhouse, United group rods with actuators and sensors of their position and related to the software controller, which is connected to the analog-digital Converter. The light sensor includes at least three elements, the optical zone of sensitivity which are located in the spectral range 400 - 700 nm without overlapping each other, and microhouse rods are connected in sections combined in pairs by the number of cells, with different sections of microhouse each pair are located on opposite sides of the vertical plane of symmetry of the lens, and microhouse each pair of sections is made from a material with a given transmittance of the incident optical flux in the range, coinciding with the area of the optical sensitivity of the corresponding photocell. IP is public exposure of plants. 1 C. p. F.-ly, 5 Il.

The invention relates to agriculture, namely the management of microclimate parameters in the greenhouse.

A device for determining the position of the louvered screen containing the light sensor comprising a photosensitive system with amplifier block output that is set on the basis of the hemispherical lens, and placed under the arch of the last microhouse connected through a linkage group to the outputs of the actuators and sensors of their situation that are associated with the program controller, and the output of the amplifier unit is connected with the latter through an analog-to-digital Converter (ed. mon. USSR N 1604248, class A 01 G 9/24, 1988).

A disadvantage of the known device is the lack of its effect on the regulation of the climate in the greenhouse, because it increases natural light.

The purpose of the invention the expansion of the scope of the device by providing a control louvered screens in greenhouses with artificial irradiation plants.

This objective is achieved in that the device for determining the position of the louvered screen containing a light sensor, vkljuchajuwih is assoiates, and placed under the arch of the last microhouse connected through a linkage group to the outputs of the actuators and sensors of their situation that are associated with the program controller, and the output of the amplifier unit is connected with the latter through an analog-to-digital Converter, according to the invention a photosensitive system sensor includes at least three solar cell, optical zone of sensitivity, which are located in the spectral range 400 to 700 nm with no overlap between them, and microhouse through group rods are connected in sections, arranged in pairs, the number of photocells, various sections of microhouse each pair are located on opposite sides of the vertical plane of symmetry of the hemispherical lens and microhouse each pair of sections is made from a material with a specified value of the transmittance of the incident optical flux in the range, coinciding with the area of the optical sensitivity of the corresponding photocell.

In a preferred embodiment of the photosensitive device system sensor contains three solar cell, the area of the optical sensitivity of the first of which RA is tragaluz first couple of sections are made from a material with a given value of the transmittance of the incident optical flux in the spectral range 400 to 500 nm, the second pair of sections in the region of 500-600 nm, and the third pair of sections in the range of 600-700 nm.

In Fig. 1 shows the device in the greenhouse of Fig. 2 diagram of the device of Fig. 3 four-electrode lamp radiation a system for measuring the spectral composition of light, and Fig. 4, the sensor measuring the spectral composition of artificial light; Fig. 5, the sensor measuring the spectral composition of natural light.

Device for determining the position of the louvered screen placed in the greenhouse 1 with glazed roof 2 and is equipped with a multi-tiered narrowshelving hydroponic plants (MUGU) 3. On inclined supports 4 frame installation 3 set the trays 5 to 6 plants. Greenhouse 1 is equipped with a source of optical radiation 7, placed outside the frames installation 3, and sources of optical radiation 8 placed inside the frames. Position 9 is indicated a source of natural light. As sources of optical radiation 7 and 8 can be used mercury discharge lamps.

The device includes a sensor including a photosensitive system with amplifier block output that is set on the basis of the hemispherical scatterer 10 and containing at least the aqueous block connected through analog-to-digital Converter 15 with the software controller 16.

Under the vault of the diffuser 10 also available in the form of filters, microhouse 17, 17' and 17", which are connected to the reed to the position sensors 18, controlling the angle or the length of the linkage group 20 and connected with the actuators 19.

Area of the optical sensitivity of the first photoelectric photosensitive 12 system sensor is located in the spectral range of 400 to 500 nm, the second in the region of 500 to 600 nm, and the third in the range of 600 to 700 nm, while the "total" areas are located in the spectral range 400 to 700 nm without overlapping each other.

Microhouse 17, 17' and 17" by rods 20 are connected in sections, arranged in pairs, the number of solar cells 12, and the different sections of microhouse each pair are located on opposite sides of the vertical plane of symmetry of the hemispherical scatterer 10 and microhouse each pair of sections is made from a material with a specified value of the transmittance of the incident flux in the range, coinciding with the area of the optical sensitivity of the corresponding solar cell 12, i.e., microhouse first couple of sections made of a material with a given transmittance of the incident optical flux in the spectral range of the practical signal, the appropriate level and spectral composition of radiation, serve as terminals 21 of the radiation detector is a photocell 12 (Fig. 5).

The device is equipped with an analog-to-digital Converter (ADC) 15, which serves to convert the analog signal into a digital code, and a programmable controller 16, intended for treatment of indications integral natural light and its spectral components in the range of 400 to 500 nm, 500 to 600 nm, 600 to 700 nm, remember the code of the position sensors 18 louvred screens, memory integral and differential components of natural radiation from the source 9, the transmission via a cable 22 to the communication device 23 from the device, then the controller combined spectral composition 24 for translating the louvers 25, 25', 25", installed under roofing fence greenhouse (Fig. 1, conventionally not shown), by means of the actuator 26 in the position providing the maximum transmittance of natural light and 9 per rotation, a given spectral composition of light, and also command on the change of the electric power gas-discharge periods of the radiation source 7 by means of the sensors 27, 28, 29, group rods 30 and the control Cabinet 31.

Electrode g is wow" light 35 and the plasma "red" light 36.

As the light source 7 is applied to the lamp type DM-6000, DM-3000, DM-750 (patents of the USSR NN 1802885, 1813224, 1816330, all 1993).

Sources of optical radiation 8 operate at a fixed, constant voltage and spectral composition of light.

The sensors 27, 28, 29 measuring the spectral composition of artificial light (Fig. 4) made in the form of voltage transformers and record the spectral composition by indirect measurements of the electron-electron stress. They are arranged in the sensor unit with the power supply 37 and placed in the controller combined spectral composition 24, located, in turn, control Cabinet 31.

The sensor measuring the spectral composition of natural light (Fig. 5) consists of a body 13 and a lid 14, the three color filters 11, transmits light in the spectral ranges of 400 to 500 nm, 500 to 600 nm and 600 to 700 nm, the three cells 12, the optical zone of sensitivity which are located in the spectral ranges corresponding to 400 to 500 nm, 500 to 600 nm and 600 to 700 nm.

A device for determining the louvered screen in a greenhouse works by the following algorithm.

When searching the provisions of microhouse 17, 17' and 17", providing maximum natural is 17' and 17", then the programmable controller 16 sends a signal to the actuator 19, which moves microhouse 17, 17' and 17" from the previous position in accordance with the position sensors 18. Providing maximum illumination by turning the louvers 25, 25' and 25" microhouse 17, 17' and 17" stop. In the light sensor through photovoltaic cells 12 in the programmable controller 16, the light rays are converted into signals corresponding to the position sensors 19.

When determining the spectral components of natural light to create an optimal combined illumination of the object greenhouse programmable controller 16 sends a signal to the solar cells 12 of the sensor, for installation in front of the radiation detector cells and measuring the spectral components of the integral radiation in the ranges of light of 400 to 500 nm, 500 to 600 nm and 600 to 700 nm.

The maximum value of the integral of natural lighting with photocells 12, the spectral components of the natural light in the range 400 to 500 nm, 500 to 600 nm and 600 to 700 nm, corresponding codes of the provisions of the position sensors 18 are written in the programmable controller 16, and then produces a command to transfer Microgaming natural light in the range 400 to 500 nm, 500 to 600 nm and 600 to 700 nm in the regulator combined spectral composition 24. With the programmable controller 16 via the communication unit 23 with the object command on the controller combined spectral composition 24 which produces a command to rotate the louvers 25, 25' and 25" of the greenhouse by means of the actuator 26 with tie rods 30 in a position that provides maximum light transmission for one rotation, because the speed regulation is impossible.

Simultaneously, the controller 24 through sensors 27, 28, 29 artificial component of combined exposure in the range of 400 to 500 nm, 500 to 600 nm and 600 to 700 nm, and control Cabinet 31 gives a command to the lamp 7 in the greenhouse on the change in the spectral composition of the discharge gaps that are responsible for the range of 400 to 500 nm, 500 to 600 nm and 600 to 700 nm and providing normalized combined oblojennosti.

When searching the provisions of microhouse 17, 17' and 17", which provides a running spectral components in the areas of 400 to 500 nm, 500 to 600 nm and 600 to 700 nm in the combined light in the greenhouse, a programmable controller 16 sends a signal to the actuator 18, which, in turn, alternately install microhouse 17, 17' and 17" from the position providing the maximum transmittance CSOs spectral composition of solar cells 12 and the sensors 27, 28, 29 artificial spectral composition, and position sensors 18 microhouse 17, 17' and 17".

The use of the device for determining the position of the Louvre screen in a greenhouse gives you the ability to simultaneously provide maximum natural light in the greenhouse to regulate the spectral composition of natural and artificial components of the joint light that will allow you to increase the yield grown in the greenhouse crops.

1. Device for determining the position of the louvered screen containing the light sensor comprising a photosensitive system with amplifier block output that is set on the basis of the hemispherical lens, and placed under the arch of the last microhouse connected through a linkage group to the outputs of the actuators and sensors of their situation that are associated with the program controller, and the output of the amplifier unit is connected with the latter through an analog-to-digital Converter, characterized in that the photosensitive system sensor includes at least three solar cell, optical zone of sensitivity which are located in the spectral range 400-700 nm without overlap between Soboh is s, various sections of microhouse each pair are located on opposite sides of the vertical plane of symmetry of the hemispherical lens and microhouse each pair of sections is made of a material with the desired values of the transmittance of the incident optical flux in the range, coinciding with the area of the optical sensitivity of the corresponding photocell.

2. The device under item 1, characterized in that the photosensitive system sensor contains three solar cell, the area of the optical sensitivity of the first of which is located in the spectral range of 400 - 500 nm, the second in the region of 500-600 nm, and the third in the range of 600-700 nm, while microhouse first couple of sections are made from a material with a given value of the transmittance of the incident optical flux in the spectral range 400 to 500 nm, the second pair in the region of 500-600 nm, and the third pair of sections in the range 600-700 nm.

 

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