WO2011095137A1 - Led light source control system for growth of configuration plants - Google Patents

Abstract

An LED light source control system for growth of configuration plants is disclosed, the system includes a control bottom plate, a plurality of control basal plates and a plurality of LED light plates, wherein the LED light plate is provided with an LED light; and the control bottom plate comprises a micro processor and a plurality of power sockets, the micro processor is connected with a computer by a serial port connecting wire, a parameter setting module is arranged in the computer, and the control basal plates are arranged on the power sockets. The system has the advantages of effectively improving growth amount and effective ingredients of plants growth, solving the problems of high energy consumption, long cycle and the like existing in the propagation of the orchidaceous plants and greatly shortening the breeding cycle of seedlings.

Description

Configurable plant growth LED light source control system Technical field

 The present invention relates to a light source control system, and more particularly to an LED light source control system for configurable plant growth.

Background technique

The photosynthesis of plants is the foundation of all life on earth. Photosynthesis requires light, but the effects of light on plants, in addition to providing photosynthesis, include the regulation of the spectrum and photoperiod.

The light required for the growth and development of plants often depends on sunlight, but the artificial production and tissue culture of vegetables, flowers, medicinal plants and other economic crops need to be supplemented with artificial light. Especially considering the late autumn, winter, spring and other seasons, the lighting time is relatively short, the greenhouse is seriously lacking light, the crops can not grow normally, such as even cloudy, foggy, rainy and snowy days, the impact of crop growth will be more serious. . Therefore, the use of artificial light source to directly fill the crops in the greenhouse is an effective way to promote plant growth, and the theoretical basis for efficient and energy-saving plant light supplementation is mainly the theory of selective absorption of light by plants. In recent years, efforts have been made to simulate the absorption spectrum of plants in order to develop a light source that maximizes its emission spectrum to the absorption spectrum of the plant to produce resonance absorption, which promotes efficient photosynthesis.

At present, the artificial light sources mainly used in domestic plant tissue culture are incandescent lamps, fluorescent lamps, sodium lamps, high-pressure mercury lamps, etc., but the emission spectra of these artificial light sources do not satisfactorily meet the selective requirements of plant growth for light, and the fill light efficiency is low. The life and luminous efficiency of the lamp are not ideal. The heat generated by the lamp needs to be removed by additional power consumption, so that the overall power consumption cost is high. Preliminary studies using LED light sources in foreign countries and Taiwan have confirmed that the use of LED light sources as artificial light sources in greenhouses can effectively increase the growth and quality of plants. Compared with traditional artificial light sources, LEDs have adjustable light intensity, low spectral, low cooling load, high electro-optical conversion efficiency, small size, long life, use of DC power, and can be set to specific wavelengths and fixed wavelengths. Gas, good environmental performance, is a very suitable artificial light source system for plant tissue culture.

In the prior art, there is no direct application to plant growth, especially the light source control system of LED lamps for orchid tissue culture.

Technical solution

The invention aims at the high energy consumption, high cost and long incubation period of the conventional artificial light source in the existing plant growth process, and provides an LED light source control system for configuring plant growth, thereby effectively improving the growth of the plant growth. The quantity and the active ingredient are used to solve the problems of high energy consumption and long cycle occurring in the propagation of orchids, and the seedling cultivation cycle is greatly shortened.

To this end, the present invention adopts the following technical solution: a configuration plant growth LED light source control system, which is characterized in that it comprises a control base plate, a plurality of control substrates and a plurality of LED light panels, and the LED light panel is mounted thereon. The LED lamp has a microprocessor and a plurality of power sockets. The microprocessor is connected to a computer through a serial port cable, and a parameter setting module is installed in the computer. The control board is mounted on the power socket, and the LED board is connected to the driving circuit of the control board through the power control line, and the number of the control board is configured according to the number of LED boards and the type of the LED type. The microprocessor is used to complete the data communication between the execution of the parameter setting module and the computer, and the intelligent control of the lamp in the LED light board can be realized by the microprocessor and the parameter setting module, and the light intensity and photoperiod control of the pure light board can be realized. The light intensity, light ratio and photoperiod control of the mixed light panel can also be realized.

As a further improvement and supplement to the above technical solutions, the present invention adopts the following technical measures:

The microprocessor comprises a micro processing unit and a clock unit (RTC) and a serial communication interface unit (UART) connected to the micro processing unit (MCU), and mainly performs data communication between the execution of the parameter setting module and the computer. It is used to communicate with a computer to receive and transmit related data, and is used for setting time and period.

The LED light board is composed of a pure light LED light board or/and a red and blue mixed light LED light board, and one pure light LED light board is controlled by two control substrates, and one red and blue mixed light is controlled by five control boards. LED light board, pure light LED light board is equipped with pure light LED light, red and blue mixed light LED light board is equipped with red light and blue light LED light. The use of red and blue high-brightness light-emitting diodes (LEDs) enables the creation of artificial light sources that adjust the amount of light, spectrum, light frequency and duty ratio, providing continuous flicker-free or high-frequency flickering as needed.

The power socket of the control backplane supplies 220V AC power to the control substrate, and the control substrate converts the 220V AC power into a 12V, 1A low voltage DC power source, and then supplies power to the LED lights in the LED light board through the output end thereof.

For different plant needs at different growth stages for different light quality, set different growth curve adjustment parameters, store the parameters in the computer's internal memory E ² PROM, red and blue light ratio according to the growth curve adjustment parameters through the parameter setting module auto-adjust.

Beneficial effect

The invention has the following beneficial effects: the invention has better performance characteristics than the traditional artificial light source in terms of luminous efficiency, light utilization rate and light controllability; effectively improving the growth amount and active ingredients of the plant growth, and solving The problems of high energy consumption and long period of time in the breeding of orchids have greatly shortened the seedling cultivation cycle.

DRAWINGS

The invention will be further described below in conjunction with the drawings and specific embodiments.

Figure 1 is a schematic illustration of the principles of the present invention.

2 is a schematic diagram of the principle of the control board of the present invention.

3 is a circuit schematic diagram of a control substrate of the present invention.

4 is a circuit schematic diagram of an MCU master chip of the present invention.

Figure 5 is a circuit schematic of the UART of the present invention.

Figure 6 is a circuit schematic of the RTC of the present invention.

Embodiments of the invention

As shown in the configurable plant growth LED light source control system, the control board consists of two parts: one is the microprocessor, including the MCU (micro processing unit), the RTC (clock unit) connected to the MCU, and the UART (serial communication) Interface unit), mainly completes the data communication between the execution of the parameter setting module and the computer, is used for communication with the computer to receive and send relevant data, time and period setting, etc.; second, the power socket sharing the AC power, each power supply A control board is mounted on the socket. The microprocessor is connected to the computer through a serial connection cable. The computer is equipped with a parameter setting module. The LED light board is connected to the driving circuit of the control substrate through the power control line, and the number of the control board is configured according to the number of LED boards and the type of the LED lamp. Configuration. The LED light board is composed of pure light LED light board or / and red and blue mixed light LED light board. One pure light LED light board is controlled by two control boards, and one red and blue mixed light LED light board is controlled by five control boards. . For the different light quality requirements of a certain plant at different growth stages, different growth curve adjustment parameters are set, and the parameters are stored in the E ² PROM inside the computer. The red and blue light ratios are automatically adjusted according to the growth curve through the parameter setting module.

The power socket of the control backplane supplies 220V AC power to the control substrate, and the control substrate 2 converts the 220V AC power into a 12V, 1A low-voltage DC power supply, and then supplies the LED light on the LED light board 3 through the 12V, 1A low-voltage electric output terminal. Normal working voltage.

As shown in Figure 4, the MCU (micro processing unit) is the main control chip (ie, the single-chip microcomputer) of the MEGA8L of the AVR series. The MOS tube is driven by the 18-channel I/O line to drive the LED light board, and the MEGA8L is passed to the MCU. The chip can be programmed to realize the high and low level of the I/O port to control the switch of the low voltage power supply, and can adjust the light ratio of the pure light plate and the light mixing plate, or adjust the duty ratio through the PWM output to realize the adjustment of the light intensity of the light plate. Only up to 9 sets of pure light boards or 3 sets of light mixing boards can be controlled in the number of I/O ports.

As shown in Figure 5, the serial communication interface unit communicates with the computer through the MAX232 chip and the standard serial interface.

As shown in Figure 6, the RTC (clock unit) and optical cycle settings are done by the RTC clock chip PCF8563 and related components. This circuit is also equipped with a backup power supply, in order to avoid time loss problems when power is off.

As shown in the circuit schematic diagram of the control substrate shown in FIG. 3, the main function of the control substrate is to receive a single-chip microcomputer control, and output a constant current and constant voltage LED lamp board driving power source. The working principle of the control substrate is as follows: the driving circuit is composed of MOSFET, diode, etc., pulse width modulation (PWM) control, when the startup power supply is connected, the starting current is supplied to the switching transistor Q3 by R4, so that Q3 starts to conduct, and the circuit starts to work. , after the output AC The 12V voltage is rectified and filtered by Schottky diode SR560 and C1 electrolytic capacitor to output DC 12V constant current constant voltage power supply. When the I/O control port of the MCU controls the transistor Q2 to be turned on, the switch tube Q1 Also turned on, diode D4 By the end, the input rectified voltage is charged to C through Q1 and L, and this current increases the energy storage in the inductor L. When the I/O control port of the MCU controls the transistor Q2 to be turned off, the switch Q1 is also turned off, and the inductor L induces a left negative right positive voltage, and the energy stored in the inductor L is released through the load LED lamp plate and the freewheeling diode Q1, thereby Maintain output DC 12V The LED panel voltage does not change.

LED light board includes two kinds: one is a solid color LED light board, the LED color can be optional white light, red light, blue light, green light, yellow light and other solid color light; the other is mixed light LED light board, mainly by red Light and blue light are proportioned according to actual needs. On the LED light board, different wavelengths and different numbers of LED lights can be combined and formed to form a light source, having a corresponding optical density and a composite light wavelength, and the LED light board light is set according to actual needs.

Claims (5)

1. A configurable plant growth LED light source control system is characterized in that it comprises a control substrate, a plurality of control substrates and a plurality of LED light panels, the LED light panel is provided with LED lights, and the control backplane comprises a microprocessor and a plurality of power sources The socket and the microprocessor are connected to a computer through a serial port cable, and a parameter setting module is installed in the computer. The control board is mounted on the power socket, and the LED light board is connected to the driving circuit of the control board through the power control line, and the number of the control board is controlled. It is configured according to the number of LED panels and the type of LED lamp configuration.
2. The configurable plant growth LED light source control system of claim 1 wherein said microprocessor comprises a microprocessor unit and a clock unit and a serial communication interface unit coupled to said microprocessor unit.
3. The configurable plant growth LED light source control system according to claim 1 or 2, wherein the LED light panel is composed of a pure light LED light board or/and a red and blue mixed light LED light board, controlled by two The substrate controls one pure light LED light board, and one red and blue mixed light LED light board is controlled by five control substrates.
4. The configurable plant growth LED light source control system according to claim 3, wherein the power socket of the control backplane supplies 220V AC power to the control substrate, and the control substrate converts 220V AC power into 12V, 1A low voltage DC power, and then passes The output supplies power to the LED panel.
5. The configurable plant growth LED light source control system according to claim 3, characterized in that different growth curve adjustment parameters are set according to the requirements of the plants for different light qualities at different growth stages, and the parameters are stored in the computer inside the E ² PROM, the red and blue ratios are automatically adjusted by the parameter setting module according to the growth curve.

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