CN211853552U

CN211853552U - Multispectral lamp plate device of plant factory

Info

Publication number: CN211853552U
Application number: CN201922432104.0U
Authority: CN
Inventors: 丁晓波; 朱敏; 张宁; 董乐; 王�琦; 廖洪源
Original assignee: Zhuhai (hengqin) Food Safety Research Institute
Current assignee: Zhuhai (hengqin) Food Safety Research Institute
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-11-03
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a photoelectric application technology field discloses a plant factory's multispectral lamp plate device, the lamp plate comprises a lamp plate, controller and power module, power module and controller electric connection, the controller includes the singlechip, photoelectric sensor, drive circuit and controller power supply, the singlechip meets with the communication interface signal of computer through serial communication's mode, the singlechip meets with photoelectric sensor's signal output interface signal through serial communication's mode, the signal output interface of singlechip meets with drive circuit's signal input interface signal, drive circuit's output meets with the lamp plate electrical property through duty ratio regulation mode, and each way drive circuit corresponds the same kind of lamp pearl on a lamp plate, the LED lamp pearl includes red light LED lamp pearl, blue light LED lamp pearl, infrared light LED lamp pearl and ultraviolet ray LED lamp pearl. The utility model discloses aim at solving traditional lamp plate and be difficult to monitor and dynamic adjustment and the problem of spectrum disappearance infrared light and ultraviolet ray to actual conditions.

Description

Multispectral lamp plate device of plant factory

Technical Field

The utility model relates to a lamp plate device specifically is a multispectral lamp plate device of plant factory, belongs to photoelectricity application technical field.

Background

The existing artificial LED light source of plant factory usually adopts LED light sources of two spectra (red light and blue light) to provide illumination for plants, the illumination proportion of different spectra is set by adjusting the number and power of lighting devices, and the illumination intensity is not adjusted during use or adjusted by manually replacing the light bar. Such light sources have some limitations in use, including primarily:

1. the illumination proportion required by different stages of plant growth can only be fixed and matched, the input power is difficult to dynamically adjust, and the maximum energy consumption benefit ratio cannot be reached.

2. Due to aging and light attenuation of the LEDs, the actual illumination intensity can change continuously with the aging of the lighting apparatus in different service periods of the fixed input power, but cannot be automatically adjusted and stabilized, and the change can affect the production efficiency and the plant quality of the plant factory.

3. The light of different spectrums is obvious to the influence difference of different plants and different stages, nevertheless because the fixed proportion of two kinds of spectrums is only to current lamp plate, difficult satisfying the required illumination's of each plant growth stage and different plant species condition, realizes more efficient growth control.

4. Traditional spectrum has only set up two kinds of spectra red, blue, and these two kinds of spectra are the biggest to plant growth influence, but other spectra such as infrared, the spectrum such as ultraviolet is less to plant growth influence, but still is obvious to the quality influence of plant in different stages, and this type of demand is difficult to satisfy to traditional lamp plate, therefore traditional artifical lamp plate of LED has certain limitation in using.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plant factory's multispectral lamp plate device to the traditional lamp plate that provides in solving above-mentioned background is difficult to monitor and dynamic adjustment and the problem of spectrum disappearance infrared light and ultraviolet ray to actual conditions.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a plant factory's multispectral lamp plate device, includes lamp plate, controller and power module, power module and controller electric connection, the controller includes singlechip, photoelectric sensor, drive circuit and controller power supply, the first communication interface of singlechip meets with the communication interface signal of computer through serial communication's mode, the second communication interface of singlechip meets with photoelectric sensor's signal output interface signal through serial communication's mode, the signal output interface of singlechip meets with drive circuit's signal input interface signal, drive circuit's output meets with the lamp plate electrical property through duty cycle regulation mode, and each way drive circuit corresponds the same kind of lamp pearl on a lamp plate, install a plurality of LED lamp pearls on the lamp plate, LED lamp pearl includes red light LED lamp pearl, blue light LED lamp pearl, Infrared light LED lamp pearl and ultraviolet ray LED lamp pearl, and four kinds of lamp pearls are each other spaced apart and equidistant evenly arrange on the lamp plate, four kinds the LED lamp pearl forms ruddiness, blue light, infrared light and ultraviolet ray's maximum input power ratio and is 1: 1: 0.72: 0.16, the LED lamp beads of the same kind are electrically connected in series, and the series circuit of each group of LED lamp beads of the same kind is electrically connected with one corresponding drive circuit.

The utility model discloses in as preferred, each controller corresponds a lamp plate module, each way drive circuit in the controller corresponds each group of the same kind lamp pearl of installation on the lamp plate module respectively, and the duty cycle of all drive circuit's output is independent control, and the scope is 0-100%.

The utility model discloses in as preferred, the input of controller power supply meets with power module's output electrical property, the output of controller power supply meets with singlechip and drive circuit's power input end electrical property respectively.

The utility model discloses in as preferred, the singlechip accepts the illumination intensity value's that the different spectra that computer equipment sent setting command through first communication interface, converts the PWM control output signal who corresponds into through the calculation, and every way output signal is through the opto-coupler circuit after keeping apart, exports the driver all the way respectively to realize controlling output current.

The utility model discloses in as preferred, photoelectric sensor is through reading the illumination intensity value of different spectrums, and the illumination intensity value of acquisition sends the singlechip to through second communication interface, the singlechip converts corresponding spectral energy into according to the wavelength of spectrum and illumination intensity value to contrast with the setting value, the controller again according to with the setting value between contrast deviation, revise the PWM control signal value of output.

The utility model discloses in as preferred, a lamp plate is a lamp plate module, and the lamp plate module is 50cm x 50 cm's aluminium base circuit board, it includes that red light LED lamp pearl 50 is included to the last 144 LED lamp pearls of installing of lamp plate module altogether, blue light LED lamp pearl 50, infrared light LED lamp pearl 36 only and ultraviolet ray LED lamp pearl 8, and the interaxial distance of every LED lamp pearl is 4 cm.

The utility model discloses in as more preferred, the central wavelength spectral range of red light LED lamp pearl is 650-.

The utility model discloses in as more preferred, the total input power of the LED of lamp plate can reach 144W, and minimum input power can be established to 0W, can realize 0-576W/m²The adjustable input power of (2).

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the plant illumination can be set by adopting a predefined illumination curve mode, so that automatic plant illumination adjustment is realized, and the energy consumption optimization of artificial plant cultivation is achieved.

(2) In the cultivation process, the plant illumination can be controlled in real time through a formula of an external computer, and illumination values of different spectrums can be obtained in real time, so that information feedback of a control strategy is realized, and a basis is provided for further finishing optimization and improvement of the control strategy.

(3) Different proportions and different intensities of the multiple different spectrums can be adjusted, so that more flexible illumination combination conditions can be provided, illumination support is provided for different stages of different types of plant cultivation and plant cultivation, and illumination requirements of different types of plants are not required to be met in a mode of manually replacing the lamp panel.

(4) And because the sensor is adopted for carrying out illumination intensity feedback, more accurate spectral energy control can be realized, and uncertainty under a non-feedback mode is avoided.

Drawings

Fig. 1 is a system structure diagram of the present invention.

Fig. 2 is the utility model discloses a lamp plate LED overall arrangement sketch map.

Fig. 3 is a structural diagram of the control panel system of the present invention.

Fig. 4 is the utility model discloses a LED lamp pearl series operation schematic diagram.

Fig. 5 is the utility model discloses a LED lamp pearl drive circuit schematic diagram.

Fig. 6 shows the working principle of the control circuit of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a multispectral lamp panel device of a plant factory comprises a lamp panel, a controller and a power module, wherein the power module is electrically connected with the controller, the controller comprises a single chip microcomputer, a photoelectric sensor, a driving circuit and a controller for power supply, a first communication interface of the single chip microcomputer is connected with a communication interface signal of a computer in a serial communication mode, a second communication interface of the single chip microcomputer is connected with a signal output interface signal of the photoelectric sensor in a serial communication mode, a signal output interface of the single chip microcomputer is connected with a signal input interface signal of the driving circuit, an output end of the driving circuit is electrically connected with the lamp panel in a duty ratio adjusting mode, each driving circuit corresponds to the same lamp bead on one lamp panel, a plurality of LED lamp beads are mounted on the lamp panel, and the LED lamp beads comprise red light LED lamp beads, red light LED lamp beads, Blue light LED lamp pearl, infrared light LED lamp pearl and ultraviolet ray LED lamp pearl, and four kinds of lamp pearls are each other spaced apart and equidistant evenly arrange on the lamp plate, four kinds of LED lamp pearls form ruddiness, blue light, infrared light and ultraviolet ray's maximum input power ratio and be 1: 1: 0.72: 0.16, the LED lamp beads of the same kind are electrically connected in series, and the series circuit of each group of LED lamp beads of the same kind is electrically connected with one corresponding driving circuit.

Referring to fig. 1, a multispectral lamp panel device for a plant factory is composed of three parts: first, the lamp plate that LED lamp pearl of a plurality of groups different spectra is constituteed (sign 1 in the picture). The second is a controller (marked 2 in the figure) composed of a singlechip, a photoelectric sensor and a driving circuit. (ii) a And thirdly, a power supply module (mark 3 in the figure) for supplying power to the lamp panel and the system.

Referring to fig. 2, the lamp panel size is 50cm, and aluminium base circuit board (2 _5 in the figure) is as the bottom plate of fixing and installation, and 144 installation lamp pearls are total, and lamp pearl centre-to-centre spacing is 4cm, and the lamp pearl includes four kinds of different spectra: the LED lamp beads comprise 50 red light LED lamp beads with the central wavelength of 650 plus 665nm (marked by 2_1 circles in the figure), 50 blue light LED lamp beads with the central wavelength spectrum of 435 plus 455nm (marked by 2_2 squares in the figure), 36 infrared light LED lamp beads with the central wavelength of 730 plus 740nm (marked by 2_3 triangles in the figure), and 8 ultraviolet light LED lamp beads with the central wavelength of 365 plus 370nm (marked by 2_4 stars in the figure). By adjusting the input power of the LED lamp beads with the four spectrums, the illumination conditions with various proportions can be obtained. The total input power of the LEDs of the lamp panel can reach 144W, the minimum input power can be set to 0W, and 0-576W/m can be realized²The adjustable input power of (2). In order to ensure the uniformity of illumination, the LED lamp beads of each spectrum use an aluminum-based circuit board as a range, are distributed and installed in an evenly distributed mode as far as possible, and meanwhile, the LED lamp beads of different spectrums are uniformly distributed at intervals as far as possible. The aluminum-based circuit board (reference number 2_5 in the figure) for fixing and installing the lamp panel needs to be provided with a heat sink properly when being fixed so as to ensure a sufficient heat dissipation area.

Referring to fig. 3, the controller includes a single chip microcomputer (reference numeral 3_1 in the figure), a driving circuit (reference numeral 3_2 in the figure), a photosensor (reference numeral 3_3 in the figure), and a controller power supply (reference numeral 3_4 in the figure), wherein the single chip microcomputer (reference numeral 3_1 in the figure) receives a command from other equipment such as a PC or a control device through serial communication 1, and adjusts a control signal of the driving circuit (reference numeral 3_2 in the figure) according to the command requirement to change an output power supply of the driving circuit (reference numeral 3_2 in the figure) so as to adjust power supplies of lamp beads with different spectra, thereby achieving the purpose of controlling different spectral proportions and intensities of the artificial light source, duty ratios of outputs of all the driving circuits (reference numeral 3_2 in the figure) are independently controlled, and ranges are 0-100%. The singlechip (mark 3_1 in the figure) is communicated with the photoelectric sensor (mark 3_3 in the figure) through serial communication 2, and the illumination values in different output states are read. The controller supplies power (the mark 3_4 in the figure) to provide power required by work for the singlechip (the mark 3_1 in the figure), the photoelectric sensor (the mark 3_3 in the figure) and the driving circuit (the mark 3_2 in the figure).

The utility model discloses a theory of operation and embodiment:

1. the controller (reference numeral 2 in fig. 1) receives a control command sent by a PC or other equipment through serial communication 1 (reference numeral 2_1_1 in fig. 1), obtains set illumination intensity values of different spectrums by analyzing the command, and controls and generates a corresponding PWM control signal for each spectrum value, and the control signal controls the driving circuit to output a corresponding driving current to light the LED lamp beads of the corresponding spectrum (the principle of the driving circuit is shown in fig. 5). There are four control signals (TIM 3_ CH1 through TIM3_ CH4 as identified in FIG. 6), each corresponding to a driver circuit control for one spectrum. Through the duty ratio of the PWM control signal, the output average current of the corresponding driving circuit can be adjusted, and therefore the brightness of the LEDO lamp beads with different spectrums can be controlled.

2. A single chip microcomputer (the mark U1A IN fig. 6, the model is stm32f103rct 6) is a system control core, and the single chip microcomputer can receive illumination intensity value setting commands of different spectra sent by other devices through a serial communication port (the mark U2 IN fig. 6, the mark max3485 chip), and converts the illumination intensity value setting commands into corresponding PWM control output signals (the mark TIM3_ CH1, the TIM3_ CH2, the TIM3_ CH3, and the TIM3_ CH4 IN fig. 6) through certain calculation, and each output signal is isolated by an optical coupler circuit (the mark OP1 IN fig. 6) and then respectively output to a driver (the mark PWM _ IN fig. 5 is IC1-IC4, the model is MH 9416), so as to control output currents (the mark RED1 +/-, BLUE +/-, FRED, UV +/-respectively represent RED, BLUE, infrared, ultraviolet, and four-way output signals respectively control a four-way driver circuit, and correspondingly control lamp beads +/-, BLUE, LED lamp beads with four different spectrums of infrared and ultraviolet.

3. The photoelectric sensor (mark 3_3 in fig. 6, model number RS-GZ-N01-2, light intensity reading range 0-20 ten thousand Lux) reads the illumination intensity values of different spectrums, the obtained illumination intensity values are transmitted to the controller (mark 3_1 in fig. 3) through the serial communication port 2, and the controller converts the wavelengths and the light intensity values of the spectrums into corresponding spectrum energy and compares the spectrum energy with a set value. The controller corrects the output PWM control signal value according to the comparison deviation between the PWM control signal value and the set value. To meet the setting requirements of the user.

4. The power module (mark 1_4 in fig. 1) provides necessary power support for a lamp panel (mark 1_1 in fig. 1) and a controller (mark 1_2 in fig. 1) in the system, and the scheme adopts a scheme of converting 36V voltage from 350W alternating current to direct current power.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The multispectral lamp plate device of a plant factory is characterized in that: the LED lamp comprises a lamp panel, a controller and a power module, wherein the power module is electrically connected with the controller, the controller comprises a single chip microcomputer, a photoelectric sensor, a driving circuit and a controller for supplying power, a first communication interface of the single chip microcomputer is connected with a communication interface signal of a computer in a serial communication mode, a second communication interface of the single chip microcomputer is connected with a signal output interface signal of the photoelectric sensor in a serial communication mode, a signal output interface of the single chip microcomputer is connected with a signal input interface signal of the driving circuit, an output end of the driving circuit is electrically connected with the lamp panel in a duty ratio adjusting mode, each driving circuit corresponds to the same lamp bead on one lamp panel, a plurality of LED lamp beads are arranged on the lamp panel, and the LED lamp beads comprise red light LED lamp beads, blue light LED lamp beads, infrared light LED lamp beads and ultraviolet light LED lamp beads, and four kinds of lamp pearls separate each other and equidistant evenly arrange on the lamp plate, four kinds the LED lamp pearl forms ruddiness, blue light, infrared light and ultraviolet light's maximum input power ratio and is 1: 1: 0.72: 0.16, the LED lamp beads of the same kind are electrically connected in series, and the series circuit of each group of LED lamp beads of the same kind is electrically connected with one corresponding drive circuit.

2. The multispectral light panel apparatus of a plant factory as claimed in claim 1, wherein: each controller corresponds to one lamp panel module, each driving circuit in the controller corresponds to each group of same lamp beads installed on the lamp panel module, the duty ratio of the output of all the driving circuits is independently controlled, and the range of the duty ratio is 0-100%.

3. The multispectral light panel apparatus of a plant factory as claimed in claim 1, wherein: the input end of the controller for supplying power is electrically connected with the output end of the power module, and the output end of the controller for supplying power is electrically connected with the power input ends of the single chip microcomputer and the driving circuit respectively.

4. The multispectral light panel apparatus of a plant factory as claimed in claim 1, wherein: the single chip microcomputer receives setting commands of the illumination intensity values of different spectrums, which are sent by the computer equipment, through the first communication interface, the setting commands are converted into corresponding PWM control output signals through calculation, and each path of output signals are isolated through the optical coupling circuit and then respectively output to one path of driver, so that the output current is controlled.

5. The multispectral light panel apparatus of a plant factory as claimed in claim 1, wherein: the photoelectric sensor reads illumination intensity values of different spectrums, the obtained illumination intensity values are transmitted to the single chip microcomputer through the second communication interface, the single chip microcomputer converts corresponding spectrum energy according to the wavelength of the spectrums and the illumination intensity values and compares the spectrum energy with a set value, and the controller corrects an output PWM control signal value according to a comparison deviation between the controller and the set value.

6. The multispectral light panel apparatus of a plant factory as claimed in claim 1, wherein: one lamp plate is a lamp plate module, and the lamp plate module is 50 cm's aluminium base circuit board, it includes that red light LED lamp pearl 50, blue light LED lamp pearl 50, infrared light LED lamp pearl 36 and ultraviolet ray LED lamp pearl 8 are included to install 144 LED lamp pearls on the lamp plate module altogether, and the interaxial distance of every LED lamp pearl is 4 cm.

7. The multispectral light panel apparatus of a plant factory as claimed in claim 6, wherein: the central wavelength spectral range of the red light LED lamp bead is 650-665nm, the central wavelength spectral range of the blue light LED lamp bead is 435-455nm, the central wavelength spectral range of the infrared light LED lamp bead is 730-740nm, and the central wavelength spectral range of the ultraviolet light LED lamp bead is 365-370 nm.

8. The multispectral light panel apparatus of a plant factory as claimed in claim 6, wherein: the total input power of the LEDs of the lamp panel can reach 144W, the minimum input power can be set to 0W, and 0-576W/m can be realized²The adjustable input power of (2).