CN114096039A - Spectrum adjusting system and method based on frequency modulation - Google Patents
Spectrum adjusting system and method based on frequency modulation Download PDFInfo
- Publication number
- CN114096039A CN114096039A CN202111435512.7A CN202111435512A CN114096039A CN 114096039 A CN114096039 A CN 114096039A CN 202111435512 A CN202111435512 A CN 202111435512A CN 114096039 A CN114096039 A CN 114096039A
- Authority
- CN
- China
- Prior art keywords
- lamp bead
- circuit
- lamp
- switch tube
- spectrum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001228 spectrum Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000011324 bead Substances 0.000 claims abstract description 171
- 238000001514 detection method Methods 0.000 claims description 22
- 238000005286 illumination Methods 0.000 claims description 11
- 230000003595 spectral effect Effects 0.000 claims description 8
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 230000008635 plant growth Effects 0.000 claims description 4
- 239000011049 pearl Substances 0.000 description 52
- 241000196324 Embryophyta Species 0.000 description 18
- 239000013589 supplement Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 9
- 230000012010 growth Effects 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 5
- 229930000223 plant secondary metabolite Natural products 0.000 description 4
- 241001465382 Physalis alkekengi Species 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005089 fruit drop Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/305—Frequency-control circuits
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a spectrum adjusting system and method based on frequency modulation, wherein the system comprises a power supply module arranged outside a lamp, and a current control module and a light source module which are arranged inside the lamp, wherein the current control module and the light source module are both electrically connected with the power supply module; the light source module comprises a lamp bead circuit consisting of a plurality of lamp beads with at least two different spectrums; the current control module comprises a switch tube and a control circuit, the switch tube is electrically connected with the lamp bead circuit, and the control circuit is set to control the switch tube to be closed or disconnected to control the lamp bead circuit to start or stop emitting light correspondingly in the lamp by detecting the frequency of the PWM voltage output by the power supply module. The working state of the lamp beads with different spectrums is adjusted by detecting the frequency of the PWM voltage output by the power supply module, so that the spectrum adjustment of the light source module is realized.
Description
Technical Field
The invention relates to the technical field of plant illumination, in particular to a spectrum adjusting system and method based on frequency modulation.
Background
The general indoor plants grow worse and worse along with the time, and the main reason is that due to the lack of light irradiation, the growth of the plants can be promoted, the flowering phase of the plants can be prolonged, and the flower quality is improved by irradiating the plants through the LED lamps which are suitable for the spectrum required by the plants. The high-efficiency light source system can be further applied to agricultural production facilities such as greenhouses, greenhouses and the like, on one hand, the defect that the taste of greenhouse vegetables is reduced due to insufficient sunlight can be overcome, on the other hand, the greenhouse vegetables can be brought into the market in advance in winter, and therefore the purpose of out-of-season cultivation is achieved.
For some fruit crops, the light supplement can not only influence the fruit drop rate and the yield of plants, but also greatly improve the color and the quality of fruits. The existing light supplement lamp is single in fixed color, red, white and blue light are basically supplemented, once the lamp is electrified, the brightness of the lamp can only be changed through current, the whole spectrum composition of the lamp cannot be changed, and the requirements that plants need different spectrums in different growth stages and even different weathers to make up the deficiency of natural light and increase the content of plant secondary metabolites cannot be met.
In the existing light supplement lamp system, power is supplied to each light supplement lamp through a direct current bus, when the spectrum of the light supplement lamp is required to be adjustable or the brightness of the light supplement lamp is required to be adjustable, a dimming input line is added in the light supplement lamp, a dimming signal is sent to the light supplement lamp through dimming light, and the brightness or the spectrum of the light supplement lamp is adjusted according to the size of the dimming signal and through a current control circuit in the lamp. In the centralized driving direct current bus system, a plurality of lamps are powered by the same direct current bus, and if each lamp is additionally provided with a specific dimming line to realize adjustable brightness or spectrum, the wiring complexity of the light supplementing system can be increased, a great deal of waste of circuits and components exists, and the overall cost is increased. However, the problem can be solved by dimming or color-adjusting the supplementary lighting lamp in a wireless communication manner, which means that the supplementary lighting lamp needs expensive wireless communication receiving circuit and software in addition to a circuit for controlling current.
Therefore, it is desirable to provide a spectrum adjusting system which is convenient for spectrum adjustment and can simplify the complexity of the lamp circuit and integrate power supply and signal to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides a spectrum adjusting system based on frequency modulation. The problem of use multichannel power, multichannel control system to realize that spectral control leads to a large amount of wastes of circuit and components and parts among the prior art is solved.
The technical effects of the invention are realized as follows:
a spectrum adjusting system based on frequency modulation comprises a power supply module arranged outside a lamp, a current control module and a light source module which are arranged inside the lamp, wherein the current control module and the light source module are both electrically connected with the power supply module,
the power supply module is used for outputting PWM voltage with adjustable frequency and constant voltage amplitude;
the light source module comprises a lamp bead circuit consisting of a plurality of lamp beads with at least two different spectrums; the current control module comprises a switch tube and a control circuit, the switch tube is electrically connected with the lamp bead circuit, and the control circuit is set to control the switch tube to be closed or disconnected to control the lamp bead circuit to start or stop emitting light correspondingly in the lamp by detecting the frequency of the PWM voltage output by the power supply module. Through setting up the current control module including switch tube and control circuit, make can detect the frequency size of the PWM voltage of power supply module's output through control circuit and control the switch tube closure or break off and begin to give out light or stop giving out light with the lamp pearl in the lamp pearl circuit that corresponds in the control lamps and lanterns, thereby can change the operating condition of each lamp pearl circuit in the light source module according to the spectrum demand of difference, thereby realize the spectrum regulation to light source module, realize the illumination environment of optimum vegetation, it needs different spectra to compensate the not enough of natural light to satisfy the plant at different growth stages or even different weather, increase the demand of plant secondary metabolite content, use multichannel power among the prior art, multichannel control system realizes that the spectrum regulation leads to the extravagant problem in a large number of circuit and components and parts.
Further, the power supply module is used for adjusting the PWM voltage duty ratio so as to adjust the luminous brightness of the lamp bead circuit.
Further, the power supply module comprises a power switch tube and a PWM signal generation circuit, and the power supply module is arranged to control and change the on-time and the off-time of the power switch tube to output the PWM voltage when the frequency of the PWM signal in the PWM signal generation circuit changes. Through the arrangement of the power switch tube and the PWM signal generating circuit, when the frequency of the PWM signal in the PWM signal generating circuit changes, the on-time and the off-time of the power switch tube can be correspondingly changed, so that the output voltage of the power supply module is the PWM voltage, and the frequency of the PWM voltage and the on-time and the off-time of the power switch tube are kept consistent.
Further, the lamp pearl circuit includes first lamp pearl circuit and second lamp pearl circuit at least, first lamp pearl circuit is formed by connecting a plurality of lamp pearls of a spectrum, second lamp pearl circuit is formed by connecting a plurality of lamp pearls of another spectrum, the switch tube includes first switch tube and second switch tube at least, first lamp pearl circuit with first lamp pearl unit that first switch tube series connection formed with second lamp pearl circuit with second lamp pearl unit that the second switch tube series connection formed is parallelly connected.
Further, the lamp pearl circuit includes first lamp pearl circuit and second lamp pearl circuit at least, first lamp pearl circuit with second lamp pearl circuit is established ties, first lamp pearl circuit is formed by connecting a plurality of lamp pearls of a spectrum, second lamp pearl circuit is formed by connecting a plurality of lamp pearls of another spectrum, the switch tube includes first switch tube and second switch tube at least, first lamp pearl circuit with first switch tube is parallelly connected, second lamp pearl circuit with the second switch tube is parallelly connected.
Further, the lamp pearl circuit includes first lamp pearl circuit and second lamp pearl circuit at least, first lamp pearl circuit is formed by connecting according to first settlement law by the lamp pearl of different spectra, second lamp pearl circuit is formed by connecting according to the second settlement law by the lamp pearl of different spectra, the switch tube includes first switch tube and second switch tube at least, first lamp pearl circuit with first lamp pearl unit that first switch tube series connection formed with second lamp pearl circuit with second lamp pearl unit that the second switch tube series connection formed is parallelly connected, first settlement law is different from the second settlement law.
Further, the lamp pearl circuit includes first lamp pearl circuit and second lamp pearl circuit at least, first lamp pearl circuit with second lamp pearl circuit is established ties, first lamp pearl circuit is formed by the lamp pearl of different spectra according to first settlement law connection, second lamp pearl circuit is formed by the lamp pearl of different spectra according to the second settlement law connection, the switch tube includes first switch tube and second switch tube at least, first lamp pearl circuit with first switch tube is parallelly connected, second lamp pearl circuit with the second switch tube is parallelly connected, first settlement law is different from the second settlement law.
Further, the control circuit comprises a frequency detection unit and a comparison output unit, and the control circuit is configured to control the switch tube to be turned on or off through the comparison output unit when the frequency detection unit detects the frequency of the PWM voltage output by the power supply module so as to control the corresponding lamp bead circuit in the lamp to start or stop emitting light.
Further, the control circuit comprises a frequency detection unit and an operational amplifier, and the control circuit is configured to adjust the impedance of the switching tube through the operational amplifier when the frequency detection unit detects the frequency of the PWM voltage output by the power supply module, so as to adjust the brightness of the corresponding lamp bead circuit. By arranging the operational amplifier, the amplitude of the voltage signal output by the operational amplifier changes along with the change of the difference between the voltage signal output by the frequency detection unit and the reference signal, so that the voltage signal with the changeable output amplitude can be output, the current of the circuit where the switching tube is located can be adjusted by changing the impedance of the switching tube, and the light and shade adjustment of the lamp bead in the lamp bead circuit can be realized.
In addition, a frequency modulation-based spectrum adjustment method is also provided, and the method is implemented based on the frequency modulation-based spectrum adjustment system, and the method includes:
determining the optimal spectrum proportion required by the plant according to the current growing environment requirement of the plant, wherein the optimal spectrum proportion is the illumination proportion among different spectrums;
detecting the frequency of the PWM voltage output by the power supply module by using a control circuit;
when the frequency of the PWM voltage output by the power supply module is detected, the corresponding lamp bead circuit in the lamp is controlled to start emitting light or stop emitting light through the control circuit to adjust the spectrum to realize the most suitable illumination environment for plant growth by controlling the on-off of the switch tube based on the optimal spectrum proportion through the control circuit.
As described above, the present invention has the following advantageous effects:
1) through setting up the current control module including switch tube and control circuit, make can detect the frequency size of the PWM voltage of power supply module's output through control circuit and control the switch tube closure or break off and begin to give out light or stop giving out light with the lamp pearl in the lamp pearl circuit that corresponds in the control lamps and lanterns, thereby can change the operating condition of each lamp pearl circuit in the light source module according to the spectrum demand of difference, thereby realize the spectrum regulation to light source module, realize the illumination environment of optimum vegetation, it needs different spectra to compensate the not enough of natural light to satisfy the plant at different growth stages or even different weather, increase the demand of plant secondary metabolite content, use multichannel power among the prior art, multichannel control system realizes that the spectrum regulation leads to the extravagant problem in a large number of circuit and components and parts.
2) Through the arrangement of the power switch tube and the PWM signal generating circuit, when the frequency of the PWM signal in the PWM signal generating circuit changes, the on-time and the off-time of the power switch tube can be correspondingly changed, so that the output voltage of the power supply module is the PWM voltage, and the frequency of the PWM voltage and the on-time and the off-time of the power switch tube are kept consistent.
3) By arranging the operational amplifier, the amplitude of the voltage signal output by the operational amplifier changes along with the change of the difference between the voltage signal output by the frequency detection unit and the reference signal, so that the voltage signal with the changeable output amplitude can be output, the current of the circuit where the switching tube is located can be adjusted by changing the impedance of the switching tube, and the light and shade adjustment of the lamp bead in the lamp bead circuit can be realized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art it is also possible to derive other drawings from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a spectrum adjustment system based on frequency modulation according to an embodiment of the present disclosure;
fig. 2 is a schematic circuit diagram of a power supply module provided in an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a first lamp bead unit and a second lamp bead unit in a first implementation manner provided in an embodiment of this specification;
fig. 4 is a schematic structural diagram of a first lamp bead circuit and a second lamp bead circuit in a second implementation manner provided in an embodiment of the present specification;
fig. 5 is a schematic circuit diagram of a frequency detection unit according to an embodiment of the present disclosure;
fig. 6 is a schematic circuit diagram of another frequency detection unit provided in the embodiments of the present disclosure;
fig. 7 is a circuit schematic diagram of a control circuit including a comparator according to an embodiment of the present disclosure;
fig. 8 is a circuit schematic diagram of a control circuit including an operational amplifier according to an embodiment of the present disclosure;
fig. 9 is a circuit schematic diagram of another control circuit including an operational amplifier according to an embodiment of the present disclosure.
Wherein the reference numerals in the figures correspond to:
the lighting fixture comprises a lighting fixture 1, a power supply module 2, a power switch tube 21, a PWM signal generating circuit 22, a current control module 3, a switch tube 31, a first switch tube 311, a second switch tube 312, a control circuit 32, a frequency detection unit 321, a comparison output unit 322, an operational amplifier 323, a light source module 4, a lamp bead circuit 5, a lamp bead 51, a first lamp bead circuit 52, a second lamp bead circuit 53, a first lamp bead unit 6 and a second lamp bead unit 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1:
as shown in fig. 1-7, the present specification provides a spectral modulation system based on frequency modulation, which includes a power supply module 2 disposed outside a lamp 1, and a current control module 3 and a light source module 4 disposed inside the lamp 1, wherein both the current control module 3 and the light source module 4 are electrically connected to the power supply module 2,
the power supply module 2 is used for outputting a PWM voltage with adjustable frequency and constant voltage amplitude;
the light source module 4 comprises a lamp bead circuit 5 consisting of a plurality of lamp beads 51 with at least two different spectrums;
the current control module 3 includes a switch tube 31 and a control circuit 32, the switch tube 31 is electrically connected to the lamp bead circuit 5, and the control circuit 32 is configured to control the switch tube 31 to be turned on or turned off by detecting the frequency of the PWM voltage output by the power supply module 2 to control the corresponding lamp bead circuit 5 in the lamp 1 to start or stop emitting light.
It should be noted that, in the existing light supplement lamp system, the preceding stage outputs a direct current voltage through the AC-DC conversion module, and then supplies power to each light supplement lamp through the direct current bus, when the spectrum of the light supplement lamp is required to be adjustable or the brightness of the light supplement lamp is required to be adjustable, the solution in the prior art is to add a dimming input line in the light supplement lamp, input a dimming signal to the light supplement lamp through the dimming input line, and match a current control circuit in the lamp to realize the adjustment of the brightness or the spectrum of the light supplement lamp according to the magnitude of the dimming signal. In the centralized driving direct current bus system, a plurality of lamps are powered by the same direct current bus, and if a specific dimming line is added to each lamp to achieve adjustable brightness or spectrum, the wiring complexity of the light supplement system is increased. In order to solve the problem, it is also conceivable to adjust the brightness or spectrum of the supplementary lighting fixture by wireless communication, but this means that the supplementary lighting fixture needs expensive wireless communication receiving circuit and software to implement the communication function in addition to the circuit for controlling the current.
Therefore, by providing the current control module 3 including the switch tube 31 and the control circuit 32, so that the control circuit 32 can detect the frequency of the PWM voltage output by the power supply module 2 to control the switching tube 31 to be turned on or off to control the lamp beads 51 in the corresponding lamp bead circuits 5 in the lamp 1 to start or stop lighting, thereby changing the working state of each lamp bead circuit 5 in the light source module 4 according to different spectrum requirements, thereby realize the spectral control to light source module 4, realize the illumination environment of optimum vegetation, satisfy the plant and need different spectra at different growth stages even different weather and compensate the not enough of natural light, increase the demand of plant secondary metabolite content, solved among the prior art and used multichannel power, multichannel control system to realize that spectral control leads to the extravagant problem in a large number of circuits and components and parts.
Preferably, the power supply module 2 is used for adjusting the brightness of the PWM voltage duty ratio to adjust the brightness of the lamp bead circuit 5, so as to adjust the brightness of the lamp beads 51 with different spectrums in the light source module 4.
Preferably, as shown in fig. 2, the power supply module 2 includes a power switch tube 21 and a PWM signal generating circuit 22, and the power supply module 2 is configured to control and change the on-time and the off-time of the power switch tube 21 to output the PWM voltage when the frequency of the PWM signal in the PWM signal generating circuit 22 changes. When the frequency of the PWM signal in the PWM signal generating circuit 22 changes, the on-time and the off-time of the power switch tube 21 change accordingly, so that the output voltage of the power supply module 2 is the PWM voltage, and the frequency changes along with the change of the on-time and the off-time of the power switch tube 21.
The lamp pearl circuit 5 constitutes through the electric connection mode of difference between the lamp pearl 51 in this application, specifically includes following four kinds of implementation modes:
in a first embodiment, as shown in fig. 3, the lamp bead circuit 5 at least includes a first lamp bead circuit 52 and a second lamp bead circuit 53, the first lamp bead circuit 52 is formed by connecting a plurality of lamp beads 51 of one spectrum, the second lamp bead circuit 53 is formed by connecting a plurality of lamp beads 51 of another spectrum, the switch tube 31 at least includes a first switch tube 311 and a second switch tube 312, and a first lamp bead unit 6 formed by connecting the first lamp bead circuit 52 and the first switch tube 311 in series is connected in parallel with a second lamp bead unit 7 formed by connecting the second lamp bead circuit 53 and the second switch tube 312 in series.
Specifically, when the control circuit 32 controls the corresponding switch tube to be turned off, the lamp bead unit where the switch tube 31 is located is in an off state, so that the lamp bead 51 in the lamp bead circuit connected in series with the switch tube 31 stops emitting light; when the control circuit 32 controls the corresponding switch tube 31 to be closed, the lamp bead unit where the switch tube 31 is located is in a conducting state, so that the lamp beads 51 in the lamp bead circuits connected in series with the switch tube 31 start to emit light, and the on and off of the lamp beads 51 with the corresponding spectrum in different lamp bead circuits 5 are realized.
In a second embodiment, as shown in fig. 4, the lamp bead circuit 5 at least includes a first lamp bead circuit 52 and a second lamp bead circuit 53, the first lamp bead circuit 52 and the second lamp bead circuit 53 are connected in series, the first lamp bead circuit 52 is formed by connecting a plurality of lamp beads 51 of one spectrum, the second lamp bead circuit 53 is formed by connecting a plurality of lamp beads 51 of another spectrum, the switch tube 31 at least includes a first switch tube 311 and a second switch tube 312, the first lamp bead circuit 52 is connected in parallel with the first switch tube 311, and the second lamp bead circuit 53 is connected in parallel with the second switch tube 312.
Specifically, when the control circuit 32 controls the corresponding switch tube to be turned off, the lamp bead circuit connected in parallel with the switch tube 31 is in a conducting state, and the lamp bead 51 in the lamp bead circuit starts to emit light; when the control circuit 32 controls the corresponding switch tube to be closed, the lamp bead circuit connected in parallel with the switch tube 31 is in a state of being short-circuited by the switch tube 31, and the lamp beads 51 in the lamp bead circuit stop emitting light, so that the lamp beads 51 with corresponding spectrums in different lamp bead circuits 5 are on and off.
In the third embodiment, the lamp bead circuit 5 at least includes a first lamp bead circuit 52 and a second lamp bead circuit 53, the first lamp bead circuit 52 is formed by connecting lamp beads 51 of different spectrums according to a first set rule, the second lamp bead circuit 53 is formed by connecting lamp beads 51 of different spectrums according to a second set rule, the switch tube 31 at least includes a first switch tube 311 and a second switch tube 312, a first lamp bead unit 6 formed by connecting the first lamp bead circuit 52 and the first switch tube 311 in series is connected in parallel with a second lamp bead unit 7 formed by connecting the second lamp bead circuit 53 and the second switch tube 312 in series, the first set rule is different from the second set rule.
In the fourth embodiment, the lamp bead circuit 5 at least includes a first lamp bead circuit 52 and a second lamp bead circuit 53, the first lamp bead circuit 52 and the second lamp bead circuit 53 are connected in series, the first lamp bead circuit 52 is formed by connecting lamp beads 51 of different spectrums according to a first set rule, the second lamp bead circuit 53 is formed by connecting lamp beads 51 of different spectrums according to a second set rule, the switch tube 31 at least includes a first switch tube 311 and a second switch tube 312, the first lamp bead circuit 52 is connected in parallel with the first switch tube 311, the second lamp bead circuit 53 is connected in parallel with the second switch tube 312, the first set rule is different from the second set rule.
The first setting rule and the second setting rule in the third and fourth embodiments can be set by those skilled in the art according to different growth requirements of plants.
The connection mode between the lamp beads 51 in the first lamp bead circuit 52 or the second lamp bead circuit 53 in the above four embodiments may be a series connection, a parallel connection or a series-parallel connection.
Preferably, the control circuit 32 includes a frequency detection unit 321 and a comparison output unit 322, and the control circuit 32 is configured to control the switch tube 31 to be turned on or off by comparing the output unit 322 when the frequency detection unit 321 detects the frequency of the PWM voltage output by the power supply module 2 so as to control the corresponding lamp bead circuit 5 in the lamp 1 to start or stop emitting light.
Specifically, the frequency detection unit 321 receives the PWM voltage output by the power supply module 2, and outputs a voltage signal Vd whose magnitude changes with the detected change in the frequency of the PWM voltage.
As shown in fig. 5, in a specific embodiment of the frequency detecting unit 321, when the PWM voltages have different frequencies, the impedances of the inductor L and the capacitor C change with the frequency, that is, the voltage Vd distributed to the capacitor C also changes, so that the frequency of the PWM voltage can be represented by the magnitude of Vd.
As shown in fig. 6, in another embodiment of the frequency detecting unit 321, the frequency detecting unit 321 is a circuit composed of a resistor R1, a capacitor C1 and a diode D1, wherein the capacitor C1 is charged only during the time when the PWM voltage is at a high level, that is, the peak voltage of the voltage V1 varies with the frequency variation of the PWM voltage, and the diode D2 and the capacitor C2 form a peak hold circuit, so that the amplitude of the output voltage Vd varies with the frequency variation of the PWM voltage.
Specifically, as shown in fig. 7, the comparison output unit 322 receives the voltage signal Vd output by the frequency detection unit 321, Vd is a voltage value detected by the frequency detection unit 321 with respect to the frequency of the output voltage Vo of the power supply module 2, and an output end of the comparison between the voltage signal Vd and the reference signal Vr is connected to the switching tube 31, so as to control the opening and closing of the switching tube 31. The reference signal Vr determines a frequency threshold, and the frequency threshold is within a frequency variation range of the PWM voltage output by the power supply module 2. The switch tube 31 in fig. 7 is illustrated by Mos tube, and besides, the switch tube 31 may be other types of switch tubes 31, such as IGBT, triode, etc., and the control circuit 32 may increase or decrease components in the control circuit 32 according to the driving characteristics of the switch tube 31.
For example, when the frequency f of the PWM voltage Vo output by the power supply module 2 varies within a range of [ f1, f2] in the first lamp bead circuit 52 formed by connecting the white-spectrum lamp beads 51 and the red-spectrum lamp beads 51 of the light source module 4, it is necessary to design that the white-spectrum lamp beads 51 are on and the red-spectrum lamp beads 51 are off when f is equal to f 1; when f is f2, the white LED lamp and the red LED lamp are both required to be on, where f is the frequency value corresponding to the reference signal Vr. At this time, the first lamp bead circuit 52 does not have the corresponding first switch tube 311, the second switch tube 312 corresponding to the second lamp bead circuit 53 may select the first embodiment or the second embodiment, and the frequency threshold set by the reference signal Vr may be f1 and the default output frequency of the power supply module 2 is f2, or the frequency threshold set by the reference signal Vr may be f2 and the default output frequency of the power supply module 2 is f 1.
The following description is made by taking an example that the frequency threshold set by the reference signal Vr may be f2 and the default output frequency of the power supply module 2 is f1 as an example, when the lamp bead 51 requiring a white spectrum is on and the lamp bead 51 requiring a red spectrum is off, the output frequency of the power supply module 2 does not need to be controlled, so that the default frequency f1 is output; when the lamp beads 51 requiring the red spectrum are also on, the output frequency of the power supply module 2 is controlled to be increased to f2, and then in the control circuit 32, the detection signal Vd reaches the frequency threshold set by the reference signal Vr, so that a signal is output to the second switching tube 312, and the lamp beads 51 requiring the red spectrum in the second lamp bead circuit 53 are controlled to be on by on-off of the second switching tube 312.
The embodiment of the present specification provides a spectrum adjusting method based on frequency modulation, which is implemented based on the spectrum adjusting system based on frequency modulation in embodiment 1, and the method includes:
determining the optimal spectrum proportion required by the plant according to the current growth environment requirement of the plant, wherein the optimal spectrum proportion is the illumination proportion among different spectrums;
detecting the frequency of the PWM voltage output by the power supply module 2 by using the frequency detecting unit 321;
when detecting the frequency of the PWM voltage output by the power supply module 2, the corresponding lamp bead circuit 5 in the lamp 1 is controlled to start or stop lighting by controlling the switching tube 31 to be turned on or off through the comparison output unit 322 based on the optimal spectrum ratio to adjust the spectrum to realize the most suitable lighting environment for plant growth.
Example 2:
as shown in fig. 1 to 6 and fig. 8 to 9, the control circuit 32 includes a frequency detection unit 321 and an operational amplifier 323, and the control circuit 32 is configured to adjust the impedance of the switching tube 31 through the operational amplifier 323 to adjust the light emitting brightness of the corresponding lamp bead circuit 5 when the frequency detection unit 321 detects the frequency of the PWM voltage output by the power supply module 2.
It should be noted that, unlike the comparison output unit 322, the output signal Vs of the operational amplifier 323 is a voltage signal with a variable amplitude, and the amplitude of the voltage signal Vs varies with the difference between the voltage signal Vd output by the frequency detection unit and the reference signal Vr, as shown in fig. 8, and the impedance of the switching tube 31 is adjusted by the amplitude variation of the voltage signal Vs, so as to adjust the current of the circuit where the switching tube 31 is located.
For example, the light source module 4 includes a first lamp bead circuit 52 formed by connecting white-spectrum lamp beads 51 and a second lamp bead circuit 53 formed by connecting red-spectrum lamp beads 51, and when the frequency f of the output voltage Vo output by the power supply module 2 changes within a range of [ f1, f2], it is necessary to design that when f ═ f1, the white-spectrum lamp beads 51 are required to be turned on and the red-spectrum lamp beads 51 are required to be turned off; when f is f2, the white LED lamp and the red LED lamp are both required to be on, where f is the frequency value corresponding to the reference signal Vr. The control circuit 32 includes an operational amplifier 323, when f is close to f1, the amplitude of the output signal Vs of the operational amplifier 323 is maximum, that is, the impedance of the control switch tube 31 is lowest, and when Vo is close to V2, the amplitude of the output signal Vs of the operational amplifier is minimum, that is, the impedance of the control switch tube 31 is highest, so that the current magnitude of the circuit in which the switch tube 31 is located is changed along with the amplitude change of the output voltage Vo of the power supply module 2.
In some other embodiments, when the light source module 4 is the first and third embodiments, and the switching tube 31 selects the circuit of fig. 3 to compatibly adjust the current level, the control circuit 32 may also be the following embodiments, as shown in fig. 9. It should be noted that, unlike the embodiment of fig. 8, the output signal of the operational amplifier does not directly control the impedance of the switching tube 31, but controls the magnitude of the current of the circuit in which the switching tube 31 is located by controlling the magnitude of Vs in fig. 9.
The embodiment of the present specification provides a spectrum adjusting method based on frequency modulation, which is implemented based on the spectrum adjusting system based on frequency modulation in embodiment 2, and the method includes:
determining the optimal spectrum proportion required by the plant according to the current growth environment requirement of the plant, wherein the optimal spectrum proportion is the illumination proportion among different spectrums;
detecting the frequency of the PWM voltage output by the power supply module 2 by using the frequency detecting unit 321;
when the frequency of the PWM voltage output by the power supply module 2 is detected, the brightness of the light bulb 51 in the corresponding light bulb circuit 5 is adjusted by adjusting the impedance of the switching tube 31 through the operational amplifier 323 based on the optimal spectrum proportion, so as to adjust the spectrum to realize the most suitable illumination environment for plant growth.
Although the present invention has been described by way of preferred embodiments, the present invention is not limited to the embodiments described herein, and various changes and modifications may be made without departing from the scope of the present invention.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The embodiments and features of the embodiments described herein above can be combined with each other without conflict.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A spectrum adjusting system based on frequency modulation is characterized by comprising a power supply module (2) arranged outside a lamp (1), and a current control module (3) and a light source module (4) arranged inside the lamp (1), wherein the current control module (3) and the light source module (4) are both electrically connected with the power supply module (2),
the power supply module (2) is used for outputting a PWM voltage with adjustable frequency and constant voltage amplitude;
the light source module (4) comprises a lamp bead circuit (5) formed by a plurality of lamp beads (51) with at least two different spectrums;
the current control module (3) comprises a switch tube (31) and a control circuit (32), the switch tube (31) is electrically connected with the lamp bead circuit (5), and the control circuit (32) is arranged to control the switch tube (31) to be closed or opened by detecting the frequency of the PWM voltage output by the power supply module (2) so as to control the corresponding lamp bead circuit (5) in the lamp (1) to start or stop emitting light.
2. The frequency modulation based spectrum adjustment system according to claim 1, wherein the power supply module (2) is configured to adjust a PWM voltage duty cycle to adjust a brightness of the light emitted by the lamp bead circuit (5).
3. The frequency modulation based spectrum adjustment system according to claim 2, wherein the power supply module (2) comprises a power switch (21) and a PWM signal generation circuit (22), and the power supply module (2) is configured to control to change the on-time and the off-time of the power switch (21) to output the PWM voltage when the frequency of the PWM signal in the PWM signal generation circuit (22) changes.
4. The spectrum adjusting system based on frequency modulation according to claim 1, wherein the lamp bead circuit (5) at least comprises a first lamp bead circuit (52) and a second lamp bead circuit (53), the first lamp bead circuit (52) is formed by connecting a plurality of lamp beads (51) of one spectrum, the second lamp bead circuit (53) is formed by connecting a plurality of lamp beads (51) of another spectrum, the switch tube (31) at least comprises a first switch tube (311) and a second switch tube (312), and a first lamp bead unit (6) formed by connecting the first lamp bead circuit (52) and the first switch tube (311) in series is connected in parallel with a second lamp bead unit (7) formed by connecting the second lamp bead circuit (53) and the second switch tube (312) in series.
5. The spectrum adjusting system based on frequency modulation according to claim 1, wherein the lamp bead circuit (5) at least comprises a first lamp bead circuit (52) and a second lamp bead circuit (53), the first lamp bead circuit (52) and the second lamp bead circuit (53) are connected in series, the first lamp bead circuit (52) is formed by connecting a plurality of lamp beads (51) of one spectrum, the second lamp bead circuit (53) is formed by connecting a plurality of lamp beads (51) of another spectrum, the switch tube (31) at least comprises a first switch tube (311) and a second switch tube (312), the first lamp bead circuit (52) and the first switch tube (311) are connected in parallel, and the second lamp bead circuit (53) and the second switch tube (312) are connected in parallel.
6. The frequency modulation based spectral adjustment system of claim 1, the lamp bead circuit (5) at least comprises a first lamp bead circuit (52) and a second lamp bead circuit (53), the first lamp bead circuit (52) is formed by connecting lamp beads (51) with different spectrums according to a first set rule, the second lamp bead circuit (53) is formed by connecting lamp beads (51) with different spectrums according to a second set rule, the switch tube (31) at least comprises a first switch tube (311) and a second switch tube (312), the first lamp bead circuit (52) and the first lamp bead unit (6) formed by connecting the first switch tube (311) in series are connected in parallel with the second lamp bead circuit (53) and the second lamp bead unit (7) formed by connecting the second switch tube (312) in series, and the first set rule is different from the second set rule.
7. The frequency modulation based spectral adjustment system of claim 1, the lamp bead circuit (5) at least comprises a first lamp bead circuit (52) and a second lamp bead circuit (53), the first lamp bead circuit (52) and the second lamp bead circuit (53) are connected in series, the first lamp bead circuit (52) is formed by connecting lamp beads (51) with different spectrums according to a first set rule, the second lamp bead circuit (53) is formed by connecting lamp beads (51) with different spectrums according to a second set rule, the switch tube (31) at least comprises a first switch tube (311) and a second switch tube (312), the first lamp bead circuit (52) is connected with the first switch tube (311) in parallel, the second lamp bead circuit (53) is connected with the second switch tube (312) in parallel, and the first set rule is different from the second set rule.
8. The system for adjusting spectrum based on frequency modulation according to claim 1, wherein the control circuit (32) comprises a frequency detection unit (321) and a comparison output unit (322), and the control circuit (32) is configured to control the switch tube (31) to be turned on or off through the comparison output unit (322) when the frequency detection unit (321) detects the frequency of the PWM voltage output by the power supply module (2) so as to control the corresponding lamp bead circuit (5) in the lamp (1) to start or stop emitting light.
9. The spectrum adjusting system based on frequency modulation as claimed in claim 1, wherein the control circuit (32) comprises a frequency detection unit (321) and an operational amplifier (323), and the control circuit (32) is configured to adjust the impedance of the switch tube (31) through the operational amplifier (323) to adjust the brightness of the corresponding light bulb circuit (5) when the frequency detection unit (321) detects the frequency of the PWM voltage output by the power supply module (2).
10. A method for spectral adjustment based on frequency modulation, the method being implemented based on a system for spectral adjustment based on frequency modulation according to any one of claims 1 to 9, the method comprising:
determining the optimal spectrum proportion required by the plant according to the current growing environment requirement of the plant, wherein the optimal spectrum proportion is the illumination proportion among different spectrums;
detecting the frequency of the PWM voltage output by the power supply module (2) by using a control circuit (32);
when the frequency of the PWM voltage output by the power supply module (2) is detected, the corresponding lamp bead circuit (5) in the lamp (1) is controlled to start emitting light or stop emitting light by controlling the switch tube (31) to be switched on or switched off through the control circuit (32) based on the optimal spectrum proportion so as to adjust the spectrum to realize the most suitable illumination environment for plant growth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111435512.7A CN114096039B (en) | 2021-11-29 | 2021-11-29 | Spectrum adjusting system and method based on frequency modulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111435512.7A CN114096039B (en) | 2021-11-29 | 2021-11-29 | Spectrum adjusting system and method based on frequency modulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114096039A true CN114096039A (en) | 2022-02-25 |
| CN114096039B CN114096039B (en) | 2024-02-02 |
Family
ID=80305774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111435512.7A Active CN114096039B (en) | 2021-11-29 | 2021-11-29 | Spectrum adjusting system and method based on frequency modulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114096039B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815848A (en) * | 1985-03-28 | 1989-03-28 | Gruen-Optik Wetzlar Gmbh | Device for the individual adjustment of the intensity of several spectral lamps |
| JP2001093693A (en) * | 1999-09-27 | 2001-04-06 | Matsushita Electric Works Ltd | Dimmer light lighting apparatus |
| JP2002190398A (en) * | 2000-12-20 | 2002-07-05 | Toshiba Lighting & Technology Corp | Lighting device and lighting system |
| US20100277103A1 (en) * | 2009-05-04 | 2010-11-04 | Civilight Shenzhen Semiconductor Lighting Co., Ltd . | Led dimmer device adapted for use in dimmer |
| CN103256509A (en) * | 2013-05-22 | 2013-08-21 | 北京铨富光电科技有限公司 | Sectional type LED dimming lamp without externally arranged dimmer and dimming method thereof |
| CN103698282A (en) * | 2013-12-23 | 2014-04-02 | 南京农业大学 | Modulation LED (Light-Emitting Diode) light source drive circuit used for monitoring crop growth information |
| CN105823005A (en) * | 2016-05-18 | 2016-08-03 | 皖西学院 | Intelligent regulation and control polychromatic light LED plant growth lamp system and regulation and control method thereof |
| CN205946280U (en) * | 2014-12-12 | 2017-02-08 | 骆武宁 | Module of adjusting luminance and application product thereof |
| CN106922414A (en) * | 2017-02-27 | 2017-07-07 | 广东工业大学 | A kind of intelligent controlling device and method that plant growth lighting is carried out with LED |
| CN107690211A (en) * | 2016-08-04 | 2018-02-13 | 广州达森灯光股份有限公司 | A kind of plant growth lamp color matching method and system |
| CN112235905A (en) * | 2020-10-23 | 2021-01-15 | 青岛易来智能科技股份有限公司 | Brightness adjusting circuit, lamp and LED brightness control method |
| US20210212267A1 (en) * | 2018-05-31 | 2021-07-15 | Signify Holding B.V. | A horticultural lighting device for sustaining indoor plant growth as well as corresponding horticultural lighting system and method |
| CN214369559U (en) * | 2021-02-02 | 2021-10-08 | 中山职业技术学院 | Red-blue ratio adjustable LED plant growth lamp |
| US20210356107A1 (en) * | 2020-05-13 | 2021-11-18 | Xiamen Hi-Light Lighting Co., Ltd | Plant Growth Lamp |
| CN216775076U (en) * | 2021-11-29 | 2022-06-17 | 四维生态科技（杭州）有限公司 | Spectrum adjusting system based on frequency modulation |
-
2021
- 2021-11-29 CN CN202111435512.7A patent/CN114096039B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815848A (en) * | 1985-03-28 | 1989-03-28 | Gruen-Optik Wetzlar Gmbh | Device for the individual adjustment of the intensity of several spectral lamps |
| JP2001093693A (en) * | 1999-09-27 | 2001-04-06 | Matsushita Electric Works Ltd | Dimmer light lighting apparatus |
| JP2002190398A (en) * | 2000-12-20 | 2002-07-05 | Toshiba Lighting & Technology Corp | Lighting device and lighting system |
| US20100277103A1 (en) * | 2009-05-04 | 2010-11-04 | Civilight Shenzhen Semiconductor Lighting Co., Ltd . | Led dimmer device adapted for use in dimmer |
| CN103256509A (en) * | 2013-05-22 | 2013-08-21 | 北京铨富光电科技有限公司 | Sectional type LED dimming lamp without externally arranged dimmer and dimming method thereof |
| CN103698282A (en) * | 2013-12-23 | 2014-04-02 | 南京农业大学 | Modulation LED (Light-Emitting Diode) light source drive circuit used for monitoring crop growth information |
| CN205946280U (en) * | 2014-12-12 | 2017-02-08 | 骆武宁 | Module of adjusting luminance and application product thereof |
| CN105823005A (en) * | 2016-05-18 | 2016-08-03 | 皖西学院 | Intelligent regulation and control polychromatic light LED plant growth lamp system and regulation and control method thereof |
| CN107690211A (en) * | 2016-08-04 | 2018-02-13 | 广州达森灯光股份有限公司 | A kind of plant growth lamp color matching method and system |
| CN106922414A (en) * | 2017-02-27 | 2017-07-07 | 广东工业大学 | A kind of intelligent controlling device and method that plant growth lighting is carried out with LED |
| US20210212267A1 (en) * | 2018-05-31 | 2021-07-15 | Signify Holding B.V. | A horticultural lighting device for sustaining indoor plant growth as well as corresponding horticultural lighting system and method |
| US20210356107A1 (en) * | 2020-05-13 | 2021-11-18 | Xiamen Hi-Light Lighting Co., Ltd | Plant Growth Lamp |
| CN112235905A (en) * | 2020-10-23 | 2021-01-15 | 青岛易来智能科技股份有限公司 | Brightness adjusting circuit, lamp and LED brightness control method |
| CN214369559U (en) * | 2021-02-02 | 2021-10-08 | 中山职业技术学院 | Red-blue ratio adjustable LED plant growth lamp |
| CN216775076U (en) * | 2021-11-29 | 2022-06-17 | 四维生态科技（杭州）有限公司 | Spectrum adjusting system based on frequency modulation |
Non-Patent Citations (3)
| Title |
|---|
| ALEKSEY V. KUDRYASHOV等: "Experimental PWM Controlled Device", 《2019 INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING, APPLICATIONS AND MANUFACTURING (ICIEAM)》 * |
| 何林等: "智能LED植物补光灯设计", 《天津职业技术师范大学学报》, no. 3 * |
| 鞠红艳等: "微型植物工厂LED多光谱补光系统的设计与应用", 《吉林农业大学学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114096039B (en) | 2024-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102458014B (en) | Light source control method, device and system | |
| CN108337764A (en) | Constant pressure exports AC phase Dimmable LED drivers | |
| CN202652640U (en) | LED plant growing lamp | |
| CN205693930U (en) | A kind of intelligent dimming LED plant lamp drive system | |
| JP2007174723A (en) | Ac/dc converting power supply and light emitting diode driving system using the same | |
| KR101027205B1 (en) | Led illuminating device for plant cultivation | |
| CN103929852A (en) | LED lamp with light and color capable of being adjusted | |
| CN202565520U (en) | LED dimming driver and LED light source system | |
| CN216775076U (en) | Spectrum adjusting system based on frequency modulation | |
| CN202135364U (en) | LED driving device | |
| CN103596336A (en) | LED dimming and color adjusting circuit | |
| CN216775069U (en) | Spectrum adjusting system based on voltage modulation | |
| CN210958891U (en) | Multi-output control circuit for LED plant light supplement lamp | |
| CN111417238A (en) | developments illumination L ED plant lamp system | |
| CN214663825U (en) | Plant lighting device | |
| CN102811527A (en) | LED frequency-variable marker lamp and control circuit and control method of marker lamp | |
| CN103634986B (en) | Multichannel light modulating device and light-dimming method thereof | |
| CN114096039B (en) | Spectrum adjusting system and method based on frequency modulation | |
| CN202998609U (en) | Led constant current dimming power supply | |
| CN107152616A (en) | A kind of intelligent LED bulb lamp of tunable optical color-temperature regulating | |
| CN103945612A (en) | LED lamp remote control drive circuit capable of adjusting light and color temperature | |
| CN114173445B (en) | Spectrum adjusting system and method based on voltage modulation | |
| KR101037553B1 (en) | Controller for LED mood lamp installed in bus | |
| CN105813270A (en) | Intelligent light adjusting method and device of LED filament lamp | |
| CN208079441U (en) | A kind of LED plant lamps light adjusting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |