CN209543085U - A kind of LED illumination control system of plant factor - Google Patents
A kind of LED illumination control system of plant factor Download PDFInfo
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- CN209543085U CN209543085U CN201920181790.6U CN201920181790U CN209543085U CN 209543085 U CN209543085 U CN 209543085U CN 201920181790 U CN201920181790 U CN 201920181790U CN 209543085 U CN209543085 U CN 209543085U
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Abstract
This application discloses a kind of LED illumination control systems of plant factor, it include: driving power and controller, the output cathode and output negative pole of driving power are parallel with N branch, each branch road is in series with first switch tube and for providing the LED illumination lamp group of illumination for the plant in target plant factory, also, the on or off of the first switch tube of N item branch road is controlled by controller.Because being in this application the on or off state for controlling each LED illumination lamp group in target plant factory by a driving power, a controller and N number of first switch tube, so the design cost of LED illumination control system can be substantially reduced by the application.
Description
Technical field
The utility model relates to intelligent lighting technical field, in particular to a kind of LED illumination control system of plant factor.
Background technique
Plant factor, which refers to, carries out high-precision control to the growing environment of plant by computer or sensor, and is come with this
Shorten the growth cycle of plant.In existing plant factor, for the photosynthesis of simulating plant, it usually needs in plant work
A LED illumination lamp group is set in each cultivation space of factory, then connects a driving electricity in each LED illumination lamp group
Then source by opening or closing to control the on or off of LED illumination lamp group for driving power, and is come with this for cultivation
Plant in space provides corresponding growing environment.But in this kind of LED illumination control system, need for each LED photograph
Bright lamp group provides a driving power, not only will increase the usage quantity of driving power in LED illumination control system in this way, and
And it can also greatly increase the design cost of LED illumination control system.
It is this it can be seen that kind of mode to reduce the design cost of the LED illumination control system of plant factor by
Field technical staff's urgent problem to be solved.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of LED illumination control system of plant factor, to reduce
The design cost of LED illumination control system.Its concrete scheme is as follows:
A kind of LED illumination control system of plant factor, comprising: driving power and controller, the driving power it is defeated
Anode and output negative pole are parallel with N branch out, and each branch road is in series with first switch tube and for being target plant
Plant in factory provides the LED illumination lamp group of illumination, also, the on or off of the first switch tube of branch road described in N item
It is controlled by the controller；N≥2.
Preferably, the driving power is specially constant-voltage driving power source.
Preferably, the constant-voltage driving power source includes rectifier bridge, Boost circuit and LLC circuit；
Wherein, the first end of the rectifier bridge and the second end of the rectifier bridge are connected with power grid respectively, the rectifier bridge
Third end be connected with the first end of the Boost circuit, the second end at the 4th end and the Boost circuit of the rectifier bridge
It is connected, the third end of the Boost circuit is connected with the first end of the LLC circuit, the 4th end of the Boost circuit and institute
The second end for stating LLC circuit is connected；
Correspondingly, output cathode of the third end of the LLC circuit for the driving power, the 4th of the LLC circuit the
End is the output negative pole of the driving power.
Preferably, the Boost circuit include the first inductance, first diode, second switch, the first electrolytic capacitor,
Pfc circuit, the first amplifier, first resistor and first capacitor；
Wherein, the second end of first inductance is connected with the first diode anode, and the first diode is born
Pole is connected with the anode of the electrolytic capacitor, and the cathode of the electrolytic capacitor is connected with one end of the second switch, described
The other end of second switch is connected with the second end of the inductance, the control terminal of the second switch and the pfc circuit
Output end be connected, the input terminal of the pfc circuit is connected with the output end of first amplifier, the amplifier forward direction input
End for receiving the first reference voltage, the reverse input end of the amplifier respectively with the cathode of the first diode and described the
The anode of one capacitor is connected, and the cathode of the first capacitor is connected with the first end of the first resistor, the first resistor
Second end is connected with the output end of the amplifier；
The first end of first inductance is the first end of the Boost circuit, and one end of the second switch is institute
The second end of Boost circuit is stated, the cathode of the first diode is the third end of the Boost circuit, first electrolysis
The cathode of capacitor is the 4th end of the Boost circuit.
Preferably, the LLC circuit include third switching tube, the 4th switching tube, the second inductance, the second capacitor, transformer,
Second diode, third diode, the second electrolytic capacitor, the second amplifier, second resistance, third capacitor and for controlling described three
Switching tube and the 4th switching tube alternate conduction or the control circuit of shutdown；
Wherein, the control terminal of the third switching tube is connected with the first end of the control circuit, the third switching tube
One end be connected with one end of the 4th switching tube, the second end of the control terminal of the 4th switching tube and the control circuit
It is connected, the first end of second inductance is connected with one end of the third switching tube, the second end of second inductance and institute
The first end for stating transformer is connected, and the other end of the 4th switching tube is connected with the anode of second capacitor, and described second
The cathode of capacitor is connected with the second end of the transformer, the positive phase at the third end of the transformer and second diode
Even, the 4th end of the transformer is connected with the anode of the third diode, the cathode of the third diode and described the
The cathode of two diodes is connected, and the 5th end of the transformer is connected with the cathode of second electrolytic capacitor, second electricity
The anode of solution capacitor is connected with the cathode of second diode, and the third end of the control circuit is defeated with second amplifier
Outlet is connected, and the positive input of second amplifier is for receiving the second reference voltage, the reversed input of second amplifier
End is connected with the cathode of the anode of the third capacitor and second diode respectively, the cathode of the third capacitor with it is described
The first end of second resistance is connected, and the second end of the second resistance is connected with the output end of second amplifier；
The other end of the third switching tube is the first end of the LLC circuit, and the other end of the 4th switching tube is
The second end of the LLC circuit, the third end of the just extremely described LLC circuit of second electrolytic capacitor, second electrolysis
The cathode of capacitor is the 4th end of the LLC circuit.
It preferably, further include the current-limiting circuit for being in preset value for controlling the electric current of the first switch tube.
Preferably, the current-limiting circuit includes third amplifier and 3rd resistor；
Wherein, the output end of the third amplifier is connected with the control terminal of the first switch tube, the third amplifier
Positive input is connected with the controller, the reverse input end of third amplifier one end with the first switch tube respectively
It is connected with the first end of the 3rd resistor, the second end of the 3rd resistor is connected with the output negative pole of the driving power,
The other end of the first switch tube is connected with one end of the LED illumination lamp group, the other end of the LED illumination lamp group and institute
The output cathode for stating driving power is connected；
Alternatively, the output end of the third amplifier is connected with the control terminal of the first switch tube, the third amplifier
Positive input is connected with the controller, the reverse input end of third amplifier one end with the first switch tube respectively
It is connected with the first end of the 3rd resistor, the second end of the 3rd resistor is connected with one end of the LED illumination lamp group, institute
The other end for stating LED illumination lamp group is connected with the output negative pole of the driving power, the other end of the first switch tube and institute
The output cathode for stating driving power is connected.
Preferably, the current-limiting circuit is specially IGBT.
Preferably, the current-limiting circuit is specially metal-oxide-semiconductor.
Preferably, the controller includes:
For according to all first switch tubes in target plant factory described in default control rule alternating or Interleaved control
The operation controller of on or off.
As it can be seen that in the LED illumination control system of plant factor provided by the utility model being driven by one
Power supply, a controller and N number of first switch tube replace N number of driving power in the prior art, to control target plant
The on or off of N number of LED illumination lamp group in factory, due to a controller, a driving power and N number of first switch tube
Cost is far smaller than the cost of N number of driving power, so, it can be substantially reduced on the whole by the utility model
The design cost of LED illumination control system.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of structure chart of the LED illumination control system of plant factor provided by the embodiment of the utility model；
Fig. 2 is a kind of structure chart of constant-voltage driving power source provided by the embodiment of the utility model；
Fig. 3 is the structure chart of the LED illumination control system of another plant factor provided by the embodiment of the utility model；
Fig. 4 is the schematic diagram that a kind of two groups of LED illumination lamp groups provided by the embodiment of the utility model are alternately opened；
Fig. 5 is the schematic diagram that a kind of three groups of LED illumination lamp groups provided by the embodiment of the utility model are alternately opened.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, being a kind of LED illumination control system of plant factor provided by the embodiment of the utility model, this is
System includes:
Driving power and controller, the output cathode and output negative pole of driving power are parallel with N branch, each branch
On be in series with first switch tube and for providing the LED illumination lamp group of illumination, also, N for the plant in target plant factory
The on or off of the first switch tube of item branch road is controlled by controller；N≥2.
As shown in Figure 1, being the structure chart of LED illumination control system provided in this embodiment, within the system, driving power
Output cathode be connected respectively with the first end of N number of LED illumination lamp group, the second end of N number of LED illumination lamp group is respectively with N number of
One end of one switching tube is connected, and the other end of N number of first switch tube is connected with the output negative pole of driving power respectively, and N number of first
The control terminal of switching tube is connected with controller respectively.
It should be noted that in the present embodiment, LED in parallel branch between driving power output cathode and output negative pole
The link position relationship of lighting lamp group and first switch tube in practical application can be interchanged, that is, the output of driving power
Anode either first be connected with LED illumination lamp group, be also possible to elder generation and be connected with first switch tube, the present embodiment to it not
Make specific limit.
In the present embodiment, it is connected at driving power both ends N number of for providing illumination for the plant in target plant factory
LED illumination lamp group L1, L2 ... Ln, wherein this N number of LED illumination lamp group L1, L2 ... Ln, can also be with either series connection
Parallel connection, the present embodiment are not construed as limiting it.
Later, N number of first switch tube S1, N number of first switch tube S1 and N number of LED illumination are also connected in driving power
Lamp group L1, L2 ... Ln is connected to the rear class of driving power after connecting respectively, wherein the control terminal of N number of first switch tube S1
It is both connected to the output end of controller, and controls by controller that N number of first switch tube is in the conductive state or off state, this
Sample one, so that it may so that N number of LED illumination lamp group L1, L2 ... Ln is in the open state or closed state.
It should be noted that each cultivation space in target plant factory is arranged in each LED illumination lamp group
Inside cultivates at each and plants plant in space, mutually indepedent between each cultivation space, also, in each cultivation
Equipment required for cultivated plant, such as cultivating stand, Planting board, nutrient solution and illumination equipment can also be set in space.
It is also contemplated that in the present embodiment, N number of LED illumination lamp can be driven simultaneously using the same driving power
The illumination of group L1, L2 ... Ln, then, controller passes through the on or off for controlling N number of first switch tube, to control N number of LED
Lighting lamp group L1, L2 ... Ln's is switched on or off, and so, LED illumination control system can control target plant work
Plant in factory in each cultivation space is alternately in illumination conditions or dark state, and thus comes in target plant factory
Plant carries out growth control.
Obviously, compared with the prior art, pass through the LED illumination control system provided in this implementation, it is thus only necessary to one
Driving power, a controller and N number of first switch tube can control N number of LED illumination lamp group L1, L2 ... Ln conducting or
Shutdown, so, in this way, the usage quantity of driving power in LED illumination control system can be greatly reduced, in this way
One, it is greatly lowered the whole design cost of LED illumination control system, moreover, controlling N number of LED illumination by controller
Lamp group L1, L2 ... Ln is alternately or staggeredly in the open state, can also reduce the general power of driving power output.
As it can be seen that being by a driving electricity in the LED illumination control system of the plant factor provided by the present embodiment
Source, a controller and N number of first switch tube replace N number of driving power in the prior art, to control target plant work
The on or off of N number of LED illumination lamp group in factory, due to making for a controller, a driving power and N number of first switch tube
Valence cost is far smaller than the cost of N number of driving power, so, LED can be substantially reduced on the whole through this embodiment
The design cost of lighting control system.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution.Specifically, driving power
For constant-voltage driving power source.
It is understood that constant-voltage driving power source refers to the constant driving power of the voltages keep constant of output.Because permanent
Pressure driving power has the advantages that good in anti-interference performance, DC ripple are small, work efficiency is high, so, in the present embodiment, it will drive
Dynamic power supply is set as constant-voltage driving power source, it is ensured that the safety and stability of LED illumination control system in the process of running.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution.As shown in Fig. 2, being this
A kind of structure chart for constant-voltage driving power source that embodiment provides.
As a preferred embodiment, constant-voltage driving power source includes rectifier bridge, Boost circuit and LLC circuit；
Wherein, the first end of rectifier bridge and the second end of rectifier bridge are connected with power grid respectively, the third end of rectifier bridge with
The first end of Boost circuit is connected, and the 4th end of rectifier bridge is connected with the second end of Boost circuit, the third end of Boost circuit
It is connected with the first end of LLC circuit, the 4th end of Boost circuit is connected with the second end of LLC circuit；
Correspondingly, the third end of LLC circuit is the output cathode of driving power, the 4th end of LLC circuit is driving power
Output negative pole.
In the present embodiment, there is provided a kind of structure charts of specific constant-voltage driving power source.In the constant-voltage driving power source
In, rectifier bridge is used for the alternating voltage V for exporting power gridinBe converted to DC voltage Vac, Boost circuit is used for rectifier bridge is defeated
DC voltage V outacIt is converted into steady dc voltage Vbus, DC voltage V of the LLC circuit for exporting Boost circuitbus
It is converted into the DC voltage of constant amplitude.
As it can be seen that constant-voltage driving power source provided by through this embodiment, may further ensure that constant-voltage driving power source exports
DC voltage stability.
Specifically, Boost circuit includes the first inductance, first diode, second switch, the first electrolytic capacitor, PFC electricity
Road, the first amplifier, first resistor and first capacitor；
Wherein, the second end of the first inductance is connected with first diode anode, the cathode and electrolytic capacitor of first diode
Anode be connected, the cathode of electrolytic capacitor is connected with one end of second switch, the of the other end of second switch and inductance
Two ends are connected, and the control terminal of second switch is connected with the output end of pfc circuit, the input terminal of pfc circuit and the first amplifier
Output end is connected, and the positive input of amplifier is for receiving the first reference voltage, and the reverse input end of amplifier is respectively with the one or two
The cathode of pole pipe is connected with the anode of first capacitor, and the cathode of first capacitor is connected with the first end of first resistor, first resistor
Second end be connected with the output end of amplifier；
The first end of first inductance is the first end of Boost circuit, and one end of second switch is the second of Boost circuit
End, the cathode of first diode are the third end of Boost circuit, and the cathode of the first electrolytic capacitor is the 4th end of Boost circuit.
In the present embodiment, there is provided a kind of structure charts of specific Boost circuit, as shown in Fig. 2, driving in the constant pressure
In the Boost circuit of dynamic power supply, the first inductance L1, first diode D1, second switch S2 and the first electrolytic capacitor C4 composition
First main power circuit, the first amplifier, first resistor and first capacitor form a feedback loop, which can be by Boost electricity
The DC voltage V of road outputbusWith the first reference voltage Vref1It is compared, and output signal is sent to pfc circuit and is carried out
Correction, later, the drive control for the on or off that pfc circuit can export control second switch S2 according to the output signal are believed
Number, so, so that it may so that Boost circuit exports steady dc voltage Vbus。
Specifically, LLC circuit includes third switching tube, the 4th switching tube, the second inductance, the second capacitor, transformer, second
Diode, third diode, the second electrolytic capacitor, the second amplifier, second resistance, third capacitor and for control three switching tubes and
4th switching tube alternate conduction or the control circuit of shutdown；
Wherein, the control terminal of third switching tube is connected with the first end of control circuit, one end of third switching tube and the 4th
One end of switching tube is connected, and the control terminal of the 4th switching tube is connected with the second end of control circuit, the first end of the second inductance and
One end of third switching tube is connected, and the second end of the second inductance is connected with the first end of transformer, the other end of the 4th switching tube
It is connected with the anode of the second capacitor, the cathode of the second capacitor is connected with the second end of transformer, the third end and second of transformer
The anode of diode is connected, and the 4th end of transformer is connected with the anode of third diode, the cathode of third diode and second
The cathode of diode is connected, and the 5th end of transformer is connected with the cathode of the second electrolytic capacitor, the second electrolytic capacitor positive and
The cathode of second diode is connected, and the third end of control circuit is connected with the output end of the second amplifier, and the forward direction of the second amplifier is defeated
Enter end for receive the second reference voltage, the reverse input end of the second amplifier respectively with third capacitor anode and the second diode
Cathode be connected, the cathode of third capacitor is connected with the first end of second resistance, the second end of second resistance and the second amplifier
Output end is connected；
The other end of third switching tube is the first end of LLC circuit, and the other end of the 4th switching tube is the second of LLC circuit
End, the just extremely third end of LLC circuit of the second electrolytic capacitor, the cathode of the second electrolytic capacitor are the 4th end of LLC circuit.
In the present embodiment, a kind of structure chart for the specific LLC circuit being to provide, in the LLC circuit, third switch
Pipe S3, the 4th switching tube S4, the second inductance, transformer, the second diode D2, third diode D3 and the second electrolytic capacitor C5 group
At the second main power circuit, the second amplifier, second resistance R2 and third capacitor C3 form Voltage loop, which can be by LLC electricity
The DC voltage V of road output0With the second reference voltage Vref2It is compared, then, exports control third switch to control circuit
Pipe S3 and the 4th switching tube S4 is alternately on or the control signal of off state, so, so that it may so that LLC circuit
Output amplitude steady dc voltage V0。
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution.As shown in figure 3, for this
The structure chart of the LED illumination control system for another plant factor that inventive embodiments provide.Specifically, above-mentioned LED illumination control
System processed further include:
Electric current for controlling first switch tube is in the current-limiting circuit of preset value.
In the present embodiment, it in order to guarantee the stability of LED illumination control system in the process of running, is also shone in the LED
The current-limiting circuit for being in preset value for controlling the electric current of first switch tube S1 is provided in bright control system, so, just
It can guarantee that the current value flowed through in first switch tube S1 is more stable, and thereby ensure that LED illumination lamp group is shone to plant
Stability during bright.
Optionally, current-limiting circuit includes third amplifier and 3rd resistor；
Wherein, the output end of third amplifier is connected with the control terminal of first switch tube, the positive input of third amplifier with
Controller is connected, and the reverse input end of third amplifier is connected with the first end of one end of first switch tube and 3rd resistor respectively,
The second end of 3rd resistor is connected with the output negative pole of driving power, the other end of first switch tube and the one of LED illumination lamp group
End is connected, and the other end of LED illumination lamp group is connected with the output cathode of driving power；
Alternatively, the output end of third amplifier is connected with the control terminal of first switch tube, the positive input of third amplifier with
Controller is connected, and the reverse input end of third amplifier is connected with the first end of one end of first switch tube and 3rd resistor respectively,
The second end of 3rd resistor is connected with one end of LED illumination lamp group, and the other end of LED illumination lamp group and the output of driving power are negative
Extremely it is connected, the other end of first switch tube is connected with the output cathode of driving power.
As shown in figure 3, being the structure chart of the LED illumination control system of another plant factor provided in this embodiment.?
In LED illumination control system shown in Fig. 3, current-limiting circuit includes third amplifier and 3rd resistor；Current-limiting circuit includes third fortune
It puts and 3rd resistor, third amplifier can acquire the electric current for flowing through first switch tube S1, and the electric current is input to third amplifier
Reverse input end is compared with the reference voltage of positive input, is exported corresponding control signal, is opened so that flowing through first
The electric current for closing pipe S1 does not exceed current value set by reference signal, so, so that it may guarantee in first switch tube
Electric current is in preset value.
In addition, it is necessary to explanation, the link position of LED illumination lamp group and first switch tube can be into the structure chart
Row exchanges, and working principle is no difference, so, working principle of another current-limiting circuit is not repeated specifically at this.
As it can be seen that through this embodiment provided by current-limiting circuit, it is ensured that current-limiting circuit in actual operation can be real
Shi Xing.
Optionally, current-limiting circuit is specially IGBT.
In practical applications, current-limiting circuit can also be set to IGBT (Insulated Gate Bipolar
Transistor, insulated gate bipolar transistor) because IGBT can not only play the metering function to first switch tube S1,
Moreover, because IGBT also has many advantages, such as that energy conservation, heat dissipation is stable, safety operation area is big, so, it sets current-limiting circuit to
IGBT can also further increase the safety of LED illumination control in the process of running.
Optionally, current-limiting circuit is specially metal-oxide-semiconductor.
In practical applications, metal-oxide-semiconductor can also be set by current-limiting circuit, opened because metal-oxide-semiconductor can also be played first
The metering function of pipe S1 is closed, moreover, it is the long service life of metal-oxide-semiconductor, light-weight, small in size, so, it will be able to opposite to reduce
Dimensional footprint of the current-limiting circuit to LED illumination control system.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution.Specifically, above-mentioned control
Device includes:
For the conducting according to all first switch tubes in default control rule alternating or Interleaved control target plant factory
Or the operation controller of shutdown.
In practical applications, can also be arranged in the controller for according to preset rules Interleaved control target plant factory
In all first switch tubes be on or the operation controller of off state, that is, controlling driving by operation controller
The N number of LED illumination lamp group connected on power supply is alternately or staggeredly on or off state, so that in target plant factory
The opening and closing of all LED illumination lamp groups are alternately or staggeredly to carry out, so that the plant in target plant factory can
In environment alternately in light and dark.
It should be noted that enabling to all LED illumination lamp group alternatings in target plant factory in practical application
Or staggeredly setting method in the conductive state is varied, so, the setting method of default control rule is also varied.Cause
This, the present embodiment is not construed as limiting the specific setting method of default control rule, as long as enabling in target plant factory
Each LED illumination lamp group alternately or is staggeredly on or off state.
In the present embodiment, since the LED illumination lamp group in target plant factory is alternating or staggeredly in the conductive state,
In compared with the prior art, while the method for opening LED illumination lamp group, it can substantially reduce and drive electricity in target plant factory
General power consumed by source.
In the present embodiment, operation controller alternately or is staggeredly controlled by default control rule by a specific example
The process of the on or off of all first switch tubes is illustrated in target plant factory processed.Specifically, can first preparatory root
It needs to set the opening time of each LED illumination lamp group in target plant factory according to the illumination of plant in target plant factory and opens
Open the period；Then, based on LED illumination lamp groups all in target plant factory alternating or principle staggeredly in the conductive state, root
It is according to the quantity setting target first switch tube of LED illumination lamp group in opening time, unlatching period and target plant factory
The opening time of on state；Wherein, target first switch tube is any one first switch tube in target plant factory；Most
Afterwards, the on or off of all first switch tubes in target plant factory is successively controlled according to the opening time.
It is understood that since each LED illumination lamp group is that cultivation space different in target plant factory is arranged in
In the middle, so, the unlatching period and opening time of each LED illumination lamp group in target plant factory, it should be by target plant
The growth phase of plant is determined in each cultivation space in factory.
So being to be needed the illumination of plant for target plant work according to target plant factory first in the present embodiment
Each of factory LED illumination lamp group sets opening time Ton1、Ton2、…、TonNWith unlatching cycle T1、T2、…、Tn, then, then
The quantity of LED illumination lamp group in combining target plant factor, and based on LED illumination lamp groups all in target plant factory alternately or
Staggeredly principle in the conductive state, when going target first switch tube unlatching in the conductive state in setting target plant factory
Between, finally, successively being controlled all in target plant factory according to the target first switch tube opening time in the conductive state
The on or off of one switching tube, it is clear that the method in through this embodiment can make LED all in target plant factory
Lighting lamp group is alternately or staggeredly in the conductive state.
Further, it should be noted that the method in through this embodiment, available at multiple target first switch tubes
In the opening time of on state, so, specifically set how many for the opening time of target first switch tube, it can be according to reality
Depending on the situation of border, the present embodiment is not especially limited it.
As it can be seen that the method in through this embodiment, it is ensured that staff is in setting default control procedure of rule
Global reliability.
As shown in figure 4, the schematic diagram alternately opened for two groups of LED illumination lamp groups provided in an embodiment of the present invention.If
There are two groups of LED illumination lamp groups in target plant factory, the misphase time t that this two groups of LED illumination lamp groups are opened012h is set as,
And T is set by the opening time of this two groups of LED illumination lamp groupson1=Ton2=12h, unlatching period are set as T1=T2=for 24 hours,
So, it is as shown in Figure 4 to open situation for the misphase of this two groups of LED illumination lamp groups.
In this example, it is assumed that the power of each group of LED illumination lamp group is identical in above-mentioned two groups of LED illumination lamp groups, and
The power of each group of LED illumination lamp group is set as P0, driving power power be set as P, then, through this embodiment in side
Method, driving power needed for driving power are P=P0.If according to the method in the prior art, each group of LED illumination lamp group
It is required to a driving power driving, at this point, driving power needed for driving power is P=2P0。
As shown in figure 5, the schematic diagram alternately opened for three groups of LED illumination lamp groups provided in an embodiment of the present invention.If
There are three groups of LED illumination lamp groups in target plant factory, the misphase time t that this three groups of LED illumination lamp groups are opened08h is set as,
T is set by the opening time of this three groups of LED illumination lamp groupson1=Ton2=Ton 3=16h, unlatching period are set as T1=T2=
T3=for 24 hours, then, it is as shown in Figure 5 that the misphase of this three groups of LED illumination lamp groups opens situation.
In this example, it is assumed that the power of each group of LED illumination lamp group is identical in above-mentioned three groups of LED illumination lamp groups, and
The power of each group of LED illumination lamp group is set as P0, driving power power be set as P, then, through this embodiment in side
Method, driving power needed for driving power are P=2P0.If according to the method in the prior art, each group of LED illumination lamp
Group is required to a driving power driving, at this point, driving power needed for driving power is P=3P0。
It can be seen that power consumed by driving power can not only be reduced by the method in the application, moreover,
The design cost of LED illumination control system can be reduced on the whole.
It is to be said to the alternating or Interleaved control method of LED illumination lamp group each in LED illumination control system above
Bright, for the time interval t of any two adjacent LED lighting lamp group in target plant factory selection can pass through following sides
Method is calculated, specific:
WhenWhen for integer,
WhenWhen not being integer,
In formula, k is natural number, and T is the unlatching period of LED illumination lamp group, TonFor the opening time of LED illumination lamp group, t is
The time interval of any two adjacent LED lighting lamp group in target plant factory.
In specific implementation, N is to determine value, is the quantity of LED illumination lamp group in LED illumination control system, f (x)=1
Indicate that LED illumination lamp group is in the open state, f (x)=0 indicates that LED illumination lamp group is in close state.
Specifically, it is desirable that the x for substituting into operation can take any positive number, when equation is set up, only one change of entire equation
T is measured, so, the value range of variable t can be calculated.In practical application, in order to save computing resource, if T and Ton
Value be as unit of integer hour, then, the value of t need to only take all integer hours in a T.
It should be noted that in practical application, for the simplicity of calculating process, whenWhen for integer, t's is taken
Value isWhenWhen cannot be divided evenly, the value of t be
The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the utility model.
Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this is practical new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (10)
1. a kind of LED illumination control system of plant factor characterized by comprising driving power and controller, the driving
The output cathode and output negative pole of power supply are parallel with N branch, each branch road be in series with first switch tube and for for
Plant in target plant factory provides the LED illumination lamp group of illumination, also, the first switch tube of branch road described in N item is led
Logical or shutdown is controlled by the controller；N≥2.
2. LED illumination control system according to claim 1, which is characterized in that the driving power is specially that constant pressure is driven
Dynamic power supply.
3. LED illumination control system according to claim 2, which is characterized in that the constant-voltage driving power source includes rectification
Bridge, Boost circuit and LLC circuit；
Wherein, the first end of the rectifier bridge and the second end of the rectifier bridge are connected with power grid respectively, and the of the rectifier bridge
Three ends are connected with the first end of the Boost circuit, the 4th end of the rectifier bridge and the second end phase of the Boost circuit
Even, the third end of the Boost circuit is connected with the first end of the LLC circuit, the 4th end of the Boost circuit with it is described
The second end of LLC circuit is connected；
Correspondingly, the third end of the LLC circuit is the output cathode of the driving power, the 4th end of the LLC circuit is
The output negative pole of the driving power.
4. LED illumination control system according to claim 3, which is characterized in that the Boost circuit includes the first electricity
Sense, first diode, second switch, the first electrolytic capacitor, pfc circuit, the first amplifier, first resistor and first capacitor；
Wherein, the second end of first inductance is connected with the first diode anode, the cathode of the first diode with
The anode of the electrolytic capacitor is connected, and the cathode of the electrolytic capacitor is connected with one end of the second switch, and described second
The other end of switching tube is connected with the second end of the inductance, and the control terminal of the second switch is defeated with the pfc circuit
Outlet is connected, and the input terminal of the pfc circuit is connected with the output end of first amplifier, and the positive input of the amplifier is used
In receiving the first reference voltage, the reverse input end of the amplifier respectively with the cathode of the first diode and first electricity
The anode of appearance is connected, and the cathode of the first capacitor is connected with the first end of the first resistor, and the second of the first resistor
End is connected with the output end of the amplifier；
The first end of first inductance is the first end of the Boost circuit, and one end of the second switch is described
The second end of Boost circuit, the cathode of the first diode are the third end of the Boost circuit, the first electrolysis electricity
The cathode of appearance is the 4th end of the Boost circuit.
5. LED illumination control system according to claim 3, which is characterized in that the LLC circuit includes third switch
Pipe, the 4th switching tube, the second inductance, the second capacitor, transformer, the second diode, third diode, the second electrolytic capacitor,
Two amplifiers, second resistance, third capacitor and for controlling three switching tube and the 4th switching tube alternate conduction or shutdown
Control circuit；
Wherein, the control terminal of the third switching tube is connected with the first end of the control circuit, and the one of the third switching tube
End is connected with one end of the 4th switching tube, the second end phase of the control terminal and the control circuit of the 4th switching tube
Even, the first end of second inductance is connected with one end of the third switching tube, the second end of second inductance with it is described
The first end of transformer is connected, and the other end of the 4th switching tube is connected with the anode of second capacitor, second electricity
The cathode of appearance is connected with the second end of the transformer, the positive phase at the third end of the transformer and second diode
Even, the 4th end of the transformer is connected with the anode of the third diode, the cathode of the third diode and described the
The cathode of two diodes is connected, and the 5th end of the transformer is connected with the cathode of second electrolytic capacitor, second electricity
The anode of solution capacitor is connected with the cathode of second diode, and the third end of the control circuit is defeated with second amplifier
Outlet is connected, and the positive input of second amplifier is for receiving the second reference voltage, the reversed input of second amplifier
End is connected with the cathode of the anode of the third capacitor and second diode respectively, the cathode of the third capacitor with it is described
The first end of second resistance is connected, and the second end of the second resistance is connected with the output end of second amplifier；
The other end of the third switching tube is the first end of the LLC circuit, and the other end of the 4th switching tube is described
The second end of LLC circuit, the third end of the just extremely described LLC circuit of second electrolytic capacitor, second electrolytic capacitor
Cathode be the LLC circuit the 4th end.
6. LED illumination control system according to claim 1, which is characterized in that further include being opened for controlling described first
The electric current for closing pipe is in the current-limiting circuit of preset value.
7. LED illumination control system according to claim 6, which is characterized in that the current-limiting circuit includes third amplifier
And 3rd resistor；
Wherein, the output end of the third amplifier is connected with the control terminal of the first switch tube, the forward direction of the third amplifier
Input terminal is connected with the controller, the reverse input end of the third amplifier respectively with one end of the first switch tube and institute
The first end for stating 3rd resistor is connected, and the second end of the 3rd resistor is connected with the output negative pole of the driving power, described
The other end of first switch tube is connected with one end of the LED illumination lamp group, the other end of the LED illumination lamp group and the drive
The output cathode of dynamic power supply is connected；
Alternatively, the output end of the third amplifier is connected with the control terminal of the first switch tube, the forward direction of the third amplifier
Input terminal is connected with the controller, the reverse input end of the third amplifier respectively with one end of the first switch tube and institute
The first end for stating 3rd resistor is connected, and the second end of the 3rd resistor is connected with one end of the LED illumination lamp group, described
The other end of LED illumination lamp group is connected with the output negative pole of the driving power, the other end of the first switch tube with it is described
The output cathode of driving power is connected.
8. LED illumination control system according to claim 6, which is characterized in that the current-limiting circuit is specially IGBT.
9. LED illumination control system according to claim 6, which is characterized in that the current-limiting circuit is specially metal-oxide-semiconductor.
10. LED illumination control system according to any one of claims 1 to 9, which is characterized in that the controller includes:
For the conducting according to all first switch tubes in target plant factory described in default control rule alternating or Interleaved control
Or the operation controller of shutdown.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109814456A (en) * | 2019-02-01 | 2019-05-28 | 四维生态科技（杭州）有限公司 | A kind of LED illumination control system of plant factor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814456A (en) * | 2019-02-01 | 2019-05-28 | 四维生态科技（杭州）有限公司 | A kind of LED illumination control system of plant factor |
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