CN210958891U - Multi-output control circuit for LED plant light supplement lamp - Google Patents
Multi-output control circuit for LED plant light supplement lamp Download PDFInfo
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- CN210958891U CN210958891U CN201921383807.2U CN201921383807U CN210958891U CN 210958891 U CN210958891 U CN 210958891U CN 201921383807 U CN201921383807 U CN 201921383807U CN 210958891 U CN210958891 U CN 210958891U
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Abstract
The utility model relates to a circuit control technique aims at providing a multiplexed output control circuit for LED plant light filling lamp. The circuit comprises an LED driver, a plurality of paths of LED modules and a control and drive module, wherein the control and drive module is used for dividing the output of the LED driver into a plurality of paths so as to supply power to each LED module; the control and drive module comprises a control circuit and a plurality of drive circuit-switching tube combinations, wherein each drive circuit-switching tube combination comprises a drive circuit and a switching tube; each LED module is matched with a driving circuit-switching tube combination. The utility model can expand the output of the LED driver from one path to multiple paths to connect a plurality of LED modules; the user can choose to use multiple modules at a time, or simultaneously through PWM control. The LED driver is matched with the plurality of LED modules, so that light waves with proper wavelengths can be output at different growth stages of plants, and the growth and development of the plants are accelerated. On the premise of keeping the plant illumination effect, the cost can be reduced, and the utilization rate of the LED driver can be improved.
Description
Technical Field
The utility model relates to a circuit control technique, in particular to a multiplexed output control circuit for LED plant light filling lamp.
Background
The light is converted into organic energy through photosynthesis in the plant body for growth and propagation. Thus, light exposure has an important role in the growth and outcome of plants. Plants generally rely on chlorophyll in the leaves to absorb the illuminating light, which is very sensitive to blue light at wavelengths of 400nm to 500nm and red light at wavelengths of 600nm to 700 nm. Light of different wavelengths has different effects on different plants and even the wavelength of light required at different growth stages of a plant is different. Generally, blue light is suitable for the growth of branches and leaves of plants in the early stage, and red light has a better effect on promoting flowering and fruiting of the plants. Therefore, many users hope to have a lamp capable of adjusting the wavelength of output light according to each stage of plant growth to achieve the optimal light supplement effect.
The LED plant light filling lamp in the current market basically has the following advantages and disadvantages: (1) a single red light or blue light LED module is adopted, all red light or blue light is output, the cost is low, and the output wavelength is single; (2) the blue light LED module and the red light LED module are adopted to output red and blue light, but the power ratio of the red and blue light is not adjustable, the cost is low, and double-color wavelength can be output but cannot be adjusted; (3) the blue light LED module and the red light LED module are adopted to output red and blue light, the power proportion of the red and blue light is adjustable, double-color wavelength can be output, but 2 LED drivers are often needed, or one driver has 2 paths of output, and the cost is high; (4) the full-spectrum LED module is adopted for full-spectrum light output, the light power output ratio of each waveband is not adjustable, the cost is low, the output wavelength is more, but a plurality of wavelengths are invalid, and the output wavelength ratio is not adjustable; (5) the full-spectrum module and a certain amount of red and blue LED modules are adopted, the power output proportion of each module is not adjustable, the cost is moderate, the output wavelength is more, the key wavelength is provided, but the proportion is not adjustable; (6) the full-spectrum module and a certain amount of red and blue LED modules are adopted, and the power output proportion of each module is adjustable. The LED driver can output various wavelengths, but more than 2 LED drivers are often needed, or one driver has multiple outputs, so that the cost is high, and the requirement on the driver is high.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is, overcome multiplexed output, defect with high costs among the prior art, provide a multiplexed output control circuit for LED plant light filling lamp to the realization will be all the way the output extension be 2 way or multiplexed output.
For solving the technical problem, the utility model discloses a solution is:
the multi-output control circuit for the LED plant light supplement lamp comprises an LED driver and a plurality of LED modules; the LED driver also comprises a control and drive module which is used for dividing the output of the LED driver into multiple paths so as to supply power to each LED module; the control and drive module comprises a control circuit and a plurality of drive circuit-switching tube combinations, wherein each drive circuit-switching tube combination comprises a drive circuit and a switching tube; each LED module is matched with a driving circuit-switching tube combination.
The utility model discloses in, multichannel LED module indicates 2 at least way LED modules.
In the utility model, each LED module is connected in series with the matched switch tube and then connected in parallel between two output ends of the LED driver; in each driving circuit-switching tube combination, one end of the driving circuit is connected with the signal input end of the switching tube, and the other end of the driving circuit is connected to the control circuit.
In the utility model, each LED module is connected to two output ends of the LED driver after being connected in series; in each driving circuit-switching tube combination, the switching tubes are connected in parallel at two ends of the corresponding LED module, one end of the driving circuit is connected with the signal input end of the switching tube, and the other end of the driving circuit is connected to the control circuit.
The utility model discloses in, the switch tube is MOSFET switch tube, IGBT switch tube or triode.
The utility model discloses in, the component mode of multichannel LED module is following arbitrary one:
(1) the LED module comprises a blue spectrum LED module and a red spectrum LED module;
(2) the LED module comprises a blue spectrum LED module, a red spectrum LED module and an ultraviolet spectrum LED module;
(3) the LED module comprises a blue spectrum LED module, a red spectrum LED module and a full spectrum LED module;
(4) the LED module comprises a blue spectrum LED module and a full spectrum LED module;
(5) the LED module comprises a red spectrum LED module and a full spectrum LED module;
(6) the LED module comprises an ultraviolet spectrum LED module and a full spectrum LED module.
The light-emitting wavelength of the blue spectrum LED module is 400 nm-500 nm; the light-emitting wavelength of the red spectrum LED module is 600 nm-700 nm; the light-emitting wavelength of the ultraviolet spectrum LED module is 260 nm-400 nm; the light-emitting wavelength of the full-spectrum LED module is the combination of a plurality of color spectrums, and the wavelength range of the full-spectrum LED module is 260 nm-780 nm.
Compared with the prior art, the utility model has the technical effects that:
1. the general LED driver only outputs one path and can only be connected with the fixed LED modules, the utility model can expand the output of the LED driver from one path to multiple paths and can be connected with a plurality of LED modules; the user can choose to use multiple modules at a time, or simultaneously through PWM control.
2. The light with different wavelengths has different growth stimulation effects on different plants, and the wavelengths of the light required in different growth stages of the plants are different. Generally, blue light is suitable for the growth of branches and leaves of plants in the early stage, and red light has a better effect on promoting flowering and fruiting of the plants. The LED driver with the multi-output function is matched with the plurality of LED modules, so that light waves with proper wavelengths can be output at different growth stages of plants, and the growth and development of the plants are accelerated.
3. Compare the plant lighting mode who adopts a plurality of LED drivers to cooperate a plurality of LED modules, only use a LED driver to add the mode of a plurality of LED modules of extension output cooperation, under the prerequisite that keeps the effect of plant lighting, can reduce cost, improve the utilization ratio of LED driver.
Drawings
Fig. 1 is the utility model discloses in to multichannel LED module's multiplexed output control principle sketch.
FIG. 2 is a schematic circuit diagram of parallel LED modules;
fig. 3 is a schematic diagram of LED modules connected in series.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, the multi-output control circuit for the LED plant light supplement lamp of the present invention includes an LED driver and a multi-LED module (at least 2 paths); the LED driver also comprises a control and drive module which is used for dividing the output of the LED driver into multiple paths so as to supply power to each LED module. The multi-path LED module is formed in any one of the following modes: (1) the LED module comprises a blue spectrum LED module and a red spectrum LED module; (2) the LED module comprises a blue spectrum LED module, a red spectrum LED module and an ultraviolet spectrum LED module; (3) the LED module comprises a blue spectrum LED module, a red spectrum LED module and a full spectrum LED module; (4) the LED module comprises a blue spectrum LED module and a full spectrum LED module; (5) the LED module comprises a red spectrum LED module and a full spectrum LED module; (6) the LED module comprises an ultraviolet spectrum LED module and a full spectrum LED module. The light-emitting wavelength of the blue spectrum LED module is 400 nm-500 nm; the light-emitting wavelength of the red spectrum LED module is 600 nm-700 nm; the light-emitting wavelength of the ultraviolet spectrum LED module is 260 nm-400 nm; the light-emitting wavelength of the full-spectrum LED module is the combination of a plurality of color spectrums, and the wavelength range of the full-spectrum LED module is 260 nm-780 nm.
As shown in fig. 2 and 3, the control and driving module of the present invention includes a control circuit and a plurality of driving circuit-switch tube combinations, each of which includes a driving circuit and a switch tube; each LED module is matched with a driving circuit-switching tube combination. The switch tube can be selected from a MOSFET switch tube, an IGBT switch tube or a triode.
In fig. 2, each LED module is connected in series with its matched switching tube, and then connected in parallel between two output terminals of the LED driver; in each driving circuit-switching tube combination, one end of the driving circuit is connected with the signal input end of the switching tube, and the other end of the driving circuit is connected to the control circuit. The LED driver is a constant-current LED driver, and generally, when the rated voltage difference of each LED module is not more than 50%, the control effect is good (for example, the rated voltage of the module 1 is 48V, and the voltage range of the module 2 is 24V-96V). When the rated voltage of each LED module has a large difference, a large deviation exists between the current distribution (power distribution) and the PWM duty ratio, and it may need to be corrected according to actual conditions. Each LED module is connected with a switching tube (such as MOSFET, IGBT, triode and the like) in series, and the control circuit controls the switching of each switching tube. The control circuit controls the conduction time of the switch tube connected with each LED module in series, and then controls the power and the average current of each LED module.
In fig. 3, each LED module is connected to two output terminals of the LED driver after being connected in series; in each driving circuit-switching tube combination, the switching tubes are connected in parallel at two ends of the corresponding LED module, one end of the driving circuit is connected with the signal input end of the switching tube, and the other end of the driving circuit is connected to the control circuit. The constant-current LED driver is adopted, the rated voltage of each LED module does not make a requirement, as long as the LED driver can work normally, the control circuit controls the switch of each switch tube, controls the conduction time of the switch tubes connected with each LED module in parallel, and further controls the power and the average current of each LED module.
Following to utilizing the utility model discloses a multiplexed output control circuit removes the method of realizing the multiplexed output control of LED plant light filling lamp, describes as follows:
in the first mode, one output of the LED driver is divided into multiple outputs by Pulse Width Modulation (PWM): the sum of the percentage occupied by each path of output is 100%, and the proportion of each path of output is adjusted through pulse width modulation, so that the control of each path of output power is realized.
In a second mode, one output of the LED driver is divided into multiple outputs by time-sharing driving: each path of output occupies a certain time (for example, the first path of output lasts for 10 minutes, then the second path of output lasts for 20 minutes, then the third path of output lasts for 5 minutes, and the like), only one path of output exists each time, and the time and the power of each path of output are set through the control circuit.
No matter the LED module is in a series mode or a parallel mode, the on and off of the LED module are controlled through the switch corresponding to the switch tube. The switching time may be high frequency, i.e. a commonly used PWM wave (e.g. a square wave with a switching frequency of 1 khz or more and a specific duty cycle), or low frequency (e.g. 2 hours for the module 1, 3 hours for the module 2, etc.).
The control of the multiplexed output is realized based on a control circuit, and the control circuit can be realized in various ways:
(1) manual control:
the duty ratio or the conduction time of each LED module is adjusted by toggling a switch or a knob in the control circuit;
(2) automatic control by MCU or PLC chip
A software function module is embedded in the MCU or the PLC chip, and the illumination duration, the illumination period and the red light or blue light output are set according to the plant growth period requirement; the illumination condition switching is realized by automatically controlling a switch or a knob in the control circuit; the requirements of various plants can be preset, illumination control is automatically carried out, and accurate illumination is realized in the growth period of the plants.
(3) Automatic control under wireless conditions
A software functional module is embedded into an MCU or a PLC chip, a wireless communication module is combined, and the illumination duration, the illumination period and the red light or blue light output are set according to the plant growth period requirement by using a handheld intelligent terminal or a remote control computer; the illumination condition switching is realized by the automatic control of a switch or a knob in the control circuit.
By adding a wireless module, more flexible and more optimal control can be realized. The wireless module is connected with the network server, and a user can set the light demand time period corresponding to the plant on the network and then perform wireless control. Once the planted plants are replaced, the corresponding settings can be switched immediately, and the settings can be manually adjusted and optimized. Under the conditions of power failure, module fault lamp and the like, the server can quickly inform an administrator to carry out maintenance. Can carry out organic combination with plant light filling system and greenhouse control system, obtain more plant environmental information, for example the sunlight condition, the humiture condition etc. finely tunes the plant light filling condition, optimizes the light filling effect.
Application example:
assuming a certain LED output power of 50W, by adding this device, the 50W output can be divided into two paths for the red and blue LED modules. The control device can output 50W red light, 50W blue light, or 25W red and blue light, or 40W red light, 10W blue light and the like. The proportion of the red light and the blue light can be adjusted steplessly through a controller, and the control mode can be a wireless controller or a wired controller.
According to the scheme, only 1 LED driver and 2 low-voltage switching tubes (the voltage of the LED module is generally low) and a driving circuit are used, the effect that 2 LED drivers are needed can be achieved, the cost is less than 10 yuan, the price of one LED driver is dozens to hundreds of different, and the cost is greatly reduced. And according to the number of the LED modules outputting different wavelengths, the more the number of different modules is, the larger the cost saving is.
Claims (6)
1. A multi-output control circuit for an LED plant light supplement lamp comprises an LED driver and a plurality of LED modules; the LED driver is characterized by also comprising a control and drive module which is used for dividing the output of the LED driver into multiple paths so as to supply power to each LED module; the control and drive module comprises a control circuit and a plurality of drive circuit-switching tube combinations, wherein each drive circuit-switching tube combination comprises a drive circuit and a switching tube; each LED module is matched with a driving circuit-switching tube combination.
2. The multi-output control circuit of claim 1, wherein the multi-LED module is at least 2 LED modules.
3. The multi-output control circuit of claim 1, wherein each LED module is connected in series with its matched switching tube and then connected in parallel between two output terminals of the LED driver; in each driving circuit-switching tube combination, one end of the driving circuit is connected with the signal input end of the switching tube, and the other end of the driving circuit is connected to the control circuit.
4. The multi-output control circuit of claim 1, wherein each LED module is connected in series to two output terminals of the LED driver; in each driving circuit-switching tube combination, the switching tubes are connected in parallel at two ends of the corresponding LED module, one end of the driving circuit is connected with the signal input end of the switching tube, and the other end of the driving circuit is connected to the control circuit.
5. The multi-output control circuit according to claim 1, wherein the switching tube is a MOSFET switching tube, an IGBT switching tube, or a triode.
6. The multi-output control circuit of claim 1, wherein the multi-LED module is formed in any one of the following manners:
(1) the LED module comprises a blue spectrum LED module and a red spectrum LED module;
(2) the LED module comprises a blue spectrum LED module, a red spectrum LED module and an ultraviolet spectrum LED module;
(3) the LED module comprises a blue spectrum LED module, a red spectrum LED module and a full spectrum LED module;
(4) the LED module comprises a blue spectrum LED module and a full spectrum LED module;
(5) the LED module comprises a red spectrum LED module and a full spectrum LED module;
(6) the LED module comprises an ultraviolet spectrum LED module and a full spectrum LED module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383807.2U CN210958891U (en) | 2019-08-24 | 2019-08-24 | Multi-output control circuit for LED plant light supplement lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383807.2U CN210958891U (en) | 2019-08-24 | 2019-08-24 | Multi-output control circuit for LED plant light supplement lamp |
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| CN210958891U true CN210958891U (en) | 2020-07-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493917A (en) * | 2019-08-24 | 2019-11-22 | 浙江雷培德科技有限公司 | A kind of multiple-channel output control circuit and method for LED light supplementing lamp for plants |
| CN113873724A (en) * | 2021-10-29 | 2021-12-31 | 汪玲芳 | LED vegetation lamp control circuit |
| CN114126138A (en) * | 2021-11-30 | 2022-03-01 | 广州彩熠灯光股份有限公司 | Circuit and lamp |
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2019
- 2019-08-24 CN CN201921383807.2U patent/CN210958891U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493917A (en) * | 2019-08-24 | 2019-11-22 | 浙江雷培德科技有限公司 | A kind of multiple-channel output control circuit and method for LED light supplementing lamp for plants |
| CN113873724A (en) * | 2021-10-29 | 2021-12-31 | 汪玲芳 | LED vegetation lamp control circuit |
| CN113873724B (en) * | 2021-10-29 | 2024-04-16 | 广东顺德拓昊电子电器有限公司 | LED vegetation lamp control circuit |
| CN114126138A (en) * | 2021-11-30 | 2022-03-01 | 广州彩熠灯光股份有限公司 | Circuit and lamp |
| CN114126138B (en) * | 2021-11-30 | 2023-11-21 | 广州彩熠灯光股份有限公司 | Circuit and lamp |
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