CN214851911U - Multi-protocol full-spectrum dimming power supply driving device for plant lamp - Google Patents
Multi-protocol full-spectrum dimming power supply driving device for plant lamp Download PDFInfo
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- CN214851911U CN214851911U CN202121377369.6U CN202121377369U CN214851911U CN 214851911 U CN214851911 U CN 214851911U CN 202121377369 U CN202121377369 U CN 202121377369U CN 214851911 U CN214851911 U CN 214851911U
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Abstract
The utility model discloses a power drive arrangement that full gloss register for easy reference was adjusted luminance of multiprotocol for plant lamp, include: the device comprises an alternating-current and direct-current conversion module, a constant-current module, a signal generation module and an analog signal interface; the analog signal interface is used for receiving an externally input 0-10V analog dimming signal and inputting the signal to the constant current module; the output end of the alternating direct current conversion module is respectively and electrically connected with the input end of the constant current module and the input end of the signal generation module, the alternating direct current conversion module is used for receiving external alternating current, respectively providing constant voltage and constant current input for the constant current module, and providing 5-20V direct current low voltage for the signal generation module; the signal generation module is used for receiving an external signal, converting the external signal into a PWM signal and providing an enable signal EN and the PWM signal for the constant current module; the constant current module is used for providing constant current output for the external plant lamp. The utility model can make the dimming more smooth, and can realize the compatibility of multi-protocol dimming; has wide application range; the device can be used for quantitatively supplementing light to plants according to required wavelengths.
Description
Technical Field
The utility model belongs to the power drive field especially relates to a power drive device that full gloss register for easy reference was adjusted luminance of multiprotocol for plant lamp.
Background
The full-spectrum plant lamp is used as a new generation plant light supplement light source, has the characteristics of high electro-optic conversion efficiency, environmental protection, energy conservation and the like, and along with the development of science and technology, plants can not only stop at the stage of lighting the light source, more hope that some intelligent equipment can adjust the brightness and the color of light, and then combine network management and plant growth rules to build a lighting environment suitable for plant growth. The existing full-spectrum plant lamp driving power supply is required to support the dimming function and the wireless and wired dimming modes.
However, protocols such as Dali, Zigbee, bluetooth, WiFi, 0-10V analog dimming, Track dimming, etc. currently applied to a full spectrum plant lamp driving power supply, so for manufacturers of ODM, the development cost of the full spectrum plant lamp driving power supply supporting each protocol is high, and the control manner of each is different, resulting in very many models of the full spectrum plant lamp driving power supply, but the former stage of the full spectrum plant lamp driving power supply is changed to be a later stage of DC-DC circuit, and the former stage of the AC-DC circuit is changed to be a different chip according to the power. It is worth mentioning that the Track mode is not widely applied in the current intelligent dimming occasions, and the rest protocols are divided into a PWM modulation mode and an analog modulation mode, but at present, no mode and structure for combining multiple protocols and making the protocols into a standard module are found.
For example, in a "modular LED power supply" disclosed in chinese patent CN 203934033U, input and output terminals of an AC-DC circuit and a constant current circuit included in a plurality of module LED driving power supplies are respectively connected together to realize arrangement and combination of a plurality of module LED driving power supplies with different parameters to output current and voltage parameters with different specifications, so as to solve the problem of a large variety of enterprise products, but not solve the problem of a module LED driving power supply with a combination of the current dimming protocol. Also, as the LED power platform capable of combining multiple dimming modes disclosed in chinese patent CN 103561528A, the mentioned dimming modes can be compatible with AC front and rear edge phase-cut dimming, 0-10V dimming, etc. simultaneously, and the current adjusting module D detects an external dimming signal and an output current signal to further generate a signal for controlling the output current, and since the implementation cost of this mode is far greater than the practicability, the Track dimming method is difficult to optimize in terms of electromagnetic interference. Therefore, a module full-spectrum plant lamp driving power supply which is simple in circuit structure and can support multi-protocol dimming is urgently needed in the market.
SUMMERY OF THE UTILITY MODEL
The technical purpose of the utility model is to provide a power drive arrangement that full spectrum of multiprotocol was adjusted luminance for plant lamp to obtain simply, can support the technological effect that the multiprotocol was adjusted luminance.
In order to solve the above problem, the technical scheme of the utility model is that:
a power drive apparatus for multi-protocol full spectrum dimming of plant lights, comprising: the device comprises an alternating-current and direct-current conversion module, a constant-current module, a signal generation module and an analog signal interface;
the analog signal interface is used for receiving an externally input 0-10V analog dimming signal and inputting the signal to the constant current module;
the output end of the alternating direct current conversion module is respectively and electrically connected with the input end of the constant current module and the input end of the signal generation module, the alternating direct current conversion module is used for receiving external alternating current, respectively providing constant voltage and constant current input for the constant current module, and providing 5-20V direct current low voltage for the signal generation module;
the signal generation module is used for receiving an external signal, converting the external signal into a PWM signal and providing an enable signal EN and the PWM signal for the constant current module;
the constant current module is used for providing constant current output for the external plant lamp.
Specifically, the constant current module comprises a first voltage reduction submodule, a second voltage reduction submodule, a voltage comparison submodule and a signal selection submodule;
the first voltage reduction submodule is used for receiving an analog signal of the analog signal interface, reducing the voltage value of the received analog signal to 1/5 and outputting the voltage value;
the output end of the first voltage reduction submodule is in signal connection with the input ends of the voltage comparison submodule and the signal selection submodule respectively, the voltage comparison submodule is used for outputting threshold voltages of analog dimming and PWM dimming to control the signal selection submodule so as to adjust the output of the second voltage reduction submodule, and the signal selection submodule is also used for receiving an analog signal output by the first voltage reduction submodule, converting the analog signal into a PWM signal and outputting the PWM signal;
the second voltage reduction sub-module is used for receiving the PWM signal of the signal selection sub-module and selecting a corresponding output mode based on the threshold voltage output by the voltage comparison sub-module so as to provide constant current output for the external plant lamp.
Specifically, the first voltage reduction submodule comprises a first resistor, a second resistor and a first operational amplifier;
the positive input end of the first voltage reduction sub-module is electrically connected with one end of a first resistor, the other end of the first resistor is electrically connected with one end of a second resistor and the inverting input end of a first operational amplifier, the positive phase input end of the first operational amplifier is electrically connected with the negative input end and the grounding end of the first voltage reduction sub-module, and the output end of the first operational amplifier is electrically connected with the other end of the second resistor, the input end of the voltage comparison sub-module and the input end of the signal selection sub-module.
Specifically, the voltage comparison submodule comprises a third resistor, a first threshold voltage sampling resistor, a second threshold voltage sampling resistor and a second operational amplifier;
one end of the third resistor is electrically connected with the output end of the first voltage reduction submodule, the other end of the third resistor is electrically connected with the inverting input end of the second operational amplifier, the positive phase input end of the second operational amplifier is electrically connected with the grounding end through the first threshold voltage sampling resistor, and the output end of the second operational amplifier is electrically connected with the power supply end through the second threshold voltage sampling resistor.
Specifically, the signal selection submodule comprises a single-chip microcontroller, a first triode, a second triode and a third triode;
the collector of the first triode is respectively and electrically connected with the output end of the first voltage reduction submodule and the single chip microcontroller, the base of the first triode is electrically connected with the output end of the voltage comparison submodule, and the emitter of the first triode is electrically connected with the second voltage reduction submodule;
the collector of the second triode is electrically connected with the single-chip microcontroller, the base of the second triode is electrically connected with the output end of the voltage comparison submodule, and the emitter of the second triode is electrically connected with the PWM signal input end of the signal generation module;
the collector electrode of the third triode is electrically connected with a power supply end, the base electrode of the second triode is electrically connected with the output end of the voltage comparison submodule and the EN signal input end of the signal generation module respectively, and the emitter electrode of the second triode is electrically connected with the emitter electrode of the first triode.
Specifically, the second voltage reduction submodule is a Buck voltage reduction circuit which comprises a current-limiting sampling resistor, an MOS (metal oxide semiconductor) tube, a power inductor, a capacitor, a freewheeling diode and a Buck constant-current full-spectrum plant lamp driving chip;
the positive input end of the second voltage reduction sub-module is respectively electrically connected with the ground end and one end of a current-limiting sampling resistor, the other end of the current-limiting sampling resistor is respectively electrically connected with the Buck constant-current full-spectrum plant lamp driving chip and the source electrode of the MOS tube, the grid electrode of the MOS tube is electrically connected with the Buck constant-current full-spectrum plant lamp driving chip, the drain electrode of the MOS tube is respectively electrically connected with the power inductor and the positive electrode end of the fly-wheel diode, the other end of the power inductor is electrically connected with the negative output end of the second voltage reduction sub-module, the negative electrode end of the fly-wheel diode is respectively electrically connected with the negative input end of the second voltage reduction sub-module and the positive output end of the second voltage reduction sub-module, one end of the capacitor is electrically connected with the Buck constant-current full-spectrum plant lamp driving chip, and the other end of the capacitor is respectively electrically connected with the negative input end of the second voltage reduction sub-module and the positive output end of the second voltage reduction sub-module;
the Buck constant-current full-spectrum plant lamp driving chip is also electrically connected with a PWM signal input end of the signal generation module, an emitting electrode of the second triode and an emitting electrode of the first triode respectively.
The signal generation module comprises a Bluetooth chip, a wifi chip, a Zigbee, a 2.4G wireless chip and a power carrier chip, and is used for receiving external wireless or wired signals, converting the external wireless or wired signals into PWM signals and providing enable signals EN and the PWM signals for the constant current module.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
1) the utility model discloses a set up a plurality of operational amplifiers, monolithic microcontroller and peripheral circuit in the constant current module can convert the dimming signal of 0 to 10V of input into distinguishable simulation dimming signal and PWM signal, convert the low-voltage signal of 0 to 10V analog signal into PWM signal and improve the degree of depth that adjusts luminance of simulation dimming, make when adjusting luminance more level and smooth;
2) the utility model can receive external PWM signal, or 0-10V analog signal, or PWM signal generated by the signal generation module to realize the compatibility of multi-protocol dimming by switching on and off the triode arranged in the constant current module;
3) the constant current module is a standard 8-pin input/output pin, can be directly placed in AC-DC (alternating current-direct current) preceding-stage circuits with other powers as a standard module, reduces the research and development time and cost of different dimming products, and has excellent application adaptability;
4) the utility model discloses set for different modes to the growth habit of different plants, according to the characteristics in the different growth stages of plant, realize the wavelength ration light filling as required to the plant.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
Fig. 1 is a schematic diagram of an overall framework of a power driving apparatus for multi-protocol full spectrum dimming of plant lamps according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a constant current module according to an embodiment of the present invention;
fig. 3 is a pin diagram of the constant current module according to an embodiment of the present invention.
Description of the reference numerals
101: an AC-DC conversion module; 102: a signal generation module; 103: an analog signal interface; 104: a constant current module; r1: a first resistor; r2: a second resistor; r3: a third resistor; u1: the Buck constant-current full-spectrum plant lamp driving chip is used for driving the Buck constant-current full-spectrum plant lamp; u2: a first operational amplifier; u3: a second operational amplifier; u4: a single chip microcontroller; q1: a first triode; q2: a second triode; q3: a third triode; q4: an MOS tube; RF 1: a first threshold voltage sampling resistor; RF 2: a second threshold voltage sampling resistor; RCS: a current-limiting sampling resistor; c1: a capacitor; l1: a power inductor; d1: a freewheeling diode.
Detailed Description
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
The power driving apparatus for multi-protocol full spectrum dimming of plant lamps according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.
Examples
Referring to fig. 1, the present embodiment provides a power driving apparatus for multi-protocol full spectrum dimming of plant lamps, including: the device comprises an alternating current-direct current conversion module 101, a signal generation module 102, an analog signal interface 103 and a constant current module 104.
The output end of the alternating-direct current conversion module 101 is electrically connected with the input end of the constant current module 104 and the input end of the signal generation module 102, respectively, and the alternating-direct current conversion module 101 is used for receiving external alternating current, providing constant voltage and constant current input for the constant current module 104, and providing 5-20V direct current low voltage for the signal generation module 102.
The analog signal interface 103 is used for receiving an externally input 0-10V analog dimming signal and inputting the signal to the constant current module 104; the signal generating module 102 includes a bluetooth chip, a wifi chip, a Zigbee, a 2.4G wireless chip, a power line carrier chip, and the like inside, and is configured to receive an external wireless or wired signal, convert the external wireless or wired signal into a PWM signal, and provide an enable signal EN and the PWM signal to the constant current module 104.
The constant current module 104 is used for receiving the electric signals of other modules and interfaces, then processing the signals and providing constant current output for the plant lamp electrically connected with the constant current module.
Referring to fig. 2, in the present embodiment, the constant current module 104 further includes a first voltage reduction sub-module, a second voltage reduction sub-module, a voltage comparison sub-module, and a signal selection sub-module.
The first voltage reduction sub-module is configured to receive an analog dimming signal of 0 to 10V input from the outside through the analog signal interface 103, and reduce a voltage value of the analog dimming signal to 1/5 before input, and output the reduced voltage signal, specifically, a DIM + terminal and a DIM-terminal of the first voltage reduction sub-module are a positive input terminal and a negative input terminal of the analog dimming signal, respectively; the output end of the first voltage reduction submodule is in signal connection with the input ends of the voltage comparison submodule and the signal selection submodule respectively.
The first voltage reduction submodule comprises a first resistor R1, a second resistor R2 and a first operational amplifier U2.
Referring to fig. 2, the analog dimming signal enters the first buck sub-module through the DIM + terminal, and then the signal is input to the inverting input terminal of the first operational amplifier U2 through the first resistor R1, wherein the non-inverting input terminal of the first operational amplifier U2 is electrically connected to the DIM-terminal and the ground terminal, respectively. The terminal Vout1 of the first operational amplifier U2 is an output terminal, the output signal is divided into a plurality of branches, in one branch, the signal returns to its own inverting input terminal through the second resistor R2 to realize negative feedback, and the signals in the other two branches are respectively input to the voltage comparison submodule and the signal selection submodule. In addition, the positive power supply end of the first operational amplifier U2 is externally connected with a 5V power supply, and the negative power supply end is grounded.
Specifically, the first voltage-reducing submodule is a voltage-reducing circuit, and the output voltage Vout1/DIM + ═ R2/R1, where R2/R1 equals 5, and the input signal of 0 to 10V will become 0.2V to 2V, as shown in table 1 below
TABLE 1
Referring to fig. 2, the voltage comparison sub-module is used to output the threshold voltage of the analog dimming, PWM dimming to control the output of the second buck sub-module.
Specifically, the voltage comparison submodule includes a third resistor R3, a first threshold voltage sampling resistor RF1, a second threshold voltage sampling resistor RF2, and a second operational amplifier U3.
After entering the voltage comparison submodule, the signal is input to the inverting input terminal of the second operational amplifier U3 through the third resistor R3, and the non-inverting input terminal of the second operational amplifier U3 is electrically connected to the ground terminal through the first threshold voltage sampling resistor RF 1. The Vout2 terminal of the second operational amplifier U3 is an output terminal, the output terminal of the second operational amplifier U3 is connected in parallel with the second threshold voltage sampling resistor RF2 and the first triode Q1 in the signal selection sub-module, and the second threshold voltage sampling resistor RF2 is also electrically connected with an external 5V power supply. In addition, the positive power supply end of the second operational amplifier U3 is externally connected with a 5V power supply, and the negative power supply end is grounded.
Referring to fig. 2, the signal selection sub-module is configured to receive the analog signal output by the first voltage-reducing sub-module, convert the analog signal into a PWM signal, and output the PWM signal, and further configured to select a signal output mode of the second voltage-reducing sub-module.
Specifically, the signal selection submodule comprises a single-chip microcontroller U4, a first triode Q1, a second triode Q2 and a third triode Q3.
The signal is transmitted into the signal selection submodule and then respectively transmitted into a c electrode (collector electrode) of the first triode Q1 and a signal input end (ADC) of the single-chip microcontroller U4, and the single-chip microcontroller U4 converts the received signal into a PWM signal and then outputs the PWM signal from a signal output Port (PWMO) and inputs the PWM signal into a c electrode of the second triode Q2. Three transistors are now described, wherein the first transistor Q1 is an NPN transistor, and the second transistor Q2 and the third transistor Q3 are PNP transistors. The b pole (base) of the first triode Q1 is electrically connected with the output end of the second operational amplifier U3, and the e pole (emitter) of the first triode Q1 is electrically connected with a chip in the second buck sub-module; the b pole of the second triode Q2 is also electrically connected with the output end of the second operational amplifier U3, and the e pole and the second voltage reduction submodule are respectively electrically connected with the chip of the second voltage reduction submodule and the PWM signal input end of the second voltage reduction submodule; the c pole of the third triode Q3 is electrically connected with a 5V power supply, the b pole of the third triode Q3 is electrically connected with the output end of the second operational amplifier U3 and the EN signal input end of the second voltage reduction submodule respectively, and the e pole of the third triode Q3 is electrically connected with the e pole of the first triode Q1 and the chip of the second voltage reduction submodule respectively.
Specifically, the ADC of the monolithic microcontroller U4 is 10 bits, the PWM bit width is 12 bits, and when the output voltage Vout1 of the first buck sub-module is 0.2-0.4V, the corresponding PWM signal output signals are as shown in table 2 below
TABLE 2
Further, assuming that the threshold voltage of the voltage comparison submodule is set to 0.4V, when the output voltage of the Vout1 end of the first voltage reduction submodule is lower than the threshold voltage, namely 0.2V to 0.4V, the Vout2 end of the voltage comparison submodule outputs low level to control Q1 to be turned off, Q2 to be turned on, and Q3 to be turned on, the monolithic microcontroller U4 converts the analog signal output by the Vout1 end into a PWM signal, so that the Buck constant-current full-spectrum plant lamp driving chip U1 enters a PWM dimming mode, similarly, when the input voltage is higher than the threshold voltage, the Vout2 end of the voltage comparison submodule outputs high level to control Q1 to be turned on, Q2 to be turned off, and Q3 to be turned off, and the PWM signal output by the monolithic microcontroller U4 is turned off, so that the Buck constant-current full-spectrum plant lamp driving chip U1 enters an LD analog dimming mode;
in addition, when the enable signal EN input to the constant current module 104 by the signal generating module 102 turns on the control Q3, the Buck constant-current full-spectrum plant lamp driving chip U1 enters the PWM dimming mode, and receives the PWM signal of the signal generating module 102.
Referring to fig. 2, the second voltage-reducing sub-module is configured to receive the PWM signal of the signal selection sub-module and select a corresponding output mode based on the threshold voltage output by the voltage comparison sub-module, so as to provide a constant current output to the external plant lamp.
Specifically, the second voltage reduction submodule is a Buck voltage reduction circuit, and the second voltage reduction submodule comprises a current-limiting sampling resistor RCS, a MOS tube Q4, a power inductor L1, a capacitor C1, a freewheeling diode D1 and a Buck constant-current full-spectrum plant lamp driving chip U1, wherein the MOS tube Q4 is an N-channel MOS tube.
The second voltage-reducing submodule has 4 signal input ends, including a PWM signal input end, an EN signal input end, a VIN + end, and a VIN-end, where the PWM signal input end is used to receive a PWM signal output by the signal generation module 102, the EN signal input end is used to receive a PWM signal output by the signal generation module 102, and the VIN + end and the VIN-end are used to receive a constant-voltage and constant-current signal output by the alternating direct-current conversion module 101. The PWM signals input by the PWM signal input end are respectively input to the e pole of the second triode Q2 and the PWM end of the Buck constant-current full-spectrum plant lamp driving chip U1. The EN signal input terminals are electrically connected to the b-poles of the first transistor Q1, the second transistor Q2, and the third transistor Q3, respectively. Signals input from the VIN + end are respectively input to the VVD end of the Buck constant-current full-spectrum plant lamp driving chip U1 to supply power to the chip, the capacitor C1, the negative electrode of the freewheeling diode D1 and the LED + end of the second voltage reduction submodule, namely the output end, wherein the signals are released in a grounding mode after passing through the capacitor C1, the signals are input to the power inductor L1 after passing through the freewheeling diode D1, and the positive electrode of the freewheeling diode D1 is electrically connected with the drain electrode of the MOS transistor Q4. The power inductor L1 is used for storing energy, and a signal passes through the power inductor L1 and is output from the LED-terminal of the second buck sub-module, i.e., the other output terminal. The grid electrode of the MOS tube Q4 is connected with the GATE end of the Buck constant-current full-spectrum plant lamp driving chip U1, the source electrode of the MOS tube Q4 is electrically connected with the CS end of the Buck constant-current full-spectrum plant lamp driving chip U1 and one end of the current-limiting sampling resistor RCS respectively, and the other end of the current-limiting sampling resistor RCS is grounded and is electrically connected with the VIN end.
Finally, referring to fig. 3, the external of the constant current module 104 used in the present embodiment is provided with a standard 8-pin input/output pin.
The embodiment of the example is:
when an analog signal input interface is used, the signal generation module does not output signals, the analog signals firstly pass through a first voltage reduction sub-module in the constant current module, the output voltage is sent to an ADC (analog to digital converter) interface of a single chip microcontroller U4 in the signal selection sub-module on one hand, and is sent to a voltage comparison sub-module serving as a voltage comparator on the other hand, the voltage comparison sub-module controls the high level or the low level output by a Vout2 end of the voltage comparison sub-module by judging whether the voltage is higher than or lower than the set threshold voltage, and the high level or the low level output by a Vout2 end controls the connection and disconnection of Q1, Q2 and Q3, so that the switching of the analog dimming mode and the PWM dimming mode of the Buck constant-current spectrum plant lamp driving chip U1 is realized.
When the signal generation module is used, an enable signal EN of the signal generation module controls Q2 to be conducted to enter a PWM dimming mode, and a dimming signal required by the Buck constant-current full-spectrum plant lamp driving chip is provided to a PWM signal input end by the signal generation module.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (7)
1. A power driver apparatus for multi-protocol full spectrum dimming of plant lights, comprising: the device comprises an alternating-current and direct-current conversion module, a constant-current module, a signal generation module and an analog signal interface;
the analog signal interface is used for receiving an externally input 0-10V analog dimming signal and inputting the signal to the constant current module;
the output end of the alternating direct current conversion module is electrically connected with the input end of the constant current module and the input end of the signal generation module respectively, the alternating direct current conversion module is used for receiving external alternating current, providing constant voltage and constant current input for the constant current module respectively, and providing 5-20V direct current low voltage for the signal generation module;
the signal generation module is used for receiving an external signal, converting the external signal into a PWM signal and providing an enable signal EN and the PWM signal for the constant current module;
the constant current module is used for providing constant current output for the external plant lamp.
2. The power driving apparatus for multi-protocol full spectrum dimming of plant lamps according to claim 1, wherein the constant current module comprises a first voltage-reducing sub-module, a second voltage-reducing sub-module, a voltage comparison sub-module and a signal selection sub-module;
the first voltage reduction submodule is used for receiving the analog signal of the analog signal interface, reducing the voltage value of the received analog signal to 1/5 and outputting the voltage value;
the output end of the first voltage reduction sub-module is respectively in signal connection with the input ends of the voltage comparison sub-module and the signal selection sub-module, the voltage comparison sub-module is used for outputting threshold voltages of analog dimming and PWM dimming to control the signal selection sub-module so as to adjust the output of the second voltage reduction sub-module, and the signal selection sub-module is also used for receiving analog signals output by the first voltage reduction sub-module, converting the analog signals into PWM signals and outputting the PWM signals;
the second voltage reduction submodule is used for receiving the PWM signal of the signal selection submodule and selecting a corresponding output mode based on the threshold voltage output by the voltage comparison submodule so as to provide constant current output for the external plant lamp.
3. The power driver apparatus of claim 2, wherein the first voltage-dropping submodule comprises a first resistor, a second resistor, and a first operational amplifier;
the positive input end of the first voltage reduction sub-module is electrically connected with one end of the first resistor, the other end of the first resistor is electrically connected with one end of the second resistor and the inverting input end of the first operational amplifier, the positive input end of the first operational amplifier is electrically connected with the negative input end and the grounding end of the first voltage reduction sub-module, and the output end of the first operational amplifier is electrically connected with the other end of the second resistor, the input end of the voltage comparison sub-module and the input end of the signal selection sub-module.
4. The power driver apparatus of claim 2, wherein the voltage comparison submodule comprises a third resistor, a first threshold voltage sampling resistor, a second threshold voltage sampling resistor, and a second operational amplifier;
one end of the third resistor is electrically connected with the output end of the first voltage reduction submodule, the other end of the third resistor is electrically connected with the inverting input end of the second operational amplifier, the non-inverting input end of the second operational amplifier is electrically connected with the grounding end through the first threshold voltage sampling resistor, and the output end of the second operational amplifier is electrically connected with the power supply end through the second threshold voltage sampling resistor.
5. The power driver apparatus of claim 2, wherein the signal selection submodule comprises a single-chip microcontroller, a first transistor, a second transistor, and a third transistor;
a collector of the first triode is electrically connected with the output end of the first voltage reduction submodule and the single-chip microcontroller respectively, a base of the first triode is electrically connected with the output end of the voltage comparison submodule, and an emitter of the first triode is electrically connected with the second voltage reduction submodule;
a collector electrode of the second triode is electrically connected with the single-chip microcontroller, a base electrode of the second triode is electrically connected with an output end of the voltage comparison submodule, and an emitting electrode of the second triode is electrically connected with a PWM signal input end of the signal generation module;
and the collector electrode of the third triode is electrically connected with a power supply end, the base electrode of the second triode is electrically connected with the output end of the voltage comparison submodule and the EN signal input end of the signal generation module respectively, and the emitter electrode of the second triode is electrically connected with the emitter electrode of the first triode.
6. The power driving apparatus for multi-protocol full-spectrum dimming of plant lamps according to claim 5, wherein the second voltage-reducing submodule is a Buck voltage-reducing circuit comprising a current-limiting sampling resistor, a MOS transistor, a power inductor, a capacitor, a freewheeling diode and a Buck constant-current full-spectrum plant lamp driving chip;
the positive input end of the second voltage-reducing submodule is respectively electrically connected with the ground end and one end of the current-limiting sampling resistor, the other end of the current-limiting sampling resistor is respectively electrically connected with the Buck constant-current full-spectrum plant lamp driving chip and the source electrode of the MOS tube, the grid electrode of the MOS tube is electrically connected with the Buck constant-current full-spectrum plant lamp driving chip, the drain electrode of the MOS tube is respectively electrically connected with the power inductor and the positive electrode end of the freewheeling diode, the other end of the power inductor is electrically connected with the negative output end of the second voltage-reducing submodule, the negative electrode end of the freewheeling diode is respectively electrically connected with the negative input end of the second voltage-reducing submodule and the positive output end of the second voltage-reducing submodule, one end of the capacitor is electrically connected with the Buck constant-current full-spectrum plant lamp driving chip, and the other end of the capacitor is respectively electrically connected with the negative input end of the second voltage-reducing submodule, the positive output end of the second voltage-reducing submodule, The positive output end of the second voltage reduction submodule is electrically connected;
the Buck constant-current full-spectrum plant lamp driving chip is further electrically connected with a PWM signal input end of the signal generation module, an emitting electrode of the second triode and an emitting electrode of the first triode respectively.
7. The power driving apparatus for multi-protocol full spectrum dimming of plant lamps as claimed in claim 1, wherein the signal generating module comprises a bluetooth chip, a wifi chip, a Zigbee, a 2.4G wireless chip and a power carrier chip, and is configured to receive an external wireless or wired signal, convert the external wireless or wired signal into a PWM signal, and provide the enable signal EN and the PWM signal to the constant current module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121377369.6U CN214851911U (en) | 2021-06-21 | 2021-06-21 | Multi-protocol full-spectrum dimming power supply driving device for plant lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121377369.6U CN214851911U (en) | 2021-06-21 | 2021-06-21 | Multi-protocol full-spectrum dimming power supply driving device for plant lamp |
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