CN105333335A - Three-wire colorful LED lamp strip - Google Patents
Three-wire colorful LED lamp strip Download PDFInfo
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- CN105333335A CN105333335A CN201510788620.0A CN201510788620A CN105333335A CN 105333335 A CN105333335 A CN 105333335A CN 201510788620 A CN201510788620 A CN 201510788620A CN 105333335 A CN105333335 A CN 105333335A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
- F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
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- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a three-wire colorful LED lamp strip. The three-wire colorful LED lamp strip comprises a power supply plug, an input power supply wire, a controller, an output power supply wire and a lamp strip body electrically connected in sequence, wherein functional keys are arranged on the controller; three parallel main leads S1, S2 and S3, a single-color LED lamp string and a double-color LED lamp string are arranged in the lamp strip body; the single-color LED lamp string R is connected between the main leads S1 and S2; the double-color LED lamp string is connected between the main leads S2 and S3, and is serially connected by multiple double-color LED sets; and two LED base colors contained in the double-color LED sets and an LED color of the single-color LED lamp string are formed to a three-color combination. The LED lamp strip is formed by matching three main leads with a nonpolar blue-green double-color LED lamp string and a red LED lamp string, reduces one main wire compared with a traditional lamp string having four wires, simplifies the production process, saves the internal space, and reduces the manufacturing cost.
Description
Technical field
The present invention relates to LED, particularly a kind of three line colorful LED lamp bands.
Background technology
As shown in Figure 1, for four line three-primary color LED light bar of traditional structure, in four lines, one is common wire, its excess-three bar is opposite polarity main line with common wire, red LED lamp string (R) is set between common wire and three main clues respectively, green light LED lamp string (G) and blue LED lamp string (B), the conducting controlled between common wire and three main clues by controller realizes red LED lamp string (R) with disconnection, the conducting of green light LED lamp string (G) and blue LED lamp string (B) and cut-off, red LED lamp string (R), can be light separately or extinguish between green light LED lamp string (G) and blue LED lamp string (B), also can be light the mixing carrying out two or three primary colours simultaneously, produce the lighting effects that seven looks full-color.
But, still there is larger defect in this traditional light bar structure, such as: the wire that four-wire system takies is a lot, and production technology is comparatively complicated, due to needs four wires, three loops, when making three primary colours light bar, for ensureing the Insulation Problems between four wires, lamp body must be fabricated into enough large, cause cost very high, large volume lamp body also causes bending radius excessive simultaneously, loses the use value that light bar should have; More seriously, because red LED lamp string (R), green light LED lamp string (G) and blue LED lamp string (B) are all linear arrangements, when especially three primary colours mix white light to colour mixture, due to node same between lamp string red-light LED, between green light LED and blue-ray LED, interval is larger, during colour mixture, the distortion factor is high, and this is also that the industry RGB that usually denounces cannot mix out the reason place of pure white light.
Summary of the invention
In order to solve the problem, the three line colorful LED lamp bands that the object of the present invention is to provide a kind of high-frequency pole-free type to control.
The present invention is the technical scheme that its technical problem of solution adopts:
A kind of three line colorful LED lamp bands, comprise the attaching plug (1), input power cord (2), controller (3), out-put supply line (4), the light bar body (S) that are electrically connected successively, this controller (3) are provided with function key (K1);
Three parallel main traverse lines (S1, S2, S3) and monochromatic LED lamp string and dual-colored LED lamp string is provided with in described light bar body (S), monochromatic LED lamp string (R) is connected to main traverse line (S1) and is connected with main traverse line (S2), dual-colored LED lamp series winding is connected between main traverse line (S2) and main traverse line (S3), wherein S2 is common wire, dual-colored LED lamp string is in series by some dual-colored LED, this dual-colored LED is made up of two kinds of primary-color LEDs of reverse parallel connection, and two kinds of LED primary colours that dual-colored LED comprises and the LED color of monochromatic LED lamp string are three kinds of color combination;
Function key (K1) is for inputting initial control signal to controller (3), and this controller (3) realizes switch and the brightness of monochromatic LED lamp string and dual-colored LED lamp string by the positive-negative polarity of out-put supply line (4) control main traverse line (S1, S2, S3).
Further, the supply module (31) that input is connected with out-put supply line (4) is provided with in described controller (3), and provide level to input and the MCU(32 connected successively by this supply module (31) respectively), circuits for triggering (33), on-off circuit (34), described function key (K1) and MCU(32) be connected to input initial control signal, this MCU(32) for the control signal output order keyed according to function key (K1) to circuits for triggering (33), circuits for triggering (33) are for the switch device conductive of gauge tap circuit (34) and disconnection, the switching device of this on-off circuit (34) is connected on main traverse line (S1 respectively, S2, S3) to control red LED lamp string (R) and between the output of supply module (31), the switch of green light LED lamp string (G) and blue LED lamp string (B) and brightness, main traverse line (S2) correspondence connects output polarity and the main traverse line (S1) of supply module (31), the output of main traverse line (S3) corresponding connection supply module (31) is contrary.
As the preferred version 1 of the technical program, described circuits for triggering (33) comprise respectively with MCU(32) signal output part be connected the 4th resistance (R4), A group triode triggers branch road (331) and B group triode triggers branch road (332);
Described on-off circuit (34) comprises A group half-bridge driver (U4), B group half-bridge driver (U5) and the first switching device metal-oxide-semiconductor (M1), second switch device metal-oxide-semiconductor (M2), the 3rd switching device metal-oxide-semiconductor (M3), the 4th switching device metal-oxide-semiconductor (M4), the 5th switching device metal-oxide-semiconductor (M5);
Described 4th resistance (R4) is connected with the grid of the 5th switching device metal-oxide-semiconductor (M5), the output that A group triode triggers branch road (331) is connected with A group half-bridge driver (U4) input, and the output that B group triode triggers branch road (332) is connected with the input of B group half-bridge driver (U5);
Two outputs of A group half-bridge driver (U4) are connected with the grid of the first switching device metal-oxide-semiconductor (M1), the grid of second switch device metal-oxide-semiconductor (M2) respectively, and two outputs of B group half-bridge driver (U5) are connected with the grid of the 3rd switching device metal-oxide-semiconductor (M3), the grid of the 4th switching device metal-oxide-semiconductor (M4) respectively;
Described first switching device metal-oxide-semiconductor (M1), second switch device metal-oxide-semiconductor (M2), 3rd switching device metal-oxide-semiconductor (M3), 4th switching device metal-oxide-semiconductor (M4) forms H bridge, first switching device metal-oxide-semiconductor (M1) and second switch device metal-oxide-semiconductor (M2) at same half-bridge and the two common point be connected with main traverse line (S3), 3rd switching device metal-oxide-semiconductor (M3) and the 4th switching device metal-oxide-semiconductor (M4) at another half-bridge and the two common point be connected with main traverse line (S2), first switching device metal-oxide-semiconductor (M1) is connected with the output of supply module (31) with the drain electrode of the 3rd switching device metal-oxide-semiconductor (M3), the drain electrode of the 5th switching device metal-oxide-semiconductor (M5) is connected with main traverse line (S1), described second switch device metal-oxide-semiconductor (M2), 4th switching device metal-oxide-semiconductor (M4), the source ground of the 5th switching device metal-oxide-semiconductor (M5).
Further, as the preferred version 2 of the technical program, in described light bar body (S), be also provided with the 4th look LED string (W), the 4th look LED of the 4th look LED string (W) and the LED reverse parallel connection of monochromatic LED lamp string;
Described circuits for triggering (33) comprise respectively with MCU(32) signal output part is connected that A group triode triggers branch road (331), B group triode triggers branch road (332), C group triode triggers branch road (333);
Described on-off circuit (34) comprises A group half-bridge driver (U4), B group half-bridge driver (U5), C group half-bridge driver (U6) and the first switching device metal-oxide-semiconductor (M1), second switch device metal-oxide-semiconductor (M2), the 3rd switching device metal-oxide-semiconductor (M3), the 4th switching device metal-oxide-semiconductor (M4), the 6th switching device metal-oxide-semiconductor (M6), the 7th switching device metal-oxide-semiconductor (M7);
The output that A group triode triggers branch road (331) is connected with A group half-bridge driver (U4) input, the output that B group triode triggers branch road (332) is connected with the input of B group half-bridge driver (U5), and the output that C group triode triggers branch road (333) is connected with the input of C group half-bridge driver (U6);
Two outputs of A group half-bridge driver (U4) are connected with the grid of the first switching device metal-oxide-semiconductor (M1), the grid of second switch device metal-oxide-semiconductor (M2) respectively, two outputs of B group half-bridge driver (U5) are connected with the grid of the 3rd switching device metal-oxide-semiconductor (M3), the grid of the 4th switching device metal-oxide-semiconductor (M4) respectively, and two outputs of C group half-bridge driver (U6) are connected with the grid of the 6th switching device metal-oxide-semiconductor (M6), the 7th switching device metal-oxide-semiconductor (M7) respectively;
Described first switching device metal-oxide-semiconductor (M1) and second switch device metal-oxide-semiconductor (M2) form the first half-bridge, 3rd switching device metal-oxide-semiconductor (M3) and the 4th switching device metal-oxide-semiconductor (M4) form the second half-bridge, 6th switching device metal-oxide-semiconductor (M6) and the 7th switching device metal-oxide-semiconductor (M7) form the 3rd half-bridge, 3rd half-bridge and the first half-bridge, H bridge is formed mutually between second half-bridge, first switching device metal-oxide-semiconductor (M1) is connected with main traverse line (S3) with second switch device metal-oxide-semiconductor (M2) common point, 3rd switching device metal-oxide-semiconductor (M3) is connected with main traverse line (S2) with the 4th switching device metal-oxide-semiconductor (M4) common point, 6th switching device metal-oxide-semiconductor (M6), 7th switching device metal-oxide-semiconductor (M7) common point is connected with tin twisted wire (S1), first switching device metal-oxide-semiconductor (M1), 3rd switching device metal-oxide-semiconductor (M3) is connected with the output of supply module (31) with the drain electrode of the 6th switching device metal-oxide-semiconductor (M6), described second switch device metal-oxide-semiconductor (M2), 4th switching device metal-oxide-semiconductor (M4), the source ground of the 7th switching device metal-oxide-semiconductor (M7).
Especially, described MCU(32) point dutycycle the control signal adopting frequency to be more than or equal to 2KHz control between main traverse line (S1, S2, S3) dipole inversion.
The concrete power supply plan of the technical program is: described supply module (31) comprises the EMC filter circuit (311), rectification circuit (312), driver reduction voltage circuit (313), single-chip microcomputer reduction circuit (314) that connect successively; A wherein output of this rectification circuit (312) is used for power supply to main traverse line (S1, S2, S3), another output is connected with driver reduction voltage circuit (313) input, the output of driver reduction voltage circuit (313) reduces circuit (314) respectively with single-chip microcomputer, the power input of on-off circuit (34) is connected, and single-chip microcomputer reduces circuit (314) output and MCU(32) power input be connected.
Further, described light bar body (S) also comprises along the same crust (S4), heart yearn (S5), the hollow tube (S6) that move towards to distribute, this crust (S4) is wrapped in heart yearn (S5) outer surface, hollow tube (S6) and described main traverse line (S1, S2, S3) extend longitudinally in heart yearn (S5) along heart yearn (S5), and described monochromatic LED lamp string dual-colored LED lamp string is arranged in hollow tube (S6) along hollow tube (S6) trend.
Further, the monochromatic LED of described monochromatic LED lamp string and the dual-colored LED of dual-colored LED lamp string form arrangement, and this monochromatic LED is relative with the head of dual-colored LED group.
Wherein, described out-put supply line (4) with between light bar body (S) with power supply female joint (5) with extend male joint (8) and be connected.
Further, the joining place of described power supply female joint (5) and extension male joint (8) is provided with the first waterproof apron (7) and the first nut (6), and this first nut (6) is by locking the first waterproof apron (7) with the threaded engagement extending male joint (8) outer surface.
Further, the afterbody of described light bar body (S) is connected with and extends female joint (16), this extension female joint (16) is arranged with tail plug (18), extend between female joint (16) and tail plug (18) and be provided with the second waterproof apron (17), tail plug (18) outer surface is provided with the second nut, and (19 to lock the second waterproof apron (17).
The invention has the beneficial effects as follows:
(1) LED of the present invention adopts the three twisted wire nonpolarity bluish-green dual-colored LED lamp strings of collocation and red LED lamp string composition, realize seven color changes of light bar, compare traditional four-wire system and decrease a main line, production technology simplifies, save light bar inner space, thus reduce cost of manufacture.
(2) because LED and the dual-colored LED of turquoise dual-colored LED lamp string of ruddiness monochromatic LED lamp string forms to arrange and head is relative, when especially three primary colours mix white light to colour mixture, the red-light LED of same node, the interval between green light LED and blue-ray LED shorten greatly, during colour mixture, the distortion factor is extremely low, thus makes color blending effect very true to nature;
(3) controller is by the inversion transformation technique of AC-DC-AC, be high frequency by common power frequency inversion, realize the color controlling without polar form LED, by timesharing color separation rapid scanning, by monochromatic LED according to the light on and off time than sequential illumination, high-speed circulating run, the hysteresis quality of human eye to light intensity is utilized to realize the difference change of LED color and brightness, vibration frequency is beyond the sentient frequency of human eye, and human eye perceives, less than the flicker of LED lamplight, eliminates the injury of LED flicker to human eye.
(4) adopt the combination that switching speed is faster, control H bridge type inverter structure that easier full-control type power device MOSFET forms and singlechip microprocessor simultaneously, the polarity of nonpolarity LED that more traditional controllers cannot realize and the control effects of brightness can be realized.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is four line three primary colours winding displacement schematic diagrames of traditional LED lamp band;
Fig. 2 is the structural representation of the present invention three line colorful LED lamp band;
Fig. 3 is the sectional view of light bar body of the present invention;
Fig. 4 is the cross-sectional view of light bar body of the present invention;
Fig. 5 be the theory diagram of the present invention three line colorful LED lamp band 1.;
Fig. 6 be the theory diagram of the present invention three line colorful LED lamp band 2.;
Fig. 7 is the circuit diagram of supply module of the present invention;
Fig. 8 is the circuit diagram driving reduction voltage circuit;
Fig. 9 is the circuit diagram of MCU and circuits for triggering in the first embodiment;
Figure 10 is the circuit diagram of the first embodiment breaker in middle circuit;
Figure 11 is the circuit diagram of MCU and circuits for triggering in the second embodiment;
Figure 12 is the circuit diagram of the second embodiment breaker in middle circuit;
Figure 13 is the cut-away drawing of half-bridge driver.
Detailed description of the invention
Shown in Fig. 2-Fig. 4, for three line colorful LED lamp bands of the present invention, comprise the attaching plug 1 be electrically connected successively, input power cord 2, controller 3, out-put supply line 4, light bar body S, this controller 3 is provided with function key K1(K1 can adopt the combination of remote controller and remote control reception head to replace), wherein, with power supply female joint 5 with extend male joint 8 and be connected between described out-put supply line 4 with light bar body S, the joining place of power supply female joint 5 and extension male joint 8 is provided with the first waterproof apron 7 and the first nut 6, this first nut 6 is by locking to ensure waterproof requirement by the first waterproof apron 7 with the threaded engagement extending male joint 8 outer surface.
On the other hand, the afterbody of light bar body S is connected with and extends female joint 16, this extension female joint 16 is arranged with tail plug 18, and extend between female joint 16 and tail plug 18 and be provided with the second waterproof apron 17, tail plug 18 outer surface is provided with the second nut 19 to lock the second waterproof apron 17 to ensure waterproof requirement.Herein, extend female joint 16 and also infinitely can connect extension male joint 8, the length of expansion light bar, finally goes up tail plug 18 again.
The light bar body S of the technical program comprises along the same crust S4 moving towards to distribute, heart yearn S5, hollow tube S6, and the main traverse line S1 that three parallel, S2, S3, and ruddiness monochromatic LED lamp string R, bluish-green dual-colored LED lamp string (B, G), described red LED lamp string R head and the tail two ends respectively with main traverse line S1, main traverse line S2 connects, bluish-green dual-colored LED lamp series winding is connected between main traverse line S2 and main traverse line S3, this crust S4 is wrapped in heart yearn S5 outer surface, hollow tube S6 and described main traverse line S1, S2, S3 extends in heart yearn S5 along heart yearn S5 trend, described red LED lamp string R, bluish-green dual-colored LED lamp string is arranged in hollow tube S6 along hollow tube S6 trend.
Especially, LED and the dual-colored LED of turquoise dual-colored LED lamp string of ruddiness monochromatic LED lamp string form to arrange and head is relative, when especially three primary colours mix white light to colour mixture, the red-light LED of same node, the interval between green light LED and blue-ray LED shorten greatly, during colour mixture, the distortion factor is extremely low, thus makes color blending effect very true to nature.
As shown in Figure 5 and Figure 6, for basic control principle framework of the present invention, be provided with the supply module 31 that input is connected with out-put supply line 4 in controller 3, and provide level to input and the MCU32 connected successively, circuits for triggering 33, on-off circuit 34 by this supply module 31 respectively; MCU32 point of dutycycle also adopts frequency to be more than or equal to the dipole inversion between control signal control main traverse line S1, S2, S3 of 2KHz.
Function key K1 and MCU32 connects to input initial control signal, the control signal output order that this MCU32 keys according to function key K1 is to circuits for triggering 33, circuits for triggering 33 are for the switch device conductive of gauge tap circuit 34 and disconnection, the switching device of this on-off circuit 34 is connected on main traverse line S1 respectively, S2, to control red LED lamp string R between the output of S3 and supply module 31, blue green light LED lamp string B, the switch of G and brightness, wherein, main traverse line S2 correspondence connects output polarity and the main traverse line S1 of supply module 31, the output of main traverse line S3 corresponding connection supply module 31 is contrary.
By the inversion transformation technique of AC-DC-AC, be high frequency by common power frequency inversion, realize the color controlling without polar form LED, by timesharing color separation rapid scanning, by monochromatic LED according to the light on and off time than sequential illumination, high-speed circulating run, the hysteresis quality of human eye to light intensity is utilized to realize the difference change of LED color and brightness, vibration frequency is beyond the sentient frequency of human eye, and human eye perceives, less than the flicker of LED lamplight, eliminates the injury of LED flicker to human eye.
As shown in Figure 7, Figure 8, the concrete power supply plan of the technical program is: described supply module 31 comprises the EMC filter circuit 311, rectification circuit 312, driver reduction voltage circuit 313, the single-chip microcomputer reduction circuit 314 that connect successively; A wherein output (V-120V) of this rectification circuit 312 is for powering to main traverse line S1, S2, S3, another output (V1) is connected with driver reduction voltage circuit 313 input, the output (VDD) of driver reduction voltage circuit 313 reduces circuit 314 with single-chip microcomputer respectively, the power input of on-off circuit 34 is connected, single-chip microcomputer reduces circuit 314 output (5V, VCC) and is connected with the power input of MCU32.
As the preferred version 1 of the technical program, based on the colour mixture scheme of above-mentioned three kinds of colors, be illustrate with the representational three primary colours of most, i.e. red LED lamp string R, blue green light LED lamp string B, G;
As shown in Figure 9, circuits for triggering 33 comprise the 4th resistance R4, A group triode be connected with MCU32 signal output part respectively and trigger branch road 331 and B group triode triggers branch road 332;
And on-off circuit 34 comprises A group half-bridge driver U4, B group half-bridge driver U5 and the first switching device metal-oxide-semiconductor M1, second switch device metal-oxide-semiconductor M2, the 3rd switching device metal-oxide-semiconductor M3, the 4th switching device metal-oxide-semiconductor M4, the 5th switching device metal-oxide-semiconductor M5; As Figure 10.
4th resistance R4 is connected with the grid of the 5th switching device metal-oxide-semiconductor M5, and the output that A group triode triggers branch road 331 is connected with A group half-bridge driver U4 input, and the output that B group triode triggers branch road 332 is connected with the input of B group half-bridge driver U5;
Two outputs of A group half-bridge driver U4 are connected with the grid of the first switching device metal-oxide-semiconductor M1, the grid of second switch device metal-oxide-semiconductor M2 respectively, and two outputs of B group half-bridge driver U5 are connected with the grid of the 3rd switching device metal-oxide-semiconductor M3, the grid of the 4th switching device metal-oxide-semiconductor M4 respectively;
First switching device metal-oxide-semiconductor M1, second switch device metal-oxide-semiconductor M2, 3rd switching device metal-oxide-semiconductor M3, 4th switching device metal-oxide-semiconductor M4 forms H bridge, first switching device metal-oxide-semiconductor M1 and second switch device metal-oxide-semiconductor M2 at same half-bridge and the two common point be connected with tin twisted wire S3, 3rd switching device metal-oxide-semiconductor M3 and the 4th switching device metal-oxide-semiconductor M4 at another half-bridge and the two common point be connected with main traverse line S2, first switching device metal-oxide-semiconductor M1 is connected with the output of supply module 31 with the drain electrode of the 3rd switching device metal-oxide-semiconductor M3, the drain electrode of the 5th switching device metal-oxide-semiconductor M5 is connected with main traverse line S1, described second switch device metal-oxide-semiconductor M2, 4th switching device metal-oxide-semiconductor M4, the source ground of the 5th switching device metal-oxide-semiconductor M5.
As the preferred version 2 of the technical program, for making the purer when white light colour mixture of the technical program, be provided with red LED lamp string R, bluish-green dual-colored LED lamp string B, G, the 4th look LED string (for white light LEDs) in described light bar body S simultaneously, the white light LEDs of the 4th look LED string and the red LED reverse parallel connection of red LED lamp string R, the light bar body S part of composition graphs 6;
As Figure 11, circuits for triggering 33 comprise and are connected that A group triode triggers branch road 331, B group triode triggers branch road 332, C group triode triggers branch road 333 respectively with MCU32 signal output part;
Accordingly, on-off circuit 34 comprises A group half-bridge driver U4, B group half-bridge driver U5, C group half-bridge driver U6 and the first switching device metal-oxide-semiconductor M1, second switch device metal-oxide-semiconductor M2, the 3rd switching device metal-oxide-semiconductor M3, the 4th switching device metal-oxide-semiconductor M4, the 6th switching device metal-oxide-semiconductor M6, the 7th switching device metal-oxide-semiconductor M7; As Figure 12.
The output that A group triode triggers branch road 331 is connected with A group half-bridge driver U4 input, the output that B group triode triggers branch road 332 is connected with the input of B group half-bridge driver U5, and the output that C group triode triggers branch road 333 is connected with the input of C group half-bridge driver U6;
Two outputs of A group half-bridge driver U4 are connected with the grid of the first switching device metal-oxide-semiconductor M1, the grid of second switch device metal-oxide-semiconductor M2 respectively, two outputs of B group half-bridge driver U5 are connected with the grid of the 3rd switching device metal-oxide-semiconductor M3, the grid of the 4th switching device metal-oxide-semiconductor M4 respectively, and two outputs of C group half-bridge driver U6 are connected with the grid of the 6th switching device metal-oxide-semiconductor M6, the 7th switching device metal-oxide-semiconductor M7 respectively;
First switching device metal-oxide-semiconductor M1 and second switch device metal-oxide-semiconductor M2 forms the first half-bridge, 3rd switching device metal-oxide-semiconductor M3 and the 4th switching device metal-oxide-semiconductor M4 forms the second half-bridge, 6th switching device metal-oxide-semiconductor M6 and the 7th switching device metal-oxide-semiconductor M7 forms the 3rd half-bridge, 3rd half-bridge and the first half-bridge, H bridge is formed mutually between second half-bridge, first switching device metal-oxide-semiconductor M1 is connected with tin twisted wire S3 with second switch device metal-oxide-semiconductor M2 common point, 3rd switching device metal-oxide-semiconductor M3 is connected with tin twisted wire S2 with the 4th switching device metal-oxide-semiconductor M4 common point, 6th switching device metal-oxide-semiconductor M6, 7th switching device metal-oxide-semiconductor M7 common point is connected with main traverse line S1, first switching device metal-oxide-semiconductor M1, 3rd switching device metal-oxide-semiconductor M3 is connected with the output of supply module 31 with the drain electrode of the 6th switching device metal-oxide-semiconductor M6, described second switch device metal-oxide-semiconductor M2, 4th switching device metal-oxide-semiconductor M4, the source ground of the 7th switching device metal-oxide-semiconductor M7.
Above-mentioned half-bridge driver (U4, U5, U6) structure is as Figure 13, Vcc is the power supply that half-bridge driver is powered, be 16V in the design, IN is the input of control signal, input equivalent resistance is very high, directly can connect the signal sent from microprocessor (MCU), optocoupler or other control circuit.Logic input signal and CMOS level compatibility, when input terminal voltage is logical one, half-bridge driver output HO exports high level, and driving is managed; Output LO output low level, closes lower pipe.When input terminal voltage is logical zero, situation is just in time contrary.Half-bridge driver inside is provided with the Dead Time (Deadtime) of 650ns, can prevent managing direct conducting up and down and cause short circuit accident.COM is earth terminal, and the source S of direct and lower pipe MOSFET is connected.HO, LO are upper, lower tube control logic output respectively, and Vb is high-pressure side suspended power supply end, and Vs is suspension ground, high-pressure side, and their current potential can change with the ON-OFF of upper pipe.
Its operation principle is: when input (IN) is for logical zero, lower pipe conducting, upper pipe by, Vs is conducting over the ground, VCC electric current by diode to capacitor charging, when input (IN) is for logical one, lower pipe by, Vs suspends over the ground, and the electric charge that electric capacity stores provides voltage for upper pipe conducting.Also bootstrap technique is claimed.But control signal is logical one for a long time, the electric charge of pipe electric capacity can be caused to use up and end pipe, therefore the dutycycle of control signal can not be 100%.When upper pipe capacitor charging diode is used for preventing pipe conducting, high-tension electricity scurries into Vcc damaged on end bad low-voltage device, also claims bootstrap diode.When high side device is opened, bootstrap diode must can stop high pressure, and should be fast recovery diode, to reduce the feedback electric charge from bootstrap capacitor to power Vcc.It is oppositely withstand voltage should be greater than power terminal voltage, and recovery time should be less than 100ns.
In addition, it needs to be noted, in the present embodiment only with red LED lamp string R head and the tail two ends respectively with main traverse line S1, main traverse line S2 connects, bluish-green dual-colored LED lamp string B, G to be connected in parallel between main traverse line S2 and main traverse line S3 this group position relationship for preferred embodiment with pole reversal LED, from the principle, red LED lamp string R, bluish-green dual-colored LED lamp string B, the position of G between tin twisted wire S1 and S2 and between S2 and S3 and LED color can be combined, lamp string is not by the restriction of LED color, than LED color as is known: red, green, blue, white, yellow, orange, pink colour, purple, amber, blue, purple, blue-green, blue and white, red and white, emerald green, blue-green, bluish violets etc. are applicable to three kinds of color combination of the first embodiment and four kinds of color combination of the second embodiment.
The foregoing is only preferred embodiments of the present invention, as long as the technical scheme realizing the object of the invention with basic same approach all belongs within protection scope of the present invention.
Claims (10)
1. a line colorful LED lamp band, comprise the attaching plug (1), input power cord (2), controller (3), out-put supply line (4), the light bar body (S) that are electrically connected successively, this controller (3) is provided with function key (K1), it is characterized in that:
Three parallel main traverse lines (S1, S2, S3) and monochromatic LED lamp string and dual-colored LED lamp string is provided with in described light bar body (S), monochromatic LED lamp series winding is connected on main traverse line (S1) and is connected with main traverse line (S2), dual-colored LED lamp series winding is connected between main traverse line (S2) and main traverse line (S3), wherein S2 is common wire, dual-colored LED lamp string is in series by some dual-colored LED, this dual-colored LED is made up of two kinds of primary-color LEDs of reverse parallel connection, and two kinds of LED primary colours that dual-colored LED comprises and the LED color of monochromatic LED lamp string are three kinds of color combination;
Function key (K1) is for inputting initial control signal to controller (3), and this controller (3) realizes switch and the brightness of monochromatic LED lamp string and dual-colored LED lamp string by the positive-negative polarity of out-put supply line (4) control main traverse line (S1, S2, S3).
2. a kind of three line colorful LED lamp bands according to claim 1, it is characterized in that: in described controller (3), be provided with the supply module (31) that input is connected with out-put supply line (4), and provide level to input and the MCU(32 connected successively by this supply module (31) respectively), circuits for triggering (33), on-off circuit (34), described function key (K1) and MCU(32) be connected to input initial control signal, this MCU(32) for the control signal output order keyed according to function key (K1) to circuits for triggering (33), circuits for triggering (33) are for the switch device conductive of gauge tap circuit (34) and disconnection, the switching device of this on-off circuit (34) is connected on main traverse line (S1 respectively, S2, S3) to control switch and the brightness of monochromatic LED lamp string and dual-colored LED lamp string and between the output of supply module (31).
3. a kind of three line colorful LED lamp bands according to claim 2, is characterized in that:
Described circuits for triggering (33) comprise respectively with MCU(32) signal output part be connected the 4th resistance (R4), A group triode triggers branch road (331) and B group triode triggers branch road (332);
Described on-off circuit (34) comprises A group half-bridge driver (U4), B group half-bridge driver (U5) and the first switching device metal-oxide-semiconductor (M1), second switch device metal-oxide-semiconductor (M2), the 3rd switching device metal-oxide-semiconductor (M3), the 4th switching device metal-oxide-semiconductor (M4), the 5th switching device metal-oxide-semiconductor (M5);
Described 4th resistance (R4) is connected with the grid of the 5th switching device metal-oxide-semiconductor (M5), the output that A group triode triggers branch road (331) is connected with A group half-bridge driver (U4) input, and the output that B group triode triggers branch road (332) is connected with the input of B group half-bridge driver (U5);
Two outputs of A group half-bridge driver (U4) are connected with the grid of the first switching device metal-oxide-semiconductor (M1), the grid of second switch device metal-oxide-semiconductor (M2) respectively, and two outputs of B group half-bridge driver (U5) are connected with the grid of the 3rd switching device metal-oxide-semiconductor (M3), the grid of the 4th switching device metal-oxide-semiconductor (M4) respectively;
Described first switching device metal-oxide-semiconductor (M1), second switch device metal-oxide-semiconductor (M2), 3rd switching device metal-oxide-semiconductor (M3), 4th switching device metal-oxide-semiconductor (M4) forms H bridge, first switching device metal-oxide-semiconductor (M1) and second switch device metal-oxide-semiconductor (M2) at same half-bridge and the two common point be connected with main traverse line (S3), 3rd switching device metal-oxide-semiconductor (M3) and the 4th switching device metal-oxide-semiconductor (M4) at another half-bridge and the two common point be connected with main traverse line (S2), first switching device metal-oxide-semiconductor (M1) is connected with the output of supply module (31) with the drain electrode of the 3rd switching device metal-oxide-semiconductor (M3), the drain electrode of the 5th switching device metal-oxide-semiconductor (M5) is connected with main traverse line (S1), described second switch device metal-oxide-semiconductor (M2), 4th switching device metal-oxide-semiconductor (M4), the source ground of the 5th switching device metal-oxide-semiconductor (M5).
4. a kind of three line colorful LED lamp bands according to claim 2, is characterized in that: be also provided with the 4th look LED string in described light bar body (S), the 4th look LED of the 4th look LED string and the LED reverse parallel connection of monochromatic LED lamp string;
Described circuits for triggering (33) comprise respectively with MCU(32) signal output part is connected that A group triode triggers branch road (331), B group triode triggers branch road (332), C group triode triggers branch road (333);
Described on-off circuit (34) comprises A group half-bridge driver (U4), B group half-bridge driver (U5), C group half-bridge driver (U6) and the first switching device metal-oxide-semiconductor (M1), second switch device metal-oxide-semiconductor (M2), the 3rd switching device metal-oxide-semiconductor (M3), the 4th switching device metal-oxide-semiconductor (M4), the 6th switching device metal-oxide-semiconductor (M6), the 7th switching device metal-oxide-semiconductor (M7);
The output that A group triode triggers branch road (331) is connected with A group half-bridge driver (U4) input, the output that B group triode triggers branch road (332) is connected with the input of B group half-bridge driver (U5), and the output that C group triode triggers branch road (333) is connected with the input of C group half-bridge driver (U6);
Two outputs of A group half-bridge driver (U4) are connected with the grid of the first switching device metal-oxide-semiconductor (M1), the grid of second switch device metal-oxide-semiconductor (M2) respectively, two outputs of B group half-bridge driver (U5) are connected with the grid of the 3rd switching device metal-oxide-semiconductor (M3), the grid of the 4th switching device metal-oxide-semiconductor (M4) respectively, and two outputs of C group half-bridge driver (U6) are connected with the grid of the 6th switching device metal-oxide-semiconductor (M6), the 7th switching device metal-oxide-semiconductor (M7) respectively;
Described first switching device metal-oxide-semiconductor (M1) and second switch device metal-oxide-semiconductor (M2) form the first half-bridge, 3rd switching device metal-oxide-semiconductor (M3) and the 4th switching device metal-oxide-semiconductor (M4) form the second half-bridge, 6th switching device metal-oxide-semiconductor (M6) and the 7th switching device metal-oxide-semiconductor (M7) form the 3rd half-bridge, 3rd half-bridge and the first half-bridge, H bridge is formed mutually between second half-bridge, first switching device metal-oxide-semiconductor (M1) is connected with main traverse line (S3) with second switch device metal-oxide-semiconductor (M2) common point, 3rd switching device metal-oxide-semiconductor (M3) is connected with main traverse line (S2) with the 4th switching device metal-oxide-semiconductor (M4) common point, 6th switching device metal-oxide-semiconductor (M6), 7th switching device metal-oxide-semiconductor (M7) common point is connected with main traverse line (S1), first switching device metal-oxide-semiconductor (M1), 3rd switching device metal-oxide-semiconductor (M3) is connected with the output of supply module (31) with the drain electrode of the 6th switching device metal-oxide-semiconductor (M6), described second switch device metal-oxide-semiconductor (M2), 4th switching device metal-oxide-semiconductor (M4), the source ground of the 7th switching device metal-oxide-semiconductor (M7).
5. a kind of three line colorful LED lamp bands according to claim 2, is characterized in that: described MCU(32) point dutycycle the control signal adopting frequency to be more than or equal to 2KHz control between main traverse line (S1, S2, S3) dipole inversion.
6. a kind of three line colorful LED lamp bands according to claim 2, is characterized in that: described supply module (31) comprises the EMC filter circuit (311), rectification circuit (312), driver reduction voltage circuit (313), single-chip microcomputer reduction circuit (314) that connect successively; A wherein output of this rectification circuit (312) is used for power supply to main traverse line (S1, S2, S3), another output is connected with driver reduction voltage circuit (313) input, the output of driver reduction voltage circuit (313) reduces circuit (314) respectively with single-chip microcomputer, the power input of on-off circuit (34) is connected, and single-chip microcomputer reduces circuit (314) output and MCU(32) power input be connected.
7. a kind of three line colorful LED lamp bands according to claim 1, it is characterized in that: described light bar body (S) also comprises along the same crust (S4), heart yearn (S5), the hollow tube (S6) that move towards to distribute, this crust (S4) is wrapped in heart yearn (S5) outer surface, hollow tube (S6) and described main traverse line (S1, S2, S3) extend longitudinally in heart yearn (S5) along heart yearn (S5), and described monochromatic LED lamp string and dual-colored LED lamp string are arranged in hollow tube (S6) along hollow tube (S6).
8. a kind of three line colorful LED lamp bands according to claim 7, is characterized in that: the monochromatic LED of described monochromatic LED lamp string and the dual-colored LED of dual-colored LED lamp string form arrangement, and this monochromatic LED is relative with the head of dual-colored LED group.
9. a kind of three line colorful LED lamp bands according to claim 1, is characterized in that: described out-put supply line (4) with between light bar body (S) with power supply female joint (5) with extend male joint (8) and be connected.
10. a kind of three line colorful LED lamp bands according to claim 8, it is characterized in that: the joining place of described power supply female joint (5) and extension male joint (8) is provided with the first waterproof apron (7) and the first nut (6), this first nut (6) is by locking the first waterproof apron (7) with the threaded engagement extending male joint (8) outer surface; The afterbody of described light bar body (S) is connected with and extends female joint (16), this extension female joint (16) is arranged with tail plug (18), extend between female joint (16) and tail plug (18) and be provided with the second waterproof apron (17), tail plug (18) outer surface is provided with the second nut, and (19 to lock the second waterproof apron (17).
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