CN101257755A - LED flood light drive device and method - Google Patents
LED flood light drive device and method Download PDFInfo
- Publication number
- CN101257755A CN101257755A CNA2008100272994A CN200810027299A CN101257755A CN 101257755 A CN101257755 A CN 101257755A CN A2008100272994 A CNA2008100272994 A CN A2008100272994A CN 200810027299 A CN200810027299 A CN 200810027299A CN 101257755 A CN101257755 A CN 101257755A
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- stepping motor
- bridge driven
- microcontroller
- led floodlight
- drive
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Abstract
A LED floodlight drive device and a driving method thereof are provided. The LED floodlight drive device comprises a microcontroller, a double half-bridge drive, a stepping motor; the output end of the microcontroller is connected with the input end of the double half-bridge drive, the output end of the double half-bridge drive is connected with the input end of the stepping motor, the drive device is characterized by direct input into the stepping motor by the double half-bridge drive. The LED floodlight drive device and a driving method thereof directly amplify PWM impulse signals to rotate the stepping motor without generating joggling and noise.
Description
Technical field
The present invention relates to a kind of LED floodlight Drive And Its Driving Method.
Background technology
LED science and technology itself is fast-developing at present, and the wafer of formation and various synthetic schemes improve constantly, and luminous efficacy constantly promotes.The drive unit of LED floodlight in the prior art as depicted in figs. 1 and 2, generally comprises microcontroller, counts and touch conversion (7528 numbers are touched conversion), stepping motor special purpose driver (L6219 motor-driven IC), stepping motor; Traditional step motor drive mode is to finish in branch three step, 1, MCU (microcontroller) sends digital signal to D/A (7528 numbers are touched conversion); 2, D/A converts to and simulates signal to stepping motor special purpose driver (L6219 motor-driven IC); 3, special-purpose stepper motor driver generates the direct drive stepping motor rotation of big electric current pwm pulse.Yet, can produce shake and noise during the operation of this kind stepping motor.
Goal of the invention
The object of the present invention is to provide a kind of drive unit of LED floodlight, it can not produce shake and noise.
Another object of the present invention is to provide a kind of driving method of LED floodlight drive unit, it can not produce shake and noise.
To achieve these goals, LED floodlight drive unit of the present invention, comprise microcontroller, two half-bridge driven, stepping motor, the output of described microcontroller is connected with the input of two half-bridge driven, and the output of described pair of half-bridge driven is connected with the input of stepping motor; Described pair of half-bridge driven is 6205 type drive IC; This drive unit can not produce shake and noise owing to be to be directly inputted to stepping motor by two half-bridge driven.
As improvement, described microcontroller is single-chip microcomputer or CPU, sends the PWN pulse signal.In order to realize above-mentioned another purpose, the driving method of LED floodlight drive unit of the present invention, be provided with microcontroller, two half-bridge driven, stepping motor, the output of described microcontroller is connected with the input of two half-bridge driven, and the output of described pair of half-bridge driven is connected with the input of stepping motor; Described pair of half-bridge driven is 6205 type drive IC; At first, send the PWN pulse signal, come drive stepping motor to rotate direct amplification of pwm pulse signal that microcontroller takes place by two half-bridge driven again by microcontroller; This driving method can not produce shake and noise owing to be by two half-bridge driven pwm pulse signal directly to be amplified to come drive stepping motor to rotate.
Compared with prior art, LED floodlight Drive And Its Driving Method of the present invention, come drive stepping motor to rotate direct amplification of pwm pulse signal by two half-bridge driven, in this course of work, reduced by a conversion of signals job, the error that software and hardware coupling causes in the signal conversion process has been reduced once, make and the machine work that the more accurate control step motor of circuit micro control system rotates can not produce shake and noise.
Description of drawings
Fig. 1 is the flow chart of prior art LED floodlight drive unit;
Fig. 2 is the block diagram of LED floodlight drive unit of the present invention;
Fig. 3 is the flow chart of LED floodlight drive unit of the present invention;
Fig. 4 is the block diagram of LED floodlight drive unit of the present invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Please refer to Fig. 3 and shown in Figure 4, LED floodlight drive unit of the present invention, being used for the driving LED floodlight rotates, comprise microcontroller, two half-bridge driven, stepping motor, the output of described microcontroller is connected with the input of two half-bridge driven, and the output of described pair of half-bridge driven is connected with the input of stepping motor.In the present embodiment, described microcontroller is single-chip microcomputer or CPU, sends little electric current PWN pulse signal; Described pair of half-bridge driven is 6205 type drive IC, the PWN pulse signal zoomed into big electric current PWN pulse signal export to stepping motor.This drive unit can not produce shake and noise owing to be by two half-bridge driven signal to be directly inputted to stepping motor.
The driving method of LED floodlight drive unit of the present invention, be provided with microcontroller, two half-bridge driven, stepping motor, the output of described microcontroller is connected with the input of two half-bridge driven, and the output of described pair of half-bridge driven is connected with the input of stepping motor; Described pair of half-bridge driven is 6205 type drive IC; At first, send little electric current PWN pulse signal by microcontroller, the little electric current pwm pulse signal that microcontroller is taken place by two half-bridge driven directly zooms into big electric current PWN pulse signal and comes drive stepping motor to rotate again; This driving method can not produce shake and noise owing to be by two half-bridge driven pwm pulse signal directly to be amplified to come drive stepping motor to rotate.
Compared with prior art, LED floodlight Drive And Its Driving Method of the present invention, by Two half-bridge driven come Driving Stepping Motor to rotate direct amplification of pwm pulse signal, in this work Reduced the signal conversion work in the process one time, made software and Hardware match in the signal conversion process The error that causes has reduced once, so that the more accurate control step motor of circuit micro control system turns to Moving machine work, thus shake and noise can not produced.
Claims (3)
1, a kind of LED floodlight drive unit, it is characterized in that: comprise microcontroller, two half-bridge driven, stepping motor, the output of described microcontroller is connected with the input of two half-bridge driven, and the output of described pair of half-bridge driven is connected with the input of stepping motor; Described pair of half-bridge driven is 6205 type drive IC.
2, LED floodlight drive unit as claimed in claim 1, it is characterized in that: described microcontroller is single-chip microcomputer or CPU.
3, a kind of driving method of LED floodlight drive unit, it is characterized in that: be provided with microcontroller, two half-bridge driven, stepping motor, the output of described microcontroller is connected with the input of two half-bridge driven, and the output of described pair of half-bridge driven is connected with the input of stepping motor; Described pair of half-bridge driven is 6205 type drive IC; At first, send the PWN pulse signal, come drive stepping motor to rotate direct amplification of pwm pulse signal that microcontroller takes place by two half-bridge driven again by microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100272994A CN101257755A (en) | 2008-04-09 | 2008-04-09 | LED flood light drive device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100272994A CN101257755A (en) | 2008-04-09 | 2008-04-09 | LED flood light drive device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101257755A true CN101257755A (en) | 2008-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100272994A Pending CN101257755A (en) | 2008-04-09 | 2008-04-09 | LED flood light drive device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101257755A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487566A (en) * | 2010-12-01 | 2012-06-06 | 海洋王照明科技股份有限公司 | LED light source jitter removal control method and circuit thereof |
-
2008
- 2008-04-09 CN CNA2008100272994A patent/CN101257755A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487566A (en) * | 2010-12-01 | 2012-06-06 | 海洋王照明科技股份有限公司 | LED light source jitter removal control method and circuit thereof |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20080903 |