CN104582163A - Light source controller - Google Patents
Light source controller Download PDFInfo
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- CN104582163A CN104582163A CN201410836895.2A CN201410836895A CN104582163A CN 104582163 A CN104582163 A CN 104582163A CN 201410836895 A CN201410836895 A CN 201410836895A CN 104582163 A CN104582163 A CN 104582163A
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- light source
- control module
- chip microcomputer
- source controller
- source control
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Abstract
The invention discloses a light source controller, and relates to the technical field of a light source controller. The light source controller comprises a single-chip microcomputer, an SPI(serial peripheral interface) bus, at least one set of light source control module and a light source, wherein the single-chip microcomputer, the at least one set of light source control module and the light source are respectively connected through the SPI bus in a communication manner. After the single-chip microcomputer receives an external command, the external command is transferred to a DAC chip of the light source control module, and the light source is regulated and controlled through the light source control module. The light source controller disclosed by the invention solves the problem that multiple light source control channels are difficultly added to a traditional light source controller.
Description
Technical field
The present invention relates to light source controller technical field, particularly relate to a kind of light source controller.
Background technology
High accuracy PC (computer) adjustable LED light source controller generally has allows light-source brightness fast and stable turn off the light function to set point and fast open; When active computer carries out brilliance control, need computer to send a brightness settings by serial ports, controller carries out current constant control according to this set point current negative feedback control circuit, and actual light source brightness and set point are consistent.Set point is provided by Single Chip Microcomputer (SCM) PWM port, but the integrated PWM port of single-chip microcomputer is fewer, and can not expand.Therefore, on market, can control light source controller with PC is generally below 5 passages.In order to improve existing situation, need the light source controller of a kind of by computer control and easily expansion light source control channel of design badly.
Summary of the invention
The object of the invention is to propose a kind of light source controller, by computer control, the extendible light source controller of light source control passage.
For reaching this object, the present invention by the following technical solutions:
A kind of light source controller, described light source controller comprises single-chip microcomputer, spi bus, at least one group of light source control module and light source, wherein, single-chip microcomputer is all connected by described spi bus communication with light source with at least one group of light source control module, after described single-chip microcomputer receives external command, be delivered to the DAC chip of light source control module by spi bus, and by light source control module, light source regulated and controled.
Further technical scheme, described light source controller comprises at least two group light source control module and light sources, and the input of described light source control module is all connected with single-chip microcomputer by spi bus.
Further technical scheme, described light source control module is for controlling light-source brightness fast and stable to set point, and the control circuit of employing is current negative feedback control circuit.
Further technical scheme, described light source control module is provided with switch lamp line.
Further technical scheme, described single-chip microcomputer is connected with computer.
Beneficial effect of the present invention:
A kind of light source controller provided by the invention, comprise spi bus, described spi bus has master-slave machine function, and the input of multiple light source control module is all connected with single-chip microcomputer by spi bus, solves and will increase the inconvenient problem of multiple light source control passages traditionally.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the light source controller that the specific embodiment of the invention provides.
Wherein, 1, spi bus.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the light source controller that the specific embodiment of the invention provides.As shown in Figure 1, light source controller comprises single-chip microcomputer, spi bus 1, at least one group of light source control module and light source, wherein, the input of light source control module is all connected with single-chip microcomputer by spi bus 1, after single-chip microcomputer receives external command, be delivered to the DAC chip of light source control module by spi bus 1, and by light source control module, light source regulated and controled.
SPI is the abbreviation of Serial Peripheral Interface (SPI) (Serial Peripheral Interface).SPI is a kind of high speed, full duplex (simultaneously carrying out the transmitted in both directions of signal), synchronous communication bus, and on the pin of chip, only take four lines, and saved the pin of chip, described spi bus 1 has master-slave machine function.
In present embodiment, single-chip microcomputer is main frame, light source control module is from machine, the quantity of light source control module can be unlimited in theory and be connected with single-chip microcomputer by spi bus 1, the inside of light source control module is provided with the DAC chip with SPI communication function, is controlled the brightness of the light source of series connection with it thus by light source control module.
DAC is digital analog converter (English: Digital to analog converter, english abbreviation: DAC) is a kind of equipment digital signal being converted to analog signal (form with electric current, voltage or electric charge).In a lot of digital system (such as computer), signal stores in a digital manner and transmits, and such signal can be converted to analog signal by digital analog converter, thus they can be identified by extraneous (people or other nonnumeric systems).
Light source control module is for controlling light-source brightness fast and stable to set point, and the control circuit of employing is current negative feedback control circuit.Negative feedback output is played and inputs opposite effect, and system is exported and reduces with the error of aims of systems, system tends towards stability.When active computer carries out brilliance control, need computer to send a brightness settings by serial ports, light source controller carries out current constant control according to this set point current negative feedback control circuit, and actual light source brightness and set point are consistent.
In this embodiment, light source controller is in order to increase the speed of switch lamp, light source controller module needs arrange switch lamp line, because this is limited to the common pin number of single-chip microcomputer used, therefore light source control module can not ad infinitum be connected with single-chip microcomputer, generally, tens of groups of light source control module and light source can be expanded.Few and the problem that cannot expand of the integrated PWM port of middle single-chip microcomputer, has great progress compared to existing technology.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned execution mode, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Claims (5)
1. a light source controller, it is characterized in that, described light source controller comprises single-chip microcomputer, spi bus (1), at least one group of light source control module and light source, wherein, single-chip microcomputer is all connected by described spi bus (1) communication with light source with at least one group of light source control module, described single-chip microcomputer is delivered to the DAC chip of light source control module, and is regulated and controled light source by light source control module after receiving external command by spi bus (1).
2. light source controller according to claim 1, is characterized in that, described light source controller comprises at least two group light source control module and light sources, and the input of described light source control module is all connected with single-chip microcomputer by spi bus (1).
3. light source controller according to claim 1, is characterized in that, described light source control module is for controlling light-source brightness fast and stable to set point, and the control circuit of employing is current negative feedback control circuit.
4. light source controller according to claim 1, is characterized in that, described light source control module is provided with switch lamp line.
5. light source controller according to claim 1, is characterized in that, described single-chip microcomputer is connected with computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836895.2A CN104582163A (en) | 2014-12-29 | 2014-12-29 | Light source controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836895.2A CN104582163A (en) | 2014-12-29 | 2014-12-29 | Light source controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104582163A true CN104582163A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410836895.2A Pending CN104582163A (en) | 2014-12-29 | 2014-12-29 | Light source controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN104582163A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108235493A (en) * | 2016-12-22 | 2018-06-29 | 宁波舜宇光电信息有限公司 | Light source adjustment device and its light source controller |
| CN108235530A (en) * | 2016-12-22 | 2018-06-29 | 宁波舜宇光电信息有限公司 | Light source control method |
| WO2020181850A1 (en) * | 2019-03-14 | 2020-09-17 | 苏州德龙激光股份有限公司 | Four-channel led light source controller based on usb communication |
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| CN2353065Y (en) * | 1998-08-25 | 1999-12-08 | 袁应华 | Pin type electric power supply socket and switch |
| CN2862582Y (en) * | 2005-12-12 | 2007-01-24 | 天津卡达克汽车高新技术公司 | Light control device for vehicle network system |
| CN102655707A (en) * | 2012-02-22 | 2012-09-05 | 伍拓山 | Dimming control device for energy-saving lamp |
| JP2013153596A (en) * | 2012-01-25 | 2013-08-08 | Hitachi Ulsi Systems Co Ltd | Charge/discharge monitoring device and battery pack |
| CN203642113U (en) * | 2013-12-13 | 2014-06-11 | 樊健文 | Lamp control device |
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2014
- 2014-12-29 CN CN201410836895.2A patent/CN104582163A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2353065Y (en) * | 1998-08-25 | 1999-12-08 | 袁应华 | Pin type electric power supply socket and switch |
| CN2862582Y (en) * | 2005-12-12 | 2007-01-24 | 天津卡达克汽车高新技术公司 | Light control device for vehicle network system |
| JP2013153596A (en) * | 2012-01-25 | 2013-08-08 | Hitachi Ulsi Systems Co Ltd | Charge/discharge monitoring device and battery pack |
| CN102655707A (en) * | 2012-02-22 | 2012-09-05 | 伍拓山 | Dimming control device for energy-saving lamp |
| CN203642113U (en) * | 2013-12-13 | 2014-06-11 | 樊健文 | Lamp control device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108235493A (en) * | 2016-12-22 | 2018-06-29 | 宁波舜宇光电信息有限公司 | Light source adjustment device and its light source controller |
| CN108235530A (en) * | 2016-12-22 | 2018-06-29 | 宁波舜宇光电信息有限公司 | Light source control method |
| CN108235493B (en) * | 2016-12-22 | 2021-08-10 | 宁波舜宇光电信息有限公司 | Light source adjusting device and light source controller thereof |
| WO2020181850A1 (en) * | 2019-03-14 | 2020-09-17 | 苏州德龙激光股份有限公司 | Four-channel led light source controller based on usb communication |
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Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |