CN204836700U - LED actuating system - Google Patents
LED actuating system Download PDFInfo
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- CN204836700U CN204836700U CN201520587015.2U CN201520587015U CN204836700U CN 204836700 U CN204836700 U CN 204836700U CN 201520587015 U CN201520587015 U CN 201520587015U CN 204836700 U CN204836700 U CN 204836700U
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- led
- led driver
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Abstract
The utility model discloses a LED actuating system includes, a plurality of LED of group banks of DMX512 controller, MCU microprocessor that at least one is connected with the DMX512 controller, the LED driver group that is connected with corresponding MCU microprocessor and LED driver group link. Because the utility model discloses LED actuating system can be through a set of LED driver of MCU microprocessor control group to can simplify PCB the structure, reduce its occupation space, reduce its cost.
Description
Technical field
The utility model relates to LED light emitting control field, is specifically related to a kind of LED drive system.
Background technology
The LED luminescent systems such as existing LED point light source, LED digital guardrail pipe, stage lighting system and decorative lightening system, usual employing DMX512 controller sends DMX512 protocol data, adopts DMX512 decoding chip receipt decoding DMX512 protocol data, then DMX512 decoding chip output pwm signal controls LED drive chip to control the gray scale of one group of LED, however the mode adopting the mode of DMX512 decoding chip and LED drive chip to control one group of LED can cause the complex structure of PCB, take up room large, cost is high.
Utility model content
The purpose of this utility model is to provide a kind of LED drive system, is intended to simplify the structure of PCB, reduces it and take up room, reduce its cost.
In order to realize the purpose of this utility model, the utility model provides a kind of LED drive system, comprising:
DMX512 controller, for the DMX512 protocol data of output packet containing effective gradation data;
The available gray-scale data of intercepting are converted to Manchester code formatted data export for the corresponding available gray-scale data that intercept in DMX512 protocol data by least one MCU microprocessor be connected with DMX512 controller;
The LED driver group be connected with corresponding MCU microprocessor, there is some LED drivers, this some LED driver is connected in series and is connected with corresponding MCU microprocessor, for receiving the Manchester code formatted data of MCU microprocessor output and exporting Manchester code formatted data to next LED driver; And
Some LED groups, each LED group has the LED that some with corresponding LED driver is connected, for regulating the gray scale sending light under the control of LED driver.
Preferably, described MCU microprocessor has input interface and output interface, and input interface is connected with DMX512 controller, for receiving the DMX512 protocol data that DMX512 controller exports; The described LED driver be connected in series is connected with output interface.
Preferably, described LED driver all has input, output and some control ends; Wherein the input of a LED driver is connected with the output interface of MCU microprocessor, the input of other LED driver is sequentially connected with the output of previous LED driver, and some LED of described LED group are connected with the corresponding controling end of corresponding LED driver respectively.
Because the utility model LED drive system can pass through MCU Microprocessor S3C44B0X one group of LED driver group, thus can simplify PCB structure, reduce it and take up room, reduce its cost.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model LED drive system.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme described in the utility model is described in further detail, to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
Refer to Fig. 1, there is disclosed a preferred embodiment of the utility model LED drive system, in the present embodiment, LED drive system comprises DMX512 controller 10, at least one is to the MCU microprocessor 20 that DMX512 controller connects, the LED driver group 30 be connected with corresponding MCU microprocessor 20 and the some groups of LED groups 40 be connected with LED driver group 30.
DMX512 controller 10 is for exporting the gray scale of LED in the mode of DMX512 protocol data.
The quantity of MCU microprocessor 20 is determined according to embody rule.MCU microprocessor 20 has input interface 21 and output interface 22, input interface 21 is connected to receive the DMX512 protocol data that DMX512 controller 10 exports with DMX512 controller 10, MCU microprocessor 20 is exported by its output interface 22 after the DMX512 protocol data of reception is converted to Manchester code formatted data.
Each group LED driver group 30 has some LED drivers 31 be connected in series, and each LED driver 31 has input 32, output 33 and some control ends 34; Wherein the input 32 of a LED driver 31 is connected with the output interface 22 of MCU microprocessor 20, and the input 32 of other LED driver 31 is sequentially connected with the output 33 of previous LED driver 31, thus is connected in series by some LED drivers 31.
Each LED group 40 has some LED 41, and some LED 41 of LED group 40 are connected with the corresponding controling end 34 of corresponding LED driver 31 respectively, to send the gray scale regulating and send light under the control of LED driver 31.
Below the operation principle of the utility model LED drive system is described as follows.
DMX512 controller 10 is for exporting the gray scale of LED in the mode of DMX512 protocol data, one frame of DMX512 protocol data is maximum comprises 512 groups of data segments, and each group data segment form is 11, and wherein first is 0, last two is 1, and 8, centre is the available gray-scale data of the gray scale of LED.
When the quantity of MCU microprocessor 20 is several, because MCU microprocessor 20 is programmable, when programming to MCU microprocessor 20, the address AD DR of each MCU microprocessor 20 and reception data length LEN is defined, the address AD DR of MCU microprocessor 20 intercepts available gray-scale data define according to pre-determining which data segment of one frame from DMX512 protocol data, and the available gray-scale data of how many data segments that the reception data length LEN of MCU microprocessor 20 intercepts as required define.The available gray-scale data in 16 data segments are intercepted 0th data segment of one frame from DMX512 protocol data as predetermined in MCU microprocessor 20, if then the address AD DR of this MCU microprocessor 20 is defined as 0, the reception data length LEN of this MCU microprocessor 20 is defined as 16.The available gray-scale data in 1 data segment are intercepted 16th data segment of one frame from DMX512 protocol data as predetermined in MCU microprocessor 20, if then the address AD DR of this MCU microprocessor 20 is defined as 16, the reception data length LEN of this MCU microprocessor 20 is defined as 1.
When MCU microprocessor 20 intercepts the available gray-scale data of a frame in DMX512 protocol data, whether what first MCU microprocessor 20 judged that DMX512 controller sends is reset frame, low level is kept then to judge to receive reset frame more than 88us at the input interface 21 of MCU microprocessor 20, the level of input interface 21 is driven high afterwards, MCU microprocessor 20 waits for that the level of input interface 21 drags down again, and MCU microprocessor 20 determines that DMX512 controller starts to send DMX512 protocol data.
512 groups of data segments are comprised because a frame in DMX512 protocol data is maximum, each group data segment form is 11, MCU microprocessor 20 receives a 4us consuming time, because each group first of data segment is 0, last two is 1, middle 8 is available gray-scale data, MCU microprocessor 20 controls the sampling time according to 8 instruction 1us consuming time, and MCU microprocessor 20 inserts the delay of 33 instructions after sampling at every turn, the accuracy of each sampling of MCU microprocessor 20 pairs of data segments can be ensured with this, because input interface 21 is high level after 11 of each data segment end of transmissions, MCU microprocessor 20 only needs to detect input interface 21 and moves low level to and then can judge that next data segment arrives and starts the available gray-scale data that intercept in corresponding data section.After a frame in DMX512 protocol data is sent, MCU microprocessor 20 waits for that DMX512 controller 10 sends next reset frame to receive the corresponding data section of next frame.
After all MCU microprocessors 20 are truncated to corresponding available gray-scale data, available gray-scale data are sent to the input 32 of corresponding LED driver 31 with Manchester code formatted data by output interface 22.LED driver 31 will receive Manchester code formatted data by input 32 and transfer pwm signal to, and LED driver 31 controls the gray scale of corresponding LED 41 by control end 34 output pwm signal.And the Manchester code formatted data of reception is also sent Manchester code formatted data by output 33 to the input 32 of next LED driver 31 by LED driver 31.
LED driver 31 quantity of the LED driver group 30 be connected with corresponding MCU microprocessor 20 can be set to the numerical value of the reception data length LEN that corresponding MCU microprocessor 20 is arranged, to regulate the gray scale of a LED group 40 according to the available gray-scale data in a data segment; Also can by arranging corresponding MCU microprocessor 20, MCU microprocessor 20 is made to repeat to send Manchester code formatted data several times, to make the LED group 40 organizing LED driver group 30 corresponding with each have identical gray scale, thus LED driver 31 quantity is set to the number of times that MCU microprocessor 20 repeats to send Manchester code formatted data.
Because the utility model LED drive system can control one group of LED driver group 30 by MCU microprocessor 20, thus can simplify PCB structure, reduce it and take up room, reduce its cost.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (3)
1. a LED drive system, is characterized in that, comprising:
DMX512 controller, for the DMX512 protocol data of output packet containing effective gradation data;
The available gray-scale data of intercepting are converted to Manchester code formatted data export for the corresponding available gray-scale data that intercept in DMX512 protocol data by least one MCU microprocessor be connected with DMX512 controller;
The LED driver group be connected with corresponding MCU microprocessor, there is some LED drivers, this some LED driver is connected in series and is connected with corresponding MCU microprocessor, for receiving the Manchester code formatted data of MCU microprocessor output and exporting Manchester code formatted data to next LED driver; And
Some LED groups, each LED group has the LED that some with corresponding LED driver is connected, for regulating the gray scale sending light under the control of LED driver.
2. LED drive system as claimed in claim 1, it is characterized in that, described MCU microprocessor has input interface and output interface, and input interface is connected with DMX512 controller, for receiving the DMX512 protocol data that DMX512 controller exports; The described LED driver be connected in series is connected with output interface.
3. LED drive system as claimed in claim 1, it is characterized in that, described LED driver all has input, output and some control ends; Wherein the input of a LED driver is connected with the output interface of MCU microprocessor, the input of other LED driver is sequentially connected with the output of previous LED driver, and some LED of described LED group are connected with the corresponding controling end of corresponding LED driver respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520587015.2U CN204836700U (en) | 2015-08-06 | 2015-08-06 | LED actuating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520587015.2U CN204836700U (en) | 2015-08-06 | 2015-08-06 | LED actuating system |
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| Publication Number | Publication Date |
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| CN204836700U true CN204836700U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520587015.2U Expired - Fee Related CN204836700U (en) | 2015-08-06 | 2015-08-06 | LED actuating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761667A (en) * | 2016-03-02 | 2016-07-13 | 大连集思特科技有限公司 | LED intelligent glass video control method |
| CN108834268A (en) * | 2018-08-29 | 2018-11-16 | 深圳智芯半导体科技有限公司 | A kind of method of landscape lamp system and its multiplexed port |
| CN110782804A (en) * | 2018-07-30 | 2020-02-11 | 上海雷舞照明技术有限公司 | Display device and lighting system |
-
2015
- 2015-08-06 CN CN201520587015.2U patent/CN204836700U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761667A (en) * | 2016-03-02 | 2016-07-13 | 大连集思特科技有限公司 | LED intelligent glass video control method |
| CN105761667B (en) * | 2016-03-02 | 2018-05-08 | 大连集思特科技有限公司 | LED intelligent glass video control methods |
| CN110782804A (en) * | 2018-07-30 | 2020-02-11 | 上海雷舞照明技术有限公司 | Display device and lighting system |
| CN108834268A (en) * | 2018-08-29 | 2018-11-16 | 深圳智芯半导体科技有限公司 | A kind of method of landscape lamp system and its multiplexed port |
| CN108834268B (en) * | 2018-08-29 | 2020-06-02 | 深圳智芯半导体科技有限公司 | Landscape lamp system and port multiplexing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160806 |
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| CF01 | Termination of patent right due to non-payment of annual fee |