CN201252667Y

CN201252667Y - Lighting system and lighting apparatus controller

Info

Publication number: CN201252667Y
Application number: CNU2008201465608U
Authority: CN
Inventors: 林惠忠
Original assignee: Shenzhen Displed Tech Co Ltd
Current assignee: Shenzhen Displed Tech Co Ltd
Priority date: 2008-08-07
Filing date: 2008-08-07
Publication date: 2009-06-03
Anticipated expiration: 2018-08-07
Also published as: WO2010015202A1

Abstract

The utility model is suitable for the light illumination field, which provides a lighting system and a lighting apparatus controller, wherein the lighting system comprises a controller and a plurality of lighting apparatuses which are connected with the controller through a data wire, wherein the lighting apparatuses comprise display lamps and drive circuits for controlling the lighting apparatuses, wherein the drive circuits are connected with a power supply through a positive and a negative power supply signal lines, the controller comprises a signal generating unit which controls the drive circuits of the lighting apparatuses through generating data signals of pixel data signals with synchronous display signals and two dutycycles. The lighting system controls the lighting apparatuses through adopting three-line control modes of a positive power supply signal line, a negative power supply signal wire and a single data wire, the integral lighting system achieves the purpose of lowering system cost because of reducing control circuits. The lighting system is suitable for the development trend of product miniaturization, and can be widely applied in LED curtain products.

Description

A kind of lighting system and lamp controller

Technical field

The utility model belongs to the lighting field, relates in particular to a kind of lighting system and lamp controller.

Background technology

In light fixture light modulation and control mode, the control of light fixture has the DMX512 of employing standard, by microcontroller (Micro Controller Unit, MCU) or special-purpose DMX512 integrated circuit (Integrate Circuit, IC) four line traffic control systems of control light fixture, adopt five line traffic control systems of DM413 drive circuit control light fixture, adopt shift register such as 74HC595, ZQL9712 etc., or increase by six line traffic control systems of schemes such as constant current function such as MBI5026 control light fixtures on this basis, all there is the too many problem of control line in above-mentioned each scheme, is not suitable for the development trend of product miniaturization, and it is too high to control cost simultaneously.

The utility model content

The purpose of this utility model is to provide a kind of lighting system, and the control line that is intended to solve light fixture in the present lighting system is too many, the too high problem of controlling cost.

The utility model is to realize like this, a kind of lighting system, comprise controller and a plurality of light fixtures that are connected with described controller by data wire, described light fixture comprises the drive circuit of display lamp and control display lamp, described drive circuit is connected with power supply by positive and negative power supply signal line, and described controller comprises:

The data-signal that includes synchronous shows signal and have a pixel data signal of two kinds of duty ratios by generation is controlled the signal generating unit of the drive circuit of described light fixture.

Another purpose of the present utility model is to provide a kind of lamp controller, and described lamp controller comprises that one produces the signal generating unit that includes the synchronous shows signal and the data-signal of the pixel data signal with two kinds of duty ratios that light fixture is controlled.

In the lighting system that the utility model provides, lighting system adopts the three-way control mode of positive and negative power supply signal line, single lamp data line to control light fixture, control the drive circuit of light fixture by the data-signal that includes pixel data signal and synchronous shows signal by controller, further controlling corresponding light fixture by each drive circuit shows simultaneously, whole system has realized reducing the purpose of system cost owing to reducing control circuit, be fit to the development trend of product miniaturization, can be widely used in LED curtain product.

Description of drawings

Fig. 1 is the structure principle chart of the lighting system that provides of the utility model embodiment;

Fig. 2 is the sequential chart of the control signal that signal generating unit produces in the controller that provides of the utility model embodiment.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Among the utility model embodiment, lighting system adopts the three-way control mode control light fixture of positive and negative power supply signal line, light fixture control data line, by signal generating unit with asynchronous system will include pixel data signal and synchronously the data of shows signal to the drive circuit of each light fixture, control corresponding light fixture by each drive circuit and show simultaneously.

Fig. 1 shows the structural principle of the lighting system that the utility model embodiment provides, and for convenience of description, only shows the part relevant with the utility model embodiment.

Please refer to Fig. 1, lighting system comprises controller 11 and a plurality of light fixture that is connected with controller 11 by data wire, as L1, L2, L3, Ln-1, Ln, wherein light fixture further comprises the drive circuit that display lamp and control display lamp are lighted or extinguished, drive circuit is connected with power supply by positive power signal end VDD, negative power signal end GND, display lamp can for light-emitting diode (Light Emitting Diode, LED) etc.Comprise a signal generating unit in the controller 11, the data-signal that signal generating unit will include driving parameters information and synchronous display message transfers to each light fixture with asynchronous system, as shown in Figure 2, data-signal is made up of pixel data signal and synchronous shows signal, wherein signal T1, T2, T3, Tn-1, Tn are respectively light fixture L1, L2 among Fig. 1, L3, Ln-1, the pairing pixel data signal of Ln, and signal Tt is synchronous shows signal.

The drive circuit of each light fixture is according to the agreement between itself and the controller 11, behind the selective reception pixel data corresponding with it, send the drive circuit of a synchronous shows signal Tt to each light fixture of system at last by signal generating unit, drive circuit is controlled corresponding display lamp (as LED) simultaneously and is lighted.One of them complete data frame signal cycle comprises pixel data cycle and synchronous shows signal cycle.

Among the utility model embodiment, pixel data signal adopts the control mode of two kinds of duty ratios, as shown in Figure 2, when light fixture detects its corresponding pixel data signal and has first kind of duty ratio, the control display lamp is lighted, as signal T1, T2, Tn-1, when detecting its corresponding pixel data signal and have second kind of duty ratio, the control display lamp extinguishes, as signal T3, Tn, and shows signal Tt is lasting high level or lasting low level synchronously, and the duration is greater than a pixel period, synchronously high level state value or low level state value equate in the value of shows signal Tt and the pixel data signal, include two class level in the data-signal.

Data are transmitted with serial mode in the whole lighting system, suppose that signal input part DI, signal output part DO in all lamp driving circuits of the initial condition that powers on remain low level, all display lamps are in and extinguish state, in data transmission procedure, each display lamp keeps current state constant, when drive circuit detects synchronous shows signal Tt, light or extinguish according to the duty ratio control display lamp of the pixel data that receives.When only needing to change the state of first three display lamp, then 3 pixel data signal postposition of controller 11 outputs are the pairing level value of synchronous shows signal Tt, and the like; When only needing to change the state of some display lamps wherein, as the 4th display lamp, then to need the current pixel data of preceding 3 display lamps of output and the control data postposition of the 4th display lamp be the pairing level value of synchronous shows signal Tt to master controller 11.

The utility model embodiment also provides a kind of lamp controller, this lamp controller comprises a signal generating unit, this signal generating unit produces the data-signal that includes pixel data signal and synchronous shows signal that light fixture is controlled, wherein data-signal repeats no more specifically as mentioned above herein.

In sum, in the lighting system that the utility model embodiment provides, lighting system adopts the three-way control mode control light fixture of positive and negative power supply signal line, single light fixture control data line, control the drive circuit of light fixture by the data-signal that includes pixel data signal and synchronous shows signal by signal generating unit, further controlling corresponding light fixture by each drive circuit shows simultaneously, whole system has realized reducing the purpose of system cost owing to reducing control circuit, be fit to the development trend of product miniaturization, can be widely used in LED curtain product.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims

1, a kind of lighting system, comprise controller and a plurality of light fixtures that are connected with described controller by data wire, described light fixture comprises the drive circuit of display lamp and control display lamp, described drive circuit is connected with power supply by positive and negative power supply signal line, it is characterized in that described controller comprises:

2, lighting system as claimed in claim 1 is characterized in that, the synchronous shows signal that described signal generating unit produces continues high level or continues the low level time greater than a pixel period.

3, lighting system as claimed in claim 1 or 2 is characterized in that, described display lamp is LED.

4, a kind of lamp controller is characterized in that, described lamp controller comprises that one produces the signal generating unit that includes the synchronous shows signal and the data-signal of the pixel data signal with two kinds of duty ratios that light fixture is controlled.

5, lamp controller as claimed in claim 4 is characterized in that, the synchronous shows signal that described signal generating unit produces continues high level or continues the low level time greater than a pixel period.