CN103152927A - Light-emitting diode (LED) lamp and light-dimming method thereof - Google Patents
Light-emitting diode (LED) lamp and light-dimming method thereof Download PDFInfo
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- CN103152927A CN103152927A CN2013100530658A CN201310053065A CN103152927A CN 103152927 A CN103152927 A CN 103152927A CN 2013100530658 A CN2013100530658 A CN 2013100530658A CN 201310053065 A CN201310053065 A CN 201310053065A CN 103152927 A CN103152927 A CN 103152927A
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Abstract
The invention discloses a light-emitting diode (LED) lamp and a light-dimming method thereof. The light-dimming method of the LED lamp comprises the following steps of: a corresponding light-dimming signal is determined to be supplied to a light-dimming circuit according to a received light-dimming trigger signal and stored, when an LED power source is turned on again after being turned off, the brightness of the LED power source is controlled to the brightness corresponding to the stored light-dimming signal before the power source is turned off, and accordingly, the brightness readjustment of the LED power source is avoided when the LED power source is turned on again. Particularly, the operation is simple and convenient when the LED power source needs to be kept in low brightness.
Description
Technical field
The application relates to the LED lighting technical field, particularly relates to a kind of LED lamp and light-dimming method thereof.
Background technology
At present, the LED lamp with dimming function that occurs on the market generally all adopts knob to carry out light modulation, when turning off the LED lamp, reopen the LED lamp next time, and when carrying out light modulation, still need to begin to regulate from high-high brightness, when the brightness preservation of LED lamp during in darker brightness, complicated operation.
In addition, the LED lamp that has on the market dimming function is to adopt PWM(Pulse Width Modulation, pulse width modulation) mode realizes light modulation, concrete, the electric current that exports the LED lamp to is carried out DC chopped-wave, the average current on the LED lamp is changed with the variation of the duty ratio of pwm pulse signal, concrete, the duty ratio of pwm pulse signal is less, and the average current that the LED lamp obtains is less.But in the low-light level situation, the phenomenon of high frequency flicker will appear in the light that the LED lamp sends, although the people visually observe less than, this high frequency flicker still has certain damage to people's eyes, and influential to eyesight.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of LED lamp and light-dimming method thereof, and the brightness when realizing that the LED lamp is opened is the brightness before extinguishing as the LED lamp, thereby needn't readjust light-source brightness, and simple to operate, its technical scheme is as follows:
The application provides a kind of LED lamp, comprising: power key, at least one light modulation key, light adjusting circuit, control circuit, memory cell and LED light source, and wherein, described power key and described light modulation key are arranged on the control panel of described LED lamp;
Described control circuit, be used for when receiving the operator and trigger the power supply triggering signal of described power key generation, detect the state of described light adjusting circuit, control according to the state generation of described light adjusting circuit the state control signal that described LED light source is lighted or extinguished, and offer described light adjusting circuit; And be used for, when receiving the light modulation triggering signal that triggers a described light modulation key generation, determine dim signal corresponding to described light modulation triggering signal, described dim signal is provided to described light adjusting circuit, and be stored in described memory cell;
Described light adjusting circuit is for control the size of the electric current that exports described LED light source to according to the described state control signal that receives or dim signal.
Preferably, the dim signal of described control circuit output is level signal, and the different brightness degrees of the corresponding described LED light source of the different amplitudes of described dim signal.
Preferably, described control circuit specifically is used for, and when receiving described power supply triggering signal, detects the output state of described light adjusting circuit, when described light adjusting circuit being detected and be in the first state of output current, produce and control the state control signal that extinguishes that described LED light source extinguishes; When described light adjusting circuit being detected and be in the second state of output current not, produce and control the illuminating state control signal that described LED light source is lighted.
Preferably, described power key and described light modulation key are membrane keyboard.
Preferably, when described light modulation key when being a plurality of, a brightness degree of the corresponding LED light source of each light modulation key.
The application also provides a kind of LED lamp light-dimming method, and described LED lamp comprises power key, at least one light modulation key, LED light source and light adjusting circuit at least, and described method comprises:
Receive the triggering signal that the operator triggers described power key or the generation of light modulation key, and judge the type of described triggering signal;
When judging described triggering signal and trigger for the operator light modulation triggering signal that the light modulation key produces, determine the dim signal corresponding with described light modulation triggering signal;
Described dim signal is offered described light adjusting circuit, and store described dim signal;
When judging the described triggering signal power supply triggering signal that described power key produces for the operator triggers, detect the output state of described light adjusting circuit;
When the output state of described light adjusting circuit is the second state of not output current, produce the illuminating state control signal, so that extinguishing the dim signal of front storage, described LED light source offers described light adjusting circuit.
Preferably, above-mentioned LED lamp light-dimming method also comprises: when described light adjusting circuit being detected and be in the first state of output current, produce according to described power supply triggering signal and extinguish state control signal, control described light adjusting circuit and stop output current, extinguish to control LED light source.
Preferably, after the reception operator triggers the triggering signal of described power key or the generation of light modulation key, also comprise:
Whether the number that judges described triggering signal is one, if judge the type of described triggering signal; Otherwise, control described light adjusting circuit and keep current state.
Preferably, described dim signal is level signal, and the different brightness of the corresponding LED light source of the dim signal of different amplitudes.
The technical scheme that is provided by above the embodiment of the present application as seen, described LED lamp and light-dimming method thereof, according to the light modulation triggering signal that receives, determine that corresponding dim signal offers light adjusting circuit, and store described dim signal, when reopening after described LED light source extinguishes, control the brightness of described LED light source to extinguishing brightness corresponding to the front dim signal of storing, thereby when having avoided restarting LED light source, needn't readjust the brightness of LED light source, especially when the needs LED light source remains on darker brightness, simple, convenient.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, the accompanying drawing that the following describes is only some embodiment that put down in writing in the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of LED lamp of the embodiment of the present application;
Fig. 2 is the structural representation of the control panel of a kind of LED lamp of the embodiment of the present application;
Fig. 3 is the schematic flow sheet of a kind of LED lamp of the embodiment of the present application light-dimming method.
Embodiment
The application provides a kind of LED lamp, comprising: power key, at least one light modulation key, light adjusting circuit, control circuit, memory cell and LED light source, and wherein, described power key and described light modulation key are arranged on the control panel of described LED lamp;
Described control circuit, be used for when receiving the operator and trigger the power supply triggering signal of described power key generation, detect the state of described light adjusting circuit, control according to the state generation of described light adjusting circuit the state control signal that described LED light source is lighted or extinguished, and offer described light adjusting circuit;
Concrete, when described light adjusting circuit being detected and be in the first state of output current, produce and control the state control signal that extinguishes that described LED light source extinguishes; When described light adjusting circuit being detected and be in the second state of output current not, produce and control the illuminating state control signal that described LED light source is lighted.
Described control circuit also is used for determining dim signal corresponding to described light modulation triggering signal when receiving the light modulation triggering signal that triggers a described light modulation key generation, described dim signal is offered described light adjusting circuit, and be stored in described memory cell;
Described light adjusting circuit is used for the state according to the described state control signal that receives or described dim signal control output current.
Concrete, after described light adjusting circuit receives the illuminating state control signal, the corresponding direct current of dim signal of output and cell stores, driving LED light source; When described light adjusting circuit receive extinguish state control signal after, stop output DC stream; After described light adjusting circuit receives dim signal, export the direct current corresponding with described dim signal to drive described LED light source.
The application also provides a kind of LED lamp light-dimming method, and described LED lamp comprises at least: power key, at least one light modulation key, LED light source and light adjusting circuit, and described method comprises:
Receive the triggering signal that the operator triggers described power key or the generation of light modulation key, and judge the type of described triggering signal;
When judging described triggering signal and trigger for the operator light modulation triggering signal that the light modulation key produces, determine the dim signal corresponding with described light modulation triggering signal;
Described dim signal is offered described light adjusting circuit, and store described dim signal;
When judging the described triggering signal power supply triggering signal that described power key produces for the operator triggers, detect the output state of described light adjusting circuit;
When the output state of described light adjusting circuit is the second state of not output current, produce the illuminating state control signal, so that extinguishing the dim signal of front storage, described LED light source offers described light adjusting circuit.
The LED lamp light-dimming method that the application provides, exchanging the dim signal of photoreduction process generation stores, when reopening after the LED lamp extinguishes, the direct current corresponding to dim signal of front storage extinguished in the output of light adjusting circuit acquiescence, so that the brightness of LED lamp maintains the brightness degree before extinguishing, thereby avoided the LED lamp to restart, and need to transfer to than low-light level the time, re-start the light modulation operation, simple to operate.
In order to make those skilled in the art person understand better technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Based on the embodiment in the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the application's protection.
See also Fig. 1 and Fig. 2, Fig. 1 shows the structural representation of LED lamp; Fig. 2 shows the structural representation of the control panel of described LED lamp.
Described LED lamp comprises power key 1, at least one light modulation key 2, LED light source 3, control circuit 4, memory cell 5, light adjusting circuit 6.
Described power key 1 and at least one light modulation key 2 are arranged on the control panel of LED lamp, and both all can realize by membrane keyboard.
When the operator triggers power key 1, produce the power supply triggering signal; When the operator triggers light modulation key 2, produce the light modulation triggering signal, and, a brightness degree of each light modulation key 2 corresponding LED light source.Control circuit 4 comprises first input end, at least one second input, and output, and wherein, described first input end is used for receiving described power supply triggering signal; Each second input is used for receiving the light modulation triggering signal that corresponding light modulation key produces; The output of control circuit 4 is connected with the input of described light adjusting circuit 6, and being used for provides control signal to light adjusting circuit, and described control signal can be dim signal or state control signal.
Concrete, described control circuit 4 can pass through chip microcontroller, when the operator triggers the power supply triggering signal that power key produces, be delivered to control circuit, control circuit detects the state of light adjusting circuit, produce corresponding state control signal, described state control signal comprises the illuminating state control signal and extinguishes state control signal.
Produce different light modulation triggering signals when the operator triggers different light modulation keys, be delivered to the different inputs of control circuit, control circuit is determined corresponding dim signal according to the defeated end of the light modulation triggering signal that receives, and then controls the brightness degree of LED light source.Concrete, the course of work of described control circuit 4 is as follows:
Receive the operator and trigger the triggering signal that described power key 1 and/or light modulation key 2 produce, the number of the described triggering signal of judgement when if the number of described triggering signal is a plurality of, is controlled described LED light source and is kept current state.
If when judging the number of described triggering signal and being one, continue the type of the described triggering signal of judgement, described triggering signal comprises power supply triggering signal and light modulation triggering signal.
When the type of judging described triggering signal is the light modulation triggering signal, determines dim signal corresponding to described light modulation triggering signal, and be stored to described memory cell 5.
Concrete, described memory cell 5 can be the cover type storage mode, namely only preserves the dim signal that receives for the last time in memory cell 5.
Described dim signal is offered described light adjusting circuit 6, to control the light adjusting circuit 6 output direct currents corresponding with described dim signal, the amplitude of the direct current that different dim signals is corresponding is different, thereby makes the brightness of LED light source different, and then realizes dimming function.
When the type of judging described triggering signal is the power supply triggering signal, further judge whether described light adjusting circuit 6 is the first state of output current, if output is extinguished state control signal to light adjusting circuit 6, so that light adjusting circuit stops output current, and then LED light source is extinguished.
Be in not the second state of output current if judge light adjusting circuit 6, output is lighted state control signal to light adjusting circuit 6, so that the electric current corresponding to dim signal of storage in the described memory cell 5 of dim signal output.
The LED lamp that the present embodiment provides, carrying out preserving dim signal after the light modulation operation, so, when reopening the LED lamp, can make the brightness of brightness preservation before extinguishing of LED light source, when needs make the brightness of LED lamp maintain a lower brightness, need not to readjust the brightness of LED light source, simple to operate.
Dim signal in above-described embodiment is level signal, the brightness of the different brackets of the corresponding LED light source of different amplitudes of level signal, the i.e. different amplitudes of the direct current of the corresponding light adjusting circuit output of the different amplitudes of level signal.And level signal makes arbitrary brightness of LED lamp the high frequency flicker phenomenon can not occur, and human eye and eyesight are had certain protective effect.
The application also provides a kind of LED light-dimming method, sees also Fig. 3, shows LED lamp light-dimming method schematic flow sheet, and described LED lamp comprises power key, at least one light modulation key, LED light source and light adjusting circuit at least.
Described LED lamp light-dimming method comprises the following steps:
101, receive the triggering signal that the operator triggers power key and/or the generation of light modulation key;
When the operator triggers power key, produce the power supply triggering signal; When the operator triggers the light modulation key, produce dim signal;
Concrete, can be the different brightness degrees of the corresponding LED light source of light modulation triggering signal that produces of a plurality of, different light modulation keys due to the number of light modulation key.
102, whether the number of the triggering signal that judgement receives is one, if execution in step 103, otherwise, execution in step 109;
103, judge whether the type of described triggering signal is the light modulation triggering signal, if execution in step 104; Otherwise, carry out the step 106.
104, determine corresponding dim signal according to the described light modulation triggering signal that receives;
Because the light modulation key can be a plurality of, the different brightness degrees of the corresponding LED light source of different light modulation keys, determine corresponding dim signal by described light modulation triggering signal, and then control the amplitude of the direct current of light adjusting circuit output according to this dim signal, finally control the brightness of LED light source.
Preferably, described dim signal is level signal, and the amplitude of the level signal that different dim signals is corresponding is different, and then controls the different direct current of light adjusting circuit output amplitude.
105, the dim signal that step 104 is determined offers described light adjusting circuit, and stores described dim signal;
106, judge whether the output state of described light adjusting circuit is the first state, if carry out the step 107; Otherwise, execution in step 108.
Described the first state is the state of described light adjusting circuit output current, and described light adjusting circuit is not or not second state during output current.
107, store current dim signal, and produce the control signal of extinguishing that the described light adjusting circuit of control stops output current.
108, produce the illuminating state control signal of controlling described light adjusting circuit output current.
When again lighting after the LED lamp extinguishes, direct current corresponding to the front dim signal of storing extinguished in the output of described light adjusting circuit acquiescence, LED light source maintained extinguish front brightness degree.
109, control described light adjusting circuit and keep current state.
Need to prove, the LED lamp light-dimming method that the present embodiment provides is the once-through operation process that receives triggering signal, the method execution that can circulate is all to return to the step that execution receives new triggering signal again after the step 105,108,109 of the present embodiment.
The LED lamp light-dimming method that the present embodiment provides, when receiving the power supply triggering signal, and when light adjusting circuit being detected and being in the state of output current not, control direct current corresponding to dim signal before light adjusting circuit output LED lamp extinguishes, namely when the LED lamp reopens, the brightness that can make the LED lamp is to extinguish brightness degree corresponding to the dim signal of front storage, thereby need not to carry out the light modulation operation, and is simple to operate.
Need to prove, in this article, relational terms such as the first and second grades only is used for an entity or operation are separated with another entity or operating space, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or operation.
The above is only the application's embodiment; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection range.
Claims (9)
1. a LED lamp, is characterized in that, comprising: power key, at least one light modulation key, light adjusting circuit, control circuit, memory cell and LED light source, and wherein, described power key and described light modulation key are arranged on the control panel of described LED lamp;
Described control circuit, be used for when receiving the operator and trigger the power supply triggering signal of described power key generation, detect the state of described light adjusting circuit, control according to the state generation of described light adjusting circuit the state control signal that described LED light source is lighted or extinguished, and offer described light adjusting circuit; And be used for, when receiving the light modulation triggering signal that triggers a described light modulation key generation, determine dim signal corresponding to described light modulation triggering signal, described dim signal is provided to described light adjusting circuit, and be stored in described memory cell;
Described light adjusting circuit is used for controlling the size of the electric current that exports described LED light source to according to the described state control signal or the dim signal that receive.
2. LED lamp according to claim 1, is characterized in that, the dim signal of described control circuit output is level signal, and the different brightness degrees of the corresponding described LED light source of the different amplitudes of described dim signal.
3. LED lamp according to claim 1, it is characterized in that, described control circuit specifically is used for, when receiving described power supply triggering signal, detect the output state of described light adjusting circuit, when described light adjusting circuit being detected and be in the first state of output current, produce and control the state control signal that extinguishes that described LED light source extinguishes; When described light adjusting circuit being detected and be in the second state of output current not, produce and control the illuminating state control signal that described LED light source is lighted.
4. LED lamp according to claim 1, is characterized in that, described power key and described light modulation key are membrane keyboard.
5. LED lamp according to claim 1, is characterized in that, when described light modulation key when being a plurality of, and a brightness degree of the corresponding described LED light source of each light modulation key.
6. a LED lamp light-dimming method, is characterized in that, described LED lamp comprises power key, at least one light modulation key, LED light source and light adjusting circuit at least, and described method comprises:
Receive the triggering signal that the operator triggers described power key or the generation of light modulation key, and judge the type of described triggering signal;
When judging described triggering signal and trigger for the operator light modulation triggering signal that the light modulation key produces, determine the dim signal corresponding with described light modulation triggering signal;
Described dim signal is offered described light adjusting circuit, and store described dim signal;
When judging the described triggering signal power supply triggering signal that described power key produces for the operator triggers, detect the output state of described light adjusting circuit;
When the output state of described light adjusting circuit is the second state of not output current, produce the illuminating state control signal, so that extinguishing the dim signal of front storage, described LED light source offers described light adjusting circuit.
7. LED lamp light-dimming method according to claim 6, it is characterized in that, also comprise: when described light adjusting circuit being detected and be in the first state of output current, produce according to described power supply triggering signal and extinguish state control signal, control described light adjusting circuit and stop output current, extinguish to control LED light source.
8. LED lamp light-dimming method according to claim 6, is characterized in that, after the reception operator triggers the triggering signal of described power key or the generation of light modulation key, also comprises:
Whether the number that judges described triggering signal is one, if judge the type of described triggering signal; Otherwise, control described light adjusting circuit and keep current state.
9. LED lamp light-dimming method according to claim 6, is characterized in that, described dim signal is level signal, and the different brightness of the corresponding described LED light source of the dim signal of different amplitudes.
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Cited By (1)
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CN105392239A (en) * | 2015-12-23 | 2016-03-09 | 冷俊 | Lamp brightness control method and LED lamp with brightness adjusting function |
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CN202005036U (en) * | 2011-03-31 | 2011-10-05 | 蔡国伟 | Energy-saving lighting controller in classroom |
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CN2720758Y (en) * | 2004-08-17 | 2005-08-24 | 惠州雷士工业发展有限公司 | Lamp light-regulation switch |
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