CN102905442A - Light emitting diode lamp and method for controlling light emission thereof - Google Patents

Light emitting diode lamp and method for controlling light emission thereof Download PDF

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Publication number
CN102905442A
CN102905442A CN2012104245244A CN201210424524A CN102905442A CN 102905442 A CN102905442 A CN 102905442A CN 2012104245244 A CN2012104245244 A CN 2012104245244A CN 201210424524 A CN201210424524 A CN 201210424524A CN 102905442 A CN102905442 A CN 102905442A
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circuit unit
current
output
resistance
input
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CN2012104245244A
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CN102905442B (en
Inventor
封正勇
龙文涛
李东明
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Sichuan Sunfor Light Co Ltd
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Sichuan Sunfor Light Co Ltd
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Priority to CN201210424524.4A priority Critical patent/CN102905442B/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The invention discloses a light emitting diode (LED) lamp and a method for controlling light emission thereof. An intelligent control time delay circuit unit in the LED lamp is used for triggering a second current limiting circuit unit to keep a disconnection state when detecting that the illumination brightness is less than a preset illumination brightness threshold value, and switching a first current limiting circuit unit connected in parallel with the second current limiting circuit unit to enter a connection state; when the illumination brightness is less than a time period of the preset illumination brightness threshold value, if detecting that the sound intensity is more than the preset sound intensity threshold value, the intelligent control time delay circuit unit is used for triggering the second current limiting circuit unit to enter the connection state; and a rectifier circuit unit is used for rectifying the received voltage and current signals and then outputting the voltage and current signals to an LED light source module circuit unit to ensure that the LED light source module circuit unit illuminates according to the rectified voltage and current signals. By applying the invention, the illumination effect of the LED lamp can be improved.

Description

Led lamp and the luminous method of control led lamp
Technical field
The present invention relates to light-emitting diode (LED, Light Emitting Diode) technology, relate in particular to a kind of led lamp and the luminous method of control led lamp.
Background technology
Liquid crystal display (LCD, Liquid Crystal Display) need to arrange light emitting source at the LCD panel originally as non-luminous display element, just can reach effect luminous and that show.Usually, backlight module (BLU, Back Light Unit) the lamp bar is the optical module that back side light source is provided to LCD, BLU receives light-emitting diode (LED, Light Emitting Diode), cold-cathode fluorescence lamp (CCFL, Cold Cathode Fluorescent Lamp) or electroluminescence element (EL, ElectroLuminescence) three kinds of light sources that mode provides, light is reflected and optically focused, form light emitting source, and be arranged on the LCD panel, form led lamp by the LCD panel, in order to the light source of the required brightness of illumination to be provided.
In some public places, the led lamp that uses in the illuminator such as corridor, parking lot, in order effectively to reduce the power consumption of led lamp, light-operated or the light-operated led lamp that combines with the acoustic control induction of existing main use is used for illumination, namely in led lamp, light-operated inductor or light-operated and acoustic control inductor are installed.Wherein, light-operated method is for such led lamp light-operated inductor to be set, judge the ambient brightness at led lamp place by light-operated inductor, when light-operated inductor detects the illumination deficiency, for example, detect illumination brightness less than the illumination luminance threshold that sets in advance, to controller output trigger message, controller is opened the power supply of (conducting) led lamp according to trigger message, light led lamp.And light-operated method with combining with acoustic control induction is when light-operated inductor detects illumination and satisfies, not to controller output trigger message, thereby trigger controller is not opened the power supply of led lamp, light led lamp, but continue on this basis monitoring, until detected pedestrian or vehicle process (having sound to transmit), just to controller output trigger message, trigger controller is connected the power supply of led lamp, lights led lamp.
By as seen above-mentioned, existing led lamp, if control the unlatching of led lamp by light-operated mode, owing to only controlling according to intensity of illumination, after the led lamp unlatching is thrown light on, may not have pedestrian or vehicle process, thereby, cause the waste of the energy, energy-saving efficiency is lower; And the light fixture that uses light-operated and acoustic control induction to combine, sensing the people through (having sound to transmit), just triggering the led lamp unlatching throws light on, although effective energy savings, improve energy-saving efficiency, but because the effective range of light-operated inductor sensing human body (sound) is limited, when pedestrian or vehicle do not enter in the sensing range, led lamp is in closed condition, and environment is in dark state, so that pedestrian or vehicle are in the period before in entering sensing range, can not get illumination, affect the driving safety of pedestrian or vehicle, so that the illuminating effect of led lamp is relatively poor, be difficult to the illuminating effect that reaches desirable; Further, when pedestrian or vehicle entered in the sensing range, led lamp was opened illumination, allowed the driver of pedestrian or steering vehicle because the unexpected variation of light, cause because led lamp is lighted suddenly and caused sense of discomfort, thereby affect travel safety.
Summary of the invention
Embodiments of the invention provide a kind of led lamp, promote the illuminating effect of led lamp.
Embodiments of the invention also provide a kind of method of controlling led lamp, promote the illuminating effect of led lamp.
For achieving the above object, a kind of luminous method of led lamp of controlling that the embodiment of the invention provides comprises:
The Based Intelligent Control time delay circuit unit is when detecting illumination brightness less than the illumination luminance threshold that sets in advance, trigger the second current-limiting circuit unit and remain open connection status, switch the first current-limiting circuit unit in parallel with the second current-limiting circuit unit and enter connection status;
The rectification circuit unit exports led light source modular circuit unit to after voltage, the current signal of the first current-limiting circuit unit output carried out rectification, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification;
The Based Intelligent Control time delay circuit unit if detect sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, triggered switching the second current-limiting circuit unit and enters connection status within the time period of illumination brightness less than the illumination luminance threshold that sets in advance;
After voltage, the current signal that the rectification circuit unit is exported the first current-limiting circuit unit and the second current-limiting circuit unit of parallel connection carries out rectification, export led light source modular circuit unit to, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification.
Wherein, switch after the second current-limiting circuit unit enters the step of connection status in described triggering, the method further comprises:
Delay time according to the delay time that sets in advance, at delay time then, trigger switching the second current-limiting circuit unit and enter off-state.
Wherein, after described voltage, current signal are carried out rectification, export to before the step of led light source modular circuit unit, further comprise:
Voltage, the current signal of the rectification of rectification circuit unit output carried out filtering to be processed.
Wherein, described method further comprises:
The Based Intelligent Control time delay circuit unit detects sound intensity intensity and is less than or equal to the sound intensity intensity threshold that sets in advance, and triggers switching the second current-limiting circuit unit and enters off-state.
Wherein, described method further comprises:
The Based Intelligent Control time delay circuit unit detects illumination brightness more than or equal to the illumination luminance threshold that sets in advance, and triggers switching the first current-limiting circuit unit and enters off-state.
A kind of light-emitting diode (LED) lamp, this LED light fixture comprises: Based Intelligent Control time delay circuit unit, the first current-limiting circuit unit, the second current-limiting circuit unit, rectification circuit unit and led light source modular circuit unit, wherein,
The input of Based Intelligent Control time delay circuit unit links to each other with the zero line side of alternating current, and the first output links to each other with the input of the first current-limiting circuit unit, and the second output links to each other with the second input of the second current-limiting circuit unit; The first input end of the second current-limiting circuit unit links to each other with the zero line side of alternating current, and output links to each other with the output of the first current-limiting circuit unit; The output of the first current-limiting circuit unit links to each other with the second input of rectification circuit unit; The first input end of rectification circuit unit links to each other with the input live wire end of alternating current, and the first output links to each other with the first input end of led light source modular circuit unit, and the second output links to each other with the second input of led light source modular circuit unit;
The Based Intelligent Control time delay circuit unit, be used for when detecting illumination brightness less than the illumination luminance threshold that sets in advance, trigger the second current-limiting circuit unit and remain open connection status, switch the first current-limiting circuit unit in parallel with the second current-limiting circuit unit and enter connection status;
Within the time period of illumination brightness less than the illumination luminance threshold that sets in advance, if detect sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, trigger switching the second current-limiting circuit unit and enter connection status;
The rectification circuit unit after voltage, the current signal that is used for receiving carries out rectification, exports led light source modular circuit unit to, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification.
Described Based Intelligent Control time delay circuit unit is detecting sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, after triggering switching the second current-limiting circuit unit enters connection status, be further used for delaying time according to the delay time that sets in advance, at delay time then, trigger switching the second current-limiting circuit unit and enter off-state.
Further comprise:
The filter circuit unit after being used for voltage, current signal to the rectification of rectification circuit unit output and carrying out filtering and process, exports led light source modular circuit unit to.
Further comprise:
The input protection circuit unit is used for the alternating current of input is carried out overcurrent protection.
Described protective circuit unit is made of fuse and piezo-resistance series connection; the one termination alternating current input live wire end of fuse; the other end links to each other with an end of piezo-resistance and the first input end of rectification circuit unit, and the other end of piezo-resistance inputs the input of zero line side, Based Intelligent Control time delay circuit unit with alternating current and the first input end of the second current-limiting circuit unit links to each other.
Described Based Intelligent Control time delay circuit unit comprises: voltage stabilizing didoe, rectifier diode, electrochemical capacitor, the first resistance, electret, the first electric capacity, the second electric capacity, the second resistance, the 3rd electric capacity, the 3rd resistance, diode, the first not gate, the second not gate, the 3rd not gate, the 4th not gate, the 5th not gate, the 6th not gate, the 4th resistance and the 4th electric capacity, wherein
The positive pole of voltage stabilizing didoe is connected with the second output of protective circuit unit, and this tie point is as reference ground VSS point;
The negative pole of voltage stabilizing didoe is connected with the input anodal and the first current-limiting circuit unit of rectifier diode;
The positive pole of electrochemical capacitor is connected with the negative pole of rectifier diode, and the negative pole of electrochemical capacitor is connected with reference ground VSS point;
One end of the first resistance is connected with the negative pole of rectifier diode, and the other end is connected with an end of electret and an end of the first electric capacity;
The other end of electret is connected with reference ground VSS point;
The other end of the first electric capacity is connected with an end of the second electric capacity, an end of the second resistance and the input of the first not gate respectively;
The other end of the second electric capacity is connected with the other end of the second resistance, the output of the first not gate and the input of the second not gate respectively;
The output of the second not gate is connected with an end of the 3rd electric capacity;
The other end of the 3rd electric capacity is connected with an end of the 3rd resistance;
The other end of the 3rd resistance is connected with an end of the 4th resistance and the input of the 3rd not gate respectively;
The other end of the 4th resistance is connected with reference ground VSS point;
The output of the 3rd not gate is connected with the input of the 4th not gate;
The output of the 4th not gate is connected with the positive pole of diode;
The negative pole of diode is connected with the input of the 5th not gate;
The output of the 5th not gate is connected with the input of the 6th not gate;
The output of the 6th not gate is connected with an end of the 4th electric capacity;
The other end of the 4th electric capacity is connected with reference ground VSS point;
The output of the 6th not gate is as the second output of Based Intelligent Control time delay circuit unit, and output signal is controlled the operating state of the second current-limiting circuit unit.
Described Based Intelligent Control time delay circuit unit further comprises the 5th resistance and the 5th electric capacity for elimination high level signal noise, wherein,
One end of the 5th resistance links to each other with the output of the 5th not gate, and the other end of the 5th resistance is connected with an end of the 5th electric capacity and the input of the 6th not gate respectively; The other end of the 5th electric capacity is connected with reference ground VSS point.
Described Based Intelligent Control time delay circuit unit further comprises the 6th resistance and the 6th electric capacity for time-delay, wherein,
One end of the 6th resistance is connected with the negative pole of diode, the input anodal and the 5th not gate of electrolysis the 6th electric capacity respectively;
The negative pole of the other end of the 6th resistance and electrolysis the 6th electric capacity is connected with reference ground VSS point.
Described the first current-limiting circuit unit comprises: the first resistance, electric capacity and the second resistance, wherein,
One end of the first resistance is connected with an end of electric capacity and the first output of Based Intelligent Control time delay circuit unit respectively, the other end of the first resistance is connected with the other end of electric capacity and an end of the second resistance respectively, the other end of the second resistance is connected to the second input of rectification circuit unit as the output of the first current-limiting circuit unit.
Described the second current-limiting circuit unit comprises: the first resistance, controllable silicon, the second resistance, inductance and electric capacity, wherein,
The silicon controlled first input end is connected with the second output of protective circuit unit, and silicon controlled the second input is connected with an end of the first resistance, and the other end of the first resistance is connected with the second output of Based Intelligent Control time delay circuit unit;
The silicon controlled output is connected with an end of the second resistance and an end of electric capacity respectively, the other end of the second resistance is connected with the other end of electric capacity and an end of inductance respectively, the other end of inductance is connected to the second input of rectification circuit unit as the output of the second current-limiting circuit unit.
Described rectification circuit unit comprises: the first diode, the second diode, the 3rd diode and the 4th diode, wherein,
The negative pole of the positive pole of the first diode and the 3rd diode links together, and as the first input end of rectification circuit unit, is connected with the first output of protective circuit unit; The negative pole of the negative pole of the first diode and the second diode links together, as the first output of rectification circuit unit; The negative pole of the positive pole of the second diode and the 4th diode links together, as the second input of rectification circuit unit; The positive pole of the positive pole of the 3rd diode and the 4th diode links together, as the second output of rectification circuit unit.
Described filter circuit unit comprises: inductance and electrochemical capacitor, wherein,
One end of inductance is connected with the first output of rectification circuit unit, and the other end of inductance is connected with the positive pole of electrochemical capacitor, as the first output of filter circuit unit;
The negative pole of electrochemical capacitor is connected with the second output of rectification circuit unit, as the second output of filter circuit unit.
Described filter circuit unit further comprises:
Resistance, an end are connected with the first output of rectification circuit unit and an end of inductance respectively, and the other end is connected with the second output of rectification circuit unit and the negative pole of electrochemical capacitor respectively, as the second output of filter circuit unit.
Described led light source modular circuit unit comprises: LED lamp pearl to a N LED lamp pearl, and wherein, N is the natural number greater than 1,
The input of the one LED lamp pearl is connected with the first output of filter circuit unit and the input of the 2nd LED lamp pearl respectively, the output of the one LED lamp pearl is connected with the output of the 2nd LED lamp pearl, the output of the one LED lamp pearl links to each other with the input of the 3rd LED lamp pearl, the output of the 2nd LED lamp pearl links to each other with the input of the 4th LED lamp pearl, the output of the 3rd LED lamp pearl is connected with the output of the 4th LED lamp pearl, so circulation is until the output of (N-1) LED lamp pearl is connected with the output of N LED lamp pearl and the second output of filter circuit unit respectively.
Described electret is pyroelectric infrared sensor.
Described electret is pyroelectric infrared sensor, and described the 4th resistance is photo resistance.
As seen from the above technical solution, a kind of led lamp that the embodiment of the invention provides and the luminous method of control led lamp, this LED light fixture comprises: the Based Intelligent Control time delay circuit unit, the first current-limiting circuit unit, the second current-limiting circuit unit, rectification circuit unit and led light source modular circuit unit, wherein, the Based Intelligent Control time delay circuit unit is when detecting illumination brightness less than the illumination luminance threshold that sets in advance, trigger the second current-limiting circuit unit and remain open connection status, switch the first current-limiting circuit unit in parallel with the second current-limiting circuit unit and enter connection status, make led lamp that less illumination brightness can be provided, like this, when pedestrian or vehicles failed enter in the sensing range, the illumination of certain brightness can be provided, thereby the lifting driving safety also promotes the illuminating effect of led lamp; Within the time period of illumination brightness less than the illumination luminance threshold that sets in advance, if detect sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, trigger switching the second current-limiting circuit unit and enter connection status; The rectification circuit unit exports led light source modular circuit unit to after voltage, the current signal that receives carried out rectification, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification.Like this, brightness is strengthened gradually, more can satisfy pedestrian or driver to the comfortableness requirement of illumination brightness.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Apparently, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of embodiment of the invention LED light fixture.
Fig. 2 is the first structural representation of embodiment of the invention LED lamp circuit.
Fig. 3 is the waveform voltage signal schematic diagram of the embodiment of the invention behind over commutation.
Fig. 4 is that the embodiment of the invention is through filtered waveform voltage signal schematic diagram.
Fig. 5 is the second structural representation of embodiment of the invention LED lamp circuit.
Fig. 6 is the 3rd structural representation of embodiment of the invention LED lamp circuit.
Fig. 7 is the method flow schematic diagram of embodiment of the invention control LED lamp luminescence.
Embodiment
Below with reference to accompanying drawing the technical scheme of various embodiments of the present invention is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the present invention protects.
Existing led lamp, use the light-operated led lamp that combines with the acoustic control induction, detecting on the basis of illumination brightness less than the illumination luminance threshold that sets in advance, further sensed the people through (having sound to transmit), just triggering the led lamp unlatching throws light on, although effective energy savings, but because the effective range of light-operated inductor sensing human body (sound) is limited, when pedestrian or vehicle do not enter in the sensing range, environment is in dark state, so that pedestrian or vehicle can not get illumination within this period, the fail safe that impact is travelled is so that the illuminating effect of led lamp is relatively poor.
In the embodiment of the invention, a kind of led lamp is provided, break-make by many current-limiting circuit unit of Based Intelligent Control time delay circuit unit control, when detecting illumination brightness less than the illumination luminance threshold that sets in advance, control the first current-limiting circuit cell conduction led lamp, make led lamp that less illumination brightness can be provided, like this, when pedestrian or vehicles failed enter in the sensing range, the illumination of certain brightness can be provided, thereby the lifting driving safety also promotes the illuminating effect of led lamp, avoids the meaningless wasting of resources of led lamp; And when sensing sound, further control again the second current-limiting circuit cell conduction led lamp in parallel with the first current-limiting circuit unit, jointly provide power supply to led lamp, so that led lamp can provide larger illumination brightness, like this, two brightness degree intelligence by led lamp are switched, thereby avoid having promoted the driving safety of pedestrian and vehicle because led lamp is lighted suddenly the sense of discomfort that causes.
Fig. 1 is the structural representation of embodiment of the invention LED light fixture.Referring to Fig. 1, this LED light fixture comprises at least: Based Intelligent Control time delay circuit unit 2, the first current-limiting circuit unit 3, the second current-limiting circuit unit 4, rectification circuit unit 5 and led light source modular circuit unit 7, wherein,
The input of Based Intelligent Control time delay circuit unit 2 links to each other with the zero line side of alternating current (N end), and the first output links to each other with the input of the first current-limiting circuit unit 3, and the second output links to each other with the second input of the second current-limiting circuit unit 4; The first input end of the second current-limiting circuit unit 4 links to each other with the zero line side of alternating current, and output links to each other with the output of the first current-limiting circuit unit 3; The output of the first current-limiting circuit unit 3 links to each other with the second input of rectification circuit unit 5; The first input end of rectification circuit unit 5 links to each other with the input live wire end (L end) of alternating current, and the first output links to each other with the first input end of led light source modular circuit unit 7, and the second output links to each other with the second input of led light source modular circuit unit 7;
Based Intelligent Control time delay circuit unit 2, be used for when detecting illumination brightness less than the illumination luminance threshold that sets in advance, trigger the second current-limiting circuit unit 4 and remain open connection status, switch the first current-limiting circuit unit 3 in parallel with the second current-limiting circuit unit 4 and enter connection status;
Within the time period of illumination brightness less than the illumination luminance threshold that sets in advance, if detect sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, trigger switching the second current-limiting circuit unit 4 and enter connection status;
In the embodiment of the invention, Based Intelligent Control time delay circuit unit 2 is used for according to illumination brightness and sound intensity intensity, control the break-make of the first current-limiting circuit unit 3 and the second current-limiting circuit unit 4, thereby control flows into the size of current in the led light source modular circuit unit 7.
In the practical application, triggering the second current-limiting circuit unit 4 to remain open connection status can be the first input end that trigger to disconnect the second current-limiting circuit unit 4 and being connected of the zero line side of alternating current, also can be the output that triggers disconnection the second current-limiting circuit unit 4 and being connected of the output of the first current-limiting circuit unit 3.
Rectification circuit unit 5 after voltage, the current signal that is used for receiving carries out rectification, exports led light source modular circuit unit 7 to, so that led light source modular circuit unit 7 throws light on according to voltage, the current signal of rectification.
Preferably, Based Intelligent Control time delay circuit unit 2 can also be further used for after triggering switching the second current-limiting circuit unit enters connection status, delay time according to the delay time that sets in advance, at delay time then, trigger switching the second current-limiting circuit unit 4 and enter off-state.
In the embodiment of the invention, the LED light fixture can further include:
Filter circuit unit 6 after being used for voltage, current signal to the rectification of rectification circuit unit 5 outputs and carrying out filtering and process, exports led light source modular circuit unit 7 to.
In the embodiment of the invention, the first output of rectification circuit unit 5 links to each other with the second input with the first input end of filter circuit unit 6 respectively with the second output; The first output of filter circuit unit 6 links to each other with the second input with the first input end of led light source modular circuit unit 7 respectively with the second output.
The LED light fixture can further include:
Input protection circuit unit 1 is used for the alternating current of input is carried out overcurrent protection.
In the embodiment of the invention; the first input end of protective circuit unit 1 links to each other with the input live wire end (L end) of alternating current; the second input links to each other with zero line side (N end); the first output of protective circuit unit 1 links to each other with the first input end of rectification circuit unit 5, and the second output links to each other with the input of Based Intelligent Control time delay circuit unit 2 and the first input end of the second current-limiting circuit unit respectively.
Like this, the concrete annexation of each unit is as follows in the LED light fixture:
The first input end of protective circuit unit and the second input connect respectively input live wire end (L end) and the zero line side (N end) of alternating current, the first output of protective circuit unit links to each other with the first input end of rectification circuit unit, and the second output of protective circuit unit links to each other with the input of Based Intelligent Control time delay circuit unit and the first input end of the second current-limiting circuit unit respectively; The first output of Based Intelligent Control time delay circuit unit links to each other with the input of the first current-limiting circuit unit, and the second output of Based Intelligent Control time delay circuit unit links to each other with the second input of the second current-limiting circuit unit for the control output line; The output of the first current-limiting circuit unit links to each other with the output of the second current-limiting circuit unit, and is connected to the second ac input end of rectification circuit unit; The first output of rectification circuit unit links to each other with the second input with the first input end of filter circuit unit respectively with the second output; The first output of filter circuit unit links to each other with the second input with the first input end of led light source modular circuit unit respectively with the second output.
In the embodiment of the invention, the Based Intelligent Control time delay circuit unit is one and comprises inductor, voltage stabilizing circuit, the functional unit of delay circuit, when the transducer (inductor) of Based Intelligent Control time delay circuit unit does not receive the pumping signal corresponding with inductor, export the first control signal (high level signal or low level signal) to the second current-limiting circuit unit, the second current-limiting circuit unit is disconnected and being connected of protective circuit unit, namely only has the first current-limiting circuit unit place in circuit, like this, the load current of circuit is lower, led light source modular circuit unit is in the low-light level state, and luminous brightness is the first brightness degree;
When the transducer (inductor) of Based Intelligent Control time delay circuit unit receives the pumping signal corresponding with inductor, export the second control signal (low level signal or high level signal) to the second current-limiting circuit unit, that is to say, if the first control signal is high level signal, then the second control signal is low level signal, if the first control signal is low level signal, then the second control signal is high level signal, make the second current-limiting circuit unit place in circuit, namely the first current-limiting circuit unit is in parallel with the second current-limiting circuit unit powers to circuit (led light source modular circuit unit), thereby the electric current that flows through load end is increased, led light source modular circuit unit is in the high brightness state, and luminous brightness is the second brightness degree.
Like this, it is relevant that the brightness variation of the LED lamp in the led light source modular circuit unit and transducer receive the external environment pumping signal, thereby according to the variation of external environment pumping signal, realize that the intelligence of brightness is switched, and namely two brightness degrees intelligence are switched.
In the practical application, also a plurality of sound intensity intensity thresholds can be set in Based Intelligent Control time delay circuit unit 2, the corresponding current-limiting circuit unit of each sound intensity intensity threshold, when detecting sound intensity intensity greater than the corresponding sound intensity intensity threshold that sets in advance, trigger the corresponding current-limiting circuit of switching unit and enter connection status, thereby so that the illumination brightness in the led light source modular circuit unit 7 has a plurality of brightness degrees, brightness is strengthened gradually, more can satisfy pedestrian or driver to the comfortableness requirement of illumination brightness.
Fig. 2 is the first structural representation of embodiment of the invention LED lamp circuit.The LED lamp is realized the switching of two brightness degree intelligence by sound-controlled delay; referring to Fig. 2; this LED light fixture comprises: input protection circuit unit 1, Based Intelligent Control time delay circuit unit 2, the first current-limiting circuit unit 3, the second current-limiting circuit unit 4, rectification circuit unit 5, filter circuit unit 6 and led light source modular circuit unit 7; wherein
Protective circuit unit 1 is made of fuse 101 and piezo-resistance 102 series connection; the one termination alternating current input live wire end (L end) of fuse 101; the other end links to each other with an end of piezo-resistance 102 and the first input end of rectification circuit unit 5; be that the other end while of fuse 101 is as the first output of protective circuit unit 1; be connected to the first input end of rectification circuit unit 5; the other end of piezo-resistance 102 and alternating current input zero line side (N end); the first input end of the input of Based Intelligent Control time delay circuit unit 2 and the second current-limiting circuit unit 4 links to each other; be that the other end while of piezo-resistance 102 is as the second input and second output of protective circuit unit 1; but according to different application, the formation of protective circuit unit is not limited only to this.
In the embodiment of the invention, Based Intelligent Control time delay circuit unit 2 is the sound-controlled delay unit, comprise: voltage stabilizing didoe 201, rectifier diode 202, electrochemical capacitor 203, the first resistance 204, electret 205, the first electric capacity 206, the second electric capacity 207, the second resistance 208, the 3rd electric capacity 209, the 3rd resistance 210, diode 211, the first not gate 213, the second not gate 214, the 3rd not gate 215, the 4th not gate 216, the 5th not gate 217, the 6th not gate 218, the 4th resistance 219 and the 4th electric capacity 223, wherein
The positive pole of voltage stabilizing didoe 201 is connected with second output (zero line N end) of protective circuit unit 1, and this tie point is as reference ground VSS point;
The negative pole of voltage stabilizing didoe 201 is connected with the input anodal and the first current-limiting circuit unit 3 of rectifier diode 202, that is, the simultaneously conduct of the negative pole of voltage stabilizing didoe 201 connects the first output of the power input endpoint of the first current-limiting circuit unit 3;
The positive pole of electrochemical capacitor 203 is connected with the negative pole of rectifier diode 202, and this tie point is as the power supply vdd terminal of sound-controlled delay unit, and the negative pole of electrochemical capacitor 203 is connected with reference ground VSS point;
One end of the first resistance 204 is connected with the VDD point, and the other end is connected with an end of electret 205 and an end of the first electric capacity 206, and its tie point is as the signal output point;
The other end of electret 205 is connected with reference ground VSS point;
The other end of the first electric capacity 206 is connected with an end of the second electric capacity 207, an end of the second resistance 208 and the input of the first not gate 213 respectively;
The other end of the second electric capacity 207 is connected with the other end of the second resistance 208, the output of the first not gate 213 and the input of the second not gate 214 respectively;
The output of the second not gate 214 is connected with an end of the 3rd electric capacity 209;
The other end of the 3rd electric capacity 209 is connected with an end of the 3rd resistance 210;
The other end of the 3rd resistance 210 is connected with an end of the 4th resistance 219 and the input of the 3rd not gate 215 respectively;
The other end of the 4th resistance 219 is connected with reference ground VSS point;
The output of the 3rd not gate 215 is connected with the input of the 4th not gate 216;
The output of the 4th not gate 216 is connected with the positive pole of diode 211;
The negative pole of diode 211 is connected with the input of the 5th not gate 217;
The output of the 5th not gate 217 is connected with the input of the 6th not gate 218;
The output of the 6th not gate 218 is connected with an end of the 4th electric capacity 223;
The other end of the 4th electric capacity 223 is connected with reference ground VSS point;
The output of the 6th not gate 218 is as the second output of sound-controlled delay unit, and output signal is controlled the operating state of the second current-limiting circuit unit 4.
Preferably, Based Intelligent Control time delay circuit unit 2 can further include for the 5th resistance 212 and the 5th electric capacity 222 of eliminating the high level signal noise, wherein,
One end of the 5th resistance 212 links to each other with the output of the 5th not gate 217, and the other end of the 5th resistance 212 is connected with an end of the 5th electric capacity 222 and the input of the 6th not gate 218 respectively; The other end of the 5th electric capacity 222 is connected with reference ground VSS point.
In the practical application, Based Intelligent Control time delay circuit unit 2 can further include the 6th resistance 220 and the 6th electric capacity 221 for time-delay, wherein,
Delay time t=0.9RC, wherein, R is the resistance of the 6th resistance 220, C is the appearance value of the 6th electric capacity 221.
One end of the 6th resistance 220 is connected with the negative pole of diode 211, the input anodal and the 5th not gate 217 of electrolysis the 6th electric capacity 221 respectively;
The negative pole of the other end of the 6th resistance 220 and electrolysis the 6th electric capacity 221 is connected with reference ground VSS point.
The first current-limiting circuit unit 3 is the circuit unit of a capacitance-resistance structure, comprising: the first resistance 301, electric capacity 302 and the second resistance 303, wherein,
One end of the first resistance 301 is connected with an end of electric capacity 302 and the first output of Based Intelligent Control time delay circuit unit 2 respectively, namely this tie point is as the input point (input) of the first current-limiting circuit unit 3, be connected to the power stage point (the first output) of sound-controlled delay unit, the other end of the first resistance 301 is connected with the other end of electric capacity 302 and an end of the second resistance 303 respectively, the other end of the second resistance 303 is connected to the second input of rectification circuit unit 5 as the output of the first current-limiting circuit unit 3.
The second current-limiting circuit unit 4 is the resistance-capacitance circuit unit of a belt switch, and in the embodiment of the invention, the switch that uses is bidirectional triode thyristor, and practical application is not limited to this, can adopt other elements as switching tube, for example, and metal-oxide-semiconductor etc.Comprise: the first resistance 401, controllable silicon 402, the second resistance 403, inductance 404 and electric capacity 405, wherein,
The first input end of controllable silicon 402 (T1 end) is the input point (first input end) of the second current-limiting circuit unit 4, be connected with the second output of protective circuit unit 1, namely with reference to ground VSS point, the second input of controllable silicon 402 (control end G end) is connected with an end of the first resistance 401, the other end of the first resistance 401 and Based Intelligent Control time delay circuit unit 2(sound-controlled delay unit) the second output (control output line) be connected;
The output of controllable silicon 402 (T2 end) is connected with an end of the second resistance 403 and an end of electric capacity 405 respectively, the other end of the second resistance 403 is connected with the other end of electric capacity 405 and an end of inductance 404 respectively, the other end of inductance 404 is connected to the second input of rectification circuit unit 5 as the output of the second current-limiting circuit unit 4.
In the embodiment of the invention, rectification circuit unit 5 adopts 4 rectifier diodes, and practical application is not limited to this, for example, can adopt rectifier bridge stack, and perhaps circuit of synchronous rectification etc. has the circuit of equal effect.
The negative pole of the positive pole of the first diode 501 and the 3rd diode 503 links together, and as the first input end of rectification circuit unit 5, is connected with the first output of protective circuit unit 1; The negative pole of the negative pole of the first diode 501 and the second diode 502 links together, as the first output of rectification circuit unit 5; The negative pole of the positive pole of the second diode 502 and the 4th diode 504 links together, as the second input of rectification circuit unit 5; The positive pole of the positive pole of the 3rd diode 503 and the 4th diode 504 links together, as the second output of rectification circuit unit 5.
In the embodiment of the invention, filter circuit unit 6 adopts the lc circuit main body, and practical application is not limited to this, other filter circuits that can adopt RC or have therewith equal effect.Comprise: inductance 601, resistance 602 and electrochemical capacitor 603, wherein,
One end of resistance 602 is connected with the first output of rectification circuit unit 5 and an end of inductance 601 respectively, the other end of resistance 602 is connected with the second output of rectification circuit unit 5 and the negative pole of electrochemical capacitor 603 respectively, the second output as filter circuit unit 6, the other end of inductance 601 is connected with the positive pole of electrochemical capacitor 603, simultaneously, the other end of inductance 601 is also as the first output of filter circuit unit 6.Wherein, resistance 602 is optional resistance, is a dummy load, and being used for provides open-circuit-protection to circuit.
In the embodiment of the invention, led light source modular circuit unit 7 adopts a plurality of LED lamp pearls, adopts " order " word topological structure of series and parallel connections combination, also can adopt other topological structures in the practical application, for example, and multi-channel parallel.Certainly, in the practical application, led light source modular circuit unit also can adopt in a plurality of led chip integration packagings to a unit, perhaps by the LED cell formation of a plurality of these integration packagings.Comprise: LED lamp pearl to a N LED lamp pearl, wherein, N is the natural number greater than 1, can arrange according to actual needs.
The input of the one LED lamp pearl is connected with the first output of filter circuit unit 6 and the input of the 2nd LED lamp pearl respectively, the output of the one LED lamp pearl is connected with the output of the 2nd LED lamp pearl, the output of the one LED lamp pearl links to each other with the input of the 3rd LED lamp pearl, the output of the 2nd LED lamp pearl links to each other with the input of the 4th LED lamp pearl, the output of the 3rd LED lamp pearl is connected with the output of the 4th LED lamp pearl, so circulation is until the output of (N-1) LED lamp pearl is connected with the output of N LED lamp pearl and the second output of filter circuit unit 6 respectively.
The workflow of the LED light fixture of the embodiment of the invention is as follows:
Within the time period of illumination brightness less than the illumination luminance threshold that sets in advance, when the LED light fixture does not receive sound intensity strength signal greater than the sound intensity intensity threshold that sets in advance, the second current-limiting circuit unit 4 is in off-state, the first current-limiting circuit unit 3 is in running order, the electric current of led light source modular circuit unit 7 of flowing through is less, in the first current-limiting circuit unit 3, the resistance-capacitance network that is made of electric capacity 302, resistance 301 carries out step-down to the voltage signal of inputting, suppress resistance 303 through current peak, become the larger direct current of ripple by rectification circuit unit 5.
Fig. 3 is the waveform voltage signal schematic diagram of the embodiment of the invention behind over commutation.Referring to Fig. 3, behind over commutation, the sine voltage signal waveform is in inverted status at negative half-cycle, and is identical with the sine voltage signal that is in positive half period.
In filter circuit unit 6, resistance 602 is a dummy load, provides open-circuit-protection to circuit, and the direct current after the rectification is through the LC filter circuit of inductance 601 and electric capacity 603 compositions, and the filtering ripple forms galvanic current.
Fig. 4 is that the embodiment of the invention is through filtered waveform voltage signal schematic diagram.Referring to Fig. 4, after filtration after the filtering of wave circuit unit 6, filtering the ripple in the sine voltage signal of two positive half periods, form comparatively galvanic current, the direct driving LED light source of direct current module circuit unit 7 after the rectifying and wave-filtering, because only have the first current-limiting circuit unit 3 that electric current is provided this moment, the electric current of the led light source modular circuit unit 7 of flowing through is lower, and the LED lamp is in the low-light level state.
In the embodiment of the invention, the sound intensity intensity threshold that default brightness is switched is 60 decibels (DB), error 20DB, when sound inductor (electret 205) receives the voice signal of default sound intensity intensity threshold, the resistance of sound inductor reduces, produce a low level signal, through the first electric capacity 206, the AC portion of low level signal is coupled to the input of the first not gate 213, wherein, the first not gate 213, the second resistance 208 and the second electric capacity 207 consist of a non-gate amplifier, the AC portion signal of low level signal amplifies via this non-gate amplifier, be delivered to the input of the second not gate 214 by the output of the first not gate 213, carry out reverse process via the second not gate 214, output output by the second not gate 214, again sequentially through the 3rd electric capacity 209, the 3rd resistance 210, the 3rd not gate 215 and the 4th not gate 216, by high level signal with enough width and intensity of the 4th not gate 216 outputs, high level signal is through diode 211, be 221 chargings of electrolysis the 6th electric capacity, simultaneously, the 6th resistance 220 that discharges is electrochemical capacitor 211 discharges, electrolysis the 6th electric capacity 221 transfers to the 5th not gate 217 with high level signal, the 5th resistance 212 and the 5th electric capacity 222 are used for eliminating the noise of high level signal, avoid exporting misoperation, eliminate the high level signal of noise again through after 218 processing of the 6th not gate, be still high level signal, high level signal drives controllable silicon 402 conductings by the first resistance 401, conducting the second current-limiting circuit unit 4, make the first current-limiting circuit unit 3 and 4 parallel connections of the second current-limiting circuit unit, thereby increased the power supply capacity to load (led light source modular circuit unit 7), the current signal of the first current-limiting circuit unit 3 and 4 outputs of the second current-limiting circuit unit, after rectification by rectification circuit unit 5 and the filtering of filter circuit unit 6, make the electric current of input led light source modular circuit unit 7 reach default maximum current, LED lamp pearl is in the full power high brightness level, and it is maximum that illuminating effect reaches.
When voice signal fades away, when sound intensity strength signal is less than or equal to the sound intensity intensity threshold that sets in advance, the signal that imports the first electric capacity 206 into becomes high level signal, export the first not gate 213 to, after the reverse process of the first not gate 213 and the second not gate 214, become low level signal, can not be again to 221 chargings of electrolysis the 6th electric capacity, so that 220 pairs of electrolysis of the 6th resistance the 6th electric capacity, 221 discharges, be the delay time t=0.9RC of led light source modular circuit unit 7 discharge time, wherein, R is the resistance of the 6th resistance 220, and C is the appearance value of the 6th electric capacity 221.The electric charge of electrolysis the 6th electric capacity 221 storages discharges via the 6th resistance 220, when electrolysis the 6th electric capacity 221 voltages are lower than the logic low of not gate, namely the 5th not gate 217 inputs are low level signal, after resistance R 212 and 218 processing of the 6th not gate, remain low level signal, controllable silicon 402 disconnects, reply initial condition, disconnect the connecting path of the second current-limiting circuit unit 4, make the second current-limiting circuit unit 4 be in off position, only have the first current-limiting circuit unit 3 in running order, the electric current in the led light source modular circuit unit 7 reverts to initial little current status, and the LED lamp is in the glimmer state.
Before the discharge of electrolysis the 6th electric capacity 221 finishes, if the voice signal input is arranged again, when namely sound intensity strength signal is greater than the sound intensity intensity threshold that sets in advance, then restart the timing of delaying time.
When detecting illumination brightness more than or equal to the illumination luminance threshold that sets in advance, disconnect the connecting path of the first current-limiting circuit unit 3, make the first current-limiting circuit unit 3 be in off position, namely the first current-limiting circuit unit 3 and the second current-limiting circuit unit 4 all are in off-state, electric current in the led light source modular circuit unit 7 is zero, and the LED lamp is in closed condition.
Fig. 5 is the second structural representation of embodiment of the invention LED lamp circuit.The two brightness degree intelligence that realize the LED light fixture by the infrared control time-delay are switched, different from Fig. 2 is, the intelligent inductor that the technical scheme of Fig. 2 adopts is electret 205, and in the technical scheme shown in Figure 3, the intelligent inductor of employing is pyroelectric infrared sensor 224, so that the signal that receives has difference, other each several parts of circuit, all do not change, the signal of rear class is processed all identical with Fig. 2 with the Current Control aspect of led light source modular circuit unit, does not repeat them here.
Fig. 6 is the 3rd structural representation of embodiment of the invention LED lamp circuit.Realize two brightness degree intelligence switching LED lamps by infrared double light control time-delay, different from Fig. 2, Fig. 5 is, the intelligent inductor that the technical scheme of Fig. 2 adopts is electret 205, in the technical scheme shown in Figure 5, the intelligent inductor that adopts is pyroelectric infrared sensor 224, among Fig. 6, the intelligent inductor of employing is that pyroelectric infrared sensor 224, the four resistance 219 adopt photo resistance 225.Like this, when extraneous light is stronger, photo resistance 225 is low resistance, the input of the 3rd not gate 215 is low level signal always, front end heat is released the invalidating signal that infrared sensor 224 imports into, and when extraneous light was weak, photo resistance 225 was high resistance, the input end signal of the 3rd not gate 215 is released the signal deciding that infrared sensor 224 receives by front end heat.Other each several parts of circuit all do not change, and the signal of rear class is processed all identical with Fig. 2 with the Current Control aspect of led light source modular circuit unit, does not repeat them here.
As seen from the above technical solution, a kind of led lamp that the embodiment of the invention provides, the Based Intelligent Control time delay circuit unit is when detecting illumination brightness less than the illumination luminance threshold that sets in advance, trigger the second current-limiting circuit unit and remain open connection status, switch the first current-limiting circuit unit and enter connection status, make led lamp that less illumination brightness can be provided, like this, when pedestrian or vehicles failed enter in the sensing range, the illumination of certain brightness can be provided, thereby the lifting driving safety also promotes the illuminating effect of led lamp; Within the time period of illumination brightness less than the illumination luminance threshold that sets in advance, if detect sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, trigger switching the second current-limiting circuit unit and enter connection status; After the rectification circuit unit carries out rectification with voltage, the current signal of the first current-limiting circuit unit and the second current-limiting circuit unit output, export led light source modular circuit unit to, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification.Thereby the LED light fixture that provides a kind of pair of brightness degree intelligence to switch is realized the illumination of different brightness according to different environment; In order to the work of controlling the current-limiting circuit unit whether employing is based on the Based Intelligent Control time delay circuit unit of inductor,, thereby realize control to electric current in the led light source modular circuit unit, can reach the function that brightness degree switches; The importation of Based Intelligent Control time delay circuit unit is inductor, adopts the RC circuit to make delay circuit, and is simple and practical, with low cost; Further, the current-limiting circuit unit adopts capacitance-resistance voltage reduction circuit, comes the size of Limited Current with the capacitive reactance of electric capacity, has avoided the power loss of resistance current limliting; By inductance and electric capacity are set in the filter circuit unit, voltage signal is carried out filtering, can improve circuit stability, reduce the current fluctuation in the led light source modular circuit unit, simultaneously, in the filter circuit unit, also further be provided with dummy load, improved circuit reliability; And, partly use the led light source modular circuit unit of high light efficiency in lamp source, energy-efficient.
Fig. 7 is the method flow schematic diagram of embodiment of the invention control LED lamp luminescence.Referring to Fig. 7, this flow process comprises:
Step 701, the Based Intelligent Control time delay circuit unit is when detecting illumination brightness less than the illumination luminance threshold that sets in advance, trigger the second current-limiting circuit unit and remain open connection status, switch the first current-limiting circuit unit in parallel with the second current-limiting circuit unit and enter connection status;
In this step, the Based Intelligent Control time delay circuit unit is controlled the break-make of the first current-limiting circuit unit and the second current-limiting circuit unit according to illumination brightness and sound intensity intensity, thereby control flows into the size of current in the led light source modular circuit unit.
Step 702, rectification circuit unit export led light source modular circuit unit to after voltage, the current signal of the first current-limiting circuit unit output carried out rectification, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification;
In this step, during less than the illumination luminance threshold that sets in advance, control the first current-limiting circuit cell conduction led lamp in illumination brightness, make led lamp that less illumination brightness can be provided.
Step 703, Based Intelligent Control time delay circuit unit if detect sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, triggered switching the second current-limiting circuit unit and enter connection status within the time period of illumination brightness less than the illumination luminance threshold that sets in advance;
In this step, during greater than the sound intensity intensity threshold that sets in advance, trigger the first current-limiting circuit unit and the second current-limiting circuit unit in parallel and all enter connection status less than the illumination luminance threshold that sets in advance and sound intensity intensity in illumination brightness.
Step 704, after voltage, the current signal that the rectification circuit unit is exported the first current-limiting circuit unit and the second current-limiting circuit unit of parallel connection carries out rectification, export led light source modular circuit unit to, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification.
In this step, the first current-limiting circuit unit by parallel connection and the second current-limiting circuit unit are jointly for led light source modular circuit unit provides electric current, thereby so that led lamp can provide larger illumination brightness.
Preferably, after triggering switching the second current-limiting circuit unit entered the step of connection status, the method can further include:
Delay time according to the delay time that sets in advance, at delay time then, trigger switching the second current-limiting circuit unit and enter off-state.
In the practical application, after described voltage, current signal are carried out rectification, export to before the step of led light source modular circuit unit, further comprise:
Voltage, the current signal of the rectification of rectification circuit unit output carried out filtering to be processed.
The method of this control LED lamp luminescence can further include:
Step 705, Based Intelligent Control time delay circuit unit detect sound intensity intensity and are less than or equal to the sound intensity intensity threshold that sets in advance, and trigger switching the second current-limiting circuit unit and enter off-state.
In this step, when pedestrian or vehicle during gradually away from the LED light fixture, if detecting sound intensity intensity, the Based Intelligent Control time delay circuit unit is less than or equal to the sound intensity intensity threshold that sets in advance, show that pedestrian or vehicle are away from the effective range of light-operated inductor, only need provide less brightness of illumination to ensure the driving safety of pedestrian or vehicle, thereby, can reduce the brightness of illumination of LED light fixture, with effective energy savings.
In the practical application, be less than or equal in sound intensity intensity on the basis of the sound intensity intensity threshold that sets in advance, can further include:
Step 706, Based Intelligent Control time delay circuit unit detect illumination brightness more than or equal to the illumination luminance threshold that sets in advance, and trigger switching the first current-limiting circuit unit and enter off-state.
In this step, if the Based Intelligent Control time delay circuit unit detects illumination brightness more than or equal to the illumination luminance threshold that sets in advance, show that the natural light brightness of LED light fixture surrounding environment can satisfy the illumination brightness demand of pedestrian or vehicle safety, thereby, can disconnect the connecting path of LED light fixture, thus effective energy savings.
In the practical application, the illumination of LED light fixture circulates between above-mentioned flow process.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also comprises these changes and modification interior.

Claims (21)

1. control the luminous method of light-emitting diode (LED) lamp for one kind, the method comprises:
The Based Intelligent Control time delay circuit unit is when detecting illumination brightness less than the illumination luminance threshold that sets in advance, trigger the second current-limiting circuit unit and remain open connection status, switch the first current-limiting circuit unit in parallel with the second current-limiting circuit unit and enter connection status;
The rectification circuit unit exports led light source modular circuit unit to after voltage, the current signal of the first current-limiting circuit unit output carried out rectification, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification;
The Based Intelligent Control time delay circuit unit if detect sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, triggered switching the second current-limiting circuit unit and enters connection status within the time period of illumination brightness less than the illumination luminance threshold that sets in advance;
After voltage, the current signal that the rectification circuit unit is exported the first current-limiting circuit unit and the second current-limiting circuit unit of parallel connection carries out rectification, export led light source modular circuit unit to, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification.
2. method according to claim 1 wherein, is switched after the second current-limiting circuit unit enters the step of connection status in described triggering, and the method further comprises:
Delay time according to the delay time that sets in advance, at delay time then, trigger switching the second current-limiting circuit unit and enter off-state.
3. method according to claim 2 wherein, after described voltage, current signal are carried out rectification, exports to before the step of led light source modular circuit unit, further comprises:
Voltage, the current signal of the rectification of rectification circuit unit output carried out filtering to be processed.
4. according to claim 1 to 3 each described methods, wherein, described method further comprises:
The Based Intelligent Control time delay circuit unit detects sound intensity intensity and is less than or equal to the sound intensity intensity threshold that sets in advance, and triggers switching the second current-limiting circuit unit and enters off-state.
5. method according to claim 4, wherein, described method further comprises:
The Based Intelligent Control time delay circuit unit detects illumination brightness more than or equal to the illumination luminance threshold that sets in advance, and triggers switching the first current-limiting circuit unit and enters off-state.
6. a light-emitting diode (LED) lamp is characterized in that, this LED light fixture comprises: Based Intelligent Control time delay circuit unit, the first current-limiting circuit unit, the second current-limiting circuit unit, rectification circuit unit and led light source modular circuit unit, wherein,
The input of Based Intelligent Control time delay circuit unit links to each other with the zero line side of alternating current, and the first output links to each other with the input of the first current-limiting circuit unit, and the second output links to each other with the second input of the second current-limiting circuit unit; The first input end of the second current-limiting circuit unit links to each other with the zero line side of alternating current, and output links to each other with the output of the first current-limiting circuit unit; The output of the first current-limiting circuit unit links to each other with the second input of rectification circuit unit; The first input end of rectification circuit unit links to each other with the input live wire end of alternating current, and the first output links to each other with the first input end of led light source modular circuit unit, and the second output links to each other with the second input of led light source modular circuit unit;
The Based Intelligent Control time delay circuit unit, be used for when detecting illumination brightness less than the illumination luminance threshold that sets in advance, trigger the second current-limiting circuit unit and remain open connection status, switch the first current-limiting circuit unit in parallel with the second current-limiting circuit unit and enter connection status;
Within the time period of illumination brightness less than the illumination luminance threshold that sets in advance, if detect sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, trigger switching the second current-limiting circuit unit and enter connection status;
The rectification circuit unit after voltage, the current signal that is used for receiving carries out rectification, exports led light source modular circuit unit to, so that led light source modular circuit unit throws light on according to voltage, the current signal of rectification.
7. LED light fixture according to claim 6, it is characterized in that, described Based Intelligent Control time delay circuit unit is detecting sound intensity intensity greater than the sound intensity intensity threshold that sets in advance, after triggering switching the second current-limiting circuit unit enters connection status, be further used for delaying time according to the delay time that sets in advance, at delay time then, trigger switching the second current-limiting circuit unit and enter off-state.
8. LED light fixture according to claim 6 is characterized in that, further comprises:
The filter circuit unit after being used for voltage, current signal to the rectification of rectification circuit unit output and carrying out filtering and process, exports led light source modular circuit unit to.
9. according to claim 6 to 8 each described LED light fixtures, it is characterized in that, further comprise:
The input protection circuit unit is used for the alternating current of input is carried out overcurrent protection.
10. LED light fixture according to claim 9; it is characterized in that; described protective circuit unit is made of fuse and piezo-resistance series connection; the one termination alternating current input live wire end of fuse; the other end links to each other with an end of piezo-resistance and the first input end of rectification circuit unit, and the other end of piezo-resistance inputs the input of zero line side, Based Intelligent Control time delay circuit unit with alternating current and the first input end of the second current-limiting circuit unit links to each other.
11. LED light fixture according to claim 10, it is characterized in that, described Based Intelligent Control time delay circuit unit comprises: voltage stabilizing didoe, rectifier diode, electrochemical capacitor, the first resistance, electret, the first electric capacity, the second electric capacity, the second resistance, the 3rd electric capacity, the 3rd resistance, diode, the first not gate, the second not gate, the 3rd not gate, the 4th not gate, the 5th not gate, the 6th not gate, the 4th resistance and the 4th electric capacity, wherein
The positive pole of voltage stabilizing didoe is connected with the second output of protective circuit unit, and this tie point is as reference ground VSS point;
The negative pole of voltage stabilizing didoe is connected with the input anodal and the first current-limiting circuit unit of rectifier diode;
The positive pole of electrochemical capacitor is connected with the negative pole of rectifier diode, and the negative pole of electrochemical capacitor is connected with reference ground VSS point;
One end of the first resistance is connected with the negative pole of rectifier diode, and the other end is connected with an end of electret and an end of the first electric capacity;
The other end of electret is connected with reference ground VSS point;
The other end of the first electric capacity is connected with an end of the second electric capacity, an end of the second resistance and the input of the first not gate respectively;
The other end of the second electric capacity is connected with the other end of the second resistance, the output of the first not gate and the input of the second not gate respectively;
The output of the second not gate is connected with an end of the 3rd electric capacity;
The other end of the 3rd electric capacity is connected with an end of the 3rd resistance;
The other end of the 3rd resistance is connected with an end of the 4th resistance and the input of the 3rd not gate respectively;
The other end of the 4th resistance is connected with reference ground VSS point;
The output of the 3rd not gate is connected with the input of the 4th not gate;
The output of the 4th not gate is connected with the positive pole of diode;
The negative pole of diode is connected with the input of the 5th not gate;
The output of the 5th not gate is connected with the input of the 6th not gate;
The output of the 6th not gate is connected with an end of the 4th electric capacity;
The other end of the 4th electric capacity is connected with reference ground VSS point;
The output of the 6th not gate is as the second output of Based Intelligent Control time delay circuit unit, and output signal is controlled the operating state of the second current-limiting circuit unit.
12. LED light fixture according to claim 11 is characterized in that, described Based Intelligent Control time delay circuit unit further comprises the 5th resistance and the 5th electric capacity for elimination high level signal noise, wherein,
One end of the 5th resistance links to each other with the output of the 5th not gate, and the other end of the 5th resistance is connected with an end of the 5th electric capacity and the input of the 6th not gate respectively; The other end of the 5th electric capacity is connected with reference ground VSS point.
13. LED light fixture according to claim 12 is characterized in that, described Based Intelligent Control time delay circuit unit further comprises the 6th resistance and the 6th electric capacity for time-delay, wherein,
One end of the 6th resistance is connected with the negative pole of diode, the input anodal and the 5th not gate of electrolysis the 6th electric capacity respectively;
The negative pole of the other end of the 6th resistance and electrolysis the 6th electric capacity is connected with reference ground VSS point.
14. to 8 each described LED light fixtures, it is characterized in that according to claim 6, described the first current-limiting circuit unit comprises: the first resistance, electric capacity and the second resistance, wherein,
One end of the first resistance is connected with an end of electric capacity and the first output of Based Intelligent Control time delay circuit unit respectively, the other end of the first resistance is connected with the other end of electric capacity and an end of the second resistance respectively, the other end of the second resistance is connected to the second input of rectification circuit unit as the output of the first current-limiting circuit unit.
15. to 8 each described LED light fixtures, it is characterized in that according to claim 6, described the second current-limiting circuit unit comprises: the first resistance, controllable silicon, the second resistance, inductance and electric capacity, wherein,
The silicon controlled first input end is connected with the second output of protective circuit unit, and silicon controlled the second input is connected with an end of the first resistance, and the other end of the first resistance is connected with the second output of Based Intelligent Control time delay circuit unit;
The silicon controlled output is connected with an end of the second resistance and an end of electric capacity respectively, the other end of the second resistance is connected with the other end of electric capacity and an end of inductance respectively, the other end of inductance is connected to the second input of rectification circuit unit as the output of the second current-limiting circuit unit.
16. to 8 each described LED light fixtures, it is characterized in that according to claim 6, described rectification circuit unit comprises: the first diode, the second diode, the 3rd diode and the 4th diode, wherein,
The negative pole of the positive pole of the first diode and the 3rd diode links together, and as the first input end of rectification circuit unit, is connected with the first output of protective circuit unit; The negative pole of the negative pole of the first diode and the second diode links together, as the first output of rectification circuit unit; The negative pole of the positive pole of the second diode and the 4th diode links together, as the second input of rectification circuit unit; The positive pole of the positive pole of the 3rd diode and the 4th diode links together, as the second output of rectification circuit unit.
17. LED light fixture according to claim 8 is characterized in that, described filter circuit unit comprises: inductance and electrochemical capacitor, wherein,
One end of inductance is connected with the first output of rectification circuit unit, and the other end of inductance is connected with the positive pole of electrochemical capacitor, as the first output of filter circuit unit;
The negative pole of electrochemical capacitor is connected with the second output of rectification circuit unit, as the second output of filter circuit unit.
18. LED light fixture according to claim 17 is characterized in that, described filter circuit unit further comprises:
Resistance, an end are connected with the first output of rectification circuit unit and an end of inductance respectively, and the other end is connected with the second output of rectification circuit unit and the negative pole of electrochemical capacitor respectively, as the second output of filter circuit unit.
19. to 8 each described LED light fixtures, it is characterized in that according to claim 6, described led light source modular circuit unit comprises: LED lamp pearl to a N LED lamp pearl, wherein, N is the natural number greater than 1,
The input of the one LED lamp pearl is connected with the first output of filter circuit unit and the input of the 2nd LED lamp pearl respectively, the output of the one LED lamp pearl is connected with the output of the 2nd LED lamp pearl, the output of the one LED lamp pearl links to each other with the input of the 3rd LED lamp pearl, the output of the 2nd LED lamp pearl links to each other with the input of the 4th LED lamp pearl, the output of the 3rd LED lamp pearl is connected with the output of the 4th LED lamp pearl, so circulation is until the output of (N-1) LED lamp pearl is connected with the output of N LED lamp pearl and the second output of filter circuit unit respectively.
20. LED light fixture according to claim 11 is characterized in that, described electret is pyroelectric infrared sensor.
21. LED light fixture according to claim 11 is characterized in that, described electret is pyroelectric infrared sensor, and described the 4th resistance is photo resistance.
CN201210424524.4A 2012-10-30 2012-10-30 LED lamp Expired - Fee Related CN102905442B (en)

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CN103327692A (en) * 2013-06-06 2013-09-25 奥泰斯电子(东莞)有限公司 Lighting energy-saving induction system and control method
CN105338697A (en) * 2015-10-29 2016-02-17 苏州美达瑞电子有限公司 Power supply automatic control device used for socket type LED lamp
CN106061074A (en) * 2016-08-04 2016-10-26 惠州市惠阳区永湖中学 Acousto-optic induction lamp

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CN107820350B (en) * 2015-12-30 2020-04-14 杭州鸿雁电器有限公司 Method for controlling brightness switching of LED lamp and brightness switching device
CN106888523A (en) * 2017-04-12 2017-06-23 南京中电熊猫照明有限公司 One kind exchange is straight to drive LED light source module system
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CN201428941Y (en) * 2009-01-24 2010-03-24 艾晓峰 Sound-light-control LED lamp
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CN103209519A (en) * 2013-03-12 2013-07-17 上思县东岽电子科技有限责任公司 Light emitting diode (LED) ceiling lamp with timing and automatic dimming functions
CN103327692A (en) * 2013-06-06 2013-09-25 奥泰斯电子(东莞)有限公司 Lighting energy-saving induction system and control method
CN105338697A (en) * 2015-10-29 2016-02-17 苏州美达瑞电子有限公司 Power supply automatic control device used for socket type LED lamp
CN106061074A (en) * 2016-08-04 2016-10-26 惠州市惠阳区永湖中学 Acousto-optic induction lamp
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