CN103220862A - Control circuit and control method for achieving multiple lighting functions of human body induction LED lamp - Google Patents
Control circuit and control method for achieving multiple lighting functions of human body induction LED lamp Download PDFInfo
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Abstract
The invention discloses a control circuit and a control method for achieving various lighting functions of a human body induction LED lamp. The control circuit comprises an LED lighting circuit. The LED lighting circuit comprises an optically coupled circuit, a microprocessor which is connected with the optically coupled circuit, an LED lamp set which is connected with the microprocessor, and a switch circuit which is connected with the LED lamp set and used for driving the LED lamp set. The control circuit further comprises an induced circuit. The induced circuit comprises an infrared induction circuit which is connected with the microprocessor and used for inducing infrared signals and a photosensitive sensor which is connected with the microprocessor and used for inducing ambient light intensity. According to the control circuit and the control method for achieving the various lighting functions of the human body induction LED lamp, the various lighting functions of a common LED lighting function, a lighting control function in daytime and at night, a micro-lighting control function and the like are simultaneously achieved, application space of the human body induction LED lamp is greatly increased, and diverse lighting demands of users are met.
Description
Technical field
The present invention relates to LED illumination and control field, in particular a kind of control circuit and method that realizes the human body sensing LED lamp of multiple illumination functions.
Background technology
The LED lamp is a kind of novel light fixture, is being widelyd popularize application because of it has characteristics such as brightness height, the life-span is long, power consumption is low, and function is constantly expansion also, as control the luminous of LED lamp by human induction switch.The LED human body sensing illuminating product of selling on the market mainly contains warm light (2700K-3000K colour temperature) now, warm white (4000K-5500K colour temperature), the LED lamp of three kinds of colour temperatures of cold white light (5500K-6500K colour temperature), yet the bulb body of existing human induction switch and light fixture the inside is separated, and has complex structure, difficulty, shortcomings such as use is dumb, induction sensitivity is low, installation work-hour expense height are installed.And it is luminous to control the LED product when induced signal comes, if can't make when not having induced signal LED induction product luminous, can make troubles to the user so in actual applications, and the scope of application is also narrow. inconvenient popularized consumption person market.And some special occasions not only use human body sensing LED etc. as the common LED lamp, and existing LED lamp can't be realized.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
Above-mentioned defective at prior art, the present invention proposes a kind of control circuit and method that can realize the human body sensing LED lamp of multiple illumination functions, so that human body sensing LED lamp is realized light emitting control function and little bright controlled function in common LED illumination functions, evening on daytime simultaneously, promote the function of human body induction LED lamp.
The technical scheme that technical solution problem of the present invention is adopted is as follows:
A kind of control circuit of realizing the human body sensing LED lamp of multiple illumination functions, comprise the LED illuminating circuit, described LED illuminating circuit comprises an optically coupled circuit, the microprocessor that links to each other with described optically coupled circuit, the LED lamp group that links to each other with described microprocessor, be connected and be used for the switching circuit of driving LED lamp group with described LED lamp group, wherein, described control circuit also comprises a sensor circuit, described sensor circuit comprises the infrared induction circuit that links to each other with described microprocessor and be used to respond to infrared signal, and links to each other with described microprocessor and be used for the light sensor of induced environment light intensity.
The control circuit of the human body sensing LED lamp of the multiple illumination functions of described realization, wherein, described infrared induction circuit also comprises an infrared sensor, and the infrared signal amplifier of the infrared signal that described infrared sensor is sensed being carried out processing and amplifying.
The control circuit of the human body sensing LED lamp of the multiple illumination functions of described realization, wherein, the output of described optically coupled circuit links to each other with the signal input part of described microprocessor, the pulse-width signal output of described microprocessor connects the control end of described switching circuit, is used to control the break-make of described switching circuit.
The control circuit of the human body sensing LED lamp of the multiple illumination functions of described realization, wherein, described LED lamp group comprises the LED lamp of serial or parallel connection respectively.
The control circuit of the human body sensing LED lamp of the multiple illumination functions of described realization, wherein, described power driving circuit comprises a wherein voltage stabilizing circuit that exchanges the commentaries on classics DC circuit and link to each other with the described output that exchanges the commentaries on classics DC circuit, and described voltage stabilizing circuit is the low pressure difference linearity integrated regulator.
A kind of control method that realizes the human body sensing LED lamp of multiple illumination functions wherein, comprises step:
A, sensor circuit detect outside induced signal, and when described sensor circuit induction during less than the induced signal of outside, it is luminous that microprocessor control LED lamp group is pressed normal mode.
B, when described sensor circuit detects outside induced signal, described induced signal is sent to microprocessor, described microprocessor is according to the Strength Changes of described induced signal, adjustment is sent the light of varying strength to the intensity of the pulse-modulated signal of LED lamp group output to drive described LED lamp group according to the Strength Changes of described induced signal.
The control method of the human body sensing LED lamp of the multiple illumination functions of described realization, wherein, the induced signal in the described steps A comprises the ambient light strength signal that light sensor is sensed, and the infrared signal sensed of infrared sensor.
The control method of the human body sensing LED lamp of the multiple illumination functions of described realization, wherein, microprocessor increases to the intensity of the pulse-modulated signal of the LED lamp group output respective strengths intensity with described induced signal among the described step B, reduces and reduces.
The control method of the human body sensing LED lamp of the multiple illumination functions of described realization, wherein, the luminous intensity of described LED lamp group changes in a preset range.
The control circuit and the method for the human body sensing LED lamp of the multiple illumination functions of realization provided by the present invention, by being set, sensor circuit responds to extraneous induced signal, and the light-emitting mode by microprocessor control LED lamp, the present invention can make human body sensing LED lamp realize multiple illumination functions such as the light emitting control function in common LED illumination functions, evening on daytime and little bright controlled function simultaneously, promote the application space of human body sensing LED lamp greatly, satisfied user's diversified lighting demand.And realized the luminous automatic control of LED lamp group, reached the purpose of energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the theory diagram of control circuit of the human body sensing LED lamp of the multiple illumination functions of realization provided by the invention.
Fig. 2 is the theory diagram of preferred embodiment of control circuit of the human body sensing LED lamp of the multiple illumination functions of realization provided by the invention.
Fig. 3 is the theory diagram of another preferred embodiment of control circuit of the human body sensing LED lamp of the multiple illumination functions of realization provided by the invention.
Fig. 4 is the luminous method flow diagram of control circuit control LED of the human body sensing LED lamp shown in employing Fig. 1-3 provided by the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, clear and definite, below develop simultaneously with reference to accompanying drawing that the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Referring to Fig. 1, Fig. 1 is the theory diagram of control circuit of the human body sensing LED lamp of the multiple illumination functions of realization provided by the invention, comprise that one realizes multiple illumination functions LED illuminating circuit and sensor circuit 70, and the LED driving power 10 and the power driving circuit 30 of the described LED illuminating circuit of a driving.Described LED illuminating circuit comprises an optically coupled circuit 20, the microprocessor 40 that links to each other with described optically coupled circuit 20, is connected with described LED lamp group 50 and the switching circuit 60 and that is used for driving LED lamp group 50 provides the power driving circuit 30 of driving power for described microprocessor 40, LED lamp group 50 the LED lamp group 50 that links to each other with described microprocessor 40.And for example shown in Figure 2, described sensor circuit 70 comprises light sensor 71 and the infrared induction circuit 72 that links to each other with described microprocessor 40 respectively, wherein, light sensor 71 is used for the induced environment light intensity, and infrared induction circuit 72 is used to respond to the infrared signal that external object sends.Particularly, described infrared induction circuit 72 comprises that also the infrared signal of an infrared sensor 722 and a pair of described infrared sensor 722 inductions carries out the infrared signal amplifier 721 of processing and amplifying.Realize that by infrared induction circuit and light sensor LED lamp group changes luminous intensity according to extraneous induced signal, control the pattern of giving out light of LED lamp group simultaneously by microprocessor, to realize the illumination functions of common LED lamp, and the illumination in evening on daytime control, realize little bright controlled function in evening simultaneously.
Particularly, as shown in Figure 3, the input of optically coupled circuit 20 connects LED driving power 10, output links to each other with first signal input part 41 of microprocessor 40, this optically coupled circuit 20 produces the photoelectricity coupled signal by LED driving power 10, in the present embodiment, this photoelectricity coupled signal is a square-wave signal.Therefore, the signal of first signal input part, 41 receptions of microprocessor 40 is a square-wave signal.The secondary signal input 43 of described microprocessor connects light sensor 71, the three signal input parts 42 and connects the infrared induction circuit, and infrared signal amplifier 721 concrete and in the infrared induction circuit is connected.Described light sensor 71 by the induced environment light intensity to described secondary signal input 43 outputs one square-wave signal, and the infrared induction circuit after sensing the infrared signal that external object sends to the 3rd signal input part 42 output square-wave signals.The pulse-width signal output of described microprocessor 40 connects the control end of described switching circuit 60, described microprocessor is handled the square-wave signal that three signal input parts receive, and by pulse-width signal output output control signal, the break-make of control switch circuit 60.And switching circuit 60 links to each other with LED lamp group 50, is used for the luminous of driving LED lamp group 50.Power driving circuit 30 links to each other with microprocessor 40, LED lamp group 50 respectively, for they provide drive current.
For the control circuit of the human body sensing LED lamp of describing the multiple illumination functions of above-mentioned realization more clearly, the present invention is described in detail with specific embodiment.
See also Fig. 3, power driving circuit 30 comprises that one exchanges commentaries on classics direct current (AD changes DC) circuit 31 and voltage stabilizing (LDO) circuit 32, wherein, exchanging the input that changes DC circuit 31 connects on the two-phase of described LED driving power 10, and the output that exchanges commentaries on classics DC circuit 31 connects the input of voltage stabilizing circuit 32, the output of voltage stabilizing circuit 32 connects the voltage input end of microprocessor 40, and for microprocessor 40 provides operating voltage Vcc, this voltage stabilizing circuit 32 is the low pressure difference linearity integrated regulator.Exchange commentaries on classics DC circuit 31 alternating current that LED driving power 10 provides is converted to direct current, and produce the constant pressure and flow signal.The size of voltage and current can be regulated by exchanging commentaries on classics DC circuit 31.Exchange the output that changes DC circuit 31 and also link to each other, for LED lamp group 50 provides working power with LED lamp group 50.
And two input pins of optically coupled circuit 20 are connected on the two-phase of LED driving power 10, a wherein output pin of optically coupled circuit 20 connects the signal input part of microprocessor 40, that is to say the AD1 port of microprocessor MCU, this AD1 port is an analog-to-digital conversion port of microprocessor 40, because the signal of optically coupled circuit 20 outputs is an AC signal.Therefore, carry out break-make control for the ease of follow-up by 40 pairs of switching circuits of microprocessor, this output of optically coupled circuit 20 need connect this AD1 port of microprocessor 40, being digital signal with analog signal conversion.Another output of optically coupled circuit 20 connects the negative pole of output end of power driving circuit 30.
Optically coupled circuit 20 is as follows to the production process of the square-wave signal of microprocessor AD1 port output: the input pin of optically coupled circuit 20 is connected on the live wire and the zero line two ends of alternating current, when the positive half cycle of alternating current flows through light-emitting diode in the optically coupled circuit 20 anodal, this light-emitting diode begins luminous, make the triode conducting of the inside, the signal of AD1 port becomes electronegative potential from original high potential, when alternating current is that negative half period is when flowing through, light-emitting diode is by work, light-emitting diode is not luminous to make not conducting of triode, and then make the signal of AD1 port become high potential from original electronegative potential, the continuous like this input pin that has alternating current to flow through optically coupled circuit makes output pin output square-wave signal.
Preferably, human body induction LED lamp of the present invention can be realized the control of general lighting LED lamp, evening on daytime controlled function, the control circuit of little bright function can make a product both can work as human body sensing LED lamp and use, and also can work as common LED bulb usefulness.In the present invention, LED lamp group can be selected cold white light, warm light and white light for use, it is cold light that present embodiment selects for use one group of LED lamp promptly to choose LED11-LED1N, the LED11 positive pole links to each other with the positive pole of power driving circuit output respectively in the LED lamp group, and the output head anode of power driving circuit that is to say and exchanges the positive pole that changes the DC circuit output.
In the present embodiment, switching circuit 60 is a field effect transistor, the D utmost point of field effect transistor links to each other with the negative pole of described LED lamp group 50, the S utmost point of described field effect transistor links to each other with the negative pole of described power driving circuit output, and the G utmost point of described field effect transistor links to each other with the pulse-width signal output of described microprocessor 40.The pulse-width signal output of described microprocessor 40 provides pulse-width signal to field effect transistor, with the break-make of control field effect transistor.The pulse-width signal output of microprocessor 40 uninterruptedly produces pulse-width signal, drives field effect transistor, and driving LED lamp group is luminous.
Based on the control circuit of the human body sensing LED lamp of the multiple illumination functions of above-mentioned realization, the present invention also provides the control method of the human body sensing LED lamp of realizing multiple illumination functions, and concrete implementation procedure sees also Fig. 4, may further comprise the steps:
Step S100, sensor circuit detect outside induced signal, and when described sensor circuit induction during less than the induced signal of outside, it is luminous that microprocessor control LED lamp group is pressed normal mode;
Step S200, when described sensor circuit detects outside induced signal, described induced signal is sent to microprocessor, described microprocessor is according to the Strength Changes of described induced signal, adjustment is sent the light of varying strength to the intensity of the pulse-modulated signal of LED lamp group output to drive described LED lamp group according to the Strength Changes of described induced signal;
Step S300, when described sensor circuit detects the current time when being evening, described microprocessor control LED lamp group is in little bright luminance.
Below above-mentioned steps is described in detail and describes.
Wherein, in step S100, induced signal comprises the ambient light strength signal that light sensor is sensed, and the infrared signal sensed of infrared sensor.In the specific implementation, at first, power driving circuit is connected external AC, starts working, to described microprocessor, LED lamp group output constant pressure and flow signal; Described optically coupled circuit is to described microprocessor control signal input output square-wave signal, and through described microprocessor to described switching circuit output pulse width modulation signal, drive described switching circuit conducting, and it is luminous to control described LED lamp group.
Wherein, when double switching alternating-current switch in first scheduled time (be generally 1-2 second), the optocoupler output produces continuous two square-wave signals, deliver to the AD1 mouth input of microprocessor, microprocessor internal is judged two square-wave signal inputs continuously, then microprocessor output pulse width modulation signal removes to drive the G utmost point of Q1. and make the Q1 conducting, make LED lamp group luminous.At this moment, the controlled function of control in the evening on daytime of human body sensing LED lamp and the controlled function of human body induction control lost efficacy, and the LED light-emitting device is in long bright state, and it that is to say according to normal mode luminous as common LED illuminating product usefulness.At this moment, sensor circuit is defaulted as and detects outside induced signal always.
And if in the case, in second scheduled time (be generally 1-2 second), switch alternating-current switch again one time, this LED inductive lightning control circuit and control circuit startup in evening on daytime, enter inductive mode, it is luminous to control LED lamp group by the infrared signal of induced environment light intensity and external object under this pattern.When sensor circuit when LED lamp group is luminous is worked, this moment, sensor circuit can send to microprocessor with detected induced signal, so that microprocessor is according to the Strength Changes of induced signal, adjust its intensity to the pulse-modulated signal of LED lamp group output respective strengths, send the light of varying strength according to the Strength Changes of described induced signal to drive described LED lamp group, preferably, microprocessor increases to the intensity of the pulse-modulated signal of the LED lamp group output respective strengths intensity with described induced signal, reduces and reduces.
Particularly, the luminous process of infrared signal control LED lamp group by the induction external object is: in people or mobile vehicle process induction zone, infrared sensor can send between the faint high level 50mVdc-100mVdc, this signal is delivered to the infrared signal amplifier input again and is carried out exporting a high level after signal amplifies, deliver to microprocessor induced signal input again, when at this moment microprocessor induced signal input receives high level, remove to drive the G utmost point of Q1 from microprocessor internal output pulse width modulation signal. make the Q1 conducting, control LED lamp group is luminous.And in unmanned or nothing flow vehicle process induction zone, infrared sensor can not send faint high level, back level signal amplifier input does not have signal, amplifier does not have high level output, microprocessor induced signal input, non-inductive signal, at this moment microprocessor internal no-output pulse-width signal removes to drive the G utmost point of Q1. and make the Q1 can't conducting, then LED lamp group can't be luminous.
Further, the light emitting control function and the little bright controlled function that realize day or night are to be by the luminous process of acquisition environment light intensity control LED lamp group: when ambient light intensity is higher than microprocessor internal one predetermined value, this predetermined value is preferably 20 lumens, light sensor is started working, at this moment the internal resistance of light sensor is lower, the voltage of output is delivered to the microprocessor signals input, microprocessor internal has a reference voltage to calculate, when the voltage of signal input part input is lower than 0.8Vdc, microprocessor judges at this moment ambient light intensity is higher than 20 lumens, current time is daytime, at this moment microprocessor internal no-output pulse-width signal removes to drive the G utmost point of Q1, make the Q1 can't conducting, make the LED lamp group can't be luminous.Be lower than 20 lumen-hours and work as ambient light intensity, light sensor is started working, at this moment the internal resistance of light sensor is than higher, the voltage of output is delivered to the signal input part of microprocessor, when the voltage of signal input part input is higher than 1Vdc, microprocessor judges at this moment ambient light intensity is lower than 20 lumens, current time is evening, at this moment microprocessor internal output pulse width modulation signal is only exported the G utmost point that 10% pulse-width signal removes to drive Q1, make a predetermined ratio of Q1 conducting output LED actual power, control LED lamp group is in little bright luminance.Wait has people or mobile heat object to enter in the investigative range, and according to the conversion from weak to strong of induced signal, the luminous intensity of LED lamp group also changes in a preset range from small to large.In the present embodiment, predetermined ratio is preferably 10%, and preset range is 10% to 100%.Solved traditional LED human body inductive lamp like this and can not finish at night unmanned or not have the heat object that flows and be in complete black situation, and solved on a human body induction LED lamp, finish evening on daytime controlled function and evening little bright controlled function.The benefit that only bright 10% little bright state brings is, makes at night the security protection shooting photograph the picture of environment first watch clearly. avoid can't clapping the picture of knowing surrounding environment at complete black state security protection camera.
Like this, disconnect alternating current by constantly controlling alternating-current switch, when being in evening or daytime, ambient light illumination not only realized the illumination functions of a human body induction LED lamp as ordinary luminaire, but also realized on same human body sensing LED lamp lighting device, realizing simultaneously controlled function and little bright controlled function in evening on daytime, it is luminous to control LED lamp group by the infrared signal of induced environment light intensity and external object, realize the luminous automatic control of LED lamp group, reached the purpose of energy-conserving and environment-protective.And the illumination functions of the LED that strengthens, the LED illumination is intelligent more, is beneficial to the application and the popularization of LED illuminating product.
LED illumination control circuit of the present invention can be widely used in bulb lamp. Down lamp, ceiling light, fluorescent tube, Panel light, Ceiling light, the PAR lamp, the corn lamp, oil lamp, bulkhead lamp capable or the like, external form be along with the requirement of light fixture can arbitrarily change, and can adjust driving power to adapt to the power that various light fixtures require according to the watt level of LED lighting requirement.Have wide range of applications.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion that all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (9)
1. control circuit of realizing the human body sensing LED lamp of multiple illumination functions, comprise the LED illuminating circuit, described LED illuminating circuit comprises an optically coupled circuit, the microprocessor that links to each other with described optically coupled circuit, the LED lamp group that links to each other with described microprocessor, be connected and be used for the switching circuit of driving LED lamp group with described LED lamp group, it is characterized in that, described control circuit also comprises a sensor circuit, described sensor circuit comprises the infrared induction circuit that links to each other with described microprocessor and be used to respond to infrared signal, and links to each other with described microprocessor and be used for the light sensor of induced environment light intensity.
2. according to the control circuit of the human body sensing LED lamp of the multiple illumination functions of the described realization of claim 1, it is characterized in that, described infrared induction circuit also comprises an infrared sensor, and the infrared signal amplifier of the infrared signal that described infrared sensor is sensed being carried out processing and amplifying.
3. according to the control circuit of the human body sensing LED lamp of the multiple illumination functions of the described realization of claim 1, it is characterized in that, the output of described optically coupled circuit links to each other with the signal input part of described microprocessor, the pulse-width signal output of described microprocessor connects the control end of described switching circuit, is used to control the break-make of described switching circuit.
4. according to the control circuit of the human body sensing LED lamp of the multiple illumination functions of the described realization of claim 1, it is characterized in that described LED lamp group comprises the LED lamp of serial or parallel connection respectively.
5. the control circuit of the human body sensing LED lamp of the multiple illumination functions of realization according to claim 1, it is characterized in that, described power driving circuit comprises that one exchanges the voltage stabilizing circuit that changes DC circuit and link to each other with the described output that exchanges the commentaries on classics DC circuit, and described voltage stabilizing circuit is the low pressure difference linearity integrated regulator.
6. a control method that realizes the human body sensing LED lamp of multiple illumination functions is characterized in that, comprises step:
A, sensor circuit detect outside induced signal, and when described sensor circuit induction during less than the induced signal of outside, it is luminous that microprocessor control LED lamp group is pressed normal mode;
B, when described sensor circuit detects outside induced signal, described induced signal is sent to microprocessor, described microprocessor is according to the Strength Changes of described induced signal, adjustment is sent the light of varying strength to the intensity of the pulse-modulated signal of LED lamp group output to drive described LED lamp group according to the Strength Changes of described induced signal.
C, when described sensor circuit detects the current time when being evening, described microprocessor control LED lamp group is in little bright luminance.
7. according to the control method of the human body sensing LED lamp of the multiple illumination functions of the described realization of claim 6, it is characterized in that, induced signal in the described steps A comprises the ambient light strength signal that light sensor is sensed, and the infrared signal sensed of infrared sensor.
8. according to the control method of the human body sensing LED lamp of the multiple illumination functions of the described realization of claim 6, it is characterized in that, microprocessor increases to the intensity of the pulse-modulated signal of the LED lamp group output respective strengths intensity with described induced signal among the described step B, reduces and reduces.
9. the control method of the human body sensing LED lamp of the multiple illumination functions of described according to Claim 8 realization is characterized in that, the luminous intensity of described LED lamp group changes in a preset range.
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| CN107484291A (en) * | 2017-08-01 | 2017-12-15 | 陈优颖 | A kind of human body sensing night-light |
| CN107529246A (en) * | 2016-06-22 | 2017-12-29 | 赛尔富电子有限公司 | A kind of automatic induction system and automatic sensing control method for LED illumination control |
| TWI631873B (en) * | 2014-06-05 | 2018-08-01 | 蔡孝昌 | Controlling system and method of moving object detection light source to realize a variety of illuminations |
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