CN105472815A - LED illumination lamp and control chip therefor, and method for color-temperature regulation and control for LED illumination lamp - Google Patents
LED illumination lamp and control chip therefor, and method for color-temperature regulation and control for LED illumination lamp Download PDFInfo
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- CN105472815A CN105472815A CN201511000639.0A CN201511000639A CN105472815A CN 105472815 A CN105472815 A CN 105472815A CN 201511000639 A CN201511000639 A CN 201511000639A CN 105472815 A CN105472815 A CN 105472815A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0435—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by remote control means
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The invention relates to an LED illumination lamp and a control chip therefor, and a method for color-temperature regulation and control for the LED illumination lamp. The control chip is provided with an alternating current input detection and internal power supply circuit, an infrared detection circuit, an internal logic and storage circuit connected with the alternating current input detection and internal power supply circuit and the infrared detection circuit, a driving circuit and a switching circuit; the internal logic and storage circuit changes a control logic state according to signals from the alternating current input detection and internal power supply circuit and/or the infrared detection circuit, and generates and outputs a status signal for representing the corresponding state to the driving signal; the driving signal generates a driving signal according to the status signal; and the switching circuit generates a control signal according to the driving signal and sends the control signal to the outside through a control signal output pin so as to control an LED driving power supply to supply power for the LED lamp group. By the implementation of the invention, the cost of the LED illumination lamp can be lowered, the size of the control part can be reduced, and the occupied space can be saved; and furthermore, the turn-on, the turn-off and the color temperature regulation of the LED illumination lamp can be controlled by using the existing various kinds of infrared remote controllers.
Description
Technical field
The present invention relates to field of LED illumination, more particularly, relate to a kind of method of carrying out color-temperature regulating control in LED illumination lamp and control chip thereof and LED illumination lamp.
Background technology
Along with the continuous expansion of LED illumination range of application, LED illumination also from the most single illumination functions gradually to intellectuality, hommization and energy saving direction development.In order to meet people's requirement to light under different sight, the LED illumination lamp possessing switch color-temperature regulating function is arisen at the historic moment, then in order to regulate the colour temperature of light fixture more easily on this basis, telecontrol engineering is little by little applied in illumination.
LED illumination colour temperature regulation scheme regulates mainly through remote control or input switch at present, in these two kinds of technology, the cost regulated by input switch is minimum, and without the need to transforming existing circuit, so switch color-temperature regulating scheme is more and more subject to the acceptance of people.However, remote pilot is more convenient than switch control rule a lot of after all, and could control light fixture because the scheme of switch control rule needs to go to switch place, remote control does not then need.Therefore, remote pilot still has very large demand, but needs remote pilot will simple as much as possible and low cost.
Current existing remote control scheme has infrared, bluetooth and 2.4G etc., and generally often kind of remote control scheme all will join a special remote controller specially.Wherein not only peripheral circuit is very complicated for the remote control scheme of bluetooth and 2.4G, and the cost of overall plan is very high, is not to be very applicable to LED illumination.Infrared remote control is compared other two kinds of remote control scheme costs and is reduced a lot, but in current infrared remote control scheme, the LED lamp receiving infrared remote-controlled signal needs a built-in reception, separates the separating element circuit being in harmonious proportion and controlling, this circuit not only adds light fixture cost, and is also a very large challenge in structural design for the light fixture of inner space anxiety.
As shown in Figure 1, existing infrared remote control scheme primarily of integrated infrared receiving terminal 101, decoding single-chip microcomputer 103, single-chip microcomputer supply module 102, exchange input detection module 106, to drive and switching circuit 104 and dual-power module 105 form.The operating voltage of single-chip microcomputer is generally about 5V, so need an interchange to turn the power supply circuits of DC low-voltage, this circuit not only more complicated, and required element needs high pressure resistant, and exchanging input detecting circuit for detecting interchange input, required element is also high voltage device.In order to control two power supplys in double power-supply system, monolithic must export the power supply of control signal to the control chip in two power supplys and control, but the supply voltage of general power supply control chip has about tens volts, so monolithic cannot directly control the power supply of power supply control chip, increase by driving and switch module 104 pairs of power supply control chips are needed to control.Therefore, existing solution is complicated and high to component requirements due to peripheral circuit, and in order to decode to the output signal of integrated infrared receiving terminal, also needs a single-chip microcomputer, causes overall cost high.
In addition, although infrared remote control scheme cost is lower, current infrared remote control scheme all will join a special Infrared remote controller substantially.Existing household electrical appliance such as air-conditioning, fan, TV etc. are all equipped with remote controller substantially, and the remote controller in one family is too many, has both taken placement space, and also will have been distinguished during use, and sometimes taken by mistake unavoidably, and made troubles to user.
Summary of the invention
The technical problem to be solved in the present invention is, the above-mentioned separating element circuit cost existed for existing infrared remote control scheme is high, take up room large defect, provides a kind of integrated control chip, and comprises the LED illumination lamp of this control chip.
Another technical problem that the present invention will solve is, the LED illumination lamp existed for existing infrared remote control scheme need be equipped with special remote controller, be inconvenient to the defect that uses, provides a kind of further and can identify a kind of method of carrying out color-temperature regulating control in the control chip of the infrared control signal from multiple Infrared remote controller, the LED illumination lamp comprising this control chip and LED illumination lamp.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of control chip, its compatible infrared remote control and input switch adjusting function, and described control chip comprises:
Exchange input to detect and in-line power circuit, be the state that outside interchange input switch was powered and detected to described control chip for obtaining working power, and generate according to testing result and export the first triggering signal;
Infrared circuit, for receiving and process the infrared remote control detection signal of the infrared receiving terminal from outside, and exports the second triggering signal according to result;
Internal logic and memory circuit, for changing control logic state according to from the signal exchanging input detection and in-line power circuit and/or infrared circuit, and generate and export the status signal representing corresponding state;
Drive circuit, produces the first drive singal and the second drive singal for the status signal exported according to internal logic and memory circuit;
First switching circuit, for producing the first control signal according to the first drive singal, and is externally sent by the first control signal output pin of described control chip;
Second switch circuit, for producing the second control signal according to the second drive singal, and is externally sent by the second control signal output pin of described control chip.
In control chip of the present invention, also comprise infrared power supply voltage stabilizing circuit, its output is connected to the IRP pin of control chip, for the supply power voltage of infrared receiving terminal described in voltage stabilizing.
In control chip of the present invention,
Describedly exchange the first input end that input detects and an input of in-line power circuit is connected to the VCC pin of control chip, the VDD pin of another input termination control chip, output are connected to described internal logic and memory circuit;
The input of described infrared circuit is connected to the IRO pin of control chip, and output is connected to the second input of described internal logic and memory circuit;
The output of internal logic and memory circuit is connected to the input of described drive circuit;
First output of drive circuit is connected to the first switching circuit;
Second output of drive circuit is connected to second switch circuit.
In control chip of the present invention, described infrared circuit comprises:
Signal deteching circuit, its input is connected to described IRO pin, for detecting and receiving the infrared remote control detection signal from infrared receiving terminal;
Guidance code testing circuit, its input is connected to the output of described signal deteching circuit, detects for guiding code to the output signal of signal deteching circuit, and when described guidance code being detected, sends counting instruction; Described guidance code is the low level of at least the second initial scheduled duration;
Pulse number testing circuit, its first input end is connected to signal deteching circuit, the second input is connected to described guidance code testing circuit, for according to described counting instruction, start to carry out step-by-step counting to the output signal of signal deteching circuit, and when being more than or equal to predetermined number when pulse number in the 3rd scheduled duration, the infrared signal that transmission representative confirmation infrared receiving terminal receives is the confirmation signal of effective remote signal;
Burst pulse output circuit, its input is connected to pulse number testing circuit, the first output is connected to described internal logic and the second input of memory circuit, for exporting burst pulse as described second triggering signal according to described confirmation signal, to trigger described internal logic and memory circuit change control logic state;
Code period circuit, its input connects the second output of described burst pulse output circuit, output connects described pulse number testing circuit, makes it restart to detect counting for the described pulse number testing circuit that resets;
Close delay circuit, its input connects the second output of described burst pulse output circuit, output is connected to described signal deteching circuit, for when burst pulse output circuit exports burst pulse, pause instruction is sent to described signal deteching circuit, to make signal deteching circuit enter resting state first scheduled duration, suspend and detect infrared signal;
Power on delay circuit, its input is connected to the output of electrify restoration circuit, output is connected to described signal deteching circuit, for when control chip powers on, start signal testing circuit again after delay control four scheduled duration.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of LED illumination lamp, comprising:
First LED drive power, for powering for first group of LED;
Second LED drive power, for powering for second group of LED;
Rectifier circuit, for being converted into direct current by input AC electricity and exporting the first LED drive power and the second LED drive power to;
Exchange input switch, its first end connects AC power, and the second end is connected with the input of described rectifier circuit;
Input switch testing circuit, between its second end being connected to interchange input switch and ground, for detecting the ON/OFF state exchanging input switch, and output switch detection signal;
Infrared receiving terminal, for receiving the infrared control signal from Infrared remote controller, described infrared receiving terminal is integrated infrared receiving terminal;
Infrared receiving terminal power supply circuits, for providing working power for described infrared receiving terminal; And
Control chip as above, it is connected to described input switch testing circuit, infrared receiving terminal, infrared receiving terminal power supply circuits and the first LED drive power and the second LED drive power.
In LED illumination lamp of the present invention,
Described infrared receiving terminal power supply circuits comprise dropping resistor and the filter capacitor of series connection mutually; One end of described dropping resistor connects the output of described rectification circuit, and the other end is connected with described filter capacitor first end, the second end ground connection of described filter capacitor, and the node of described dropping resistor and filter capacitor is connected to the vdd terminal of described infrared receiving terminal;
The output of the infrared power supply voltage stabilizing circuit of described control chip is connected with the node of described divider resistance and filter capacitor, for the supply power voltage of infrared receiving terminal described in voltage stabilizing by the IRP pin of control chip.
In LED illumination lamp of the present invention,
The resistor voltage divider circuit that described input switch testing circuit comprises diode and is made up of at least two resistant series; Wherein,
The first end that the positive pole of described diode connects the second end of described interchange input switch, negative pole connects described bleeder circuit, the second end ground connection of described resistor voltage divider circuit; The output of described resistor voltage divider circuit is connected to the VCC pin of described control chip.
In LED illumination lamp of the present invention, described resistor voltage divider circuit comprises the first resistance, the second resistance and the 3rd resistance of connecting successively, wherein, the free end of the first resistance is connected with described diode, the free ending grounding of the 3rd resistance, the node between the second resistance and the 3rd resistance is the output of described resistor voltage divider circuit.
In LED illumination lamp of the present invention,
The IRO pin of described control chip is connected to the OUT end of described infrared receiving terminal;
First control signal output pin of described control chip is connected to described first LED drive power;
Second control signal output pin of described control chip is connected to described second LED drive power.
In LED illumination lamp of the present invention, between described control chip VDD pin and ground, be connected with state holding capacitor, between the turnoff time of switching over process, keep inner control logic state constant.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of method of carrying out color-temperature regulating control in LED illumination lamp as above, and described LED illumination lamp comprises at least two LED groups, and described method comprises the steps:
A, wait and reception infrared signal;
B, judge whether described infrared signal is effective remote signal, if so, then perform step C to step e; If not, then steps A is returned;
C, when judging that described infrared signal is effective remote signal, export confirmation signal, to change the control logic state of LED group;
D, according to current control logic state, output status signal with at least two LED groups described in controlling bright/put out; And
E, when judging that described infrared signal is effective remote signal, entering resting state first scheduled duration, suspending and detecting infrared signal, and returning steps A.
Carry out in LED illumination lamp of the present invention in the method for color-temperature regulating control, described step B comprises:
B1, described infrared signal guided to code and detect, comprise and judge whether the initial low duration of the output signal of infrared receiving terminal is greater than the second scheduled duration, if then execution step B2, then return steps A if not;
B2, in the 3rd scheduled duration, step-by-step counting is carried out to described infrared signal, and judge whether pulse number is more than or equal to predetermined number, if then perform step C, then return steps A if not.
Carry out in LED illumination lamp of the present invention in the method for color-temperature regulating control, before described steps A, comprise power on delay step, wherein, when described LED illumination lamp powers on, after delay control four scheduled duration, open infrared circuit again.
Carry out in LED illumination lamp of the present invention in the method for color-temperature regulating control, described LED illumination lamp comprises two LED groups, and often confirms to receive once effective remote signal, then change once described control logic state, wherein
Described control logic state comprises: the first state, the second state, the third state and holding state; And
Described control logic state varying cyclically in the following order: the first state, holding state, the second state, holding state, the third state, holding state.
Implement the present invention, there is following beneficial effect: owing to have employed integrated control chip, the cost of LED illumination lamp can be reduced, reduce the volume of control assembly, save space.Further, compare separating element circuit, integrated control chip stable performance, reliability is high, consistency good.
Have again, adopt the present invention to the technical scheme of the infrared circuit in control chip, make to use the remote controller of TV, air-conditioning, fan etc. in current most of Infrared remote controller such as family to regulate to the open and close and colour temperature that control LED illumination lamp, thus special remote controller can be equipped with, provide cost savings further, and bring convenience for user.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
It is the circuit block diagram of color-temperature regulating control circuit in double-colored temperature LED illumination lamp of the prior art shown in Fig. 1;
It is the application circuit of integrated infrared receiving terminal shown in Fig. 2 A;
It is the waveform schematic diagram of the output signal of the integrated infrared receiving terminal of Fig. 2 A shown in Fig. 2 B;
It is the circuit diagram of the drive part of LED illumination lamp according to an embodiment of the invention shown in Fig. 3;
It is the internal circuit block diagram of control chip of the present invention shown in Fig. 4;
It is the internal circuit block diagram of infrared circuit in the control chip of Fig. 4 shown in Fig. 5;
It is the oscillogram of part signal in the control procedure of LED illumination lamp of the present invention shown in Fig. 6;
Fig. 7 A is the circuit theory schematic diagram of signal deteching circuit in infrared circuit shown in Fig. 5;
Fig. 7 B is the circuit theory schematic diagram of closing delay circuit and code period circuit in infrared circuit shown in Fig. 5;
Fig. 7 C is the circuit theory schematic diagram of guidance code testing circuit in infrared circuit shown in Fig. 5;
Fig. 7 D is the circuit theory schematic diagram of pulse number testing circuit in infrared circuit shown in Fig. 5;
Fig. 7 E is the circuit theory schematic diagram of burst pulse output circuit in infrared circuit shown in Fig. 5;
Fig. 7 F is the circuit theory schematic diagram of power on delay circuit in infrared circuit shown in Fig. 5;
It is infrared circuit working timing figure according to an embodiment of the invention shown in Fig. 8;
It is the flow chart of the method for carrying out color-temperature regulating control according to an embodiment of the invention in LED illumination lamp shown in Fig. 9;
It is the detail flowchart carrying out step B in the method for color-temperature regulating control in LED illumination lamp of Fig. 9 shown in Figure 10.
Embodiment
The present invention conceives a kind of control chip, and its compatible infrared remote control and input switch color-temperature regulating controlling functions, can be used for LED illumination lamp, to carry out color-temperature regulating control to LED illumination lamp.
In an embodiment of the present invention, LED illumination lamp is double-colored warm type, such as, comprise two groups of LED of different-colour, such as first group of LED and second group of LED.
It is the circuit diagram of the drive part of LED illumination lamp according to an embodiment of the invention shown in Fig. 3, wherein comprise two LED drive power, drive the LED group of two kinds of colour temperatures respectively, control chip 310 is compatible function of infrared remote control and input switch color-temperature regulating function simultaneously, namely the program both can have been controlled by infrared remote control and simultaneously can also open and close by input switch the opening and closing controlling the first LED drive power and the second LED drive power, thus realized the regulation and control of colour temperature.
As shown in Figure 3, in this embodiment, the circuit of the drive part of LED illumination lamp comprises: the LED drive power 312 and 313 exchanging input switch 314, rectifier circuit 300, input switch testing circuit (comprising diode 302, resistance 303,304 and 305), infrared receiving terminal 301, infrared receiving terminal power supply circuits (comprising resistance 306,307 and electric capacity 308,309), state holding capacitor 311, control chip 310 and two constant currents.
Wherein, the first LED drive power 312 is for powering for first group of LED; Second LED drive power 313 is for powering for second group of LED; Rectifier circuit 300 is for being converted into direct current by input AC electricity and exporting the first LED drive power 312 and the second LED drive power 313 to; Exchange input switch 314 first end and connect AC power, the second end is connected with the input of rectifier circuit 300; Between the second end that input switch testing circuit is connected to interchange input switch 314 and ground, for detecting the ON/OFF state exchanging input switch 314, and output switch detection signal.Infrared receiving terminal 301 is for receiving the infrared control signal from Infrared remote controller.Infrared receiving terminal power supply circuits are used for providing working power for infrared receiving terminal 301.
Control chip 310 for according to the infrared remote control detection signal from input switch testing circuit and/or infrared receiving terminal 301, control first group of LED and second group of LED bright/put out state, thus the colour temperature of adjustment LED illumination lamp.Control chip 310 is connected to input switch testing circuit, infrared receiving terminal 301, infrared receiving terminal power supply circuits and the first LED drive power 312 and the second LED drive power 313.Specifically, the IRO pin of control chip 310 be connected to the OUT end of infrared receiving terminal 301, the switch detection signal output that IRP pin is connected to the vdd terminal of infrared receiving terminal 301, the VCC pin of control chip 310 is connected to input switch testing circuit of control chip 310, control chip 310 VDD pin by state holding capacitor 311 ground connection.First control signal output pin P1 of control chip is connected to the first LED drive power 312, the second control signal output pin P2 of control chip is connected to the second LED drive power 313.Such as, the LED drive power 312 and 313 of constant current can be isolation Flyback configuration or non-isolated buck configuration, LED drive power 312 and 313 can comprise a current constant control chip separately, the supply pin (as VCC1 and VCC2, not shown) of two current constant control chips is connected with the P1 pin of control chip 310 and P2 pin respectively.
The resistor voltage divider circuit that input switch testing circuit comprises diode 302 and is composed in series successively by the first resistance 303, second resistance 304 and the 3rd resistance 305.Wherein, the positive pole of diode 302 connects and exchanges the second end of input switch 314, the first end of negative pole connecting resistance bleeder circuit, the second end ground connection of resistor voltage divider circuit; The free end of the first resistance 303 is connected with described diode 302, the free ending grounding of the 3rd resistance 305, and the node between the second resistance 304 and the 3rd resistance 305 is the output of resistor voltage divider circuit, and this output is connected to the VCC pin of control chip 310.It should be noted that, resistor voltage divider circuit also can adopt two resistant series compositions, and such as, the first resistance 303, second resistance 304 can replace with the resistance that another resistance is suitable.As is known to the person skilled in the art, resistor voltage divider circuit also can adopt the resistant series composition more than three.In operation, input switch testing circuit will be input to the VCC pin of control chip 310 after the signal rectification dividing potential drop of second end (output) of interchange input switch 314, except can be used for sense switch state, also for powering to control chip 310.
Infrared receiving terminal power supply circuits comprise dropping resistor (comprising resistance 306 and 307) and the filter capacitor 308,309 of series connection mutually; One end of dropping resistor connects the output (positive terminal) of rectification circuit 300, the other end is connected with filter capacitor 308 first end, second end ground connection of filter capacitor 308, and the node of dropping resistor and filter capacitor is connected to the vdd terminal of outer Receiver 301.In one embodiment, as preferably, infrared receiving terminal 301 is integrated infrared receiving terminals.In addition, dropping resistor, except can being made up of resistance 306 and 307, can also being replaced by single resistance, also can be made up of three or more resistance.Generally, the input of infrared receiving terminal power supply circuits is connected to the positive pole of rectifier bridge, and it exports the supply pin VDD being connected to infrared receiving terminal, and is connected to the IRP pin of control chip.Integration infrared receiving terminal accepts the infrared signal that Infrared remote controller is launched, and converts level signal to, is input to the IRO pin of control chip 310.
Be connected with state holding capacitor 311 between the VDD pin of control chip 310 and ground, between the turnoff time of switching over process, keep inner control logic state constant.State holding capacitor 311 for powering to control chip 310 when input switch disconnects, with the control logic state of retentive control chip 310 inside.Due to when input switch is opened a way, the operating current of control chip 310 has dropped to about 1uA, so the time that the state that can be adjusted by the size changing storage capacitor is kept.
It is the internal circuit block diagram of the control chip of one embodiment of the invention shown in Fig. 4.As shown in Figure 4, control chip 310 comprises: exchange input and detect and in-line power circuit 403, infrared circuit 402, infrared power supply voltage stabilizing circuit 401, internal logic and memory circuit 404, drive circuit 405, first switching circuit 409 and second switch circuit 408, resistance 406 and 407.
Wherein, the first input end that input detects and an input of in-line power circuit (403) is connected to the VCC pin of control chip 310, the VDD pin of another input termination control chip 310, output are connected to internal logic and memory circuit (404) is exchanged; The input of infrared circuit (402) is connected to the IRO pin of control chip, and output is connected to the second input of described internal logic and memory circuit (404); The output of internal logic and memory circuit (404) is connected to the input of drive circuit (405); First output of drive circuit (405) is connected to the first switching circuit (comprise pull down switch 409 and current-limiting resistance 406); Second output of drive circuit (405) is connected to second switch circuit (comprise pull down switch 408 and current-limiting resistance 407) 408.
First switching circuit is connected to the first control signal output pin P1 of control chip 310; Second switch circuit is connected to the second control signal output pin P2 of control chip 310.Particularly, two outputs of drive circuit 405 are extremely connected with the control of pipe 408 with 409 that pulls down switch respectively, pull down switch pipe 408 with 409 source electrode be connected with ground wire, drain electrode respectively with current-limiting resistance 407 with 406 one end be connected, resistance 406 with 407 other one end be connected with P1 with the P2 pin of control chip 400 respectively.It should be noted that, the first switching circuit and second switch circuit are not limited to the embodiment shown in Fig. 4, and other modes opened and/or close that can control LED drive power 312 and 313 also can be adopted to realize.
The output of infrared power supply voltage stabilizing circuit 401 is connected to the IRP pin of control chip 310, is connected with the dropping resistor of infrared receiving terminal power supply circuits and the node of filter capacitor, for the supply power voltage of the infrared receiving terminal of voltage stabilizing outside.In one embodiment, when adopting operating voltage to be the integrated infrared receiving terminal of 5V, infrared power supply voltage stabilizing circuit 401 the is built-in voltage stabilizing circuit of a 5V, for carrying out voltage stabilizing to the supply power voltage of infrared receiving terminal.。As selection, infrared power supply voltage stabilizing circuit 401 also can not be integrated in control chip 310, and is set directly in infrared receiving terminal power supply circuits as a split circuit, and the integrated level of certain this scheme is low, and cost is higher.
In the present embodiment, exchange input to detect and in-line power circuit 403 is powered for obtaining working power so that for control chip 310 and detects the state of outside interchange input switch, and generate according to testing result and export the first triggering signal to internal logic and memory circuit 404.Infrared circuit 402 for receiving and process the infrared remote control detection signal of the infrared receiving terminal from outside, and exports the second triggering signal to internal logic and memory circuit 404 according to result.Internal logic and memory circuit 404 for changing control logic state according to from the signal exchanging input detection and in-line power circuit 403 and/or infrared circuit 402, and generate and export the status signal representing corresponding state.Drive circuit 405 produces the first drive singal and the second drive singal for the status signal exported according to internal logic and memory circuit 404.First switching circuit is used for producing the first control signal according to the first drive singal, and is externally sent by the first control signal output pin P1 of control chip 310.Second switch circuit is used for producing the second control signal according to the second drive singal, and is externally sent by the second control signal output pin P2 of control chip 310.
The operation principle that LED illumination lamp of the present invention carries out color-temperature regulating control is as follows:
1, exchange input switch to control:
When interchange input switch 314 closes, there is high level in the output of input switch testing circuit, control chip 310 carries out clamper and detection by VCC pin to this waveform, the square wave counter that interchange input detects and in-line power circuit 403 is built-in of control chip counts this waveform, occur two pulses continuously when detecting, control chip just thinks that exchanging input switch 314 closes; When exchanging input switch 314 and disconnecting, the output level of switch detection circuit becomes low level, and the VCC pin of control chip 310 does not detect high level, and keeps a period of time, and control chip 310 just thinks that exchanging input switch 314 opens a way.The signal that control chip 310 detects according to VCC pin changes inner state, thus realizes the circulation change of different conditions.When interchange input switch 314 forwards disconnection to from closure state, the logic state of control chip inside can keep a period of time, during this period of time again input switch 314 is closed, then control chip thinks that on-off control action is effective, if exceed this time, control chip can reset again, and again during closed input switch, state gets back to again first state.State retention time is determined by state holding capacitor 311 as shown in Figure 3, if need the retention time growing a bit, then can use large some electric capacity, otherwise can with a little bit smaller electric capacity.
When input switch closes, input detecting circuit detects input waveform, and exports the VCC pin of a square wave to described control chip, if after this square wave continues for some time, control chip just thinks that input switch closes.When input switch is opened a way, input detecting circuit can't detect waveform, and the output of this testing circuit is low level, if this low level continues for some time, control chip just thinks that input switch disconnects.Control chip is detected input switch by input detecting circuit, and then controls internal state.
2, infrared remote control controls:
In one embodiment, the infrared receiving terminal 301 of integration is for accepting the signal of Infrared remote controller transmitting, its output OUT is connected with the IRO of control chip 310, and the power supply circuits that resistance (306 and 307) and electric capacity 308 form are used for powering to the infrared receiving terminal 301 of integration.Operating voltage due to the infrared receiving terminal 301 of integration is 5V, and its inside does not have voltage stabilizing circuit, so the voltage stabilizing circuit of the built-in 5V of the IRP pin inner portions of control chip 310.
The order of two LED drive power when infrared remote control controls as shown in Figure 6, wherein waveform 600 represents the action of Infrared remote controller, high level represents a button in Infrared remote controller and is pressed once, what waveform 601 represented is the output signal of infrared circuit 402, waveform 602 and waveform 603 represent LED drive power 1 and LED drive power 2 respectively, high level represents LED drive power and opens, and low level represents LED drive power and closes.According to Fig. 6, when state 1, press any button in a remote controller once, two LED drive power are all closed, enter into standby state, again press any button in a remote controller, two LED drive power get the hang of 2, again press any button in a remote controller, two LED drive power enter holding state again, again press any button in a remote controller, two LED drive power get the hang of 3, again press any button in a remote controller, two LED drive power enter holding state, so far one-period is completed, if again press any button in a remote controller, two LED drive power get the hang of 1 again, circulation like this.Two LED drive power states in above-mentioned in each state can be any combinations, and can modify according to the needs of application, namely in above-mentioned each state, the state of two LED drive power just illustrates.When infrared remote control, have a holding state between each state, reason is that conveniently user closes LED lamp by Infrared remote controller.If be in any state (state 1,2 or 3), do not use infrared remote control, but when using input switch to control, close when input switch and open once, the state of system can not enter holding state as during infrared remote control, but directly enters next state; If be in holding state, do not use infrared remote control, but when using input switch to control, close when input switch and open once, the state of system will directly enter next state as infrared remote control.
Another design of the present invention be to provide a kind of can the infrared remote control scheme of compatible all common Infrared remote controller, as long as and any button in pressing Infrared remote controller can regulate the colour temperature of LED.In order to identify the signal that Infrared remote controller is launched, the present invention proposes a kind of brand-new infrared signal detection mode.The peripheral applications circuit of integration infrared receiving terminal as shown in Figure 2 A, button in pressing remote controller, the signal output waveform of the output OUT of Receiver 200 is as shown in waveform 203 in Fig. 2 B, waveform 203 is the schematic diagram of signal, main in two sub-sections, i.e. guidance code and systematic code and numeric data code.Feature in guidance code is the low level having one section of lasting more than 4ms, the low duration of the guidance code of different remote controllers is different, then be then the high level of duration an about 2ms, systematic code and numeric data code after guidance code, the cycle of being characterized in is the impulse waveform of several milliseconds, and this impulse waveform duration is more than 100ms.
In order to the Infrared remote controller that compatibility is all, and avoid the misoperation that noise effect causes again, the work schedule of the infrared signal detection scheme that the present invention proposes as shown in Figure 8, first infrared circuit judges whether the output signal of infrared receiving terminal has the duration more than the low level of 3ms, if do not had, infrared circuit enters wait state, otherwise whether infrared circuit can detect in 200ms exists more than 12 impulse waveforms, if do not detect more than 12 pulses in 200ms, then infrared circuit can reenter wait state, if can detect more than 12 pulses in 200ms, infrared circuit just thinks that any one button in Infrared remote controller is pressed once, infrared circuit is once detect that button is pressed once, at once 200ms closed condition is entered, namely within this time period, infrared circuit can not be made a response to integrated infrared receiver head output signal.
In order to realize above-mentioned infrared remote control scheme, the present invention devises infrared circuit as shown in Figure 5.As shown in Figure 5, infrared circuit 402 comprises: signal deteching circuit 501, guidance code testing circuit 503, pulse number testing circuit 504, burst pulse output circuit 506, code period circuit 505, closedown delay circuit 502 and power on delay circuit 507.
The input of signal deteching circuit 501 is connected to the IRO pin of control chip 310, for detecting and receiving the infrared remote control detection signal from infrared receiving terminal; The input of guidance code testing circuit 503 is connected to the output of signal deteching circuit 501, detects for guiding code to the output signal of signal deteching circuit 501, and when described guidance code being detected, sends counting instruction; Described guidance code is the low level of initial at least the second scheduled duration (such as 3ms); The first input end of pulse number testing circuit 504 is connected to signal deteching circuit 501, second input and is connected to guidance code testing circuit 503, for according to counting instruction, start to carry out step-by-step counting to the output signal of signal deteching circuit 501, and when being more than or equal to predetermined number when pulse number in the 3rd scheduled duration (such as 200ms), the infrared signal that transmission representative confirmation infrared receiving terminal receives is the confirmation signal of effective remote signal; Burst pulse output circuit 506, its input is connected to the second input that pulse number testing circuit 504, first output is connected to described internal logic and memory circuit 404, for exporting burst pulse as described second triggering signal according to described confirmation signal, to trigger described internal logic and memory circuit 404 changes control logic state; The input of code period circuit 505 connects the second output, the output connection pulse number testing circuit 504 of described burst pulse output circuit 506, makes it restart to detect counting for reset pulse number testing circuit 504.Such as, if the pulse of predetermined number do not detected in the 3rd scheduled duration, control chip no longer counts, and again could detect pulse, and need reset pulse number testing circuit 504 after needing again to detect the low level of the second scheduled duration.Moreover when burst pulse output circuit 506 receives the confirmation signal of pulse number testing circuit 504, confirm that infrared signal is effective remote signal, code period circuit 505 sends reset signal, reset pulse number testing circuit 504 is made to make it restart counting.
The input of closing delay circuit 502 connects the second output of burst pulse output circuit 506, output is connected to signal deteching circuit 501, for when burst pulse output circuit 506 exports burst pulse, pause instruction is sent to signal deteching circuit 501, to make signal deteching circuit 501 enter resting state first scheduled duration (200ms), suspend and detect infrared signal.
The input of power on delay circuit 507 is connected to the output (not shown) of inner electrify restoration circuit, output is connected to described signal deteching circuit 501, for when control chip powers on, start signal testing circuit 501 again after delay control four scheduled duration (4s).This power on delay circuit is the power-on reset signal of detection control chip internal, and with this signal as the starting point postponed.
Change a kind of saying, infrared circuit receives the output signal of infrared receiving terminal, and judges whether the signal received is the signal meeting specification, is also noise.The built-in power on delay circuit of infrared circuit, closes the function of infrared circuit within a period of time of beginning that powers on.The built-in guidance code testing circuit of infrared circuit, namely infrared circuit continues the low level of 3ms as guidance code using IRO.Infrared circuit built-in system code and numeric data code circuit, namely infrared circuit is 12 pulses occurred after guidance code, and these 12 pulses must in 200ms in occur.The built-in cut out delay circuit of infrared circuit, i.e. stabilization function, the interval time between twice infrared signal must be greater than 200ms, otherwise infrared circuit can not done the infrared signal occurred below and reacted.
Specifically implement as one, Fig. 7 A to Fig. 7 F gives the circuit theory diagrams of each circuit module in infrared circuit 402 shown in Fig. 5.Wherein:
Fig. 7 A is the circuit theory schematic diagram of signal deteching circuit 501, and it forms primarily of Zener diode, gate and RC delay circuit.
Fig. 7 B is the circuit theory schematic diagram of closing delay circuit 502 and code period circuit 505, and it forms primarily of shift counter.
Fig. 7 C is the circuit theory schematic diagram of guidance code testing circuit 503, and it forms primarily of shift counter.
Fig. 7 D is the circuit theory schematic diagram of pulse number testing circuit 504, and it is primarily of shift counter and narrow-pulse generation circuit composition.
Fig. 7 E is the circuit theory schematic diagram of burst pulse output circuit 506, and it is primarily of gate and RC delay circuit composition.
Fig. 7 F is the circuit theory schematic diagram of power on delay circuit 507, and it forms primarily of shift counter.
It will be appreciated that the embodiment shown in Fig. 7 A to Fig. 7 F is only in order to the present invention is described, but the infrared circuit in control chip of the present invention is not limited to this embodiment.
It is the flow chart of the method for carrying out color-temperature regulating control according to an embodiment of the invention in LED illumination lamp shown in Fig. 9.As shown in Figure 9, the method that the present invention carries out color-temperature regulating control in LED illumination lamp comprises the steps:
In step, be in LED group in the LED illumination lamp of the state of working on power and keep current state work, the standby wait infrared remote-controlled signal of infrared circuit in infrared receiving terminal and control chip, and when there is infrared signal reception infrared signal;
In stepb, infrared circuit judges whether the infrared signal received is effective remote signal, if so, then performs step C to step e; If not, then steps A is returned;
In step C, when infrared circuit judges that the infrared signal received is effective remote signal, then export confirmation signal to internal logic and memory circuit, to change the control logic state of LED group;
In step D, internal logic and memory circuit according to the current control logic state after changing, output status signal to drive circuit with control at least two LED groups in LED illumination lamp bright/put out.Such as two LED groups, operating state comprises: two LED groups are all bright; Two LED groups are all put out; First LED group is bright, and the second LED group is put out; And first LED group put out, the second LED group is bright.
In step e, when infrared circuit judges that the infrared signal received is effective remote signal, infrared circuit enters resting state first scheduled duration (such as 200ms) immediately, suspend and detect infrared signal, and the method returns steps A.
It is the detail flowchart carrying out step B in the method for color-temperature regulating control in LED illumination lamp of Fig. 9 shown in Figure 10.As shown in Figure 10, step B comprises:
Step B1, infrared circuit guide code to received infrared signal and detect, comprise and judge whether the initial low duration of the output signal of infrared receiving terminal is greater than the second scheduled duration (such as 3ms), if then perform step B2, then return steps A if not;
Step B2, in the 3rd scheduled duration (such as 200ms, timing from first pulse occurs), step-by-step counting is carried out to infrared signal, and judge whether pulse number is more than or equal to predetermined number (such as 12 pulses), if then perform step C, then return steps A if not.
In some embodiments of the invention, before steps A, comprise power on delay step, wherein, when LED illumination lamp powers on, after delay control four scheduled duration (such as 4s), open infrared circuit again.
In one embodiment of this invention, LED illumination lamp comprises two LED groups, and often confirms to receive once effective remote signal, then change once described control logic state, wherein
Control logic state comprises: the first state, the second state, the third state and holding state; And
Control logic state varying cyclically in the following order: the first state, holding state, the second state, holding state, the third state, holding state.
Such as, the LED group that each state is corresponding bright/state of putting out is: the first state: two LED groups are all bright; Second state: the first LED group is bright, the second LED group is put out; The third state: the first LED group is put out, the second LED group is bright; Holding state: two LED groups are all put out.
Separately it should be noted that, aforementioned first scheduled duration (such as 200ms), the second scheduled duration (such as 3ms), the 3rd scheduled duration (such as 200ms) and the 4th scheduled duration (such as 4s), the duration most preferred embodiment of listed in parentheses is only the order of magnitude in order to these durations are described, the present invention is not limited thereto.According to the characteristic of circuit design and most of infrared remote-controlled signal; those skilled in the art can select else and select one group of duration standard; such as; first scheduled duration and the 3rd scheduled duration can be selected in 200 ± 20ms, the second scheduled duration can be selected within the scope of 3 ± 0.3ms, the 4th scheduled duration can be selected in 4 ± 0.4s; as long as infrared circuit can be made normally to work according to the duration selected, correctly judge effective infrared remote-controlled signal, all belong to protection scope of the present invention.
Control chip 310 of the present invention can compatible switch regulate and control and infrared remote control simultaneously, namely the scheme that the present invention as shown in Figure 3 proposes can receive the signal of common Infrared remote controller, the action of test cross stream input switch can also be added simultaneously, namely can be regulated LED colour temperature by the action of input switch.Integration infrared receiving terminal is easy to be subject to outside interference, so the misoperation in order to avoid causing due to interference, and the function of the built-in multiple filtering interfering of control chip 310.First, control chip 310 makes function of infrared remote control lose efficacy in front 4 seconds after the power-up, namely any reaction is not done to the output signal of integrated infrared receiving terminal, because the power supply electric capacity of infrared receiving terminal charges when powering on, there will be electricity shortage or supply power voltage instability, at this moment be easy to the misoperation causing infrared receiving terminal, the output of power on delay circuit 507 as shown in Figure 5 is as the enable signal of signal deteching circuit 501; Second according to the structure (as shown in Figure 2) of infrared coding, the testing circuit of the built-in guidance code testing circuit of control chip 310 and systematic code and numeric data code; The infrared circuit of the 3rd control chip 310 is once detect that remote controller key is pressed once, and infrared circuit enters 200ms closed condition at once.
The present invention conceives the control chip of a kind of compatible infrared remote control and input switch adjusting function, can be used for LED illumination lamp.For the ease of using, the present invention is integrated together switch control rule and infrared remote control.
The present invention is mainly in order to simplify infrared remote control scheme, a kind of omnipotent infrared remote control scheme is proposed, the program can compatible all infrared remote controls (such as, TV, air-conditioning and other infrared remote controller for household electric appliances), the program without the need to being equipped with special Infrared remote controller, and infrared remote-controlled signal to accept circuit very simple.
The present invention proposes a kind of brand-new colour temperature control program, the program not only can by exchanging opening and close and controlling the power supply of two in double power-supply system of input switch, but also can be controlled by infrared remote control, the infrared remote control scheme that the program proposes does not need to join special Infrared remote controller, the program can compatible all infrared remote controls (such as, TV, air-conditioning and other infrared remote controller for household electric appliances), and any button pressed in remote controller can regulate colour temperature, namely once the similar switch with input switch is once for the button pressing a remote controller.
Above embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement accordingly, can not limit the scope of the invention.All equalizations done with the claims in the present invention scope change and modify, and all should belong to the covering scope of the claims in the present invention.
Claims (10)
1. a control chip, its compatible infrared remote control and input switch adjusting function, is characterized in that, described control chip comprises:
Exchange input to detect and in-line power circuit (403), be the state that outside interchange input switch was powered and detected to described control chip for obtaining working power, and generate according to testing result and export the first triggering signal;
Infrared circuit (402), for receiving and process the infrared remote control detection signal of the infrared receiving terminal from outside, and exports the second triggering signal according to result;
Internal logic and memory circuit (404), for changing control logic state according to from the signal exchanging input detection and in-line power circuit (403) and/or infrared circuit (402), and generate and export the status signal representing corresponding state;
Drive circuit (405), produces the first drive singal and the second drive singal for the status signal exported according to internal logic and memory circuit (404);
First switching circuit, for producing the first control signal according to the first drive singal, and is externally sent by the first control signal output pin (P1) of described control chip;
Second switch circuit, for producing the second control signal according to the second drive singal, and is externally sent by the second control signal output pin (P2) of described control chip.
2. control chip according to claim 1, is characterized in that, also comprise infrared power supply voltage stabilizing circuit (401), its output is connected to the IRP pin of control chip, for the supply power voltage of infrared receiving terminal described in voltage stabilizing.
3. control chip according to claim 2, is characterized in that,
Describedly exchange the first input end that input detects and an input of in-line power circuit (403) is connected to the VCC pin of control chip, the VDD pin of another input termination control chip, output are connected to described internal logic and memory circuit (404);
The input of described infrared circuit (402) is connected to the IRO pin of control chip, and output is connected to the second input of described internal logic and memory circuit (404);
The output of internal logic and memory circuit (404) is connected to the input of described drive circuit (405);
First output of drive circuit (405) is connected to the first switching circuit;
Second output of drive circuit (405) is connected to second switch circuit.
4. control chip according to claim 3, is characterized in that, described infrared circuit (402) comprising:
Signal deteching circuit (501), its input is connected to described IRO pin, for detecting and receiving the infrared remote control detection signal from infrared receiving terminal;
Guidance code testing circuit (503), its input is connected to the output of described signal deteching circuit (501), detect for guiding code to the output signal of signal deteching circuit (501), and when described guidance code being detected, send counting instruction; Described guidance code is the low level of at least the second initial scheduled duration;
Pulse number testing circuit (504), its first input end is connected to signal deteching circuit (501), the second input is connected to described guidance code testing circuit (503), for according to described counting instruction, start to carry out step-by-step counting to the output signal of signal deteching circuit (501), and when being more than or equal to predetermined number when pulse number in the 3rd scheduled duration, the infrared signal that transmission representative confirmation infrared receiving terminal receives is the confirmation signal of effective remote signal;
Burst pulse output circuit (506), its input is connected to pulse number testing circuit (504), the first output is connected to described internal logic and the second input of memory circuit (404), for exporting burst pulse as described second triggering signal according to described confirmation signal, to trigger described internal logic and memory circuit (404) change control logic state;
Code period circuit (505), its input connects the second output of described burst pulse output circuit (506), output connects described pulse number testing circuit (504), makes it restart to detect counting for the described pulse number testing circuit (504) that resets;
Close delay circuit (502), its input connects the second output of described burst pulse output circuit (506), output is connected to described signal deteching circuit (501), for when burst pulse output circuit (506) exports burst pulse, pause instruction is sent to described signal deteching circuit (501), to make signal deteching circuit (501) enter resting state first scheduled duration, suspend and detect infrared signal;
Power on delay circuit (507), its input is connected to the output of electrify restoration circuit, output is connected to described signal deteching circuit (501), for when control chip powers on, start signal testing circuit (501) again after delay control four scheduled duration.
5. a LED illumination lamp, is characterized in that, comprising:
First LED drive power (312), for powering for first group of LED;
Second LED drive power (313), for powering for second group of LED;
Rectifier circuit (300), for being converted into direct current by input AC electricity and exporting the first LED drive power (312) and the second LED drive power (313) to;
Exchange input switch (314), its first end connects AC power, and the second end is connected with the input of described rectifier circuit (300);
Input switch testing circuit, between its second end being connected to interchange input switch (314) and ground, for detecting the ON/OFF state exchanging input switch (314), and output switch detection signal;
Infrared receiving terminal (301), for receiving the infrared control signal from Infrared remote controller, described infrared receiving terminal (301) is integrated infrared receiving terminal;
Infrared receiving terminal power supply circuits, for providing working power for described infrared receiving terminal (301); And
Control chip (310) as described in claim 3 or 4, it is connected to described input switch testing circuit, infrared receiving terminal (301), infrared receiving terminal power supply circuits and the first LED drive power (312) and the second LED drive power (313).
6. LED illumination lamp according to claim 5, is characterized in that,
Described infrared receiving terminal power supply circuits comprise dropping resistor and the filter capacitor of series connection mutually; One end of described dropping resistor connects the output of described rectification circuit, the other end is connected with described filter capacitor first end, second end ground connection of described filter capacitor, and the node of described dropping resistor and filter capacitor is connected to the vdd terminal of described infrared receiving terminal (301);
The output of the infrared power supply voltage stabilizing circuit (401) of described control chip is connected with the node of described divider resistance and filter capacitor, for the supply power voltage of infrared receiving terminal described in voltage stabilizing by the IRP pin of control chip.
7. in the LED illumination lamp as described in claim 5 or 6, carry out a method for color-temperature regulating control, described LED illumination lamp comprises at least two LED groups, it is characterized in that, described method comprises the steps:
A, wait and reception infrared signal;
B, judge whether described infrared signal is effective remote signal, if so, then perform step C to step e; If not, then steps A is returned;
C, when judging that described infrared signal is effective remote signal, export confirmation signal, to change the control logic state of LED group;
D, according to current control logic state, output status signal with at least two LED groups described in controlling bright/put out; And
E, when judging that described infrared signal is effective remote signal, entering resting state first scheduled duration, suspending and detecting infrared signal, and returning steps A.
8. method according to claim 7, is characterized in that, described step B comprises:
B1, described infrared signal guided to code and detect, comprise and judge whether the initial low duration of the output signal of infrared receiving terminal is greater than the second scheduled duration, if then execution step B2, then return steps A if not;
B2, in the 3rd scheduled duration, step-by-step counting is carried out to described infrared signal, and judge whether pulse number is more than or equal to predetermined number, if then perform step C, then return steps A if not.
9. the method according to claim 7 or 8, is characterized in that, comprises power on delay step before described steps A, wherein, when described LED illumination lamp powers on, opens infrared circuit again after delay control four scheduled duration.
10. the method according to claim 7 or 8, is characterized in that, described LED illumination lamp comprises two LED groups, and often confirms to receive once effective remote signal, then change once described control logic state, wherein
Described control logic state comprises: the first state, the second state, the third state and holding state; And
Described control logic state varying cyclically in the following order: the first state, holding state, the second state, holding state, the third state, holding state.
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Effective date of registration: 20210316 Address after: Building C, No.888, Huanhu West 2nd Road, Lingang New District, Pudong New Area pilot Free Trade Zone, Shanghai Patentee after: Shanghai Xinfei Semiconductor Technology Co.,Ltd. Address before: No.908, AVIC south tower, No.7 beilangshan Road, Science Park, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: SILICON DRIVER SEMICONDUCTOR Co.,Ltd. |