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WO2019095367A1 - Puce et procédé de commande de réglage de température de couleur de commutateur de led, et lampe d'éclairage à del - Google Patents

Puce et procédé de commande de réglage de température de couleur de commutateur de led, et lampe d'éclairage à del Download PDF

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Publication number
WO2019095367A1
WO2019095367A1 PCT/CN2017/111871 CN2017111871W WO2019095367A1 WO 2019095367 A1 WO2019095367 A1 WO 2019095367A1 CN 2017111871 W CN2017111871 W CN 2017111871W WO 2019095367 A1 WO2019095367 A1 WO 2019095367A1
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WIPO (PCT)
Prior art keywords
circuit
state information
control signal
logic state
control
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Application number
PCT/CN2017/111871
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English (en)
Chinese (zh)
Inventor
胡小波
郑曰
廖为明
Original Assignee
深圳市芯飞凌半导体有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to PCT/CN2017/111871 priority Critical patent/WO2019095367A1/fr
Publication of WO2019095367A1 publication Critical patent/WO2019095367A1/fr

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Classifications

    • 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]
    • 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]
    • H05B45/20—Controlling the colour of the light

Definitions

  • I I is also a color temperature scheme implemented by an existing control chip, which is very complicated, and requires an independent detection circuit to detect the input switch action. Complex circuits not only cause the cost of the drive power
  • FIG. 1 The most common dual power switch color temperature scheme is shown in FIG. 1.
  • the switch color temperature control chip 108 detects the state of the input switch 100 by detecting the input waveform 101. And controlling the state of the dual constant current power supply system 110 according to the state of the input switch 100.
  • the dual constant current power supply system 110 is shown in FIG. 1.
  • Chip control, the pin and foot of the switch color temperature control chip in the scheme shown in FIG. 1 are respectively connected to the power pins of two driving chips in the dual constant current power system, and are used for controlling the opening and closing of the driving chip. .
  • the scheme shown in FIG. 1 can only implement the switch color temperature function, that is, the state can only be maintained for a short period of time after power-off, because the state retention time is determined by the size of the capacitor 107 .
  • the switching regulator 108 is powered by the color temperature control chip energy capacitor 107, the capacitor 107 when the state of the energy bled off the switching regulator chip 108 to maintain color temperature control disappears, returns to the initial state.
  • the status may not be what the user likes. Therefore, the user needs to switch back to his favorite through the switch ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871 status, it may take several switching actions to switch to its favorite state, the operation is cumbersome, for use
  • a power detection and control signal generating circuit configured to detect a power signal, generate and output a control signal according to the power signal
  • a logic state control circuit configured to output logic state information according to the control signal, and when the time interval that the power input switch is turned off and closed is greater than the first predetermined duration, the control chip directly enters the power input switch before being disconnected Logic state
  • a driving circuit that receives logic state information output by the logic state control circuit, and accordingly drives the output
  • logic state control circuit comprises:
  • a state information storage unit configured to store logic state information after the internal logic state of the control chip is stable, and still retain data after power off;
  • a state temporary storage and switching unit communicatively coupled to the state information storage unit, and selectively performing an operation of: acquiring logic state information from the state information storage unit or temporarily storing the logic information under the control of the control unit Transmitting status information to the status information storage unit; and switching to the next logic state and temporarily storing logic state information of the next logic state according to the currently temporarily stored logic state information and a predetermined logical order;
  • a control unit configured to perform the following operations according to the control signal: ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871
  • the first control end and the second control end of the 1 ⁇ ) switch color temperature control chip are connected to the power supply pin of the dual constant current power supply;
  • the method includes the following steps:
  • detecting a power signal determining, according to the power signal, whether a time interval of opening, closing, and opening-closing of the power input switch is greater than a first predetermined duration, and generating and outputting a corresponding control signal according to the determination result;
  • the LED switch color temperature control chip of the present invention has a state information storage unit for storing logic state information after the internal logic state of the control chip is stabilized, it is powered off. After that, the data can still be maintained, that is, the state when the power is turned off last time can be memorized; and when the time interval between the power input switch being turned off and closed is greater than the first predetermined time period, the logic state control circuit causes the control chip to directly enter before the power input switch is turned off.
  • the logic state that is, after the user switches to the favorite state, the state of the power-on control chip is turned on before the last time the light is turned off, and there is no need to switch through the switch again.
  • the LED switch color temperature control chip of the present invention can reduce the volume of the driving power source and reduce the cost by integrating the power source detecting and control signal generating circuit, the logic state control circuit, the driving circuit, the internal power supply circuit and the like on one chip.
  • the internal power supply circuit includes a power supply VDD and the output terminal of the power output terminal VCC, VDD power supply terminal dedicated to providing an output to the VDD power supply and a switching state storage unit, purpose of this design
  • VDD power supply terminal dedicated to providing an output to the VDD power supply
  • switching state storage unit purpose of this design
  • the LED switch color temperature control chip also rewrites the information in the internal register to the state information storage unit after each startup and continuous operation for a period of time, and ensures the state information storage unit. The information in it will not be lost. At the same time, it is possible to avoid frequent reading and writing of the status information storage unit to extend its service life.
  • a third delay control signal s60ms ⁇ _ at least a predetermined time interval is to ensure that when the state of writing information to the system information storage unit stable logic state.
  • FIG. 1 is a diagram of a conventional dual power LED color temperature control circuit of the switching regulator
  • FIG. 2 is a block diagram of a first embodiment of an LED color temperature control circuit of the switching regulator of the present invention, wherein double ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871 constant current power supply;
  • the present invention contemplates a brand new 1 ⁇ ) color temperature adjustment scheme, as shown in FIG. 2 , in the present invention 1 ⁇ ) switching modulation
  • the output terminal waveform 201 of the switch 200 is detected, and the state of the input switch 200 is judged based on the waveform 201 . Since the voltage at the output of the input switch 200 is a high voltage of several hundred volts, the 0 pin and the input switch
  • Switch color temperature control chip 208 ? 1 and 2 are connected to the power supply pins of the two power control chips in the dual constant current power supply system 209 for controlling the opening and closing of the power control chip.
  • ? 1 and? 2 The internal pull-down circuit, when it is necessary to turn off one of the dual constant current power supply system 209 , only need to pull the power supply pin of the corresponding power control chip through the internal pull-down circuit.
  • the temperature control chip 208 internally has a state information storage unit capable of retaining data after the power is turned off, and the state information storage unit is configured to record the current state of the control chip, and the state information storage unit capable of maintaining data after the power is turned off has a power failure. Save the characteristics of the information, and can maintain it for a long time, so it can be
  • the color temperature of the initial state may not be the color temperature that the user likes, in order to adjust to the preferred color temperature.
  • the power source detection and control signal generating circuit 320 is configured to detect a power source signal, generate and output a control signal according to the power source signal.
  • a logic state control circuit 330 for outputting logic state information according to the control signal, and when the power is input
  • a driving circuit 340 which receives logic state information output by the logic state control circuit, and accordingly drives the output
  • control circuit 330 further comprising:
  • the state information storage unit 308 is configured to store logic state information after the internal logic state of the control chip is stabilized, and can still maintain data after the power is turned off.
  • a state temporary storage and switching unit 313, which is communicably connected to the state information storage unit, and selectively performs an operation of acquiring logic state information or temporarily storing the logic state from the state information storage unit under the control of the control unit.
  • the information is transferred to the status information storage unit; and according to the currently temporarily stored logic status information and the predetermined logical order, switching to the next logic state and temporarily storing the logic status information of the next logic state.
  • control unit 331 performs the following operations according to the control signal:
  • one of the control state information storage unit and the state temporary storage and switching unit outputs the stored or temporarily stored logic state information to the driving circuit
  • control state temporary storage and switching unit switches to the next logic state and temporarily stores the logic state information of the next logic state.
  • the drive circuit 340 and the power detection and control signal generating circuit 320 are Compared with the embodiment shown in Figure 3, the figure
  • switch input signal detecting circuit 3 ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871
  • the signal generating circuit 322 generates a control signal from the latter and transmits it to the control circuit 331 in the logic state control circuit 330 .
  • the hold time of the state information temporarily stored in the temporary storage and switching unit 313 is provided by the power supply output terminal (: (: power supply as the working power supply.
  • control signal may be implemented by a hardware circuit, or may be implemented by software or a combination of software and hardware.
  • the power generated by the detection circuit detects a signal from the signal circuit (e.g., a signal generating chip) installed in the control program determines that the input power OFF switch 200, the closure according to the power signal, and off Whether the time interval of opening and closing is greater than the first predetermined time length, and generating and outputting a corresponding control signal according to the judgment result.
  • a signal from the signal circuit e.g., a signal generating chip
  • the state information and the simultaneous control state information storage unit transfer the stored logic state information to the temporary storage in the state temporary storage and switching unit.
  • a second control signal is generated and outputted to control the state temporary storage and the switching unit switches to the next logic state and temporarily stores the logic state information of the next logic state.
  • a fourth control signal 6 ⁇ for controlling the state temporary storage and switching unit to transfer the temporarily stored logic state information to the state information storage unit, wherein the fourth control signal 60 is delayed by the third control signal ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871
  • the status is stable. If an action of opening and closing the switch is detected before the state is stabilized (corresponding to the generation of the fourth control signal 86 ⁇ 1118 ), a new second control signal and a new third control signal are generated and output: / ⁇ _, The fourth control signal 86 ⁇ 1118 is generated and output until the state is stable.
  • the generation of the control signal is implemented by a hardware circuit.
  • the power detection and control signal generating circuit includes:
  • the switch input signal detecting circuit 303 has an input terminal connected to the chip (: foot, and is input according to the detection result
  • a control signal generating circuit comprising four circuits as follows:
  • a first control signal generating circuit that detects the first output signal ⁇ _ according to the switch input signal detecting circuit 303
  • a second control signal generating circuit that generates a second control signal according to the second output signal ⁇ _ of the switch input signal detecting circuit 303 , for controlling the state temporary storage and switching unit to switch to the next logic state and temporarily storing Logic state information of a logic state;
  • a third control signal generating circuit that detects the first output signal ⁇ _ according to the switch input signal detecting circuit 303
  • a fourth control signal generating circuit that generates a fourth control signal 8601118 according to the first output signal ⁇ _ of the switch input signal detecting circuit 303 for controlling the state temporary storage and switching unit to transmit the temporarily stored logic state information Stored in the status information storage unit, wherein the fourth control signal 86 ⁇ 1118 is delayed by the third control ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871 Signal ⁇ _ at least one predetermined time interval.
  • the first control signal generating circuit, the second control signal generating circuit, the third control signal generating circuit, and the fourth control signal generating circuit are provided by the first delay circuit 305 and the second delay circuit 306. a third delay circuit 307, an AND gate 319 and a 1 flip-flop 304; wherein
  • Power-on detection circuit 302 and 0 the output end of the power-on detection circuit 301, the output end of which is connected to the first input terminal 3 of the flip-flop 304;
  • the input end of the first delay circuit 305 is connected to the first output signal ⁇ _[ terminal of the switch input signal detecting circuit 303, and the fourth control signal 86 ⁇ ! 118 is output for controlling the on/off of the first switch circuit 309. ;
  • the input terminal of the second delay circuit 306 is connected to the first output signal of the switch input signal detecting circuit 303. _[ terminal, the output is connected to the second input of the flip-flop 304
  • the input of the third delay circuit 307 is connected to a second output signal of the switch signal detection circuit 303 inputs ⁇ 1 _1? Terminal which outputs second control signal to the state storage and a switching unit.
  • the control unit includes:
  • the first switch circuit 309 is configured to connect the output of the state temporary storage and switching unit to the input end of the state information storage unit under the control of the fourth control signal 8601118 to temporarily store the state temporary storage and switching unit.
  • the logic state information is transmitted to the state information storage unit;
  • the second switch circuit 310 is configured to connect the input terminal of the state temporary storage and switching unit to the output end of the state information storage unit under the control of the first control signal to store the logic state information stored by the state information storage unit. Transfer to the status temporary storage and switching unit;
  • a third switch circuit 311 configured to connect the output end of the state information storage unit and the input end of the drive circuit under the control of the first control signal to output the stored logic state information to the drive circuit; ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871 The output end and the input end of the drive circuit to output the temporarily stored logic state information to the drive circuit.
  • the image is used as an image of the EEPROM memory unit 308' in order to avoid frequent reading and writing of the EEPROM memory cells.
  • the basic working principle is to power on for the first time (the so-called initial power-on refers to when the input switch is closed).
  • the information in the storage unit 308' is written into the internal register 313' , and all subsequent processing of the information is completed in the internal register, and the control chip 208 does not perform any action on the EEPROM storage unit, but only after powering up for a period of time. (after-steady state) information of the internal register rewritten to EEPROM memory cells, This prevents frequent read and write to the EEPROM memory cell.
  • the third switch circuit 311 is closed to input the state in the EEPROM storage unit 308' to the drive circuit 3.
  • the switch circuit 310 is closed to write the state in the EEPROM memory cell 308' to the internal register while the fourth switch circuit 312 is closed and the third switch circuit 311 is open, since the EEPROM memory cell is now in the same state as the internal register. So, such a switch does not cause a change in the logic state.
  • the state is directly output from the internal register, that is, the fourth switch circuit 312 is closed and the third switch circuit 311 is turned off.
  • the power supply of the circuit consists of (: (: power supply).
  • the purpose of this design is that when the input switch 200 is disconnected, the current loss of ⁇ DD rn is the smallest, so a smaller capacity capacitor can be kept for a long enough time.
  • the control chip 208 also specifically writes the status information in the internal register to the EEPROM storage unit after each startup and continuous operation for a period of time, to ensure the EEPROM storage ⁇ 02 019/095367 ? ⁇ 1 ⁇ 2 017/111871 will re-close the internal logic state within a few seconds after switching off to switch to the next state, otherwise the state will remain in the previous state, so it is possible to use the process. It is not necessary to change the logic state of the control chip 208 for a long period of time. If the information in the EEPROM storage unit is not regularly updated, the stored information may be easily lost.
  • control chip passes each time the input switch 200 is closed, and the chip works for a period of time and then passes one.
  • the write signal 8601118 is used to write the information in the internal register 313' into the EEPROM storage unit 308' .
  • the internal signal of the 1 ⁇ ) switch color temperature control chip 208 is as shown in FIG. 6 .
  • the waveform 400 of the voltage is the output waveform of the input switch 200 detected by the control chip 208.
  • the waveform is low, the input switch 200 is in an off state, and when the waveform appears like a square wave, the input switch 200 is present.
  • the rise is slower.
  • the input of the power-on detection circuit 301 is (: (:, for detecting 0: voltage), and when 0: the voltage reaches a preset reference voltage, a pulse signal ( ⁇ ⁇ 3 ⁇ (waveform 403 ) is output.
  • the output signal ( 1 ( 1_ ⁇ (waveform 404 ) changes from high level to low level.
  • the timing of the circuit 311 and the fourth switching circuit 312 is as shown in FIG. 6 .
  • the timing shown in Figure 6 is the associated waveform of control chip 208 upon initial power up.
  • the ⁇ signal is at the high point level, and is used to control the switch 311 to input information in the memory unit of the £1?1 ⁇ into the driving circuit, when the continuous working time exceeds a certain time.
  • 8301 ⁇ pulse signal (waveform 405) 1 ⁇ of flip-flop 304 is reset, the drive circuit converts the input signal into an output signal 314 of the internal register 313.
  • the delay time is not a certain value.
  • the above example is only an approximate range.
  • the approximate range of "about 30 milliseconds” may be 30 ⁇ 5 milliseconds, and the approximate value of "about 30 milliseconds”
  • the range can be 60 ⁇ 10 milliseconds, and the approximate range of "about, 16 milliseconds” can be 16 ⁇ 3 milliseconds. Ground.
  • the LED power supply is a dual constant current power supply
  • the CLK pin of the LED switch color temperature control chip is connected between the switch 201 and the rectifier circuit
  • the LED switch color temperature control chip is A control terminal P1 and a second control terminal P2 are connected to the power supply pins of the dual constant current power supply.
  • the LED switch color temperature control chip proposed by the present invention can be applied to the state shown in FIGS. 8 and 9 in addition to the state in which the constant current control chip can be used in the dual constant current power supply system.
  • the LH ) power supply is an isolated flyback switching power supply, that is, the LED switch color temperature control chip of the present invention can be used for In the isolated flyback switching power supply, the switches for controlling the two color LEDs of different color temperatures are used to realize the control without color temperature, wherein the flyback switching power supply represented by 16 is used.
  • LED chip color temperature control switching regulator connected to the output CLK3 was isolated flyback switching power supply, LED control terminal of the first switching regulator chip color temperature control of a second control terminal P 1 and P2, respectively The first LED group and a second group of LED connector.
  • the color temperature of the LED switching regulator control circuit of a third embodiment of the present invention embodiment, LH) power supply is a buck type switching power supply. That is, the LED switch color temperature control chip of the present invention can be used in a buck switching power supply, and is used for controlling two sets of LED switches of different color temperatures to realize control without color temperature, wherein 17 represents a buck switching power supply.
  • the CLK pin of the LED switch color temperature control chip is connected to the output end of the buck switching power supply, and the first control terminal P1 and the second control terminal P2 of the LED switch color temperature control chip are respectively associated with the first LED LED group and the second group is connected.
  • FIG. 10 is a flowchart LED color temperature control method of the switching regulator of the present invention. As shown in FIG. 10 , the method for controlling the color temperature of the LED switch of the present invention comprises the following steps:
  • Step A the power detection and control signal generating circuit detects the power signal, and determines whether the time interval of opening, closing, and opening-closing of the power input switch is greater than the first predetermined time according to the power signal, and generating according to the judgment result The corresponding control signal is output.
  • Step B the logic state control circuit outputs logic state information according to the control signal, and when it is determined that the power input switch is closed and the off-close time interval is greater than the first predetermined duration, the control chip directly enters the power input switch before being disconnected. The logical state.
  • Step C The driving circuit outputs a driving signal according to the received logic state information to turn on or off the power supply of the corresponding L ED . ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871
  • the 1 ⁇ ) switch color temperature control method includes:
  • step 0 the power detection and control signal generating circuit detects the power signal, and determines whether the time interval of opening, closing, and closing of the power input switch is greater than the first predetermined time length according to the power signal.
  • step 01 the input switch is turned off according to the power determined in the next step. Wherein, when the power switch is off input, proceeds to step eight 1, is not disconnected returns to step 80.
  • step 802 the next execution step is determined based on whether the power input switch is closed. Wherein, when the power input switch is closed, step 03 further determines eight disconnected - the closed interval is greater than a first predetermined length, it is not closed returns to step 80.
  • step 03 when it is judged OFF - closing interval is greater than a first predetermined duration, eight step 2, otherwise step 3 eight.
  • step 1 when it is determined that the power input switch is turned off, generating and outputting a second control signal
  • step ⁇ 2 when it is determined that the power input switch is closed and the off-close time interval is greater than the first predetermined time length, the first control signal is generated and output: / ⁇ ;
  • step VIII when it is determined that the power input switch is closed and the off-close time interval is less than or equal to the first pre-
  • the system logic state is stable when the information is written in the unit
  • Step 1 eight, eight step 2, step 3 after eight circuits controlled by the logic state of the step, step 62
  • the state information storage unit is controlled to output the stored logic state information to the drive circuit according to the first control signal 7 , and the control state information storage unit transfers the stored logic state information to the state temporary storage and switching unit.
  • Temporary storage
  • Temporary logic state information; and according to the fourth control signal 6 ⁇ control state temporary storage and switching unit will be ⁇ 0 2019/095367 ? ⁇ 1 ⁇ 2017/111871
  • the temporary logic status information is transferred to the status information storage unit for storage.
  • step 62 and step 63 the driver circuit outputs according to the received logic state information
  • the state when the light is turned off once, that is, after the user switches to the favorite state, the state of the light-off control chip is the last state each time, and there is no need to switch through the switch again.
  • the unit can save status information even when there is no power.
  • the control chip first inputs the information in the EEPROM storage unit into the driving circuit when the power is first turned on, thereby ensuring that the state of the control chip is the state when the light is turned off last time, and inputting the information in the EEPROM storage unit into the internal register.
  • the input signal of the drive circuit is then switched from the output of the EEPROM memory cell to the output signal of the internal register.
  • the information in the internal register is rewritten to the EEPROM memory unit every time the light is turned on.

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Abstract

La présente invention concerne une puce de commande de réglage de température de couleur de commutateur de LED, un procédé de commande de réglage de température de couleur de commutateur de LED, et une lampe d'éclairage à LED. Une puce de commande de réglage de température de couleur de commutateur de LED (208) comprend : un circuit de génération de signal de commande et de détection de source d'alimentation (320), un circuit de commande d'état logique (330), un circuit d'excitation (340) et un circuit d'alimentation électrique interne (300), le circuit de commande d'état logique (330) comprenant : une unité de stockage d'informations d'état (308), une unité de stockage et de commutation temporaire d'état (313), et une unité de commande (331). Lorsqu'il est détecté qu'un intervalle de temps entre l'arrêt et l'allumage d'un commutateur d'entrée de source d'alimentation est supérieur à une première durée prédéterminée, une puce de commande (203) entre directement dans un état logique avant que le commutateur d'entrée de source d'alimentation soit éteint. Après la commutation à un état préféré par un utilisateur, à chaque fois qu'une lampe est allumée, l'état de la puce de commande (203) est l'état avant la dernière fois que la lampe a été éteinte sans nécessiter de nouvelle commutation au moyen du commutateur. La présente invention a l'avantage d'être simple et pratique à faire fonctionner, et l'expérience utilisateur est améliorée.
PCT/CN2017/111871 2017-11-20 2017-11-20 Puce et procédé de commande de réglage de température de couleur de commutateur de led, et lampe d'éclairage à del WO2019095367A1 (fr)

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CN114679830A (zh) * 2022-04-01 2022-06-28 深圳市飞腾云科技有限公司 一种拼接灯系统
CN117914118A (zh) * 2024-03-18 2024-04-19 湘潭无线电有限责任公司 一种基于单键启停的电源管理方法及系统

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CN107148124A (zh) * 2017-07-14 2017-09-08 深圳市明微电子股份有限公司 一种开关调光调色温led驱动控制电路以及方法

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CN113692086B (zh) * 2021-08-25 2023-06-09 山东省计算中心（国家超级计算济南中心） 面向养老机构的可调节照明设备的控制方法
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