CN107995764B - Christmas lamp control circuit, method and lamp string control chip thereof - Google Patents
Christmas lamp control circuit, method and lamp string control chip thereof Download PDFInfo
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- CN107995764B CN107995764B CN201711499094.1A CN201711499094A CN107995764B CN 107995764 B CN107995764 B CN 107995764B CN 201711499094 A CN201711499094 A CN 201711499094A CN 107995764 B CN107995764 B CN 107995764B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 101150037009 pin1 gene Proteins 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A Christmas lamp control circuit, a method and a lamp string control chip thereof are integrated with a logic control unit (1), a key processing unit (5), a signal generating unit (6) for generating a lamplight control signal, an oscillating unit (2) for providing a clock signal, a voltage converting unit (3) for supplying power to each unit circuit, a zero crossing detection unit (4) and a driving unit (7). The Christmas lamp control circuit comprises a power supply circuit, a control switch, the control chip and a plurality of lamps. The method comprises the following steps: one or more lamp groups forming Christmas lamps are controlled by one or more lamp string control chips, and the lamp groups are directly connected between a power supply and corresponding output pins of the corresponding lamp string control chips. The chip greatly reduces the total element number of the lamp string control circuit, thereby improving the reliability and the production convenience of the lamp string control circuit and reducing the cost of the lamp string control circuit.
Description
Technical Field
The present invention relates to a control circuit for a christmas lamp, and more particularly, to a control chip for a string light, and to a control circuit for a christmas lamp and a control method for a christmas lamp using the same.
Background
In the consumer electronics market, the christmas lamp string is a product which is not decayed, however, the control box of the christmas lamp seen in the market still stays in the technology of thirty years ago, the control circuit is shown in fig. 1, fig. 2 is a block diagram of the control chip of the existing christmas lamp string, refer to fig. 1, a voltage-reducing resistor R2, a capacitor C2 and a voltage-stabilizing tube ZD1 form a voltage-stabilizing circuit to supply power to the control chip U1, a resistor R3 and related elements in the chip form an oscillating unit, the resistor R1 and the capacitor C1 are used for forming a zero-crossing detection circuit, the zero-crossing detection circuit is connected in an alternating current circuit, two diodes are correspondingly arranged in the control chip U1 together to form a zero-crossing detection circuit, and four thyristors T1-T4 respectively drive and control four lamps. As can be seen from fig. 1, the circuit includes a fuse F1, a high-voltage capacitor XC1, a rectifier bridge BD1, an electrolytic capacitor C2, a ceramic capacitor C1, two resistors R2 and R1, a voltage stabilizing tube ZD1, a control switch S1, four thyristors T1-T4 and a control chip U1, and the circuit has up to 14 elements, which has a complex structure, and causes defects such as inconvenient production, high cost, poor reliability and the like of the control circuit of the light string.
Disclosure of Invention
The invention aims to provide a light string control chip, which is used for simplifying a light string control circuit, reducing cost and improving product reliability and production convenience. And on the basis, a Christmas lamp control circuit and a Christmas lamp control implementation method are provided.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A light string control chip, the light string control chip comprising: a logic control unit; the key processing unit is connected between the key input pin and the logic control unit; and a signal generating unit connected with the logic control unit for generating a light control signal; the light string control chip further comprises: an oscillation unit that supplies a clock signal; the voltage conversion unit is connected with the high-voltage input pin and used for supplying power to each unit circuit; the zero crossing detection unit is connected among the ground pin, the voltage conversion unit and the logic control unit; and a driving unit connected between the output pin and the signal generating unit.
In the above-mentioned light string control chip, preferably, the light string control chip further includes an over-temperature detection unit, and the over-temperature detection unit is connected with the logic control unit.
In the above-mentioned light string control chip, preferably, the driving unit includes a MOS transistor.
In the above-described light string control chip, preferably, the voltage conversion unit includes a step-down resistor and a zener diode.
In the above-mentioned light string control chip, preferably, the zero-crossing detection unit is connected to an input end of the voltage conversion unit.
In the above-mentioned light string control chip, preferably, the light string control chip includes:
a high voltage input pin VHDD; ground margin GND;
Key input foot TG; four output pins L1, L2, L3, L4.
In the above-mentioned light string control chip, preferably, the light string control chip has 8 pins, and the 8 pins are defined as follows:
the Christmas lamp control circuit comprises a power supply circuit, a control switch, a control chip and a plurality of lamps, wherein the control chip is any one of the lamp string control chips, one ends of the lamps are connected with the output end of the power supply circuit, and the other ends of the lamps are correspondingly connected with the output pins of the control chip.
In the christmas lamp control circuit described above, preferably, the power supply circuit is constituted by a fuse element, a filter element, and a rectifying element.
A method for controlling a christmas lamp, the method for controlling and implementing the christmas lamp comprising: and controlling one or more groups of lamps forming the Christmas lamps by adopting one or more lamp string control chips, wherein the one or more groups of lamps are directly connected between a power supply and corresponding output ends of the corresponding lamp string control chips.
Compared with the prior art, the invention has at least the following beneficial effects:
Besides the logic control unit, the key processing unit and the signal generating unit, the lamp string control chip is integrated with the oscillation unit, the voltage conversion unit, the zero-crossing detection unit and the driving unit, so that the total element number of the lamp string control circuit can be greatly reduced, the reliability and the production convenience of the lamp string control circuit can be improved, and the cost of the lamp string control circuit can be reduced.
Drawings
FIG. 1 is a circuit diagram of a prior art Christmas lamp;
FIG. 2 is a block diagram of a prior art Christmas light string control chip;
FIG. 3 is a block diagram of a light string control chip according to some embodiments;
fig. 4 is a circuit diagram of some embodiments of a christmas lamp control circuit.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Referring to fig. 3, some embodiments of the light string control chip include: a logic control unit 1, an oscillation unit 2, a voltage conversion unit 3, a zero crossing detection unit 4, a key processing unit 5, a signal generation unit 6 and a driving unit 7.
The oscillating unit 2 is used for providing a clock signal. Some embodiments may integrate an external resistor in the existing circuit into the control chip.
The voltage conversion unit 3 is connected to the high voltage input pin VHDD for supplying power to each unit circuit, more specifically, a circuit for converting high voltage direct current into low voltage direct current. In some preferred embodiments, the voltage conversion unit 3 includes a buck resistor and a zener diode.
The zero crossing detection unit 4 is connected among the ground GND, the voltage conversion unit 3 and the logic control unit 1. In some preferred embodiments, the zero-crossing detection unit 4 is connected to the input end of the voltage conversion unit 1, that is, the high voltage input pin VHDD, that is, the high voltage rectified by the external rectifier bridge is used for zero-crossing detection, and in these preferred embodiments, the zero-crossing detection input pin and the high voltage input pin in the chip are the same pin, that is, only one high voltage pin, compared with the existing christmas lamp control chip.
The key processing unit 5 is connected between the key input pin TG and the logic control unit 1.
The signal generating unit 6 is connected with the logic control unit 1 and is used for generating a light control signal, namely, a signal for controlling the flashing mode of the light string, which can be realized by related software or a pulse signal generator or a combination thereof, so long as the signal with corresponding pulse width and/or frequency can be generated, and the signal generating unit can be the same as the signal generating unit in the existing Christmas light control chip.
A drive unit 7 is connected between the output pin and said signal generating unit 6. In some preferred embodiments, the driving unit 7 includes MOS transistors, for example, four MOS transistors and five MOS transistors, and the specific number of the MOS transistors may be designed according to the output pins of the chip, and the number of the MOS transistors constituting the driving unit 7 is not limited in the present invention.
Compared with the existing Christmas lamp control chip, the lamp string control chip integrates the oscillating unit 2, the voltage converting unit 3, the zero crossing detecting unit 4 and the driving unit 7 besides the logic control unit 1, the key processing unit 5 and the signal generating unit 6, so that the total element number of the lamp string control circuit can be greatly reduced, the reliability and the production convenience of the lamp string control circuit can be improved, and the cost of the lamp string control circuit can be reduced.
The lamp string control chip further comprises an over-temperature detection unit 8, and the over-temperature detection unit 8 is connected with the logic control unit 2. By means of the design, the temperature of the chip can be monitored, the output current of the driving unit 7 is reduced through the logic control unit 1 after the set temperature is reached, the temperature of the chip is reduced, the output current of the driving unit 7 returns to normal after the temperature of the chip is reduced to the set temperature, and over-temperature protection is relieved, so that the chip can be protected from being burnt, and the service life of a lamp string control circuit is effectively prolonged.
In a preferred embodiment, the light string control chip includes: a high voltage input pin VHDD; ground margin GND; key input foot TG; four output pins L1, L2, L3, L4. The light string control chip can control four lights.
In an exemplary embodiment, the light string control chip has 8 pins, and the 8 pins are defined as follows:
this exemplary embodiment model is designated as F385.
Referring to fig. 4, some embodiments of the Christmas lamp control circuit comprise a power supply circuit, a control switch S1, a control chip U1 and four lamps DS1, DS2, DS3 and DS4, wherein the control chip is the lamp string control chip, one end of each of the four lamps DS1, DS2, DS3 and DS4 is connected with an output end of the power supply circuit, and the other end of each of the four lamps DS1, DS2, DS3 and DS4 is correspondingly connected with output pins pin1, pin8, pin7 and pin6 of the control chip U1.
Further, the power supply circuit is constituted by a fuse element F1, a filter element XC1, and a rectifying element BD 1.
It can be seen that after the above light string control chip is adopted, the christmas light control circuit only needs 5 elements including the safety element F1, the filter element XC1, the rectifying element BD1, the chip U1 and the control switch S1.
Some embodiments of the Christmas lamp control method comprises: and controlling one or more groups of lamps forming the Christmas lamps by adopting one or more lamp string control chips, wherein the one or more groups of lamps are directly connected between a power supply and corresponding output ends of the corresponding lamp string control chips.
The foregoing detailed description of the invention has been provided by way of example only to assist those skilled in the art in understanding the invention and is not to be construed as limiting the scope of the invention. Various modifications, equivalent changes, etc. which are made by those skilled in the art to the above-described embodiments under the inventive concept should be included in the scope of the present invention.
Claims (7)
1. The method for realizing the control of the Christmas lamp is characterized by comprising the following steps: one or more groups of lamps forming the Christmas lamps are controlled by adopting one or more lamp string control chips, and the one or more groups of lamps are directly connected between a power supply and corresponding output pins of the corresponding lamp string control chips;
The light string control chip includes:
A logic control unit (1);
a key processing unit (5) connected between the key input pin (TG) and the logic control unit; and
A signal generating unit (6) connected with the logic control unit for generating a light control signal;
the lamp string control chip is characterized by further comprising:
An oscillation unit (2) that supplies a clock signal;
a voltage conversion unit (3) connected to the high voltage input pin (VHDD) for supplying power to each unit circuit;
the zero crossing detection unit (4) is connected among the ground pin (GND), the voltage conversion unit and the logic control unit; and
And a driving unit (7) connected between the output pins L1, L2, L3, L4 and the signal generating unit.
2. The method for implementing control of christmas lamps according to claim 1, wherein: the light string control chip further comprises an over-temperature detection unit (8), and the over-temperature detection unit is connected with the logic control unit.
3. The method for implementing control of christmas lamps according to claim 1, wherein: the driving unit (7) comprises a MOS tube.
4. The method for implementing control of christmas lamps according to claim 1, wherein: the voltage conversion unit (3) comprises a dropping resistor and a zener diode.
5. The method for implementing control of christmas lamps according to claim 1, wherein: the zero-crossing detection unit (4) is connected to the input end of the voltage conversion unit (3).
6. The method of claim 1, wherein the light string control chip comprises the following steps:
a high voltage input pin VHDD; ground margin GND;
Key input foot TG; four output pins L1, L2, L3, L4.
7. The method of claim 6, wherein the light string control chip has 8 pins, and the 8 pins are defined as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499094.1A CN107995764B (en) | 2017-12-30 | 2017-12-30 | Christmas lamp control circuit, method and lamp string control chip thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499094.1A CN107995764B (en) | 2017-12-30 | 2017-12-30 | Christmas lamp control circuit, method and lamp string control chip thereof |
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| Publication Number | Publication Date |
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| CN107995764A CN107995764A (en) | 2018-05-04 |
| CN107995764B true CN107995764B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711499094.1A Active CN107995764B (en) | 2017-12-30 | 2017-12-30 | Christmas lamp control circuit, method and lamp string control chip thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208638762U (en) * | 2017-12-30 | 2019-03-22 | 深圳市富励逻辑科技有限公司 | Lamp string controls chip and the Christmas lamp control circuit using the chip |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747616A (en) * | 2004-09-10 | 2006-03-15 | 张金荣 | Drive circuit device with Christmas light string connection |
| TWI388115B (en) * | 2009-08-13 | 2013-03-01 | Green Solution Tech Co Ltd | Power conversion drive circuit and lamp drive circuit |
| TW201352057A (en) * | 2012-06-01 | 2013-12-16 | Beyond Innovation Tech Co Ltd | Load driving apparatus relating to LED lamp and method thereof and illumination apparatus using the same |
| CN204217178U (en) * | 2014-11-13 | 2015-03-18 | 卢卫强 | A kind of LED Christmans light string |
| CN104703364B (en) * | 2015-03-31 | 2017-09-05 | 浙江三杰工艺品有限公司 | A kind of LED Christmans light strings wireless controller and its LED string |
| CN206004983U (en) * | 2016-09-29 | 2017-03-08 | 宁波鑫合瑞电子有限公司 | Christmas lamp controller |
| CN206250834U (en) * | 2016-12-23 | 2017-06-13 | 珠海市诚立信电子科技有限公司 | Christmas lamp power-supply controller of electric |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208638762U (en) * | 2017-12-30 | 2019-03-22 | 深圳市富励逻辑科技有限公司 | Lamp string controls chip and the Christmas lamp control circuit using the chip |
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