CN217770409U - LED bulb control device and LED lamp system - Google Patents
LED bulb control device and LED lamp system Download PDFInfo
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- CN217770409U CN217770409U CN202221327474.3U CN202221327474U CN217770409U CN 217770409 U CN217770409 U CN 217770409U CN 202221327474 U CN202221327474 U CN 202221327474U CN 217770409 U CN217770409 U CN 217770409U
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Abstract
The utility model discloses a LED bulb controlling means and LED lamp system, LED bulb controlling means includes rectifier unit, DC-DC unit, signal sampling unit, the control unit, MCU power supply unit and LED subassembly, wherein, rectifier unit is connected with the external power supply line and is used for carrying out the rectification output to the supply current of input; the DC-DC unit is connected with the rectifying unit; the signal sampling unit is connected with the rectifying unit or an external power supply circuit and is used for counting the frequency and the period of the periodic change of alternating current or control signal pulse so as to provide a synchronous signal and collect a control signal input by an external controller; the control unit is connected with the signal sampling unit and receives the synchronous signal and/or the control signal output by the signal sampling unit; the MCU power supply unit is respectively connected with the DC-DC unit and the control unit and is used for supplying power to the control unit; the LED assembly comprises more than one LED unit, and the LED assembly is respectively connected with the DC-DC unit and the control unit.
Description
Technical Field
The utility model relates to a lamp pearl technical field of lamps and lanterns controlling means and lamps and lanterns especially relates to a LED bulb controlling means and LED lamp system.
Background
As an important lighting tool, bulbs are widely used for indoor decoration, public atmosphere construction and the like, however, since a decorative bulb assembly is mostly formed by connecting a plurality of LED bulbs in series, in parallel or in series and in parallel, LED bulbs have the characteristics of long service life, no pollution, high lighting effect and the like, and are widely used in various decorative bulb assemblies, particularly, the LED bulbs are often provided with control chips, so that the on-off control of the LED bulbs is more flexible and diverse, and in order to enable the LED bulbs to be synchronously controlled or asynchronously controlled according to a certain rule to achieve an ideal atmosphere rendering effect, usually, a designer of a lamp can perform light control on a matched bulb control system according to corresponding functions and required effects, such as bright-dark, horse race lamp effects and the like.
In the traditional lamp control scheme, the control of the matched control units is mostly carried out according to the number of the LED lamp posts, and because the scheme that a plurality of control units control a plurality of LED light-emitting units has response difference due to the synchronization of the control units, after the lamp is used for a period of time, the timing of each control unit has larger deviation, and the light emitted by the LED bulb light-emitting units also appears to lose regularity; although bulbs which adopt one control chip to control a plurality of LED lamps to be turned on and turned off also appear in the market, once the bulbs lose user access control, the LED lamps can generate disordered light emission, and automatic regular adjustment cannot be realized.
Therefore, how to improve the convenience and stability of controlling the LED bulbs on the LED lamp set is a research topic with practical significance and is also a technology urgently needed in the field at present.
Disclosure of Invention
In view of this, the present invention provides an LED bulb control device and an LED lamp system with reliable implementation, high synchronization efficiency, stable use, and flexible and humanized operation.
In order to realize the technical purpose, the utility model adopts the technical scheme that:
an LED bulb control device, comprising:
the rectifying unit is connected with an external power supply circuit and is used for rectifying and outputting the input power supply current;
a DC-DC unit connected with the rectifying unit;
the signal sampling unit is connected with the rectifying unit or an external power supply circuit and is used for counting the frequency and the period of the periodic change of alternating current or control signal pulse so as to provide a synchronous signal and collect a control signal input by an external controller;
the control unit is connected with the signal sampling unit and receives the synchronous signal and/or the control signal output by the signal sampling unit;
the MCU power supply unit is respectively connected with the DC-DC unit and the control unit and is used for supplying power to the control unit;
and the LED assembly comprises one or more LED units, and the LED assembly is respectively connected with the DC-DC unit and the control unit and is controlled by the control unit.
As a possible implementation manner, further, a protective tube F1 and a current-limiting resistor R1 are further arranged on a lead of the rectifying unit connected to an external power supply line; the rectification unit is rectifier bridge DB1, and its pin 1 and pin 3 are used for inserting the zero live wire of outside power supply line respectively.
The fuse F1 is arranged on a lead wire which is connected to an external power supply circuit through a pin 1 of the rectifier bridge DB 1; and the current-limiting resistor R1 is arranged on a lead wire which is connected to an external power supply line through a pin 3 of the rectifier bridge DB 1.
In addition, pin 4 of the rectifier bridge DB1 is grounded, and pin 2 of the rectifier bridge DB1 is connected to the DC-DC unit and the signal sampling unit, respectively.
As a preferred optional embodiment, preferably, the DC-DC unit in this embodiment includes a chip U1, a resistor R5, a capacitor C2, an inductor L1, a diode D2, and an electrolytic capacitor C3; pin 1VDD of chip U1 is connected to one end of capacitor C2 and the negative electrode of diode D2, pin 2DRAIN of chip U1 is connected to pin 2 of rectifier bridge DB1, pin 3CS of chip U1 is connected to one end of resistor R5, the other end of resistor R5 is connected to the other end of capacitor C2, one end of inductor L1 and the negative electrode of diode D1 respectively, the positive electrode of diode D1 and the negative electrode of electrolytic capacitor C3 are both grounded, the positive electrode of diode D2 and the positive electrode of electrolytic capacitor C3 are both connected to the other end of inductor L1, and the other end of inductor L1 is further connected to MCU power supply unit and LED module.
As a preferred optional embodiment, preferably, the circuit, in which the DC-DC unit is connected to the MCU power supply unit and the LED module, is further provided with a diode D4 and a resistor R4 in sequence; the anode of the diode D4 is connected with the DC-DC unit, the cathode of the diode D4 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with the MCU power supply unit and the LED assembly respectively.
As a preferred optional embodiment, preferably, the control unit in this embodiment includes a control chip U2; the MCU power supply unit comprises a voltage stabilizing diode ZD1 and a capacitor C4.
The pin VDD of the control chip U2, the cathode of the voltage stabilizing diode ZD1 and one end of the capacitor C4 are connected to the other end of the resistor R4; the pin GND of the control chip U2, the anode of the voltage stabilizing diode ZD1 and the other end of the capacitor C4 are all grounded, and the other end of the resistor R4 is also grounded.
In addition, a pin SYN of the control chip U2 is connected with a signal sampling unit; the control chip U2 is also provided with an output pin and is connected with the LED assembly through the output pin.
As a preferred selection embodiment, preferably, the signal sampling unit in this scheme includes a resistor R2, a resistor R3, and a capacitor C3, one end of the resistor R3 is connected to the pin 2 of the rectifier DB1, the other end of the resistor R3, one end of the resistor R2, and one end of the capacitor C3 are all connected to the pin SYN of the control chip U2, and the other end of the resistor R2 and the other end of the capacitor C3 are all grounded.
As a preferred optional embodiment, preferably, the LED assembly in this embodiment includes a plurality of LED units, one end of each of the plurality of LED units is connected to the other end of the resistor R4, and the other end of each of the plurality of LED units is connected to the control chip U2.
In order to facilitate synchronous control, the number of output pins of the control chip U2 corresponds to the number of the LED units one by one and is correspondingly connected with the LED units.
In the implementation scheme of color matching of the LED unit, the LED unit is a single-color LED unit or a mixed-color LED unit, the mixed LED unit is an LED unit with RGB color or an LED unit with RGBW color, and the LED unit comprises more than one LED sub-unit; the LED units of the LED assembly are arranged in series, parallel or series-parallel.
As a preferred optional embodiment, preferably, a diode D3 is further disposed between the DC-DC unit and the rectifying unit in this scheme, an anode of the diode D3 is connected to pin 2 of a rectifying bridge DB1 of the rectifying unit, and a cathode of the diode D3 is connected to pin 2DRAIN of a chip U1 of the DC-DC unit.
As a preferred alternative, the LED assembly according to this aspect preferably further includes a resistor R6, one end of the resistor R6 is connected to one end of each of the plurality of LED units, and the other end of the resistor R6 is connected to the other end of the resistor R4.
As a preferred alternative, the model of the chip U2 in the scheme is FT60F021-RB.
Adopt foretell technical scheme, compared with the prior art, the utility model, its beneficial effect who has is: the device has the advantages that the device is ingeniously connected with the rectifying unit through the DC-DC unit, then the DC-DC unit is connected with the MCU power supply unit and the LED assembly, the DC-DC unit mainly has the function of providing load power supply for the MCU power supply unit and the LED assembly, under the intervention of the DC-DC unit, the device has good wide voltage adaptability, can allow alternating current input to provide constant output voltage under the condition of large-range change, and provide a more stable power supply environment for subsequent units and assemblies; meanwhile, the diodes D3 and D4 are skillfully added in the scheme to prevent the crosstalk between an external control signal and the power supply of an external power supply line from causing signal waveform distortion, so that the control stability and accuracy of the LED lamp bank are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram showing the connection relationship between the units of the device of the present invention in one embodiment;
FIG. 2 is a schematic circuit diagram of the apparatus of the present invention;
fig. 3 is a schematic connection diagram of the units of the device according to another embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only for illustrating the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only some but not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Example 1
As shown in fig. 1, the embodiment of the present invention provides an LED bulb control device, which includes:
the rectifying unit 1 is connected with an external power supply circuit and is used for rectifying and outputting input power supply current;
a DC-DC unit 2 connected to the rectifying unit 1;
the signal sampling unit 3 is connected with the rectifying unit 1 and is used for counting the number and the period of the periodic change of alternating current or control signal pulse so as to provide a synchronous signal and acquire a control signal input by an external controller;
the control unit 4 is connected with the signal sampling unit and receives the synchronous signal and/or the control signal output by the signal sampling unit;
the MCU power supply unit 5 is respectively connected with the DC-DC unit 2 and the control unit 4 and is used for supplying power to the control unit 4;
and the LED assembly 6 comprises one or more LED units, and the LED assembly 6 is respectively connected with the DC-DC unit 2 and the control unit 4 and is controlled by the control unit 4.
On the basis of fig. 1, with further emphasis on fig. 2, in the present embodiment, a fuse F1 and a current limiting resistor R1 are further disposed on a lead of the rectifying unit 1 connected to an external power supply line; the rectification unit is rectifier bridge DB1, and its pin 1 and pin 3 are used for inserting the zero live wire of external power supply line respectively.
The fuse F1 is arranged on a lead wire which is connected to an external power supply circuit through a pin 1 of the rectifier bridge DB 1; and the current-limiting resistor R1 is arranged on a lead wire which is connected to an external power supply line at a pin 3 of the rectifier bridge DB 1.
In addition, pin 4 of the rectifier bridge DB1 is grounded, and pin 2 of the rectifier bridge DB1 is connected to the DC-DC unit and the signal sampling unit, respectively.
As a preferred embodiment of the DC-DC unit 2, preferably, the DC-DC unit 2 in this embodiment includes a chip U1, a resistor R5, a capacitor C2, an inductor L1, a diode D2, and an electrolytic capacitor C3; the pin 1VDD of the chip U1 is connected with one end of the capacitor C2 and the negative electrode of the diode D2, the pin 2DRAIN of the chip U1 is connected with the pin 2 of the rectifier bridge DB1, the pin 3CS of the chip U1 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with the other end of the capacitor C2, one end of the inductor L1 and the negative electrode of the diode D1 respectively, the positive electrode of the diode D1 and the negative electrode of the electrolytic capacitor C3 are grounded, the positive electrode of the diode D2 and the positive electrode of the electrolytic capacitor C3 are connected with the other end of the inductor L1 respectively, and the other end of the inductor L1 is further connected with the MCU power supply unit and the LED assembly.
In the scheme, the DC-DC unit 2 mainly plays a role in providing load power supply for the MCU power supply unit 5 and the LED assembly 6, and under the intervention of the DC-DC unit 2, the device has good wide voltage adaptability, can allow alternating current input to provide constant output voltage under the condition of large-range change, and provides a more stable power supply environment for subsequent units and assemblies.
In addition, in order to prevent signal back-fleeing, in the scheme, a diode D4 and a resistor R4 are sequentially arranged on a line connecting the DC-DC unit 2 to the MCU power supply unit 5 and the LED assembly 6; the anode of the diode D4 is connected with the DC-DC unit, the cathode of the diode D4 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with the MCU power supply unit and the LED assembly respectively. In addition, as a preferred optional embodiment, preferably, a diode D3 is further disposed between the DC-DC unit and the rectifying unit in this scheme, an anode of the diode D3 is connected to pin 2 of a rectifying bridge DB1 of the rectifying unit, and a cathode of the diode D3 is connected to pin 2DRAIN of a chip U1 of the DC-DC unit; however, the present solution is not limited to this, in other possible embodiments of the present solution, the diode D3 may also be omitted, in addition, the signal anti-fleeing effect of the diode D3 and the diode D4 is realized based on the unidirectional conductive characteristic of the diode, and the specific mechanism is the prior art, which is not described again.
As a preferred selection implementation of the control unit 4 and the MCU power supply unit 5, preferably, the control unit 4 in this scheme includes a control chip U2; the MCU power supply unit 5 comprises a voltage stabilizing diode ZD1 and a capacitor C4.
The pin VDD of the control chip U2, the cathode of the voltage stabilizing diode ZD1 and one end of the capacitor C4 are connected to the other end of the resistor R4; and a pin GND of the control chip U2, the anode of the voltage stabilizing diode ZD1 and the other end of the capacitor C4 are all grounded, and the other end of the resistor R4 is also grounded.
In addition, a pin SYN of the control chip U2 is connected with a signal sampling unit; the control chip U2 is also provided with an output pin and is connected with the LED assembly through the output pin.
As a preferred selection implementation manner of the signal sampling unit 3, preferably, in this scheme, the signal sampling unit 3 includes a resistor R2, a resistor R3, and a capacitor C3, one end of the resistor R3 is connected to the pin 2 of the rectifier DB1, the other end of the resistor R3, one end of the resistor R2, and one end of the capacitor C3 are all connected to the pin SYN of the control chip U2, and the other end of the resistor R2 and the other end of the capacitor C3 are all grounded.
As for the LED assembly 6, as a possible alternative embodiment of the LED assembly 6, the LED assembly 6 according to this scheme may include a plurality of LED units, wherein one end of each of the plurality of LED units is connected to the other end of the resistor R4; in addition, the other ends of the plurality of LED units are connected to the control chip U1, and in order to facilitate synchronous control of the LED assemblies, in this embodiment, the number of output pins of the control chip U2 corresponds to and is connected to the plurality of LED units one to one, in this embodiment, fig. 2 shows 4 LED units, the 4 LED units are composed of a plurality of LED sub-units (i.e., LED bulbs) connected in series, in order to facilitate control of the 4 LED units, the output pins of the control chip U2 of this embodiment include a pin OUT1, a pin OUT2, a pin OUT3 and a pin OUT4, and the pin OUT1, the pin OUT2, the pin OUT3 and the pin OUT4 are connected to the other ends of the 4 LED units, respectively.
In the implementation scheme of color matching of the LED unit, the LED unit is a single-color LED unit or a mixed-color LED unit, the mixed LED unit is an RGB-color LED unit or an RGBW-color LED unit, and the LED unit comprises more than one LED sub-unit; the plurality of LED units of the LED assembly 6 are arranged in series, parallel or series-parallel.
Furthermore, according to the present embodiment, the LED assembly 6 may further include a resistor R6, one end of the resistor R6 is connected to one end of each of the plurality of LED units, and the other end of the resistor R6 is connected to the other end of the resistor R4.
In the model selection of the chip U1 and the chip U2, the model of the U2 is FT60F021-RB.
Because the DC-DC unit 2 in the device of the scheme can enable the control device to have good wide voltage adaptability, the DC-DC unit can allow alternating current input to provide constant output voltage under the condition of large-range change, and provide more stable power supply environment for subsequent units and assemblies, and compared with the traditional scheme, the LED assembly 6 of the scheme can adopt more LED units to be connected in parallel; in the traditional scheme, after the lengths of the LED units and the LED subunits (namely the LED bulbs) of the LED units reach a certain value, the voltage drop formed on a line by the LED bulbs behind the LED bulbs is increased under the condition that the number of the LED bulbs connected in parallel is increased, so that the effective control and control response efficiency of the LED bulb control device on the LED assembly is influenced.
Based on the above, the operating principle of the LED bulb control device in the embodiment is as follows:
according to the scheme, the pin SYN of the control chip U2 is used for detecting the voltage division signal values from the resistor R3 and the resistor R2, and judgment of control signal input is achieved.
When a user does not access an external controller, the signal sampling unit 3 counts the number and period of the periodic variation of the alternating current to provide a synchronous signal to a pin SYN of the control chip U2, and the pin SYN of the control chip U2 automatically detects and judges the periodic frequency of the alternating current input signal so as to realize the synchronous variation control of the LED units on the same line;
when a user accesses the external controller, the signal sampling unit 3 collects a control signal to provide the control signal for the pin SYN of the control chip U2, the pin SYN of the control chip U2 can automatically detect and identify the function of the control signal and can automatically identify the output signal of the external controller, so that the LED units share the same control unit 4 with the LED units to realize the uniform and synchronous control of the color change of the LED units.
Example 2
As shown in fig. 3, the present embodiment is substantially the same as embodiment 1, except that in the present embodiment, the signal sampling unit is directly connected to the external power supply line and is used for counting the number and period of the periodic variation of the alternating current or control signal pulse to provide the synchronization signal and collect the control signal input by the external controller.
The remaining connection relationships and the general control mechanism of this embodiment are substantially the same as those of embodiment 1, and are not described again.
The above only is the partial embodiment of the utility model discloses a not therefore restriction the utility model discloses a protection scope, all utilize the utility model discloses equivalent device or equivalent flow transform that the content of description and drawing was done, or direct or indirect application in other relevant technical field, all the same reason is included in the patent protection scope of the utility model.
Claims (10)
1. An LED bulb control device, characterized in that it includes:
the rectifying unit is connected with an external power supply circuit and is used for rectifying and outputting the input power supply current;
a DC-DC unit connected with the rectifying unit;
the signal sampling unit is connected with the rectifying unit or an external power supply circuit and is used for counting the frequency and the period of the periodic change of alternating current or control signal pulse so as to provide a synchronous signal and collect a control signal input by an external controller;
the control unit is connected with the signal sampling unit and receives the synchronous signal and/or the control signal output by the signal sampling unit;
the MCU power supply unit is respectively connected with the DC-DC unit and the control unit and is used for supplying power to the control unit;
and the LED assembly comprises one or more LED units, and the LED assembly is respectively connected with the DC-DC unit and the control unit and is controlled by the control unit.
2. The LED bulb control device according to claim 1, wherein a fuse F1 and a current limiting resistor R1 are further arranged on a lead of the rectifying unit connected to an external power supply line; the rectifying unit is a rectifying bridge DB1, and a pin 1 and a pin 3 of the rectifying unit are respectively used for being connected with a zero line and a live line of an external power supply circuit;
the fuse F1 is arranged on a lead wire which is connected to an external power supply circuit through a pin 1 of the rectifier bridge DB 1;
the current-limiting resistor R1 is arranged on a lead wire which is connected to an external power supply circuit through a pin 3 of the rectifier bridge DB 1;
in addition, pin 4 of the rectifier bridge DB1 is grounded, and pin 2 of the rectifier bridge DB1 is connected to the DC-DC unit and the signal sampling unit, respectively.
3. The LED bulb control device according to claim 2, wherein the DC-DC unit comprises a chip U1, a resistor R5, a capacitor C2, an inductor L1, a diode D2 and an electrolytic capacitor C3;
pin 1VDD of chip U1 is connected to one end of capacitor C2 and the negative electrode of diode D2, pin 2DRAIN of chip U1 is connected to pin 2 of rectifier bridge DB1, pin 3CS of chip U1 is connected to one end of resistor R5, the other end of resistor R5 is connected to the other end of capacitor C2, one end of inductor L1 and the negative electrode of diode D1 respectively, the positive electrode of diode D1 and the negative electrode of electrolytic capacitor C3 are both grounded, the positive electrode of diode D2 and the positive electrode of electrolytic capacitor C3 are both connected to the other end of inductor L1, and the other end of inductor L1 is further connected to MCU power supply unit and LED module.
4. The LED bulb control device as claimed in one of claims 1 to 3, wherein a diode D4 and a resistor R4 are further sequentially arranged on a line of the DC-DC unit connected to the MCU power supply unit and the LED component;
the anode of the diode D4 is connected with the DC-DC unit, the cathode of the diode D4 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with the MCU power supply unit and the LED assembly respectively.
5. The LED bulb control device according to claim 4, wherein the control unit includes a control chip U2;
the MCU power supply unit comprises a voltage stabilizing diode ZD1 and a capacitor C4,
the pin VDD of the control chip U2, the cathode of the voltage stabilizing diode ZD1 and one end of the capacitor C4 are connected to the other end of the resistor R4; the pin GND of the control chip U2, the anode of the voltage stabilizing diode ZD1 and the other end of the capacitor C4 are all grounded, and the other end of the resistor R4 is also grounded;
in addition, a pin SYN of the control chip U2 is connected with a signal sampling unit; the control chip U2 is also provided with an output pin and is connected with the LED component through the output pin;
the signal sampling unit includes resistance R2, resistance R3 and electric capacity C3, resistance R3's one end is connected with rectifier DB 1's pin 2, resistance R3's the other end, resistance R2's one end, electric capacity C3's one end all are connected to control chip U2's pin SYN, resistance R2's the other end and electric capacity C3's the other end all ground connection.
6. The LED bulb control device according to claim 5, wherein the LED assembly comprises a plurality of LED units, one ends of the LED units are connected to the other end of the resistor R4, and the other ends of the LED units are connected to the control chip U2;
the number of output pins of the control chip U2 corresponds to the number of the LED units one by one and is correspondingly connected with the LED units.
7. The LED bulb control device according to claim 6, wherein a diode D3 is further arranged between the DC-DC unit and the rectifying unit, an anode of the diode D3 is connected with a pin 2 of a rectifying bridge DB1 of the rectifying unit, and a cathode of the diode D3 is connected with a pin 2DRAIN of a chip U1 of the DC-DC unit.
8. The LED bulb control device according to claim 6, wherein the LED assembly further comprises a resistor R6, one end of the resistor R6 is connected to one end of each of the plurality of LED units, and the other end of the resistor R6 is connected to the other end of the resistor R4.
9. The LED bulb control device according to claim 6, wherein the LED units are single-color LED units or mixed-color LED units, the mixed LED units are RGB-color LED units or RGBW-color LED units, and the LED units comprise more than one LED sub-units;
the LED units of the LED assembly are arranged in series, parallel or series-parallel.
10. LED lamp system, characterized in that it comprises an LED bulb control device as claimed in one of the claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221327474.3U CN217770409U (en) | 2022-05-30 | 2022-05-30 | LED bulb control device and LED lamp system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221327474.3U CN217770409U (en) | 2022-05-30 | 2022-05-30 | LED bulb control device and LED lamp system |
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| Publication Number | Publication Date |
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| CN217770409U true CN217770409U (en) | 2022-11-08 |
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| CN202221327474.3U Active CN217770409U (en) | 2022-05-30 | 2022-05-30 | LED bulb control device and LED lamp system |
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| CN (1) | CN217770409U (en) |
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- 2022-05-30 CN CN202221327474.3U patent/CN217770409U/en active Active
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