CN215991287U - Flashing light control device - Google Patents
Flashing light control device Download PDFInfo
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- CN215991287U CN215991287U CN202120270339.9U CN202120270339U CN215991287U CN 215991287 U CN215991287 U CN 215991287U CN 202120270339 U CN202120270339 U CN 202120270339U CN 215991287 U CN215991287 U CN 215991287U
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Abstract
The utility model provides a flashing light control device, comprising: the power supply circuit comprises a signal connection circuit and at least one power supply circuit; the signal connection circuit comprises a DIN pin of the first chip electrically connected to the controller, and a DOUT pin electrically connected to the DIN pin of the next-level chip or vacant; the power supply circuit comprises a VDD pin of the first chip, a GND pin and a power supply end, wherein the VDD pin is electrically connected to the power supply end; the OUTR pin and/or the OUTG pin and/or the OUTB pin of the first chip are electrically connected with the light-emitting diode. The design of this scheme improvement chip internal circuit increases power management circuit in the chip is inside, and signal transmission treatment circuit realizes can connecting in parallel wantonly, establishing ties earlier parallelly connected afterwards or establishing ties after parallelly connected earlier scheme such as establishing ties according to supply voltage, realizes that high low voltage power supply selects at will, and lamp supply voltage can not appear differently because of transmission distance, the luminance of lamp, the color uniformity is better.
Description
Technical Field
The utility model relates to the technical field of light emitting diode control, in particular to a flashing light control device.
Background
The lamp strip is named by assembling light emitting diodes on a strip-shaped FPC (flexible printed circuit board) or PCB (printed circuit board) hard board because the product shape is like a strip. Because the service life is long (the normal service life is generally 8-10 ten thousand hours), the energy is saved, the environment is protected, and the method gradually exposes the corners in various decoration industries.
Can let the lamp area shine with peculiar frequency through connection control equipment to and use when through multiple colour, make lamp area decorative effect better.
At present, a lamp control chip can only be used in a parallel power supply scheme, the transmission loss of a circuit is large, the voltage of the position of the circuit close to a power supply is high, the voltage of the position far away from the power supply is low, so that the brightness of the lamp is inconsistent, the voltage difference of different lamps is reduced by multi-point power supply for a long time of the circuit, and the power supply scheme is complex and inconvenient in wiring.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been developed to provide a flash control device that overcomes, or at least partially solves, the above-mentioned problems.
In order to solve the above problems, the present invention discloses a flashing light control device, comprising: the power supply circuit comprises a signal connection circuit and a power supply circuit for providing at least one power supply connection mode;
the signal connection circuit comprises a DIN pin of the first chip electrically connected to the controller, and a DOUT pin electrically connected to the DIN pin of the next-level chip or vacant;
the power supply circuit comprises a power supply circuit for providing a basic power supply connection mode, and specifically comprises a VDD pin of the first chip, wherein the VDD pin is electrically connected to a power supply end; the GND pin of the first chip is grounded;
the OUTR pin and/or the OUTG pin and/or the OUTB pin of the first chip are electrically connected to the cathode of the first light-emitting diode; the anode of the first light emitting diode is electrically connected to the VDD pin of the first chip.
Further, the first light emitting diode comprises at least 1 light emitting diode.
Further, the light emitting diode comprises one or a combination of two or more of white light, red light, green light, blue light, yellow light and purple light.
Furthermore, the power supply circuit also comprises a power supply circuit for providing the 1 st power supply connection mode;
the power supply circuit for providing the 1 st power supply connection mode comprises VDD pins and GND pins of N first chips, wherein the VDD pins are connected with power supply ends in parallel, and the GND pins are grounded.
Furthermore, the power supply circuit also comprises a power supply circuit for providing a 2 nd power supply connection mode;
the power supply circuit for providing the 2 nd power supply connection mode comprises N power supply circuits which are connected in series and provide the basic power supply connection mode, specifically, a VDD pin of a first chip is electrically connected to the power supply end, a GND pin end of the first chip is electrically connected to a VDD pin of a second chip, the VDD pin of the Nth chip is connected to a higher level GND pin sequentially, and the GND pin of the Nth chip is grounded.
Furthermore, the power supply circuit also comprises a power supply circuit for providing a No. 3 power supply connection mode;
the power supply circuit for providing the 3 rd power supply connection mode is formed by connecting M power supply circuits for providing the basic power supply connection mode in parallel to form a first group of circuits, and then connecting N first group of circuits in series, specifically, VDD pins of M first chips are connected to the power supply end in parallel, and GND pins of the first chips are connected in parallel to form a first group of circuits, and the N first group of circuits are connected in series.
Furthermore, the power supply circuit also comprises a power supply circuit providing a 4 th power supply connection mode;
the power supply circuit providing the 4 th power supply connection mode is formed by connecting M power supply circuits providing the 2 nd power supply connection mode in parallel.
Furthermore, a current-limiting resistor is connected between the power supply end and the VDD pin of the first chip.
The utility model has the following advantages:
the design of this scheme improvement chip internal circuit increases power management circuit in the chip is inside, and signal transmission treatment circuit realizes can connecting in parallel wantonly, establishing ties earlier parallelly connected afterwards or establishing ties after parallelly connected earlier scheme such as establishing ties according to supply voltage, realizes that high low voltage power supply selects at will, and lamp supply voltage can not appear differently because of transmission distance, the luminance of lamp, the color uniformity is better.
Drawings
FIG. 1 is a schematic diagram of a basic circuit configuration of an embodiment of a flashlight control device of the present invention;
FIG. 2 is a schematic diagram of a parallel circuit configuration of an embodiment of the flashlight control device of the present invention;
FIG. 3 is a schematic diagram of a series circuit configuration of an embodiment of the flashlight control device of the present invention;
FIG. 4 is a schematic diagram of a parallel-then-series circuit configuration of an embodiment of a flashlight control device of the present invention;
fig. 5 is a schematic diagram of a series-parallel circuit structure of an embodiment of the flashlight control device of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
One of the core ideas of the utility model is that the scheme improves the circuit design in the chip, adds a power management circuit and a signal transmission processing circuit in the chip, realizes the schemes of arbitrary parallel connection, series connection, first series connection and then parallel connection or first parallel connection and then series connection according to the power supply voltage, realizes the arbitrary selection of high and low voltage power supply, and ensures that the lamp power supply voltage does not have different transmission distances, and the brightness and the color consistency of the lamp are better.
Referring to fig. 1-5, an embodiment of a flash control apparatus of the present invention is shown, which may specifically include: the power supply circuit comprises a signal connection circuit and a power supply circuit for providing at least one power supply connection mode; the signal connection circuit comprises a DIN pin of the first chip electrically connected to the controller, and a DOUT pin electrically connected to the DIN pin of the next-level chip or vacant; the power supply circuit comprises a power supply circuit for providing a basic power supply connection mode, and specifically comprises a VDD pin and a GND pin of the first chip, wherein the VDD pin is electrically connected to a power supply end; the GND pin of the first chip is grounded; the OUTR pin and/or the OUTG pin and/or the OUTB pin of the first chip are electrically connected to the cathode of the first light-emitting diode D1; the anode of the first light emitting diode D1 is electrically connected to the VDD pin of the first chip, for example, the power supply voltage of the power supply terminal is 4.5V.
Further, the first led D1 at least includes 1 led D1, and may also include 2 leds D1 and D2 or 3 leds D1, D2 and D3.
Further, the light emitting diode D1 includes one or a combination of two or three of white light, red light, green light, blue light, yellow light, and violet light, for example, preferably a red light emitting diode D1, a green light emitting diode D2, and a blue light emitting diode D3;
the chip adopts an automatic shaping forwarding technology, so that the cascade number of the chip is not limited by signal transmission, and only the requirement of screen refreshing speed is limited.
In another embodiment, as shown in fig. 2, the power supply circuit further includes a power supply circuit providing a 1 st power supply connection mode; the power supply circuit for providing the 1 st power supply connection mode comprises N first chips, wherein a VDD pin of each first chip is connected with a power supply end in parallel, and a GND pin of each first chip is grounded, namely the power supply circuits for providing the basic power supply connection mode are connected in parallel; the control signal of the controller is connected to and maintained in series, for example, three chips are connected in series as shown in fig. 3, that is, the control signal output from the controller is connected to the DIN of the first chip, the shaped control signal is output from the DOUT pin of the first chip to the DIN pin of the second chip after the control signal is shaped by the first chip, the shaped control signal is output from the DOUT pin of the second chip to the DIN pin of the third chip after the control signal is shaped again by the second chip, and thus, the control signal is output from the DOUT pin of the second chip to the DIN pin of the third chip until the DIN pin of the nth chip is connected, the DOUT pin of the nth chip is vacant, that is, after the control signal controller outputs the control signal, the control signal is shaped and output to the current chip until the last chip, for example, a flash lamp composed of 1024 chips, and the controller outputs the 1 st chip until the 1024 chips connected with the control signal.
In another embodiment, as shown in fig. 3, the power supply circuit further includes a power supply circuit providing a 2 nd power supply connection; the power supply circuit for providing the 2 nd power supply connection mode comprises N power supply circuits which are connected in series and provide the basic power supply connection mode, specifically, a VDD pin of a first chip is electrically connected to the power supply end, a GND pin end of the first chip is electrically connected to a VDD pin of a second chip, the VDD pin of the Nth chip is connected to a higher level GND pin sequentially, and the GND pin of the Nth chip is grounded.
A current limiting resistor R0 is connected to the VDD pin of the first chip at the power supply terminal, wherein the resistance of the resistor R0 is determined according to the power supply and the number of chips connected in series, for example, the power supply terminal is supplied with power at 24V, and 10 groups of flashing lights (including chips and light emitting diodes) connected in series can be selected from a current limiting resistor of 10 Ω.
In another embodiment, as shown in fig. 4, the power supply circuit further includes a power supply circuit providing a 3 rd power supply connection; the power supply circuit providing the 3 rd power supply connection mode is formed by connecting M power supply circuits providing the basic power supply connection mode in parallel to form a first group of circuits, and then connecting N first group of circuits in series, specifically, VDD pins of M first chips are connected to the power supply end in parallel, and GND pins of the first chips are connected in parallel to form a first group of circuits, the N first group of circuits are connected in series, for example, as shown in fig. 5, VDD pins of the 3 chips of the first group are connected to one end of a current limiting resistor R0 in parallel, the other end of R0 is connected to the power supply end, GND pins of the 3 chips of the first group are connected to VDD pins of the 3 chips of the second group in parallel, VDD pins of the 3 chips of the third group are connected to GND pins of the 3 chips of the second group, and GND pins of the 3 chips of the third group are grounded; the present embodiment is not limited to the connection manner of 3 and three groups.
In another embodiment, as shown in fig. 5, the power supply circuit further includes a power supply circuit providing a 4 th power supply connection; the power supply circuit providing the 4 th power supply connection mode is formed by connecting M power supply circuits providing the 2 nd power supply connection mode in parallel.
In another embodiment, a current limiting resistor R0 is further connected between the power supply terminal and the VDD pin of the first chip, and the current limiting resistor R0 may also be a safety resistor, so that when a chip in the circuit is damaged, it is not prevented that a loop current is too large due to too high local voltage, which may damage the entire circuit.
The chip adopts a single-wire communication mode and adopts a return-to-1 code mode to send signals. After the power-on reset of the chip, the chip receives data transmitted by the DIN pin end, and after the chip receives enough 24 bits, the DOUT pin end starts to forward the data to provide input data for the next chip. Before forwarding, the DOUT pin is pulled low. At the moment, the chip does not receive new data, and the three PWM output pins of the chip OUTR, OUTG and OUTB send corresponding signals with different duty ratios according to the received 24-bit data, wherein the frequency of the signals is 1 kHz. If the input signal of the DIN pin terminal is a RESET signal, the chip displays the received data through the light-emitting diode, the chip receives new data again after the signal is ended, the data is forwarded through the DOUT pin terminal after the beginning 24-bit data is received, the original output of the OUTR, OUTG and OUTB pins is kept unchanged before the chip does not receive the RESET code, and after the low-level RESET code above 80 mu s is received, the chip outputs the pulse width of the 24-bit PWM data received just now to the OUTR, OUTG and OUTB pins. The 24-bit data is transmitted sequentially from the upper bits to the lower bits, for example, from the data bits of R7-R0, G7-G0, B7-B0 in the order of RGB. The chip adopts an automatic shaping forwarding technology, so that the cascade number of the chip is not limited by signal transmission, and only the requirement of screen refreshing speed is limited. For example, a 1024 cascade is designed, the screen brushing time of the cascade is 1024 × 0.4 × 2 ═ 0.8192ms (the data delay time of the chip is 0.4 μ s), and the phenomenon of flicker is avoided.
The utility model has the beneficial effects that the differential signal is transmitted by the return-to-1 code, so that the signal has stronger anti-interference capability.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The flash lamp control device provided by the utility model is described in detail, and the principle and the implementation mode of the utility model are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A flashing light control device, comprising: the power supply circuit comprises a signal connection circuit and a power supply circuit for providing at least one power supply connection mode;
the signal connection circuit comprises a DIN pin of the first chip electrically connected to the controller, and a DOUT pin electrically connected to the DIN pin of the next-level chip or vacant;
the power supply circuit comprises a power supply circuit for providing a basic power supply connection mode, and specifically comprises a VDD pin of the first chip, wherein the VDD pin is electrically connected to a power supply end; the GND pin of the first chip is grounded;
the OUTR pin and/or the OUTG pin and/or the OUTB pin of the first chip are electrically connected to the cathode of the first light-emitting diode; the anode of the first light emitting diode is electrically connected to the VDD pin of the first chip.
2. The device of claim 1, wherein the first light emitting diode comprises at least 1 light emitting diode.
3. The apparatus of claim 1, wherein the power supply circuit further comprises a power supply circuit providing a 1 st power supply connection;
the power supply circuit for providing the 1 st power supply connection mode comprises N VDD pins and GND pins of the first chip, wherein the VDD pins are connected to a power supply end in parallel, and the GND pins are grounded.
4. The apparatus of claim 1, wherein the power supply circuit further comprises a power supply circuit providing a 2 nd power supply connection;
the power supply circuit for providing the 2 nd power supply connection mode comprises N power supply circuits which are connected in series and provide the basic power supply connection mode, specifically, a VDD pin of a first chip is electrically connected to the power supply end, a GND pin end of the first chip is electrically connected to a VDD pin of a second chip, the VDD pin of the Nth chip is connected to a higher level GND pin sequentially, and the GND pin of the Nth chip is grounded.
5. The apparatus of claim 1, wherein the power supply circuit further comprises a power supply circuit providing a 3 rd power supply connection;
the power supply circuit for providing the 3 rd power supply connection mode is formed by connecting M power supply circuits for providing the basic power supply connection mode in parallel to form a first group of circuits, and then connecting N first groups of circuits in series, specifically, VDD pins of M first chips are connected to the power supply end in parallel, and GND pins of the first chips are connected in parallel to form a first group of circuits, and the N first groups of circuits are connected in series.
6. The apparatus of claim 1, wherein the power supply circuit further comprises a power supply circuit providing a 4 th power supply connection;
the power supply circuit providing the 4 th power supply connection mode is formed by connecting M power supply circuits providing the 2 nd power supply connection mode in parallel.
7. The apparatus of claim 1, wherein a current limiting resistor is further connected between the power supply terminal and a VDD pin of the first chip.
8. The device of claim 2, wherein the light emitting diode comprises one or a combination of two or more of white light, red light, green light, blue light, yellow light, and violet light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120270339.9U CN215991287U (en) | 2021-01-29 | 2021-01-29 | Flashing light control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120270339.9U CN215991287U (en) | 2021-01-29 | 2021-01-29 | Flashing light control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215991287U true CN215991287U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120270339.9U Active CN215991287U (en) | 2021-01-29 | 2021-01-29 | Flashing light control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215991287U (en) |
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2021
- 2021-01-29 CN CN202120270339.9U patent/CN215991287U/en active Active
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