Multi-wavelength power line control signal triggered LED colored lamp

Abstract

Disclosed in the present invention is a multi-wavelength power line control signal triggered LED colored lamp, comprising a controller and a lamp string. A positive electrode and a negative electrode at output ends of the controller are connected to the lamp string, the controller supplies power to the lamp string at the positive electrode and the negative electrode, and a control signal is loaded at the positive electrode or / and the negative electrode; the lamp string comprises multiple LED modules having a fixed wavelength range, and each LED module comprises a power line control signal triggering driving module and LEDs having a fixed wavelength range; on the basis of the control signals, the power line control signal triggering driving module controls the LEDs having a fixed wavelength range; and the wavelength range of light emitted from the LEDs having a fixed wavelength range of each LED module is different. According to the present invention, multiple LED modules having a fixed wavelength range are provided and are further controlled by control signals loaded at power output ends by the controller, so as to obtain the multi-wavelength power line control signal triggered LED colored lamp that has high cost performance, high purity, and wide wavelength range and is controlled by a driving chip to achieve rich effects.

Description

Multi-wavelength power line control signal triggers LED lights Technical Field

[0001] The invention relates to the field of LED colored lights, and in particular to LED colored lights triggered by multi-wavelength power line control signals. Background Art

[0002] The Chinese invention patent, "A Multi-Code Hybrid Power Line Edge Signal-Triggered Colored Light Device" (Application Number: 202110041784.2), discloses a multi-code hybrid power line edge signal-triggered colored light device. The device comprises a power line edge signal generator for generating address signals and light control signals and loading them onto the power line; a plurality of LED modules, each comprising an LED colored light group and an LED driver for driving the LED colored light group according to the address signals and light control signals loaded onto the power line; the plurality of LED modules comprising two or more LED modules, each comprising two or more LED driver address codes, and the plurality of LED modules being randomly arranged according to the LED driver address codes. Furthermore, in an embodiment, six LED modules are included, each with a different internal address code and randomly arranged within the product. Each LED module comprises a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode. Based on this patented solution, different colors can be achieved at different addresses by controlling the red, green, and blue primary color combination and duty cycle of each LED module. Under appropriate control methods, each group of LED modules can achieve colors in the same wavelength range.

[0003] The Chinese invention patent "A multi-code hybrid power line edge signal-triggered colored light device" (application number: 202110041784.2) and other similar technologies all utilize three primary colors, such as red, green, and blue, in each module, and further control their light-emitting combinations and duty cycles to achieve different color emission control. The colors achieved by these technologies are obtained by emitting light from the three primary colors of red, green, and blue. The human eye can see the corresponding light-emitting points of the red, green, and blue primary color LEDs, and the light emission colors seen from different angles also vary, seriously affecting the visual purity of the emitted light. Some applications do not require that each module emit a full range of colors using the three primary colors of red, green, and blue, or other primary color combinations. Instead, they only require that the entire product contain light in several classic wavelength ranges, further controlled by a driver chip to achieve dynamic control effects. For these applications, using light based on the three primary colors or other primary color combinations increases product cost. Moreover, colors in specific wavelength ranges, such as the warm white used for Christmas and the golden light used for Valentine's Day, cannot be achieved using the three primary colors of red, green, and blue, or other primary color combinations.

[0004] Therefore, it is of great value to provide a multi-wavelength LED colored light with high color purity, wide wavelength range, high cost performance, and further controlled by a driver chip to achieve rich effects.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide a multi-wavelength power line control signal triggered LED colored lights. By including several LED modules with fixed wavelength ranges and controlling the control signal loaded by the controller at the power output end, a high cost-effective, high-purity, wide wavelength range and multi-wavelength LED power line control signal triggered colored lights with rich effects controlled by a driver chip are achieved.

[0007] A multi-wavelength power line control signal triggers an LED colored light, the LED colored light comprising:

[0008] Controller, light string;

[0009] The positive and negative output terminals of the controller are connected to the light string, the controller supplies power to the light string at the positive and negative terminals, and loads a control signal at the positive and / or negative terminals;

[0010] The light string includes several LED modules with fixed wavelength ranges, each LED module includes a power line control signal triggering driving module and an LED with a fixed wavelength range; the power line control signal triggering driving module controls the LED with a fixed wavelength range according to the control signal;

[0011] The wavelength range of the light emitted by the LEDs of the fixed wavelength range of each LED module is different.

[0012] It should be understood that for LEDs in the same fixed wavelength range, such as LEDs in the red wavelength range, the wavelengths emitted by different red LEDs in the same product may also be slightly different. Such different LEDs should be understood as LEDs in the same fixed wavelength range.

[0013] It should be understood that an actual product may include the same number of LED modules of a single type with the fixed wavelength range, or may include different numbers of LED modules of a single type with the fixed wavelength range.

[0014] It should be understood that the LED modules of the fixed wavelength range can be connected in parallel; some of the LED modules of the fixed wavelength range can be connected in parallel in a parallel group, and several of the parallel groups can be connected in series; some of the LED modules of the fixed wavelength range can be connected in series in a series group, and several of the series groups can be connected in parallel.

[0015] Preferably, the power line control signal triggers the driving module to be a driver chip, which receives the control signal and controls the LEDs in the fixed wavelength range. The driver chip is an integrated circuit chip that can integrate diode circuits and other control circuits.

[0016] Preferably, the driver chip integrates the diode to protect the driver chip from damage when a reverse voltage is applied to the driver chip. After the driver chip integrates the diode, in some applications, a reverse light-emitting module can be added between the power line and the ground line. The reverse light-emitting module can be a conventional warm white light-emitting diode or a reverse fixed wavelength LED module, achieving a richer product effect.

[0017] Preferably, the driving chip is triggered by the control signal to perform calculations, and drives the LEDs in the fixed wavelength range based on the calculation results.

[0018] Preferably, the control signal includes an address signal, the driver chip receives the address signal and compares it with the address of the driver chip, and executes the control signal when the received address signal matches the address of the driver chip.

[0019] Preferably, the driver chip corresponding to a given driver chip address controls the LED within the given fixed wavelength range according to the control signal.

[0020] Preferably, the operation is an arithmetic operation, a logical operation, or a combination of an arithmetic operation and a logical operation; it can be a digital operation or an analog operation.

[0021] As another implementation scheme, the driving chip performs pulse counting operation based on the control signal.

[0022] As another implementation, the driver chip performs encoding and decoding operations on the control signal, with the high and low level widths of the control signal's pulses corresponding to encoded information. Preferably, different lengths of high levels, or different lengths of low levels, or a combination of high and low levels of different lengths of the control signal represent different logical encoding information.

[0023] As another implementation solution, the driver chip performs modulation and demodulation operations based on current or voltage frequency on the control signal, and drives the controlled LED according to the modulation and demodulation operation results.

[0024] Preferably, the controller includes a controllable switch module, and the control signal is loaded through the controllable switch module.

[0025] Preferably, the control signal is applied by controlling the controllable switch module to be turned on and off. It should be understood that when the controllable switch module is turned on and off to apply the control signal, the LED module with a fixed wavelength range receives power while also receiving a pulse signal, or a rising edge signal, or a falling edge signal, generated by the controllable switch module being turned on and off.

[0026] As another implementation, the controllable switch module includes a first controllable switch and an intermediate level module. When the first controllable switch is off, the intermediate level module forms a second level, and the control signal is applied by switching between a power supply level and the second level. The second level is higher than a reference ground and lower than the power supply level.

[0027] Preferably, the light string includes at least three LED modules with different fixed wavelengths; preferably, red, green, and blue. In products arranged in address order, having at least three LED modules with different fixed wavelengths achieves a significant water flow effect.

[0028] Preferably, the light string includes six LED modules with different fixed wavelength ranges, namely a first LED module, a second LED module, a third LED module, a fourth LED module, a fifth LED module and a sixth LED module;

[0029] The driver chip address of the first LED module is a first address, the driver chip address of the second LED module is a second address, the driver chip address of the third LED module is a third address, the driver chip address of the fourth LED module is a fourth address, the driver chip address of the fifth LED module is a fifth address, and the driver chip address of the sixth LED module is a sixth address.

[0030] Preferably, the LED modules of the plurality of fixed wavelength ranges are arranged in a fixed pattern according to the address of the driver chip.

[0031] Preferably, the LED modules are arranged in the order of the driver chip addresses. When arranged in order, the controller can be used to control the LED modules to light up in the order of arrangement, thereby achieving a multi-colored flowing water effect control.

[0032] Alternatively, the addresses may be arranged in fixed combinations.

[0033] As another implementation, the LED modules of the various fixed wavelength ranges are randomly mixed and arranged. When arranged in a random, mixed pattern, the controller can control the LED modules to achieve a controllable random flickering effect. For example, by rapidly dimming the LED module at a given address, the color of the LED corresponding to the LED module at the given address is dimmed. However, since the LED modules of the various fixed wavelength ranges are randomly arranged throughout the product, the position of the LED module at a given address is random, thus achieving a controllable random flickering effect. Furthermore, through software control, a variety of controllable random flickering effects can be achieved.

[0034] Preferably, the LED with a fixed wavelength range of the first LED module is a red light LED, the LED with a fixed wavelength range of the second LED module is a green light LED, the LED with a fixed wavelength range of the third LED module is an orange light LED, the LED with a fixed wavelength range of the fourth LED module is a blue light LED, the LED with a fixed wavelength range of the fifth LED module is a violet light LED, and the LED with a fixed wavelength range of the sixth LED module is a warm white LED.

[0035] In some embodiments, the driver chip has several output channels, one of which is used to drive the LEDs in the fixed wavelength range, and the remaining channels drive LEDs in the same wavelength range. In some embodiments, the remaining channels of the driver chip drive warm white LEDs.

[0036] The colored lantern provided by the present invention includes several LED modules with fixed wavelength ranges. The power line control signal triggers the driving module to control the LED modules with fixed wavelength ranges according to the control signal. The controller further controls the control signal loaded at the power output end, thereby achieving a high cost-effective, high-purity, multi-wavelength LED power line control signal-triggered colored lantern with a wide wavelength range and rich effects controlled by a driver chip.

[0037] Compared with the solution in which each LED module includes three LEDs of the three primary colors of red, green and blue, the present invention has the following four advantages: 1. The LED module only requires a single light-emitting diode with a fixed target wavelength, saving the cost of light-emitting diode materials; 2. The LED module only requires welding a single light-emitting diode with a fixed target wavelength, which greatly reduces the number of packaging wire bonding times, reducing packaging costs and defective rates; 3. When the LED module lights up the light-emitting diode with a fixed target wavelength, multiple light spots will not be formed; 4. The driver chip of the LED module only needs one IO port to drive the light-emitting diode with a fixed target wavelength, which can save redundant IO port chip resources and thus reduce the cost of the driver chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG1 is a diagram showing a multi-wavelength power line control signal triggering LED colored lights in full parallel mode provided by an embodiment;

[0039] FIG2 is a red LED module in an embodiment;

[0040] FIG3 is a green LED module in an embodiment;

[0041] FIG4 is an orange LED module in an embodiment;

[0042] FIG5 is a blue LED module in an embodiment;

[0043] FIG6 is a purple LED module in an embodiment;

[0044] FIG7 is a warm white LED module in an embodiment;

[0045] FIG8 is a driving chip in an embodiment;

[0046] FIG9 is a diagram of a controller according to an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0048] Example

[0049] As shown in FIG1 , a multi-wavelength power line control signal triggering an LED colored light 1 in full parallel mode includes:

[0050] Controller 11, light string 12;

[0051] The controller 11 supplies power to the light string 12 at the positive electrode 111 and the negative electrode 112 , and loads a control signal at the negative electrode 112 ;

[0052] Light string 1 includes six LED modules with fixed wavelength ranges: a red LED module 121, a green LED module 122, an orange LED module 123, a blue LED module 124, a violet LED module 125, and a warm white LED module 126. The six LED modules with fixed wavelength ranges are connected in parallel. In this embodiment, each of the six fixed wavelength ranges comprises a single module. In other embodiments, each fixed wavelength range may comprise multiple modules, either the same number or different numbers.

[0053] The controller 11 is connected to the positive electrode of a 3.3V power supply at an input terminal 13 , and is connected to the negative electrode of a 3.3V power supply at an input terminal 14 .

[0054] The structure of red LED module 121 is shown in Figure 2. It includes a driver chip 21 and a red LED 22 fixed to the red wavelength range. Driver chip 21 receives control signals to control the brightness of red LED 22 to brighten or dim, or to adjust the duty cycle. As shown in Figure 2, the output terminal of driver chip 21 is connected to the cathode of red LED 22, and the power supply terminal of driver chip 21 is connected to the anode of red LED 22. Driver chip 21 has an address of 1.

[0055] The structure of green LED module 122 is shown in Figure 3. It includes a driver chip 31 and a green LED 32 fixed to the green wavelength range. Driver chip 31 receives control signals to control the brightness of green LED 32 to brighten or dim, or to adjust the duty cycle. As shown in Figure 3, the output terminal of driver chip 31 is connected to the cathode of green LED 32, and the power supply terminal of driver chip 31 is connected to the anode of green LED 32. The address of driver chip 31 is 2.

[0056] The structure of orange LED module 123 is shown in Figure 4. It includes a driver chip 41 and an orange LED 42 fixed to the orange wavelength range. Driver chip 41 receives control signals to control the brightness of orange LED 42, whether bright or dim, or to adjust the duty cycle. As shown in Figure 4, the output terminal of driver chip 41 is connected to the cathode of orange LED 42, and the power supply terminal of driver chip 41 is connected to the anode of orange LED 42. The address of driver chip 41 is 3.

[0057] The structure of blue LED module 124 is shown in Figure 5. It includes a driver chip 51 and a blue LED 52 fixed to the blue wavelength range. Driver chip 51 receives control signals to control the blue LED 52 to brighten or dim, or to adjust the duty cycle brightness. As shown in Figure 5, the output terminal of driver chip 51 is connected to the cathode of blue LED 52, and the power supply terminal of driver chip 51 is connected to the anode of blue LED 52. The address of driver chip 51 is 4.

[0058] The structure of the purple LED module 125 is shown in Figure 6. It includes a driver chip 61 and a purple LED 62 fixed to the purple wavelength range. The driver chip 61 receives control signals and controls the purple LED 62 to brighten or dim, or to adjust the duty cycle brightness. As shown in Figure 6, the output terminal of the driver chip 61 is connected to the cathode of the purple LED 62, and the power supply terminal of the driver chip 61 is connected to the anode of the purple LED 62. The address of the driver chip 61 is 5.

[0059] The structure of warm white LED module 126 is shown in Figure 7. It includes a driver chip 71 and a warm white LED 72 fixed to the aqua-blue wavelength range. Driver chip 71 receives control signals to control the brightness of warm white LED 72 to brighten or dim, or to adjust the duty cycle brightness. As shown in Figure 7, the output terminal of driver chip 71 is connected to the cathode of warm white LED 72, and the power supply terminal of driver chip 71 is connected to the anode of warm white LED 72. The address of driver chip 71 is 6.

[0060] The six LED modules with fixed wavelength ranges are arranged in order of chip addresses.

[0061] The driver chip 21, driver chip 31, driver chip 41, driver chip 51, driver chip 61 and driver chip 71 all have the same structure. As shown in Figure 8, the driver chip 8 includes: a control signal triggering operation unit 81, which is used to perform operations according to the control signal input from the power line and output the operation results; a charging unit 82, which is used to provide a power supply level for the control signal triggering operation unit 81 according to the control signal input from the power line, charging when the control signal is at a high level, and discharging when the control signal is at a low level; an initialization unit 83, which is powered by the charging unit 82, and is used to initialize the control signal triggering operation unit 81 according to the power supply level provided by the charging unit 82; an address module 84, which is powered by the charging unit 82 and is used to store the address of the driver chip 8.

[0062] As shown in FIG9 , the controller 9 (the controller 11 of this embodiment adopts the structure shown in FIG9 ) includes an NMOS transistor 91 serving as a controllable switch. The NMOS transistor's drain 911 is grounded, its source 912 serves as the controller's output cathode 112, and its gate 913 is connected to a microprocessor 92. An input 93 of the controller 9 is connected to the positive electrode of a 3.3V power supply and serves as the controller's output cathode 111. An input 94 of the controller 9 is connected to the negative electrode of the 3.3V power supply and shares a common ground with the NMOS transistor's drain 911. A power supply terminal 921 of the microprocessor 92 is connected to the input 93 of the controller 9, while a ground terminal 922 of the microprocessor 92 is connected to the input 94 of the controller 9, which is connected to the negative electrode of the 3.3V power supply. A software program running on the microprocessor 92 controls the on / off switching of the NMOS transistor 91, generating a control signal that is applied to the negative electrode of the power line.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-wavelength power line control signal triggering LED colored lights, characterized in that: The LED colored lights include: Controller, light string; The positive and negative poles of the controller output terminal are connected to the light string, the controller supplies power to the light string at the positive and negative poles, and loads a control signal at the positive and / or negative poles; The light string includes several LED modules with fixed wavelength ranges, each LED module includes a power line control signal triggering driving module and an LED with a fixed wavelength range; the power line control signal triggering driving module controls the LED with a fixed wavelength range according to the control signal; The fixed wavelength range of LEDs in each LED module emits light in a different wavelength range.

2. The LED colored lamp according to claim 1, characterized in that: The power line control signal triggers the driving module to be a driving chip, and the driving chip receives the control signal to control the LED in the fixed wavelength range.

3. The LED colored lamp as claimed in claim 2, characterized in that: The driving chip is triggered by the control signal to perform calculations, and drives the LEDs in the fixed wavelength range based on the calculation results.

4. The LED colored lamp as claimed in claim 3, characterized in that: The control signal includes an address signal. The driver chip receives the address signal and compares it with the driver chip address. When the received address signal matches the driver chip address, the control signal is executed.

5. The LED colored lamp as claimed in claim 4, characterized in that: The operation is an arithmetic operation, or a logical operation, or a combination of an arithmetic operation and a logical operation.

6. The LED colored lamp as claimed in claim 4, characterized in that: The driving chip performs pulse counting operation based on the control signal.

7. The LED colored lamp according to claim 4, characterized in that: The driving chip performs encoding and decoding operations on the control signal, and the pulse high and low level widths of the control signal correspond to the encoding information.

8. The LED colored lamp according to claim 7, characterized in that: Different logic coding information is represented by high levels of different lengths, or low levels of different lengths, or a combination of high levels of different lengths and low levels of different lengths of the control signal.

9. The LED colored lamp as claimed in claim 4, characterized in that: The driving chip performs modulation and demodulation operations based on current or voltage frequency on the control signal, and drives the controlled LED according to the modulation and demodulation operation results.

10. The LED colored lamp according to claim 4, characterized in that: The controller includes a controllable switch module, and the control signal is loaded through the controllable switch module.

11. The LED colored lamp according to claim 10, characterized in that: The controllable switch module includes a first controllable switch and an intermediate level module. When the first controllable switch is turned off, the intermediate level module forms a second level, and the control signal is loaded by switching between the power supply level and the second level.

12. The LED colored lamp according to claim 10, characterized in that: The control signal is loaded by controlling the controllable switch module to turn on and off.

13. The LED colored lamp according to claim 1, characterized in that: The light string includes at least three LED modules with different fixed wavelength ranges.

14. The LED colored lamp according to claim 4, characterized in that: The light string includes six LED modules with different fixed wavelength ranges, namely a first LED module, a second LED module, a third LED module, a fourth LED module, a fifth LED module and a sixth LED module; The driver chip address of the first LED module is a first address, the driver chip address of the second LED module is a second address, and the driver chip address of the third LED module is a third address. The driver chip address of the fourth LED module is a fourth address, the driver chip address of the fifth LED module is a fifth address, and the driver chip address of the sixth LED module is a sixth address.

15. The LED colored lamp according to claim 14, characterized in that: The LED with a fixed wavelength range of the first LED module is a red light LED, the LED with a fixed wavelength range of the second LED module is a green light LED, the LED with a fixed wavelength range of the third LED module is an orange light LED, the LED with a fixed wavelength range of the fourth LED module is a blue light LED, the LED with a fixed wavelength range of the fifth LED module is a violet light LED, and the LED with a fixed wavelength range of the sixth LED module is a warm white LED.

Images