Lamp device for parameter adjustment based on NFC and adjustment method

Abstract

The invention provides a lamp device for parameter adjustment based on NFC and an adjustment method, and the device comprises a parameter setting module which comprises an NFC recognition unit and a display operation unit, and the NFC recognition unit is connected with the display operation unit; the parameter processing module is connected with the parameter setting module through NFC; the parameter processing module comprises a first color temperature signal output port, a second color temperature signal output port and a lumen signal output port; the color temperature adjusting circuit is respectively connected with the first color temperature signal output port and the second color temperature signal output port; the lumen adjusting circuit is connected with the lumen signal output port; the power supply module is connected with the lumen adjusting circuit; and the LED module is respectively connected with the color temperature adjusting circuit and the power supply module. The color temperature and lumen parameters of the lamp can be flexibly and conveniently adjusted in an NFC non-contact mode.

Description

Technical Field

[0001] This application belongs to the technical field of lighting adjustment, and relates to a lighting device and adjustment method based on NFC for parameter adjustment. Background Technology

[0002] Currently, LED (Light Emitting Diode) lighting fixtures are widely used in various fields, and color temperature and lumens are important design parameters. LED color temperature is a light source color characteristic index defined based on blackbody radiation theory, expressed in absolute temperature (K) as the correspondence between the light source color and the color radiated by a heated blackbody. Based on numerical range, it can be divided into three main categories: low color temperature (below 3300K, reddish light), medium color temperature (3000-6000K, neutral white), and high color temperature (above 6000K, bluish light), corresponding to different visual perceptions and application scenarios. In LED lighting fixtures, lumen adjustment is essentially adjusting the brightness of the fixture, because a lumen (lm) is a unit measuring the total amount of light emitted by a light source, directly reflecting the intensity of brightness perceived by the human eye. Adjusting the lumens of an LED light changes its output luminous flux, thereby achieving a smooth transition from dim to bright. Some end users do not want to see switches and require dedicated, customized CCT (Correlated Color Temperature) lamps and lumen lamps. They want the lamps to be adjustable in CCT (color temperature) and lumen without requiring switches.

[0003] However, regarding parameter settings, especially color temperature and lumen settings, despite continuous technological advancements, some inherent drawbacks and challenges remain. For instance, the flexibility of color temperature and lumen adjustment is limited; some adjustments require disassembling the luminaire and working on the circuitry, making the process cumbersome. Summary of the Invention

[0004] This application provides a lighting device and method for parameter adjustment based on NFC, which solves the problems of limited flexibility and cumbersome operation in the process of adjusting lighting parameters for debugging users, as well as the problem of rapid customization of lighting parameters for end users.

[0005] In a first aspect, this application provides a lighting device for parameter adjustment based on NFC, comprising: a parameter setting module, including an NFC identification unit and a display operation unit, wherein the NFC identification unit is connected to the display operation unit; a parameter processing module, connected to the parameter setting module via NFC; the parameter processing module including a first color temperature signal output port, a second color temperature signal output port, and a lumen signal output port; a color temperature adjustment circuit, respectively connected to the first color temperature signal output port and the second color temperature signal output port; a lumen adjustment circuit, connected to the lumen signal output port; a power supply module, connected to the lumen adjustment circuit; and an LED module, respectively connected to the color temperature adjustment circuit and the power supply module; wherein, the current ratio formed by the first color temperature signal from the first color temperature signal output port and the second color temperature signal from the second color temperature signal output port in the color temperature adjustment circuit is used to determine the color temperature parameter of the LED module; the lumen signal from the lumen signal output port acts on the switching frequency or duty cycle of the power supply module to adjust the power supply output current, thereby determining the lumen parameter of the LED module.

[0006] In one implementation of the first aspect, the color temperature adjustment circuit includes a first adjustment unit and a second adjustment unit, and the LED module includes a first LED unit and a second LED unit. Both the first LED unit and the second LED unit are composed of light-emitting diodes connected in series and parallel. The anodes of the first LED unit and the second LED unit are both connected to the positive output terminal of the power supply module. The first adjustment unit is connected to the first color temperature signal output port and the cathode of the first LED unit, respectively. The second adjustment unit is connected to the second color temperature signal output port and the cathode of the second LED unit, respectively.

[0007] In one implementation of the first aspect, the parameter processing module includes an antenna, an NFC chip, and an MCU chip; the NFC chip is connected to the antenna and the MCU chip respectively; the MCU chip is provided with a first color temperature signal output port, a second color temperature signal output port, and a lumen signal output port.

[0008] In one implementation of the first aspect, both the first color temperature signal output port and the second color temperature signal output port are digital signal ports; the first adjustment unit includes a first resistor, a second resistor, a fifth resistor, and a first transistor; the second adjustment unit includes a third resistor, a fourth resistor, a sixth resistor, and a second transistor; the first color temperature signal output port is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and the first end of the first transistor, and the other end of the second resistor is connected to the negative output terminal of the power supply module; the third end of the first transistor is connected to one end of the fifth resistor, the second end of the first transistor is connected to the other end of the second resistor and the negative output terminal of the power supply module, and the other end of the fifth resistor is connected to the cathode of the first LED unit; the second color temperature signal output port is connected to one end of the third resistor, the other end of the third resistor is connected to one end of the fourth resistor and the first end of the second transistor, and the other end of the fourth resistor is connected to the negative output terminal of the power supply module; the third end of the second transistor is connected to one end of the sixth resistor, the second end of the second transistor is connected to the other end of the fourth resistor and the negative output terminal of the power supply module, and the other end of the sixth resistor is connected to the cathode of the second LED unit.

[0009] In one implementation of the first aspect, the first adjustment unit further includes a first filter circuit, and the second adjustment unit further includes a second filter circuit; the lumen adjustment circuit includes a third filter circuit; the first color temperature signal output port is connected to the first filter circuit, and a first analog voltage signal output by the first filter circuit is transmitted to one end of the first resistor; the second color temperature signal output port is connected to the second filter circuit, and a second analog voltage signal output by the second filter circuit is transmitted to one end of the third resistor; the lumen signal output port is connected to the third filter circuit, and the third filter circuit outputs a third analog voltage signal.

[0010] In one implementation of the first aspect, both the first color temperature signal output port and the second color temperature signal output port are analog signal ports; the first adjustment unit includes a second resistor, a fifth resistor, and a first transistor; the second adjustment unit includes a fourth resistor, a sixth resistor, and a second transistor; the first color temperature signal output port is connected to one end of the second resistor and the first end of the first transistor, the third end of the first transistor is connected to one end of the fifth resistor, the second end of the first transistor and the other end of the second resistor are both connected to the negative output terminal of the power supply module, and the other end of the fifth resistor is connected to the cathode of the first LED unit; the second color temperature signal output port is connected to one end of the fourth resistor and the first end of the second transistor, the third end of the second transistor is connected to one end of the sixth resistor, the second end of the second transistor and the other end of the fourth resistor are both connected to the negative output terminal of the power supply module, and the other end of the sixth resistor is connected to the cathode of the second LED unit.

[0011] In one implementation of the first aspect, the parameter processing module includes an antenna and an NFC chip; the NFC chip is connected to the antenna; the NFC chip is provided with a first color temperature signal output port, a second color temperature signal output port and a lumen signal output port; the first color temperature signal output port is connected to the first adjustment unit, the second color temperature signal output port is connected to the second adjustment unit, and the lumen signal output port is connected to the lumen adjustment circuit.

[0012] In one implementation of the first aspect, the lumen adjustment circuit includes an opto-isolation unit and an LED driving unit in the power supply module; the opto-isolation unit is connected to the lumen signal output port and the LED driving unit respectively; the output port of the LED driving unit is connected to the transformer of the power supply module; the power supply module changes the output current by changing the duty cycle or frequency of the switch operation per unit time according to the lumen signal of the lumen signal output port, thereby realizing lumen adjustment.

[0013] In one implementation of the first aspect, the color temperature adjustment circuit includes a first adjustment unit and a second adjustment unit, and the LED module includes a first LED unit and a second LED unit. Both the first LED unit and the second LED unit are composed of light-emitting diodes connected in series and parallel. The cathodes of the first LED unit and the second LED unit are connected to the negative output terminal of the power supply module through current-limiting resistors. The first adjustment unit is connected to the first color temperature signal output port and the anode of the first LED unit, respectively. The second adjustment unit is connected to the second color temperature signal output port and the anode of the second LED unit, respectively.

[0014] Secondly, this application provides an NFC-based method for adjusting lighting parameters, applied to a lighting device that adjusts parameters based on NFC; comprising: establishing an NFC connection between a parameter setting module and a parameter processing module in the lighting device; acquiring color temperature parameter instructions and lumen parameter instructions; determining the current ratio of a first LED unit and a second LED unit in an LED module according to the color temperature parameter instructions, and generating a first color temperature signal and a second color temperature signal based on the current ratio; the first color temperature signal acting on the first LED unit through a first adjustment circuit, and the second color temperature signal acting on the second LED unit through a second adjustment circuit; the first LED unit and the second LED unit as a whole LED, reflecting the color temperature adjustment effect; wherein, the color temperature adjustment effect is any one of the color temperatures of the first LED unit and the second LED unit, and includes both the color temperatures of the first LED unit and the second LED unit; determining the lumen signal according to the lumen parameter instructions; the lumen signal acting on the switching frequency or duty cycle of the power supply module to adjust the power supply output current, thereby determining the lumen adjustment effect of the whole LED.

[0015] As described above, the NFC-based lighting device and adjustment method for parameter adjustment described in this application have the following beneficial effects:

[0016] This application allows for flexible and convenient adjustment of the color temperature and lumen parameters of a luminaire via NFC contactless technology. The application designs two types of CCT LED loads using a first LED unit and a second LED unit. Users can select the desired CCT or lumen level using the GUI of a mobile device. Based on the set color temperature parameter, the current ratio of the two CCTs (e.g., 2700K and 5000K) is adjusted to obtain the desired five color temperatures or any value within a five-color temperature range for the luminaire. Similarly, the lumen value of the luminaire is changed based on the set lumen level parameter. Therefore, through the NFC function designed into the hardware circuit structure, this application allows luminaires without switches to be set to specific CCT and lumen levels according to customer requirements before leaving the factory. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural connection diagram of the NFC-based lighting device for parameter adjustment as described in an embodiment of this application.

[0018] Figure 2 The diagram shown is a first functional structure diagram of a lighting device for parameter adjustment based on NFC, as described in an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the second functional structure of the lighting device for parameter adjustment based on NFC as described in an embodiment of this application.

[0020] Figure 4 This is a schematic diagram of the third functional structure of the lighting device for parameter adjustment based on NFC as described in an embodiment of this application.

[0021] Figure 5 The diagram shows the power supply and lumen circuit structure of the NFC-based lighting device for parameter adjustment as described in this application embodiment.

[0022] Figure 6A The diagram shown is a first circuit structure diagram of a lighting device for parameter adjustment based on NFC, as described in an embodiment of this application.

[0023] Figure 6B The diagram shown is a second circuit structure diagram of the NFC-based lighting device for parameter adjustment as described in an embodiment of this application.

[0024] Figure 6C The diagram shown is a third circuit structure diagram of the NFC-based lighting device for parameter adjustment as described in this application embodiment.

[0025] Figure 6D The diagram shown is a fourth circuit structure diagram of the NFC-based lighting device for parameter adjustment as described in this application embodiment.

[0026] Figure 6E The diagram shown is the fifth circuit structure diagram of the NFC-based lighting device for parameter adjustment as described in this application embodiment.

[0027] Figure 7 The diagram shown illustrates the principle flowchart of the NFC-based lamp parameter adjustment method described in this application embodiment.

[0028] Figure 8 This is a schematic diagram of the first display operation interface of the NFC-based lamp parameter adjustment method described in this application embodiment.

[0029] Figure 9 This is a schematic diagram of the second display operation interface of the NFC-based lamp parameter adjustment method described in this application embodiment.

[0030] Component designation explanation

[0031] 1 Lighting fixtures that adjust parameters based on NFC 11 Parameter setting module 111 NFC identification unit 112 Display operation unit 12 Parameter processing module 13 Color temperature adjustment circuit 14 Lumen adjustment circuit 15 Power supply module 16 LED module S71~S74 step Detailed Implementation

[0032] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0034] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0035] Please see Figure 1 The diagram shows the structural connection of the lighting device for parameter adjustment based on NFC, as described in an embodiment of this application. Figure 1 As shown, this embodiment provides a lighting device 1 for parameter adjustment based on NFC, including: a parameter setting module 11, a parameter processing module 12, a color temperature adjustment circuit 13, a lumen adjustment circuit 14, a power supply module 15, and an LED module 16.

[0036] The parameter setting module 11 includes an NFC identification unit 111 and a display operation unit 112, wherein the NFC identification unit 111 is connected to the display operation unit 112.

[0037] The parameter processing module 12 is connected to the parameter setting module 11 via NFC; the parameter processing module 12 includes a first color temperature signal output port, a second color temperature signal output port, and a lumen signal output port.

[0038] The color temperature adjustment circuit 13 is connected to the first color temperature signal output port and the second color temperature signal output port, respectively.

[0039] The lumen adjustment circuit 14 is connected to the lumen signal output port.

[0040] The power supply module 15 is connected to the lumen adjustment circuit 14.

[0041] The LED module 16 is connected to the color temperature adjustment circuit 13 and the power supply module 15, respectively.

[0042] The current ratio formed by the first color temperature signal at the first color temperature signal output port and the second color temperature signal at the second color temperature signal output port in the color temperature adjustment circuit 13 is used to determine the color temperature parameters of the LED module 16; the lumen signal at the lumen signal output port acts on the switching frequency or duty cycle of the power supply module 15 to adjust the power supply output current in order to determine the lumen parameters of the LED module 16.

[0043] Therefore, this application eliminates the need for any switches for adjusting output current, lumen output, and CCT. By integrating the NFC function into the lighting circuit, CCT output and lumen output can be adjusted without opening the lighting product packaging, replacing the cumbersome operation of traditional adjustment switches.

[0044] In one embodiment, the color temperature adjustment circuit includes a first adjustment unit and a second adjustment unit, and the LED module includes a first LED unit and a second LED unit; the anodes of the first LED unit and the second LED unit are both connected to the positive output terminal of the power supply module.

[0045] The first adjustment unit is connected to the first color temperature signal output port and the cathode of the first LED unit, respectively; the second adjustment unit is connected to the second color temperature signal output port and the cathode of the second LED unit, respectively.

[0046] In one embodiment, the parameter processing module includes an antenna, an NFC chip, and an MCU (Microcontroller Unit) chip.

[0047] The NFC chip is connected to the antenna and the MCU chip respectively; the MCU chip is provided with a first color temperature signal output port, a second color temperature signal output port and a lumen signal output port.

[0048] Please see Figure 2 This is a schematic diagram of the first functional structure of a lighting device for parameter adjustment based on NFC, as described in an embodiment of this application. Figure 2As shown, a lighting device scheme in which the parameter processing module 12 includes an MCU chip is illustrated. The parameter setting module 11 includes an NFC identification unit 111 and a display operation unit 112. The NFC identification unit 111 is connected to the display operation unit 112, which can be a GUI (Graphical User Interface) interface displaying lumen parameter options (High, Med, Low) and color temperature CCT parameter options (2700K, 3000K, 3500K, 4000K, 5000K). The NFC chip and MCU chip in the parameter processing module 12 transmit display operation commands via two PWM signals (PWM1, PWM2). The MCU chip in the parameter processing module 12 includes a first color temperature signal output port, a second color temperature signal output port, and a lumen signal output port. The color temperature adjustment circuit, i.e., the CCT selection circuit 13, is connected to the first color temperature signal output port and the second color temperature signal output port, respectively. The lumen adjustment circuit, i.e., the lumen selection circuit 14, is connected to the lumen signal output port, and the lumen selection circuit affects the power supply output current. The power supply module 15 is an AC input. input; LED module 16 is a 2-channel LED load.

[0049] Please see Figure 3 This is a schematic diagram of the second functional structure of the lighting device for parameter adjustment based on NFC, as described in an embodiment of this application. Figure 3 As shown, another lighting device scheme in which the parameter processing module 12 includes an MCU chip is illustrated. The parameter setting module 11 includes an NFC identification unit 111 and a display operation unit 112. The NFC identification unit 111 is connected to the display operation unit 112, which can be a GUI (Graphical User Interface) interface displaying lumen parameter options (High, Med, Low) and color temperature CCT parameter options (2700K, 3000K, 3500K, 4000K, 5000K). The NFC chip and MCU chip in the parameter processing module 12 transmit display operation commands via I2C (SDA, SCL). The MCU chip in the parameter processing module 12 includes a first color temperature signal output port, a second color temperature signal output port, and a lumen signal output port. The color temperature adjustment circuit, i.e., the CCT selection circuit 13, is connected to the first color temperature signal output port and the second color temperature signal output port, respectively. The lumen adjustment circuit, i.e., the lumen selection circuit 14, is connected to the lumen signal output port, and the lumen selection circuit affects the power supply output current. The power supply module 15 is an AC input. input; LED module 16 is a 2-channel LED load.

[0050] Please see Figure 4 This is a schematic diagram of the third functional structure of the lighting device for parameter adjustment based on NFC, as described in an embodiment of this application. Figure 4 As shown, a lighting device scheme in which the parameter processing module 12 does not contain an MCU chip is illustrated. The parameter setting module 11 includes an NFC identification unit 111 and a display operation unit 112. The NFC identification unit 111 is connected to the display operation unit 112, which can be a GUI (Graphical User Interface) interface that displays lumen parameter options (High, Med, Low) and color temperature CCT parameter options (2700K, 3000K, 3500K, 4000K, 5000K). The parameter processing module 12 only contains an NFC chip. The NFC chip in the parameter processing module 12 includes a first color temperature signal output port, a second color temperature signal output port, and a lumen signal output port. The color temperature adjustment circuit, i.e., the CCT selection circuit 13, is connected to the first color temperature signal output port and the second color temperature signal output port, respectively. The lumen adjustment circuit, i.e., the lumen selection circuit 14, is connected to the lumen signal output port, and the lumen selection circuit affects the power supply output current. The power supply module 15 is an AC input. The LED module 16 is a two-channel LED load.

[0051] In practical applications, Figures 2 to 4 The GUI interface can be installed on a computer, tablet, or mobile phone. The NFC identification unit 111 in the parameter setting module 11 is powered through the wired display operation unit 112, that is, through the connected computer, tablet, or mobile phone.

[0052] The principle behind adjusting the color temperature effect by adjusting the current ratio of two CCT channels is as follows:

[0053] The theoretical basis for obtaining the target color temperature by mixing two color temperature LEDs is that the reciprocal of the target color temperature (1 / Ttarget) is linearly related to the warm light current ratio K1: 1 / Ttarget = aK1 + b, which can be converted to K1=(1 / Ttarget-b) / a.

[0054] When K1=100, Ttarget=Tw (warm color temperature), so 100=(1 / Tw-b) / a (Equation 1)

[0055] When K1=0, Ttarget=Tc (cool color temperature), resulting in 0=(1 / Tc-b) / a (Equation 2).

[0056] From equations 1 and 2, we obtain:

[0057] a=(1 / Tw-1 / Tc) / 100 (Equation 3)

[0058] b = 1 / Tc (Equation 4)

[0059] The current embodiment uses LEDs with two color temperatures, Tw=2700K and Tc=5000K, for color mixing. Substituting Tw=2700K and Tc=5000K into Equations 3 and 4, we obtain a and b:

[0060] a=(1 / Tw-1 / Tc) / 100 =(1 / 2700-1 / 5000) / 100 =0.0000017037;

[0061] b = 1 / Tc = 1 / 5000 = 0.0002;

[0062] Therefore, for color mixing at different color temperatures, we only need to substitute Tw and Tc into Equations 3 and 4 to obtain a and b.

[0063] The proportion of the first color temperature 2700K is defined as: K1 = 1.0 / Ttarget − 0.0002 / 0.0000017037;

[0064] The proportion of the second color temperature 5000K is defined as: K2 = 100 − K1;

[0065] Where K1 and K2 represent the first current ratio and the second current ratio, respectively.

[0066] Please refer to Table 1 for the current ratio information for the five commonly used color temperatures.

[0067] Table 1 Current Ratio Information Table

[0068] Target color (K) <![CDATA[Percentage of 2700K, 𝐾1 (%)]]> <![CDATA[Percentage of 5000K, 𝐾2 (%)]]> 2700 100.0 0.0 3000 81.2 18.8 3500 50.3 49.7 4000 23.5 76.5 5000 0.0 100.0

[0069] On the GUI interface of the terminal device or host computer, select the target color temperature. The MCU chip in the parameter processing module calculates the current ratios K1 and K2 based on the target color temperature and formula in Table 1, and stores them in the MCU's EEPROM (Electrically Erasable Programmable Read-Only Memory). Among them, K1 corresponds to the duty cycle of PWM1, that is, the duty cycle of the first color temperature 2700K, and K2 corresponds to the duty cycle of PWM2, that is, the duty cycle of the second color temperature 5000K.

[0070] If there is no MCU-based lighting adjustment scheme, the calculation formula is placed on the GUI device: after selecting the target color temperature, K1 and K2 are calculated simultaneously and stored in the EEPROM of the NFC chip.

[0071] In one embodiment, the lumen adjustment circuit includes an opto-isolation unit and an LED driving unit of the power supply module.

[0072] The opto-isolation unit is connected to the lumen signal output port and the LED driving unit respectively; the output port of the LED driving unit is connected to the transformer of the power supply module; the power supply module changes the duty cycle or frequency of the switch operation per unit time according to the lumen signal of the lumen signal output port to change the output current, thereby realizing lumen adjustment.

[0073] Please see Figure 5 The diagram shows the power supply and lumen circuit structure of the NFC-based lighting device for parameter adjustment as described in this application embodiment. Figure 5 As shown, the lumen adjustment circuit 14 includes an opto-isolation unit (U19, R10, R11) and an LED driver unit (U20, Q3, R9) in the power supply module. The opto-isolation unit is connected to the lumen signal output port PA12 and the LED driver chip U20 of the LED driver unit, respectively. The third terminal of the output port Q3 of the LED driver unit is connected to the transformer T1 of the power supply module 15. The power supply module 15 changes the duty cycle or frequency of the switch operation per unit time according to the lumen signal from the lumen signal output port to change the output current, thereby realizing lumen adjustment.

[0074] In one embodiment, both the first color temperature signal output port and the second color temperature signal output port are digital signal ports; the first adjustment unit includes a first resistor, a second resistor, a fifth resistor and a first transistor, and the second adjustment unit includes a third resistor, a fourth resistor, a sixth resistor and a second transistor.

[0075] The first color temperature signal output port is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and the first end of the first transistor, and the other end of the second resistor is connected to the negative output terminal of the power supply module; the third end of the first transistor is connected to one end of the fifth resistor, the second end of the first transistor is connected to the other end of the second resistor and the negative output terminal of the power supply module, and the other end of the fifth resistor is connected to the cathode of the first LED unit.

[0076] The second color temperature signal output port is connected to one end of the third resistor, the other end of the third resistor is connected to one end of the fourth resistor and the first end of the second transistor, and the other end of the fourth resistor is connected to the negative output terminal of the power supply module; the third end of the second transistor is connected to one end of the sixth resistor, the second end of the transistor is connected to the other end of the fourth resistor and the negative output terminal of the power supply module, and the other end of the sixth resistor is connected to the cathode of the second LED unit.

[0077] Please see Figure 6A The diagram shows the first circuit structure of the lighting device for parameter adjustment based on NFC, as described in an embodiment of this application. Figure 6A As shown, in parameter processing module 12, the antenna is ANTENNA, the NFC chip is U1, and the MCU chip is U2. Both the first color temperature signal output port PB15 and the second color temperature signal output port PB14 are configured as digital signal ports via the MCU chip U2. The first adjustment unit includes a first resistor R1, a second resistor R2, a fifth resistor R5, and a first transistor Q1. The second adjustment unit includes a third resistor R3, a fourth resistor R4, a sixth resistor R6, and a second transistor Q2. The first color temperature signal output port PB15 is connected to one end of the first resistor R1. The other end of the first resistor R1 is connected to one end of the second resistor R2 and the first end of the first transistor Q1. The other end of the second resistor R2 is connected to the negative output terminal V- of the power supply module. The third end of the first transistor Q1 is connected to one end of the fifth resistor R5. The second end is connected to the other end of the second resistor R2 and the negative output terminal V- of the power supply module. The other end of the fifth resistor R5 is connected to the cathode of the first LED unit. The second color temperature signal output port PB14 is connected to one end of the third resistor R3. The other end of the third resistor R3 is connected to one end of the fourth resistor R4 and the first end of the second transistor Q2. The other end of the fourth resistor R4 is connected to the negative output terminal V- of the power supply module. The third end of the second transistor Q2 is connected to one end of the sixth resistor R6. The second end is connected to the other end of the fourth resistor R4 and the negative output terminal V- of the power supply module. The other end of the sixth resistor R6 is connected to the cathode of the second LED unit.

[0078] In one embodiment, the first adjustment unit further includes a first filter circuit, the second adjustment unit further includes a second filter circuit, and the lumen adjustment circuit includes a third filter circuit.

[0079] The first color temperature signal output port is connected to the first filter circuit, and the first analog voltage signal output by the first filter circuit is transmitted to one end of the first resistor.

[0080] The second color temperature signal output port is connected to the second filter circuit, and the second analog voltage signal output by the second filter circuit is transmitted to one end of the third resistor.

[0081] The lumen signal output port is connected to the third filter circuit, and the third filter circuit outputs a third analog voltage signal.

[0082] Please see Figure 6B This is a second circuit diagram of the lighting device for parameter adjustment based on NFC, as described in an embodiment of this application. Figure 6B As shown, in Figure 5 Based on the circuit structure, the first adjustment unit further includes a first filter circuit (R9, C2), and the second adjustment unit further includes a second filter circuit (R10, C3); the lumen adjustment circuit includes a third filter circuit (R11, C4). The first color temperature signal output port PB15 is connected to one end of the first filter circuit R9, and the first analog voltage signal ADC_CCT1 output by the first filter circuit is transmitted to one end of the first resistor R1. The second color temperature signal output port PB14 is connected to one end of the second filter circuit R10, and the second analog voltage signal ADC_CCT2 output by the second filter circuit is transmitted to one end of the third resistor R3. The lumen signal output port PA12 is connected to one end of the third filter circuit R11, and the third filter circuit outputs a third analog voltage signal ADC_LUMEN.

[0083] In one embodiment, both the first color temperature signal output port and the second color temperature signal output port are analog signal ports; the first adjustment unit includes a second resistor, a fifth resistor and a first transistor, and the second adjustment unit includes a fourth resistor, a sixth resistor and a second transistor.

[0084] The first color temperature signal output port is connected to one end of the second resistor and the first end of the first transistor, respectively. The third end of the first transistor is connected to one end of the fifth resistor. The second end of the first transistor and the other end of the second resistor are both connected to the negative output terminal of the power supply module. The other end of the fifth resistor is connected to the cathode of the first LED unit.

[0085] The second color temperature signal output port is connected to one end of the fourth resistor and the first end of the second transistor, respectively. The third end of the second transistor is connected to one end of the sixth resistor. The second end of the second transistor and the other end of the fourth resistor are both connected to the negative output terminal of the power supply module. The other end of the sixth resistor is connected to the cathode of the second LED unit.

[0086] Please see Figure 6C This is shown as a third circuit diagram of the lighting device for parameter adjustment based on NFC, as described in an embodiment of this application. Figure 6C As shown, both the first and second color temperature signal output ports are configured as analog signal ports via the MCU chip U14. The first adjustment unit includes a second resistor R2, a fifth resistor R5, and a first transistor Q1. The second adjustment unit includes a fourth resistor R4, a sixth resistor R6, and a second transistor Q2. The first color temperature signal output port PB15 outputs the first color temperature signal analog signal ANALOG_CCT1, which is connected to one end of the second resistor R2 and the first end of the first transistor Q1. The third end of the first transistor Q1 is connected to one end of the fifth resistor R5. The second end of the first transistor Q1 and the other end of the second resistor R2 are both connected to the negative output terminal V- of the power supply module. The other end of the fifth resistor R5 is connected to the cathode of the first LED unit. The second color temperature signal output port PB14 outputs the second color temperature signal analog signal ANALOG_CCT2, which is connected to one end of the fourth resistor R4 and the first end of the second transistor Q2. The third end of the second transistor Q2 is connected to one end of the sixth resistor R6. The second end of the second transistor Q2 and the other end of the fourth resistor R4 are both connected to the negative output terminal V- of the power supply module. The other end of the sixth resistor R6 is connected to the cathode of the second LED unit. In addition, the lumen signal output port outputs the lumen signal analog signal ANALOG_LUMEN.

[0087] In one embodiment, the parameter processing module includes an antenna and an NFC chip.

[0088] The NFC chip is connected to the antenna; the NFC chip is provided with a first color temperature signal output port, a second color temperature signal output port and a lumen signal output port; the first color temperature signal output port is connected to the first adjustment unit, the second color temperature signal output port is connected to the second adjustment unit, and the lumen signal output port is connected to the lumen adjustment circuit.

[0089] Please see Figure 6D This is shown as the fourth circuit diagram of the lighting device for parameter adjustment based on NFC as described in the embodiments of this application. Figure 6DAs shown, the parameter processing module 12 includes an antenna (ANTENNA) and an NFC chip (U21). The NFC chip (U21) is connected to the antenna; the NFC chip (U21) has a first color temperature signal output port (PWM2), a second color temperature signal output port (PWM0), and a lumen signal output port (PWM1); the first color temperature signal output port (PWM2) is connected to the first adjustment unit, the second color temperature signal output port (PWM0) is connected to the second adjustment unit, and the lumen signal output port (PWM1) is connected to the lumen adjustment circuit. Therefore, Figure 8 The proposed solution is simple and lower in cost. The NFC chip can perform the work of the MCU chip in one step. The NFC chip not only needs to store the lumen and color temperature data switched by the GUI, but also needs to use the data stored in the EEPROM to change the current ratio (K1:K2) of the two CCTs (2700K and 5000K) in the form of PWM, so as to obtain the five color temperatures required by the lamp: 2700K, 3000K, 3500K, 4000K, 5000K, or any color temperature between 2700K and 5000K.

[0090] In one embodiment, the color temperature adjustment circuit includes a first adjustment unit and a second adjustment unit, and the LED module includes a first LED unit and a second LED unit. Both the first LED unit and the second LED unit are composed of light-emitting diodes connected in series and parallel. The cathodes of the first LED unit and the second LED unit are connected to the negative output terminal of the power supply module through current-limiting resistors. The first adjustment unit is connected to the first color temperature signal output port and the anode of the first LED unit, respectively. The second adjustment unit is connected to the second color temperature signal output port and the anode of the second LED unit, respectively.

[0091] Please see Figure 6E This is shown as the fifth circuit diagram of the lighting device for parameter adjustment based on NFC as described in the embodiments of this application. Figure 6EAs shown, the color temperature adjustment circuit includes a first adjustment unit (U29, R17, Q6) and a second adjustment unit (U31, R18, Q5). The LED module includes a first LED unit and a second LED unit. The first LED unit (LED11_W1…LED1N_W1, LEDM1_W1…LEDMN_W1) and the second LED unit (LED11_C1…LED1N_C1, LEDM1_C1…LEDMN_C1) are both composed of individual light-emitting diodes connected in series and parallel. The cathode of the first LED unit is connected to the negative output terminal V- of the power supply module through a current-limiting resistor R21. The cathodes of the second LED units are all connected to the negative output terminal V- of the power supply module through a current-limiting resistor R22. The first adjustment unit is connected to the first color temperature signal output port PWM_CCT1 and the anode of the first LED unit, respectively. The second adjustment unit is connected to the second color temperature signal output port PWM_CCT2 and the anode of the second LED unit, respectively.

[0092] In one embodiment, both the first LED unit and the second LED unit are composed of individual light-emitting diodes connected in series and parallel.

[0093] like Figures 6A to 6E As shown, the first LED unit refers to the circuit unit formed by connecting LED11_W...LED1N_W and LEDM1_W...LEDMN_W in series and parallel; the second LED unit refers to the circuit unit formed by connecting LED11_C...LED1N_C and LEDM1_C...LEDMN_C in series and parallel.

[0094] In practical applications, each color temperature connection involves both series and parallel connections. For example, in the CC1 path, LED11_W and LED1N_W are connected in series, as are LEDM1_W and LEDMN_W. These two paths are then connected in parallel, with N>2 and M>1 normally. For Class 2 power supplies, because V+<60V must be considered, for example, if the selected LED has Vf=9V, then the number of LEDs in series, N<6. For non-Class 2 power supplies, there is no V+<60V limitation, and V+>100V is generally set, resulting in a lower output current. Theoretically, the more LEDs connected in parallel, the better, as the current distributed to each LED is lower. However, considering cost, the LED operating current is usually only slightly lower than the standard current required by the LED datasheet.

[0095] In practical applications, Figures 6A to 6EIn the circuit shown, each transistor can be either a MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) or a bipolar junction transistor (BJT). If it is a MOS transistor, the first terminal is the gate, the second terminal is the source, and the third terminal is the drain; if it is a BJT, the first terminal is the base, the second terminal is the emitter, and the third terminal is the collector.

[0096] In practical applications, according to the hardware circuit architecture of the luminaire device with parameter adjustment based on NFC, the entire functional implementation process includes: the luminaire has two CCT LED loads, such as 2700K and 5000K. The NFC-enabled luminaires are stored in the factory. A GUI (i.e., display operation unit 112) is installed on a computer, tablet, or mobile phone. The computer, tablet, or mobile phone is then wired (e.g., via USB) to an NFC reader (i.e., NFC identification unit 111). The NFC reader is located near the NFC chip area of ​​the parameter processing module 12 and is used to identify the NFC chip. The user selects the desired CCT and lumen levels through the GUI of the mobile device. The user clicks the CONNECT button on the GUI to identify and obtain the current CCT and lumen settings of the luminaire. The user selects the desired CCT and lumen levels and then clicks the WRITE button. The status box in the GUI displays "Success," indicating successful setting. The newly set CCT and lumen parameters are stored in the NFC chip. Each time the luminaire is powered on, the NFC chip actively transmits the setting parameters in the EEPROM to the MCU chip, and the MCU chip stores the setting parameters in its own EEPROM. The MCU chip adjusts the current ratio (K1:K2) of the two CCTs (2700K and 5000K) based on the CCT and lumen setting parameters stored in the EEPROM, thereby obtaining the five color temperatures required by the lamp: 2700K, 3000K, 3500K, 4000K, and 5000K. (Furthermore, by modifying the GUI interface to allow stepless adjustment of the CCT and lumen sliders, any color temperature between 2700K and 5000K can be achieved). For example, if the GUI interface selects 4000K, the MCU chip allocates a ratio of K1:K2 = 43:57 to the two CCTs (where the current ratio is fine-tuned based on the feedback voltage of the actual LEDs used), while keeping the total output current of the lamp unchanged, ultimately achieving the newly adjusted CCT and lumen effects.

[0097] Please see Figure 7 The diagram shows the principle flowchart of the NFC-based lamp parameter adjustment method described in this application embodiment. Figure 7As shown, this embodiment provides an NFC-based method for adjusting lighting parameters, applied to a lighting device that adjusts parameters based on NFC; including:

[0098] S71, Establish an NFC connection between the parameter setting module and the parameter processing module in the lighting device.

[0099] S72, retrieve color temperature parameter command and lumen parameter command.

[0100] S73, the current ratio of the first LED unit and the second LED unit in the LED module is determined according to the color temperature parameter instruction, and a first color temperature signal and a second color temperature signal are generated based on the current ratio; the first color temperature signal is applied to the first LED unit through a first adjustment circuit, and the second color temperature signal is applied to the second LED unit through a second adjustment circuit; the first LED unit and the second LED unit are treated as a single LED unit, embodying the color temperature adjustment effect. The color temperature adjustment effect is any one of the color temperatures of the first LED unit and the second LED unit, and includes both the color temperatures of the first LED unit and the second LED unit.

[0101] S74, determine the lumen signal according to the lumen parameter instruction; the lumen signal acts on the switching frequency or duty cycle of the power supply module to adjust the power supply output current, so as to determine the overall lumen adjustment effect of the LED.

[0102] Please see Figure 8 This is a schematic diagram of the first display operation interface of the NFC-based lamp parameter adjustment method described in this application embodiment. Figure 8 As shown, in the GUI interface, users only need to click the CONNECT button to confirm that the corresponding lamp is recognized. Then, they can click the hollow circle to select different lumen and color temperature levels. After setting the parameter levels, they can click the WRITE button. The State box will give feedback on whether it is a success or a failure.

[0103] Please see Figure 9 This is a schematic diagram of the second display operation interface of the NFC-based lamp parameter adjustment method described in this application embodiment. Figure 9 As shown, in the GUI interface, users only need to click the CONNECT button to confirm that the corresponding lamp is recognized, and then adjust the position of the Lumen and CCT sliders to select different lumen and color temperature levels. After setting the parameter levels, click the WRITE button, and the State box will give feedback on whether it is a success or a failure.

[0104] like Figure 8 and Figure 9The software settings interface shown in this application indicates that the installation software corresponding to the GUI display operation software will only be provided to relevant professionals, who will have the authority to modify lumens and color temperature. Unlike some applications on the market that use mobile phones to scan, allowing anyone with an NFC-enabled phone to set lamp parameters, this application's GUI prioritizes privacy and professional operation.

[0105] The scope of protection for the NFC-based lamp parameter adjustment method described in this application is not limited to the execution order of the steps listed in this embodiment. Any solution implemented by adding, subtracting, or replacing steps in the prior art based on the principles of this application is included within the scope of protection of this application.

[0106] The NFC-based lighting device described in this application can implement the NFC-based lighting parameter adjustment method described in this application. However, the implementation device of the NFC-based lighting parameter adjustment method described in this application includes, but is not limited to, the structure of the NFC-based lighting device listed in this embodiment. All structural modifications and substitutions of the prior art made in accordance with the principles of this application are included within the protection scope of this application.

[0107] In the several embodiments provided in this application, it should be understood that the disclosed apparatus or method can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules / units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or units may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of apparatuses or modules or units may be electrical, mechanical, or other forms.

[0108] The modules / units described as separate components may or may not be physically separate. The components shown as modules / units may or may not be physical modules; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules / units can be selected to achieve the objectives of the embodiments of this application, depending on actual needs. For example, the functional modules / units in the various embodiments of this application may be integrated into one processing module, or each module / unit may exist physically separately, or two or more modules / units may be integrated into one module / unit.

[0109] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0110] The descriptions of the processes or structures corresponding to the above figures each have their own emphasis. For parts of a process or structure that are not described in detail, please refer to the relevant descriptions of other processes or structures.

[0111] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A lighting device for parameter adjustment based on NFC, characterized in that, include: The parameter setting module includes an NFC identification unit and a display operation unit, wherein the NFC identification unit is connected to the display operation unit; The parameter processing module is connected to the parameter setting module via NFC; the parameter processing module includes a first color temperature signal output port, a second color temperature signal output port, and a lumen signal output port. The color temperature adjustment circuit is connected to the first color temperature signal output port and the second color temperature signal output port, respectively. A lumen adjustment circuit is connected to the lumen signal output port; The power supply module is connected to the lumen adjustment circuit; The LED module is connected to the color temperature adjustment circuit and the power supply module, respectively. In the color temperature adjustment circuit, the current ratio formed by the first color temperature signal at the first color temperature signal output port and the second color temperature signal at the second color temperature signal output port is used to determine the color temperature parameters of the LED module; the lumen signal at the lumen signal output port acts on the switching frequency or duty cycle of the power supply module to adjust the power supply output current, thereby determining the lumen parameters of the LED module.

2. The apparatus according to claim 1, characterized in that: The color temperature adjustment circuit includes a first adjustment unit and a second adjustment unit. The LED module includes a first LED unit and a second LED unit. Both the first LED unit and the second LED unit are composed of light-emitting diodes connected in series and parallel. The anodes of the first LED unit and the second LED unit are both connected to the positive output terminal of the power supply module. The first adjustment unit is connected to the first color temperature signal output port and the cathode of the first LED unit, respectively; the second adjustment unit is connected to the second color temperature signal output port and the cathode of the second LED unit, respectively.

3. The apparatus according to claim 2, characterized in that, The parameter processing module includes an antenna, an NFC chip, and an MCU chip; The NFC chip is connected to the antenna and the MCU chip respectively; the MCU chip is provided with a first color temperature signal output port, a second color temperature signal output port and a lumen signal output port.

4. The apparatus according to claim 3, characterized in that, Both the first color temperature signal output port and the second color temperature signal output port are digital signal ports; the first adjustment unit includes a first resistor, a second resistor, a fifth resistor and a first transistor, and the second adjustment unit includes a third resistor, a fourth resistor, a sixth resistor and a second transistor; The first color temperature signal output port is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and the first end of the first transistor, and the other end of the second resistor is connected to the negative output terminal of the power supply module; the third end of the first transistor is connected to one end of the fifth resistor, the second end of the first transistor is connected to the other end of the second resistor and the negative output terminal of the power supply module, and the other end of the fifth resistor is connected to the cathode of the first LED unit. The second color temperature signal output port is connected to one end of the third resistor, the other end of the third resistor is connected to one end of the fourth resistor and the first end of the second transistor, and the other end of the fourth resistor is connected to the negative output terminal of the power supply module; the third end of the second transistor is connected to one end of the sixth resistor, the second end of the transistor is connected to the other end of the fourth resistor and the negative output terminal of the power supply module, and the other end of the sixth resistor is connected to the cathode of the second LED unit.

5. The apparatus according to claim 4, characterized in that, The first adjustment unit further includes a first filter circuit, and the second adjustment unit further includes a second filter circuit; the lumen adjustment circuit includes a third filter circuit. The first color temperature signal output port is connected to the first filter circuit, and the first analog voltage signal output by the first filter circuit is transmitted to one end of the first resistor. The second color temperature signal output port is connected to the second filter circuit, and the second analog voltage signal output by the second filter circuit is transmitted to one end of the third resistor; The lumen signal output port is connected to the third filter circuit, and the third filter circuit outputs a third analog voltage signal.

6. The apparatus according to claim 3, characterized in that, Both the first color temperature signal output port and the second color temperature signal output port are analog signal ports; the first adjustment unit includes a second resistor, a fifth resistor and a first transistor, and the second adjustment unit includes a fourth resistor, a sixth resistor and a second transistor; The first color temperature signal output port is connected to one end of the second resistor and the first end of the first transistor, respectively. The third end of the first transistor is connected to one end of the fifth resistor. The second end of the first transistor and the other end of the second resistor are both connected to the negative output terminal of the power supply module. The other end of the fifth resistor is connected to the cathode of the first LED unit. The second color temperature signal output port is connected to one end of the fourth resistor and the first end of the second transistor, respectively. The third end of the second transistor is connected to one end of the sixth resistor. The second end of the second transistor and the other end of the fourth resistor are both connected to the negative output terminal of the power supply module. The other end of the sixth resistor is connected to the cathode of the second LED unit.

7. The apparatus according to claim 2, characterized in that, The parameter processing module includes an antenna and an NFC chip; The NFC chip is connected to the antenna; the NFC chip is provided with a first color temperature signal output port, a second color temperature signal output port and a lumen signal output port; the first color temperature signal output port is connected to the first adjustment unit, the second color temperature signal output port is connected to the second adjustment unit, and the lumen signal output port is connected to the lumen adjustment circuit.

8. The apparatus according to claim 1, characterized in that: The lumen adjustment circuit includes an opto-isolation unit and an LED driving unit in the power supply module; The opto-isolation unit is connected to the lumen signal output port and the LED driving unit, respectively. The output port of the LED driver unit is connected to the transformer of the power supply module. The power supply module changes the duty cycle or frequency of the switch operation per unit time according to the lumen signal of the lumen signal output port to change the output current, thereby realizing lumen adjustment.

9. The apparatus according to claim 1, characterized in that: The color temperature adjustment circuit includes a first adjustment unit and a second adjustment unit. The LED module includes a first LED unit and a second LED unit. Both the first LED unit and the second LED unit are composed of light-emitting diodes connected in series and parallel. The cathodes of the first LED unit and the second LED unit are connected to the negative output terminal of the power supply module through current-limiting resistors. The first adjustment unit is connected to the first color temperature signal output port and the anode of the first LED unit, respectively; the second adjustment unit is connected to the second color temperature signal output port and the anode of the second LED unit, respectively.

10. A method for adjusting lighting fixture parameters based on NFC, characterized in that, An NFC-based lighting device for parameter adjustment; comprising: Establish an NFC connection between the parameter setting module and the parameter processing module in the lighting device; Obtain color temperature parameter commands and lumen parameter commands; The current ratio of the first LED unit and the second LED unit in the LED module is determined according to the color temperature parameter instruction, and a first color temperature signal and a second color temperature signal are generated based on the current ratio; the first color temperature signal is applied to the first LED unit through a first adjustment circuit, and the second color temperature signal is applied to the second LED unit through a second adjustment circuit; the first LED unit and the second LED unit are treated as a single LED unit, reflecting the color temperature adjustment effect; wherein, the color temperature adjustment effect is any one of the color temperatures of the first LED unit and the second LED unit, and includes both the color temperatures of the first LED unit and the second LED unit; The lumen signal is determined according to the lumen parameter instruction; the lumen signal acts on the switching frequency or duty cycle of the power supply module to adjust the power supply output current, so as to determine the overall lumen adjustment effect of the LED.

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