Silicon controlled rectifier dimming and color adjustment method, silicon controlled rectifier dimming and color adjustment device and lamp

Abstract

The present application belongs to the technical field of lamps, and provides a thyristor dimming and color adjustment method, a thyristor dimming and color adjustment device, and a lamp. First, a chopping signal output by a thyristor is obtained, and the chopping signal is converted into a corresponding pulse width modulation signal, and then the duty cycle of the pulse width modulation signal is detected. When the duty cycle of the pulse width modulation signal changes, it is determined whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time. If so, the color of the light source module is switched, and the light source module is driven to light up with the switched color; if not, the luminous parameters of the light source module are adjusted according to the duty cycle of the changed pulse width modulation signal, so that multiple color switching control can be achieved through the adjustment of the thyristor, thereby solving the problem that multiple light color switching control cannot be achieved through the thyristor.

Description

Technical Field

[0001] The present application relates to the technical field of lamps, and in particular to a thyristor dimming and color adjustment method, a thyristor dimming and color adjustment device, and a lamp. Background Art

[0002] The thyristor dimmer has the function of controllable dimming, and thyristor dimming is currently a dimming method that is commonly used in incandescent lamps and energy-saving lamps. Its working principle is to reduce the effective value of the output voltage after the waveform of the input voltage is cut by the thyristor, thereby reducing the power of the ordinary load (resistance load).

[0003] However, currently, thyristors, as dimming tools, can only dim lamps or adjust the color temperature, and cannot achieve switching control of multiple light colors through thyristors. Summary of the invention

[0004] The purpose of the present application is to provide a lamp intensity control method, a control system and a lamp, which can avoid the problem of the brightness of the lamp being too dazzling or too dim causing discomfort to the user's eyes.

[0005] A first aspect of an embodiment of the present application provides a thyristor dimming and color adjustment method, the thyristor dimming and color adjustment method comprising:

[0006] Obtaining a chopping signal output by the thyristor, and converting the chopping signal into a corresponding pulse width modulation signal;

[0007] Detecting the duty cycle of the pulse width modulation signal, and when the duty cycle of the pulse width modulation signal changes, determining whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time;

[0008] If yes, the color of the light source module is switched, and the light source module is driven to light up with the switched color;

[0009] If not, the light emitting parameters of the light source module are adjusted according to the changed duty cycle of the pulse width modulation signal.

[0010] In one embodiment, after switching the color of the light source module and driving the light source module to light up with the switched color, the method further includes:

[0011] Detecting the duty cycle of the pulse width modulation signal, and when the duty cycle of the pulse width modulation signal changes, determining whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time;

[0012] If yes, the color of the light source module is switched, and the light source module is driven to light up with the switched color;

[0013] If not, the brightness of the light source module is adjusted according to the changed duty cycle of the pulse width modulation signal.

[0014] In one embodiment, adjusting the light emitting parameters of the light source module according to the changed duty cycle of the pulse width modulation signal includes:

[0015] Determining the working brightness value of the light source module according to the duty cycle of the changed pulse width modulation signal;

[0016] A light source driving signal is generated according to the brightness value to drive the light source module to light up at a brightness corresponding to the working brightness value.

[0017] In one embodiment, determining the brightness value of the light source module according to the changed duty cycle of the pulse width modulation signal includes:

[0018] According to the duty cycle of the changed pulse width modulation signal, a brightness value corresponding to the duty cycle is queried from a preset duty cycle and brightness value relationship table, and the brightness value is used as the working brightness value.

[0019] In one embodiment, if the duty cycle of the pulse width modulation signal does not change, the light source driving signal is output with the current duty cycle to drive the light source module to light up with the currently set color and brightness.

[0020] A second aspect of the present application also provides a thyristor dimming and color adjustment method, the thyristor dimming and color adjustment method comprising:

[0021] Obtaining a chopping signal output by the thyristor, and converting the chopping signal into a corresponding pulse width modulation signal;

[0022] Detecting the duty cycle of the pulse width modulation signal, and determining the luminous parameters of the light source module according to the duty cycle of the pulse width modulation signal, wherein the luminous parameters include luminous color and luminous brightness;

[0023] The light source module is driven to light up according to the light-emitting parameters.

[0024] The third aspect of the embodiment of the present application further provides a thyristor dimming and color adjustment device, the thyristor dimming and color adjustment device comprising:

[0025] A signal conversion unit, used for acquiring a chopping signal output by the thyristor, and converting the chopping signal into a corresponding pulse width modulation signal;

[0026] a detection unit, configured to determine whether the duty cycle of the pulse width modulation signal reaches a preset switching duty cycle within a preset threshold time after the duty cycle of the pulse width modulation signal changes;

[0027] A driving unit is used to switch the color of the light source module and drive the light source module to light up with the switched color when the duty cycle of the pulse width modulation signal reaches a preset switching duty cycle within a preset threshold time, and to adjust the brightness of the light source module according to the duty cycle of the changed pulse width modulation signal when the duty cycle of the pulse width modulation signal does not reach the preset switching duty cycle within the preset threshold time.

[0028] In one embodiment, the driving unit is also used to determine the operating brightness value of the light source module according to the duty cycle of the pulse width modulation signal after the change when the duty cycle of the pulse width modulation signal changes, and generate a light source driving signal according to the brightness value to drive the light source module to light up with a brightness corresponding to the operating brightness value.

[0029] In one embodiment, the driving unit is further configured to output a light source driving signal with a current duty cycle when the duty cycle of the pulse width modulation signal does not change, so as to drive the light source module to light up with a currently set color and brightness.

[0030] A fourth aspect of the embodiments of the present application further provides a lamp, comprising: a light source module; and a control unit, wherein the control unit is used to execute any of the thyristor dimming and color adjustment methods described above to drive the light source module to light up.

[0031] The embodiments of the present application provide a thyristor dimming and color adjustment method, a thyristor dimming and color adjustment device, and a lamp. First, a chopping signal output by the thyristor is obtained, and the chopping signal is converted into a corresponding pulse width modulation signal. Then, the duty cycle of the pulse width modulation signal is detected. When the duty cycle of the pulse width modulation signal changes, it is determined whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time. If so, the color of the light source module is switched, and the light source module is driven to light up with the switched color; if not, the luminous parameters of the light source module are adjusted according to the duty cycle of the changed pulse width modulation signal, so that multiple color switching control can be achieved through the adjustment of the thyristor, thereby solving the problem that multiple light color switching control cannot be achieved through the thyristor. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a process of a thyristor dimming and color adjustment method provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of a chopping waveform provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of a flow chart of another thyristor dimming and color adjustment method provided in an embodiment of the present application;

[0035] Figure 4A schematic flow chart of step S30 in the thyristor dimming and color adjustment method provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of a flow chart of another thyristor dimming and color adjustment method provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of the structure of a thyristor dimming and color adjustment device provided in an embodiment of the present application;

[0038] Figure 7 A schematic diagram of the structure of a driving circuit of a lamp provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0041] Currently, thyristor dimming lamps can only be dimmed or color temperature adjusted through thyristors, and it is impossible to achieve switching control of multiple light colors through thyristors.

[0042] In order to solve the above technical problems, the present application embodiment provides a thyristor dimming and color adjustment method, see Figure 1 As shown, the thyristor dimming and color adjustment method in this embodiment includes step S10, step S20 and step S30.

[0043] In step S10, a chopping signal output by a thyristor is obtained, and the chopping signal is converted into a corresponding pulse width modulation signal.

[0044] In this embodiment, the thyristor performs chopping processing on the input voltage waveform and converts the obtained chopping signal into a pulse width modulation signal.

[0045] In a specific application, the duty cycle of the pulse width modulation signal corresponds to the duty cycle of the chopping signal one-to-one, for example, the duty cycle of the pulse width modulation signal is the same as the duty cycle of the chopping signal.

[0046] See also Figure 2 As shown, the vertical axis is voltage, the horizontal axis is time, VSIN is the input voltage, V TDis the high level of the pulse width modulation signal after the conversion process, Tc is the time of the high level, Ts is the time of each cycle of the input voltage, and the duty cycle of the pulse width modulation signal is duty=Tc / Ts.

[0047] In step S20, the duty cycle of the pulse width modulation signal is detected, and when the duty cycle of the pulse width modulation signal changes, it is determined whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time.

[0048] In this embodiment, the phase angle of the thyristor is determined by detecting the duty cycle of the pulse width modulation signal. Usually, the duty cycle of the pulse width modulation signal corresponds to the phase angle of the thyristor. Therefore, the dimming and color adjustment mode of the light source module can be determined by the duty cycle of the pulse width modulation signal. The dimming and color adjustment mode of the light source module can include a dimming mode and a color adjustment mode. The dimming mode is to chop the input voltage based on the duty cycle of the pulse width modulation signal to adjust the brightness of the light source module. The color adjustment mode is to switch the light color when the pulse width modulation signal reaches a preset condition.

[0049] In one embodiment, the preset color switching threshold time can be a preset time T0 after the duty cycle of the pulse width modulation signal changes. The preset time T0 can include multiple consecutive pulse width modulation signal cycles, and the sum of the duty cycles of the pulse width modulation signal within the preset time T0 is calculated. If the sum of the duty cycles of the pulse width modulation signal within the preset time T0 is greater than the preset color switching duty cycle, the light color of the light source module is switched.

[0050] In step S30, if yes, the color of the light source module is switched, and the light source module is driven to light up with the switched color; if no, the light emitting parameters of the light source module are adjusted according to the duty cycle of the changed pulse width modulation signal.

[0051] In this embodiment, when the duty cycle of the pulse width modulation signal changes, it is determined whether the duty cycle of the pulse width modulation signal reaches the preset color switching duty cycle within the preset color threshold time. If the duty cycle of the pulse width modulation signal reaches the preset color switching duty cycle within the preset color threshold time, the color adjustment mode is entered. Each time the condition is met, that is, when the duty cycle of the pulse width modulation signal reaches the preset color switching duty cycle within the preset color threshold time, the color of the light source module is switched once, and the switching order can be switched according to the preset order of multiple light colors. For example, the light colors can be arranged in the order of red, green, blue, and white.

[0052] If the duty cycle of the pulse width modulation signal does not reach the preset color switching duty cycle within the preset color threshold time, the luminous parameters of the light source module are adjusted directly according to the duty cycle of the pulse width modulation signal after the change. For example, within the preset color threshold time T0, it is determined whether the duty cycle of the pulse width modulation signal is less than the preset color switching duty cycle x%. If so, the driving mode of the light source module enters the color adjustment mode, and the color of the light source module is switched once. If not, the corresponding light source driving signal is output according to the duty cycle of the pulse width modulation signal to adjust the luminous brightness of the light source module.

[0053] In one embodiment, the light emitting parameters of the light source module may also be adjusted according to the duty cycle of the changed pulse width modulation signal.

[0054] The luminous parameters of the light source module are determined by the duty cycle of the pulse width modulation signal, and the luminous parameters include luminous color and luminous brightness, wherein each duty cycle corresponds to a group of luminous parameters, and each group of luminous parameters includes a luminous color parameter and a luminous brightness parameter. Therefore, by detecting the duty cycle of the pulse width modulation signal, a group of luminous parameters can be selected according to its duty cycle to light up the light source module. Similarly, the light color switching control of the light source module can be achieved by using only thyristors.

[0055] In a specific application embodiment, each duty cycle range of the pulse width modulation signal can correspond to a set of luminous parameters. For example, the duty cycle of the pulse width modulation signal is duty, and each duty cycle range corresponds to a combination of color and brightness. When x1%>duty>0, the color of the light source module is set to C0, and its brightness is set to L0. When x2%>duty>x1%, the color of the light source module is set to C1, and its brightness is set to L1. When x3%>duty>x2%, the color of the light source module is set to C2, and its brightness is set to L2. And so on. When 100%>duty>xn%, the color of the light source module is set to Cn, and its brightness is set to Ln. Among them, colors such as C1, C2, ... Cn can be repeated or expressed as n different colors, and brightnesses such as L1, L2, ... Ln can be repeated or expressed as n different brightnesses.

[0056] In one embodiment, see Figure 3 As shown, after switching the color of the light source module and driving the light source module to light up with the switched color, the method further includes step S41 and step S42.

[0057] In step S41, the duty cycle of the pulse width modulation signal is detected, and when the duty cycle of the pulse width modulation signal changes, it is determined whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time.

[0058] In this embodiment, if the duty cycle of the pulse width modulation signal reaches the preset color switching duty cycle within the preset color switching threshold time, the driving mode of the light source module enters the color adjustment mode. After the driving mode of the light source module enters the color adjustment mode, the light color of the light source module is switched to the next light color, and the steps of detecting and judging the duty cycle of the pulse width modulation signal are performed again, and it is judged whether the duty cycle of the pulse width modulation signal reaches the preset color switching duty cycle again within the preset color switching threshold time, and so on, until the duty cycle of the pulse width modulation signal is less than the preset color switching duty cycle within the preset color switching threshold time.

[0059] In step S42, if yes, the color of the light source module is switched, and the light source module is driven to light up with the switched color; if no, the brightness of the light source module is adjusted according to the duty cycle of the changed pulse width modulation signal.

[0060] In this embodiment, if the duty cycle of the PWM signal reaches the preset color switching duty cycle again within the preset color switching threshold time after the light source module switches the light color once, the light color of the light source module switches to the next light color.

[0061] In one embodiment, see Figure 4 As shown, in step S30, the light emitting parameters of the light source module are adjusted according to the changed duty cycle of the pulse width modulation signal, including step S31 and step S32.

[0062] In step S31, the operating brightness value of the light source module is determined according to the duty cycle of the changed pulse width modulation signal.

[0063] In step S32, a light source driving signal is generated according to the brightness value to drive the light source module to light up at a brightness corresponding to the working brightness value.

[0064] In this embodiment, if the duty cycle of the pulse width modulation signal is less than the preset color switching duty cycle within the preset color switching threshold time, the driving mode of the light source module enters the dimming mode, and the working brightness value of the light source module can be determined by the changed duty cycle of the pulse width modulation signal, and then a corresponding light source driving signal can be generated according to the brightness value to drive the light source module to light up with the brightness corresponding to the working brightness value.

[0065] In one embodiment, in step S31, the brightness value of the light source module is determined according to the duty cycle of the changed pulse width modulation signal, including: querying the brightness value corresponding to the duty cycle from a preset duty cycle and brightness value relationship table according to the duty cycle of the changed pulse width modulation signal, and using the brightness value as the working brightness value.

[0066] In the preset duty cycle and brightness value relationship table, the duty cycle of the pulse width modulation signal corresponds one to one with the brightness value of the light source module. According to the duty cycle of the changed pulse width modulation signal, the brightness value corresponding to the duty cycle is queried from the preset duty cycle and brightness value relationship table, and the brightness value is used as the working brightness value of the light source module, thereby realizing the brightness adjustment of the light source module.

[0067] In one embodiment, if the duty cycle of the pulse width modulation signal does not change, the light source driving signal is output with the current duty cycle to drive the light source module to light up with the currently set color and brightness.

[0068] The present application also provides a thyristor dimming and color adjustment method, wherein Figure 5 As shown, the thyristor dimming and color adjustment method includes step S61, step S62 and step S63.

[0069] In step S61, a chopping signal output by a thyristor is obtained, and the chopping signal is converted into a corresponding pulse width modulation signal.

[0070] In this embodiment, the thyristor performs chopping processing on the input voltage waveform and converts the obtained chopping signal into a pulse width modulation signal.

[0071] In step S62, the duty cycle of the pulse width modulation signal is detected, and the luminous parameters of the light source module are determined according to the duty cycle of the pulse width modulation signal, wherein the luminous parameters include luminous color and luminous brightness.

[0072] In this embodiment, the luminous parameters of the light source module are determined by the duty cycle of the pulse width modulation signal, and the luminous parameters include luminous color and luminous brightness, wherein each duty cycle corresponds to a group of luminous parameters, and each group of luminous parameters includes a luminous color parameter and a luminous brightness parameter. Therefore, by detecting the duty cycle of the pulse width modulation signal, a group of luminous parameters can be selected according to its duty cycle to light up the light source module. Similarly, the light color switching control of the light source module can be achieved by only using thyristors.

[0073] In step S63, the light source module is driven to light up according to the light-emitting parameters.

[0074] In a specific application embodiment, each duty cycle range of the pulse width modulation signal can correspond to a set of luminous parameters. For example, the duty cycle of the pulse width modulation signal is duty, and each duty cycle range corresponds to a combination of color and brightness. When x1%>duty>0, the color of the light source module is set to C0, and its brightness is set to L0. When x2%>duty>x1%, the color of the light source module is set to C1, and its brightness is set to L1. When x3%>duty>x2%, the color of the light source module is set to C2, and its brightness is set to L2. And so on. When 100%>duty>xn%, the color of the light source module is set to Cn, and its brightness is set to Ln. Among them, colors such as C1, C2, ... Cn can be repeated or expressed as n different colors, and brightnesses such as L1, L2, ... Ln can be repeated or expressed as n different brightnesses.

[0075] The embodiment of the present application further provides a thyristor dimming and color adjustment device 40 , which includes: a signal conversion unit 41 , a detection unit 42 and a driving unit 43 .

[0076] Specifically, the signal conversion unit 41 is used to obtain the chopping signal output by the thyristor and convert the chopping signal into a corresponding pulse width modulation signal; the detection unit 42 is used to determine whether the duty cycle of the pulse width modulation signal reaches a preset switching duty cycle within a preset threshold time after the duty cycle of the pulse width modulation signal changes; the driving unit 43 is used to switch the color of the light source module when the duty cycle of the pulse width modulation signal reaches a preset switching duty cycle within a preset threshold time, and drive the light source module to light up with the switched color, and when the duty cycle of the pulse width modulation signal does not reach the preset switching duty cycle within the preset threshold time, adjust the brightness of the light source module according to the duty cycle of the changed pulse width modulation signal.

[0077] In this embodiment, the thyristor performs chopping processing on the input voltage waveform, the signal conversion unit 41 converts the obtained chopping signal into a pulse width modulation signal, and the detection unit 42 determines the phase angle of the thyristor by detecting the duty cycle of the pulse width modulation signal. Usually, the duty cycle of the pulse width modulation signal corresponds to the phase angle of the thyristor. Therefore, the dimming and color adjustment mode of the light source module can be determined by the duty cycle of the pulse width modulation signal. The dimming and color adjustment mode of the light source module can include a dimming mode and a color adjustment mode. The dimming mode is to chop the input voltage based on the duty cycle of the pulse width modulation signal to adjust the brightness of the light source module. The color adjustment mode is to switch the light color when the pulse width modulation signal reaches a preset condition.

[0078] When the duty cycle of the pulse width modulation signal changes, the driving unit 43 determines whether the duty cycle of the pulse width modulation signal reaches the preset color switching duty cycle within the preset color threshold time. If the duty cycle of the pulse width modulation signal reaches the preset color switching duty cycle within the preset color threshold time, the color adjustment mode is entered. Each time the condition is met, that is, when the duty cycle of the pulse width modulation signal reaches the preset color switching duty cycle within the preset color threshold time, the color of the light source module is switched once, and the switching order can be switched according to the preset sequence of multiple light colors. If the duty cycle of the pulse width modulation signal does not reach the preset color switching duty cycle within the preset color threshold time, the luminous parameters of the light source module are directly adjusted according to the duty cycle of the changed pulse width modulation signal. For example, within the preset color threshold time T0, it is determined whether the duty cycle of the pulse width modulation signal is less than the preset color switching duty cycle x%. If so, the driving mode of the light source module enters the color adjustment mode, and the color of the light source module is switched once. If not, the corresponding light source driving signal is output according to the duty cycle of the pulse width modulation signal to adjust the luminous brightness of the light source module.

[0079] In one embodiment, the driving unit 43 is also used to determine the operating brightness value of the light source module according to the duty cycle of the pulse width modulation signal after the change when the duty cycle of the pulse width modulation signal changes, and generate a light source driving signal according to the brightness value to drive the light source module to light up with a brightness corresponding to the operating brightness value.

[0080] In one embodiment, the driving unit 43 is further configured to output a light source driving signal with a current duty cycle when the duty cycle of the pulse width modulation signal does not change, so as to drive the light source module to light up with a currently set color and brightness.

[0081] In this embodiment, the driving unit 43 drives the light source module to light up in a manner that can be based on the thyristor dimming and color adjustment method in any of the above embodiments.

[0082] An embodiment of the present application further provides a lamp, comprising: a light source module; and a control unit, wherein the control unit is configured to execute any of the above-mentioned thyristor dimming and color adjustment methods to drive the light source module to light up.

[0083] In one embodiment, Figure 7 The circuit structure diagram of the driving circuit of the lamp provided in the embodiment of the present application is shown in FIG. Figure 7 As shown, the driving circuit includes: a thyristor dimmer 71, a rectifier circuit 72, a filter circuit 73,

[0084] The thyristor dimmer 71 is used to receive the alternating current and chop the alternating current by adjusting its phase angle.

[0085] The rectifier circuit 72 is used to rectify the chopped voltage signal. Specifically, the rectifier circuit 72 may be a rectifier bridge.

[0086] The filter circuit 73 is used to filter the voltage signal rectified by the rectifier circuit 72. Specifically, the filter circuit 73 may be a π-shaped filter circuit.

[0087] The constant voltage control circuit 74 is used to output a constant voltage driving signal according to the voltage signal output by the filter circuit 73. In a specific application, the constant voltage control circuit 74 includes but is not limited to linear dimming, and can also be a buck / buck-boost circuit.

[0088] The linear dimming circuit 75 outputs a light source driving signal according to the control signal provided by the main control circuit to drive the light source assembly 76 to light up. The linear dimming circuit 75 includes but is not limited to linear dimming, and can also be a buck / buck-boost circuit.

[0089] The detection circuit 77 is used to convert the thyristor chopping signal into a pulse width modulation signal with the same duty cycle.

[0090] The main control circuit 78 is used to execute the steps of the thyristor dimming and color adjustment method described in any of the above embodiments.

[0091] The embodiments of the present application provide a thyristor dimming and color adjustment method, a thyristor dimming and color adjustment device, and a lamp. First, a chopping signal output by the thyristor is obtained, and the chopping signal is converted into a corresponding pulse width modulation signal. Then, the duty cycle of the pulse width modulation signal is detected. When the duty cycle of the pulse width modulation signal changes, it is determined whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time. If so, the color of the light source module is switched, and the light source module is driven to light up with the switched color; if not, the luminous parameters of the light source module are adjusted according to the duty cycle of the changed pulse width modulation signal, so that multiple color switching control can be achieved through the adjustment of the thyristor, thereby solving the problem that multiple light color switching control cannot be achieved through the thyristor.

[0092] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0093] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0094] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0095] In the embodiments provided in the present application, it should be understood that the disclosed devices / lamps and methods can be implemented in other ways. For example, the device / lamps embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0096] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0097] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0098] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0099] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A thyristor dimming and color adjustment method, characterized in that: The thyristor dimming and color adjustment method comprises: Obtaining a chopping signal output by the thyristor, and converting the chopping signal into a corresponding pulse width modulation signal; Detecting the duty cycle of the pulse width modulation signal, and when the duty cycle of the pulse width modulation signal changes, determining whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time; If yes, the color of the light source module is switched, and the light source module is driven to light up with the switched color; If not, the light emitting parameters of the light source module are adjusted according to the changed duty cycle of the pulse width modulation signal.

2. The thyristor dimming and color adjustment method according to claim 1, characterized in that: After the color of the light source module is switched and the light source module is driven to light up with the switched color, the method further includes: Detecting the duty cycle of the pulse width modulation signal, and when the duty cycle of the pulse width modulation signal changes, determining whether the duty cycle of the pulse width modulation signal reaches a preset color switching duty cycle within a preset color switching threshold time; If yes, the color of the light source module is switched, and the light source module is driven to light up with the switched color; If not, the brightness of the light source module is adjusted according to the changed duty cycle of the pulse width modulation signal.

3. The thyristor dimming and color adjustment method according to claim 1, characterized in that: The step of adjusting the light emitting parameters of the light source module according to the changed duty cycle of the pulse width modulation signal comprises: Determining the working brightness value of the light source module according to the duty cycle of the changed pulse width modulation signal; A light source driving signal is generated according to the brightness value to drive the light source module to light up at a brightness corresponding to the working brightness value.

4. The thyristor dimming and color adjustment method according to claim 3, characterized in that: Determining the brightness value of the light source module according to the duty cycle of the changed pulse width modulation signal includes: According to the duty cycle of the changed pulse width modulation signal, a brightness value corresponding to the duty cycle is queried from a preset duty cycle and brightness value relationship table, and the brightness value is used as the working brightness value.

5. The thyristor dimming and color adjustment method according to claim 1, characterized in that: If the duty cycle of the pulse width modulation signal does not change, the light source driving signal is output with the current duty cycle to drive the light source module to light up with the currently set color and brightness.

6. A thyristor dimming and color adjustment device, characterized in that: The thyristor dimming and color adjustment device comprises: A signal conversion unit, used for acquiring a chopping signal output by the thyristor, and converting the chopping signal into a corresponding pulse width modulation signal; a detection unit, configured to determine whether the duty cycle of the pulse width modulation signal reaches a preset switching duty cycle within a preset threshold time after the duty cycle of the pulse width modulation signal changes; A driving unit is used to switch the color of the light source module and drive the light source module to light up with the switched color when the duty cycle of the pulse width modulation signal reaches a preset switching duty cycle within a preset threshold time, and to adjust the brightness of the light source module according to the duty cycle of the changed pulse width modulation signal when the duty cycle of the pulse width modulation signal does not reach the preset switching duty cycle within the preset threshold time.

7. The thyristor dimming and color adjustment device according to claim 6, characterized in that: The driving unit is also used to determine the operating brightness value of the light source module according to the changed duty cycle of the pulse width modulation signal when the duty cycle of the pulse width modulation signal changes, and generate a light source driving signal according to the brightness value to drive the light source module to light up at a brightness corresponding to the operating brightness value.

8. The thyristor dimming and color adjustment device according to claim 6, characterized in that: The driving unit is further configured to output a light source driving signal with a current duty cycle when the duty cycle of the pulse width modulation signal does not change, so as to drive the light source module to light up with a currently set color and brightness.

9. A lamp, characterized in that: The lamp comprises: a light source module; and a control unit, wherein the control unit is used to execute the thyristor dimming and color adjustment method according to any one of claims 1 to 5 to drive the light source module to light up.

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