Intelligent lamp and color cutting detection circuit and color cutting detection method thereof

Abstract

The present application belongs to the field of electronic circuit technology, and relates to an intelligent lamp and its color cutting detection circuit and color cutting detection method, including a rectifier and filter circuit, a main power circuit, a power supply circuit, a wall switch detection circuit and a control circuit. After rectifying and filtering the AC signal output by the power supply circuit, a DC signal is output, and the state of the wall switch is detected according to the level of the DC signal received within a preset time period, and then the DC signal is converted into voltage to obtain the state of the wall switch to output a feedback signal, and finally the power of the DC signal is controlled according to the feedback signal, and the light-emitting module is controlled to emit light or turn off, and the color temperature of the light-emitting module is switched. Therefore, the above detection method is used to correctly judge whether the wall switch is truly turned on and off, so as to avoid false detection, thereby eliminating the false triggering caused by the change of the detection waveform, and achieving the effect of switching the color temperature of the light-emitting module.

Description

Technical Field

[0001] The present application belongs to the field of electronic circuit technology, and in particular relates to an intelligent lamp and a color cutting detection circuit and a color cutting detection method thereof. Background Art

[0002] At present, if the products (including lamps) on the market that are used for color-cutting switches are connected to thyristor dimmers, the detection waveform of the switch will change, resulting in false triggering of the color-cutting.

[0003] Therefore, the existing intelligent lamps have the problem of false triggering of color cutting due to the change of the detection waveform of the switch caused by the dimmer. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a smart lamp and its color cutting detection circuit and color cutting detection method, aiming to solve the problem of false triggering of color cutting in existing smart lamps due to changes in the detection waveform of the power on and off caused by the dimmer.

[0005] A first aspect of an embodiment of the present application provides a color cutting detection circuit for an intelligent lamp, comprising:

[0006] A rectifier and filter circuit is connected to the power supply circuit and is configured to perform rectification and filtering on the AC signal output by the power supply circuit and then output a DC signal;

[0007] A main power circuit, connected to the rectification and filtering circuit, configured to perform power control on the DC signal according to the feedback signal, and control the light-emitting module to emit light or turn off, and perform color temperature switching on the light-emitting module;

[0008] a power supply circuit, connected to the main power circuit and configured to perform voltage conversion on the DC signal;

[0009] a wall switch detection circuit, connected to the rectification and filtering circuit, and configured to detect the state of the wall switch according to the level of the DC power signal received within a preset time period; and

[0010] The control circuit is connected to the main power circuit, the power supply circuit and the wall switch detection circuit, and is configured to receive the DC signal after voltage conversion and obtain the state of the wall switch to output the feedback signal to the main power circuit.

[0011] Preferably, the rectification and filtering circuit comprises:

[0012] a rectifier circuit, connected to the power circuit, and configured to rectify the alternating current signal output by the power circuit; and

[0013] The filter subcircuit is connected to the rectifier subcircuit and is configured to filter the rectified AC signal to output the DC signal.

[0014] Preferably, the rectifier circuit is implemented by a rectifier bridge.

[0015] Preferably, the filtering subcircuit comprises:

[0016] A first diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor and a first inductor;

[0017] The anode of the first diode is connected to the rectifier circuit, the cathode of the first diode, the first end of the first resistor, the first end of the first inductor and the first end of the first capacitor are connected in common, the second end of the first resistor, the second end of the first inductor, the first end of the second capacitor and the first end of the third capacitor are connected in common and connected to the main power circuit, the second end of the third capacitor, the first end of the second resistor, the first end of the third resistor and the first end of the fourth resistor are connected in common, and the second end of the first capacitor, the second end of the second capacitor, the second end of the second resistor, the second end of the third resistor and the second end of the fourth resistor are connected in common.

[0018] Preferably, the main power circuit comprises:

[0019] A second diode, a second voltage-stabilizing diode, a first switch tube, a second switch tube, a third switch tube, a second inductor, a first electrolytic capacitor, a fourth electrolytic capacitor, a constant current control chip, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fourth capacitor, a fifth capacitor, a sixth capacitor, and a tenth capacitor;

[0020] The first end of the second inductor and the first end of the sixth capacitor are connected to the rectifier and filter circuit, the second end of the second inductor is connected to the anode of the second diode, the cathode of the second diode, the first end of the ninth resistor, the first end of the sixth capacitor, the first end of the first electrolytic capacitor, the first end of the eleventh resistor, the cathode of the second voltage-stabilizing diode and the output end of the third switch tube are connected together, the input end of the third switch tube and the first end of the tenth capacitor are connected to the input end of the light-emitting module, the anode of the second voltage-stabilizing diode is connected together with the controlled end of the third switch tube and the second end of the tenth capacitor, the output end of the first switch tube and the output end of the second switch tube are connected to the output end of the light-emitting module, the controlled end of the first switch tube is connected together with the first end of the thirteenth resistor and connected to the control circuit, and the controlled end of the second switch tube is connected together with the first end of the fourteenth resistor and connected to the control The circuit is connected, the second end of the ninth resistor is connected to the first end of the tenth resistor, the second end of the tenth resistor is connected with the first end of the fourth electrolytic capacitor and the first end of the fifth capacitor, the first end of the eighth resistor is connected to the clamping end of the constant current control chip, the first end of the fifth resistor and the first end of the sixth resistor are connected to the control end of the constant current control chip, the first end of the seventh resistor is connected to the serial port end of the constant current control chip, the second end of the seventh resistor is connected to the first end of the fourth capacitor, the second end of the fifth resistor, the second end of the sixth resistor, the second end of the fourth capacitor, the second end of the fourth electrolytic capacitor, the second end of the fifth capacitor, the second end of the eighth resistor, the second end of the first electrolytic capacitor, the second end of the twelfth resistor, the second end of the thirteenth resistor, the second end of the fourteenth resistor, the input end of the first switch tube and the input end of the second switch tube are grounded.

[0021] Preferably, the power supply circuit comprises:

[0022] A third diode, a fourth diode, a fifth diode, a third inductor, a seventh capacitor, an eighth capacitor, a second electrolytic capacitor, a third electrolytic capacitor, a fifteenth resistor, a sixteenth resistor and a transformer chip;

[0023] The anode of the third diode is connected to the main power circuit, the cathode of the third diode is connected to the first end of the second electrolytic capacitor and the input end of the transformer chip, the control end of the transformer chip is connected to the first end of the fifteenth resistor, the voltage end of the transformer chip is connected to the first end of the seventh capacitor and the cathode of the fifth diode, the second end of the fifteenth resistor, the first end of the third inductor, the second end of the seventh capacitor and the cathode of the fourth diode are connected together, the second end of the third inductor, the anode of the fifth diode, the first end of the eighth capacitor, the first end of the third electrolytic capacitor and the first end of the sixteenth resistor are connected together and connected to a reference voltage, and the second end of the second electrolytic capacitor, the anode of the fourth diode, the second end of the eighth capacitor, the second end of the third electrolytic capacitor and the second end of the sixteenth resistor are grounded.

[0024] Preferably, the wall switch detection circuit comprises:

[0025] a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a ninth capacitor and a first voltage zener diode;

[0026] The first end of the seventeenth resistor is connected to the rectifier and filter circuit, the second end of the seventeenth resistor is connected to the first end of the eighteenth resistor, the second end of the eighteenth resistor is connected to the first end of the nineteenth resistor, the first end of the ninth capacitor is connected to the cathode of the first voltage-regulating diode and is connected to the control circuit, and the second end of the ninth capacitor is connected to the second end of the nineteenth resistor and the anode of the first voltage-regulating diode.

[0027] Preferably, the control circuit comprises a single chip microcomputer.

[0028] A second aspect of the embodiments of the present application provides a smart lamp, including:

[0029] Light-emitting module;

[0030] The color cutting detection circuit as described above; and

[0031] The power supply circuit is configured to output an alternating current signal to power the color cutting detection circuit.

[0032] A third aspect of the embodiments of the present application provides a color cutting detection method for a smart lamp, comprising:

[0033] After rectifying and filtering the AC signal output by the power supply circuit, a DC signal is output;

[0034] Detecting the state of the wall switch according to the level of the DC signal received within a preset time period;

[0035] Performing voltage conversion on the DC signal;

[0036] receiving the DC signal after voltage conversion, and obtaining the state of the wall switch to output a feedback signal;

[0037] The power of the direct current signal is controlled according to the feedback signal, and the light-emitting module is controlled to emit light or extinguish, and the color temperature of the light-emitting module is switched.

[0038] The above-mentioned intelligent lamp and its color cutting detection circuit and color cutting detection method include a rectifier filter circuit, a main power circuit, a power supply circuit, a wall switch detection circuit and a control circuit. After rectifying and filtering the AC signal output by the power supply circuit, a DC signal is output, and the state of the wall switch is detected according to the level of the DC signal received within a preset time period. Then, the DC signal is converted into voltage, and the state of the wall switch is obtained to output a feedback signal. Finally, the power of the DC signal is controlled according to the feedback signal, and the light-emitting module is controlled to emit light or extinguish, and the color temperature of the light-emitting module is switched. Therefore, the above-mentioned detection method is used to correctly judge whether the wall switch is truly turned on and off, so as to avoid false detection, thereby eliminating the false triggering caused by the change of the detection waveform, and achieving the effect of switching the color temperature of the light-emitting module, which solves the problem that the detection waveform of the switch changes due to the dimmer in the existing intelligent lamps, thereby causing false triggering of color cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A schematic diagram of a color cutting detection circuit of an intelligent lamp provided in one aspect of the present application;

[0041] Figure 2 For the corresponding Figure 1 A schematic diagram of the specific structure of a color cutting detection circuit of an intelligent lamp;

[0042] Figure 3 For the corresponding Figure 1 An example circuit diagram of a color cutting detection circuit of an intelligent lamp;

[0043] Figure 4 A schematic diagram of a wall switch detection waveform of a color cutting detection circuit of a smart lamp provided in this application;

[0044] Figure 5 A schematic diagram of a wall switch detection principle of a color cutting detection circuit of a smart lamp provided in an embodiment of the present application;

[0045] Figure 6 A schematic diagram of a wall switch detection principle of a color cutting detection circuit of a smart lamp provided in another embodiment of the present application;

[0046] Figure 7 Another aspect of the present application provides a flowchart of the steps of a color cutting detection method for an intelligent lamp. DETAILED DESCRIPTION

[0047] 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.

[0048] See also Figure 1 On one hand, the present application provides a structure of a color cutting detection circuit of an intelligent lamp. For the sake of convenience, only the part related to the present embodiment is shown, which is described in detail as follows:

[0049] The color cutting detection circuit of the intelligent lamp comprises a rectifier and filter circuit 101 , a main power circuit 102 , a power supply circuit 103 , a wall switch detection circuit 104 and a control circuit 105 .

[0050] The rectifier and filter circuit 101 is connected to the power supply circuit 106 , and is configured to output a direct current signal after rectifying and filtering the alternating current signal output by the power supply circuit 106 .

[0051] Specifically, since the power supply circuit 106 outputs an AC signal, the rectifier and filter circuit 101 is set to first rectify the AC signal and convert it into a DC signal, for example: the input sinusoidal 50 / 60HZ voltage is converted into a 100 / 120HZ voltage waveform without a negative half cycle; and the specific frequency signal in the DC signal is filtered out to play a role in resisting signal interference.

[0052] The main power circuit 102 is connected to the rectifier and filter circuit 101, and is configured to perform power control on the DC signal according to the feedback signal, and control the light-emitting module to emit light or turn off, and switch the color temperature of the light-emitting module.

[0053] Specifically, the main purpose of the main power circuit 102 is to control the light-emitting module to emit light or extinguish light, and to switch the color temperature of the light-emitting module when the light-emitting module emits light. The light-emitting module is implemented by an LED lamp tube.

[0054] The power supply circuit 103 is connected to the main power circuit 102 and is configured to perform voltage conversion on the DC power signal.

[0055] Specifically, the power supply circuit 103 is used to perform voltage conversion on the DC signal, including step-up conversion and step-down conversion, in order to convert the received DC signal into an electrical signal of a preset voltage value to power the control circuit 105. Of course, the preset voltage value can be set according to actual needs.

[0056] The wall switch detection circuit 104 is connected to the rectification and filtering circuit 101 and is configured to detect the state of the wall switch according to the level of the DC signal received within a preset time period.

[0057] Specifically, the state of the wall switch includes on and off, and the wall switch detection circuit 104 determines whether the state of the wall switch is on or off according to the level of the DC signal received within a preset time period. Of course, in specific applications, the wall switch can also be implemented by a dial switch, which is not limited here.

[0058] The control circuit 105 is connected to the main power circuit 102 , the power supply circuit 103 and the wall switch detection circuit 104 , and is configured to receive the DC signal after voltage conversion and obtain the state of the wall switch to output a feedback signal to the main power circuit 102 .

[0059] Specifically, the control circuit 105 is used to obtain the state of the wall switch through the wall switch detection circuit 104 and output a feedback signal to the main power circuit 102 to switch the color temperature of the LED lamp tube through the main power circuit 102 .

[0060] Therefore, by using the above-mentioned color cutting detection circuit, it is possible to correctly determine whether the wall switch is actually turned on or off, avoid false detection, and achieve the effect of color temperature switching of the light-emitting module.

[0061] like Figure 2 As shown, in the above-mentioned color cutting detection circuit of an intelligent lamp, the rectifier and filter circuit 101 includes a rectifier subcircuit 1011 and a filter subcircuit 1012 .

[0062] The rectifier circuit 1011 is connected to the power circuit 106 and is configured to rectify the AC power signal output by the power circuit 106 .

[0063] The filtering sub-circuit 1012 is connected to the rectifying sub-circuit 1011 and is configured to perform filtering on the rectified AC signal to output a DC signal.

[0064] Exemplarily, the rectifier circuit 1011 first converts the input 50 / 60HZ sinusoidal voltage into a 100 / 120HZ voltage waveform without a negative half cycle, and the filter subcircuit 1012 then filters out the specific frequency signal in the 100 / 120HZ voltage waveform without a negative half cycle to play a role in resisting signal interference.

[0065] Figure 3 Shows the corresponding Figure 1 An example circuit of a color cutting detection circuit of an intelligent lamp is shown. For the sake of convenience, only the part related to this embodiment is shown, which is described in detail as follows:

[0066] As an embodiment of the present application, the rectifier circuit 1011 is implemented by a rectifier bridge BD1, which includes a full-bridge rectifier or a half-bridge rectifier.

[0067] As an embodiment of the present application, the filtering subcircuit includes a first diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a first inductor L1.

[0068] The anode of the first diode D1 is connected to the rectifier circuit 1011, the cathode of the first diode D1, the first end of the first resistor R1, the first end of the first inductor L1 and the first end of the first capacitor C1 are connected in common, the second end of the first resistor R1, the second end of the first inductor L1, the first end of the second capacitor C2 and the first end of the third capacitor C3 are connected in common and connected to the main power circuit 102, the second end of the third capacitor C3, the first end of the second resistor R2, the first end of the third resistor R3 and the first end of the fourth resistor R4 are connected in common, the second end of the first capacitor C1, the second end of the second capacitor C2, the second end of the second resistor R2, the second end of the third resistor R3 and the second end of the fourth resistor R4 are connected in common.

[0069] As an embodiment of the present application, the above-mentioned main power circuit 102 includes a second diode D2, a second voltage regulator diode ZD2, a first switch tube Q1, a second switch tube Q2, a third switch tube Q3, a second inductor L2, a first electrolytic capacitor EC1, a fourth electrolytic capacitor EC4, a constant current control chip U1, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6 and a tenth capacitor C10.

[0070] The first end of the second inductor L2 and the first end of the sixth capacitor C6 are connected to the rectifier filter circuit 101, the second end of the second inductor L2 is connected to the anode of the second diode D2, the cathode of the second diode D2, the first end of the ninth resistor R9, the first end of the sixth capacitor C6, the first end of the first electrolytic capacitor EC1, the first end of the eleventh resistor R11, the cathode of the second voltage regulator diode ZD2 and the output end of the third switch tube Q3 are connected in common, and the input end of the third switch tube Q3 and the first end of the tenth capacitor C10 are connected to the light emitting module ( Figure 3 The input end of the first switching tube Q1 is represented by a diode LEDA and a diode LEDB, the anode of the second voltage stabilizing diode ZD2 is connected to the controlled end of the third switching tube Q3 and the second end of the tenth capacitor C10, the output end of the first switching tube Q1 and the output end of the second switching tube Q2 are connected to the output end of the light-emitting module, the controlled end of the first switching tube Q1 is connected to the first end of the thirteenth resistor R13 and is connected to the control circuit 105, the controlled end of the second switching tube Q2 is connected to the first end of the fourteenth resistor R14 and is connected to the control circuit 105, the second end of the ninth resistor R9 is connected to the first end of the tenth resistor R10, the second end of the tenth resistor R10 is connected to the first end of the fourth electrolytic capacitor EC4 and the first end of the fifth capacitor C5, the first end of the eighth resistor R8 is connected to the constant current The clamping end ROVP of the control chip U1, the first end of the fifth resistor R5 and the first end of the sixth resistor R6 are connected to the control end CS of the constant current control chip U1, the first end of the seventh resistor R7 is connected to the serial port end COMP of the constant current control chip U1, the second end of the seventh resistor R7 is connected to the first end of the fourth capacitor C4, the second end of the fifth resistor R5, the second end of the sixth resistor R6, the second end of the fourth capacitor C4, the second end of the fourth electrolytic capacitor EC4, the second end of the fifth capacitor C5, the second end of the eighth resistor R8, the second end of the first electrolytic capacitor EC1, the second end of the twelfth resistor R12, the second end of the thirteenth resistor R13, the second end of the fourteenth resistor R14, the input end of the first switch tube Q1 and the input end of the second switch tube Q2 are grounded.

[0071] Exemplarily, the first switch tube Q1, the second switch tube Q2 and the third switch tube Q3 all include triodes or field effect tubes;

[0072] The collector, emitter and base of the transistor correspond to the input, output and controlled end of the switch tube respectively;

[0073] The drain, source and gate of the field effect tube correspond to the input end, output end and controlled end of the switch tube respectively.

[0074] As an embodiment of the present application, the power supply circuit 103 includes a third diode D3, a fourth diode D4, a fifth diode D5, a third inductor L3, a seventh capacitor C7, an eighth capacitor C8, a second electrolytic capacitor EC2, a third electrolytic capacitor EC3, a fifteenth resistor R15, a sixteenth resistor R16 and a transformer chip U2.

[0075] The anode of the third diode D3 is connected to the main power circuit 102, the cathode of the third diode D3 is connected to the first end of the second electrolytic capacitor EC2 and the input end Drain of the transformer chip U2, the control end CS of the transformer chip U2 is connected to the first end of the fifteenth resistor R15, the voltage end VDD of the transformer chip U2 is connected to the first end of the seventh capacitor C7 and the cathode of the fifth diode D5, the second end of the fifteenth resistor R15, the first end of the third inductor L3, the second end of the seventh capacitor C7 and the cathode of the fourth diode D4 are connected together, the second end of the third inductor L3, the anode of the fifth diode D5, the first end of the eighth capacitor C8, the first end of the third electrolytic capacitor EC3 and the first end of the sixteenth resistor R16 are connected together and connected to the reference voltage VDD, the second end of the second electrolytic capacitor EC2, the anode of the fourth diode D4, the second end of the eighth capacitor C8, the second end of the third electrolytic capacitor EC3 and the second end of the sixteenth resistor R16 are grounded.

[0076] As an embodiment of the present application, the wall switch detection circuit 104 includes a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a ninth capacitor C9 and a first zener diode ZD1.

[0077] A first end of the seventeenth resistor R17 is connected to the rectifier and filter circuit 101, a second end of the seventeenth resistor R17 is connected to a first end of the eighteenth resistor R18, a second end of the eighteenth resistor R18 is connected to a first end of the nineteenth resistor R19, a first end of the ninth capacitor C9 is connected to a cathode of the first Zener diode ZD1 and is connected to the control circuit 105, and a second end of the ninth capacitor C9 is connected to a second end of the nineteenth resistor R19 and an anode of the first Zener diode ZD1.

[0078] As an embodiment of the present application, the control circuit includes a single chip microcomputer U3.

[0079] like Figure 4 As shown in the figure, it is the wall switch detection waveform TS1. For some dimmers that start slowly, the switch detection waveform will become this kind of waveform. Point A in the figure is the wall switch is turned on, and the entire section A→B→C is the power on section (B→C is not the power off section).

[0080] Figure 5 and Figure 6The wall switch detection principle of the color cutting detection circuit of a smart lamp provided by the present application is shown. For the sake of convenience, only the part related to the present embodiment is shown, which is described in detail as follows:

[0081] Figure 5 It is suitable that the AB segment time is less than the BC segment time. When the AB segment detects a high level, it is determined that the drive is turned on, and (~5) the detection and control circuit performs normal output control and lights up the LED light. If the high level time of the AB segment is less than 100ms (it can also be other times), the BC segment is detected as a low level at this time. Regardless of the low level time, it is determined that it is not turned off. Even if the C point detects a high level, the color is not cut.

[0082] Note: (~5) When the detection and control circuit detects a high level, it will immediately control the lighting module. Therefore, the LED light can be lit quickly to avoid a long delay before the LED light is lit. In addition, if the LED light does not light up immediately, the output is in an open circuit state, and the output is accumulating energy. Over time, the output voltage is greater than the normal operating voltage. When the circuit is turned on, there will be a large impact current.

[0083] When the AB segment detects a high level, it is determined to be a driver startup, (~5) the detection and control circuit performs normal output control and lights up the LED. If the high level time of the AB segment is greater than 100ms (or other times), the BC segment is detected as a low level at this time, and the low level time is greater than 10ms, it is determined to be shutdown. If the C point detects a high level, the color cutting operation is performed. If the low level time of the BC segment is less than 10ms, the color cutting operation is not performed.

[0084] Figure 6 It is suitable that the BC segment time is greater than the AB segment time. When the AB segment detects a high level and the high level time is greater than 10ms, it is determined that the drive is turned on, and (~5) the detection and control circuit performs normal output control and lights up the LED. If BC is detected as a low level and the BC segment time is less than 100ms (it can also be other times), it is determined that it is not turned off, and the color is not cut even if a high level is detected at point C.

[0085] When the AB segment detects a high level and the high level time is greater than 10ms, it is determined to be a driver startup, (~5) the detection and control circuit performs normal output control and lights up the LED. If the BC segment is detected as a low level and the BC segment time is greater than 100ms (or other times), it is determined to be shutdown, and when the C point detects a high level, color cutting is performed. If the high level time of the AB segment is less than 10ms, no color cutting operation is performed.

[0086] The color cutting detection circuit detects the wall switch signal through the single chip microcomputer, and uses the unique detection method of the single chip microcomputer to correctly determine whether the wall switch is actually turned on and off, avoiding false detection, thereby eliminating false triggering caused by changes in the detection waveform. This method is simple and easy.

[0087] The present application also provides a smart lamp, comprising:

[0088] Light-emitting module;

[0089] The color cutting detection circuit as described above; and

[0090] The power supply circuit 106 is configured to output an alternating current signal to power the color cutting detection circuit.

[0091] It should be noted that the intelligent lamp is based on the above-mentioned color cutting detection circuit and adds a light-emitting module and a power supply circuit 106. Therefore, the functional description and principle description of the rectifier filter circuit 101, the main power circuit 102, the power supply circuit 103, the wall switch detection circuit 104 and the control circuit 105 in the color cutting detection circuit can be referred to. Figures 1 to 6 The embodiments of the present invention will not be described in detail here.

[0092] Figure 7 The step flow of a color cutting detection method for a smart lamp provided by another aspect of the present application is shown. For the sake of convenience, only the part related to the present embodiment is shown, which is described in detail as follows:

[0093] The present application also provides a color cutting detection method for an intelligent lamp, comprising the following steps:

[0094] S101. After rectifying and filtering the AC signal output by the power supply circuit, a DC signal is output;

[0095] S102. According to the level of the DC signal received within a preset time period, to detect the state of the wall switch;

[0096] S103. Convert the voltage of the DC signal;

[0097] S104. Receive the DC signal after voltage conversion and obtain the state of the wall switch to output a feedback signal;

[0098] S105. Perform power control on the DC signal according to the feedback signal, control the light-emitting module to emit light or turn off, and switch the color temperature of the light-emitting module.

[0099] In summary, the above-mentioned intelligent lamp and its color cutting detection circuit and color cutting detection method in the embodiment of the present application include a rectifier and filter circuit, a main power circuit, a power supply circuit, a wall switch detection circuit and a control circuit. After rectifying and filtering the AC signal output by the power supply circuit, a DC signal is output, and the state of the wall switch is detected according to the level of the DC signal received within a preset time period, and then the DC signal is converted into voltage, and the state of the wall switch is obtained to output a feedback signal, and finally the power of the DC signal is controlled according to the feedback signal, and the light-emitting module is controlled to emit light or extinguish, and the color temperature of the light-emitting module is switched. Therefore, the above-mentioned detection method is used to correctly judge whether the wall switch is truly turned on and off, so as to avoid false detection, thereby eliminating the false triggering caused by the change of the detection waveform, and achieving the effect of switching the color temperature of the light-emitting module, which solves the problem that the detection waveform of the switch is changed due to the dimmer in the existing intelligent lamp, thereby causing the color cutting to be falsely triggered.

[0100] Various embodiments are described herein for various devices, circuits, apparatuses, systems and / or methods. Many specific details are set forth to provide a thorough understanding of the overall structure, function, manufacture and use of the embodiments as described in the specification and shown in the drawings. However, those skilled in the art will appreciate that the embodiments may be implemented without such specific details. In other examples, well-known operations, parts and elements are described in detail so as not to make the embodiments in the specification difficult to understand. Those skilled in the art will appreciate that the embodiments herein and shown are non-limiting examples, and therefore it will be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.

[0101] References to "various embodiments", "in an embodiment", "one embodiment", or "an embodiment" throughout the specification, etc., mean that a particular feature, structure, or characteristic described with respect to an embodiment is included in at least one embodiment. Therefore, the appearance of the phrases "in various embodiments", "in some embodiments", "in an embodiment", or "in an embodiment", etc., in appropriate places throughout the specification, do not necessarily refer to the same embodiment. In addition, particular features, structures, or characteristics may be combined in any appropriate manner in one or more embodiments. Therefore, a particular feature, structure, or characteristic shown or described with respect to one embodiment may be combined in whole or in part with features, structures, or characteristics of one or more other embodiments without assuming that such a combination is not an illogical or non-functional limitation. Any directional references (e.g., plus, minus, upper, lower, up, down, left, right, leftward, rightward, top, bottom, above, below, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to help the reader understand the present disclosure, and do not create limitations, particularly with respect to the location, orientation, or use of the embodiments.

[0102] Although certain embodiments are described above with a certain degree of detail, those skilled in the art may make many changes to the disclosed embodiments without departing from the scope of the present disclosure. Connection references (e.g., attachment, coupling, connection, etc.) should be interpreted broadly and may include intermediate members between the connection of elements and relative motion between elements. Therefore, connection references do not necessarily imply that two elements are directly connected / coupled and are in a fixed relationship with each other. The use of "for example" throughout the specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the present disclosure, and the present disclosure is not limited to such examples. It is intended that all matters included in the above description or shown in the accompanying drawings should be interpreted as merely illustrative rather than restrictive. Changes in details or structure may be made without departing from the present disclosure.

[0103] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A color cutting detection circuit for an intelligent lamp, characterized in that: include: A rectifier and filter circuit is connected to the power supply circuit and is configured to perform rectification and filtering on the AC signal output by the power supply circuit and then output a DC signal; A main power circuit, connected to the rectification and filtering circuit, configured to perform power control on the DC signal according to the feedback signal, and control the light-emitting module to emit light or turn off, and perform color temperature switching on the light-emitting module; a power supply circuit, connected to the main power circuit and configured to perform voltage conversion on the DC signal; A wall switch detection circuit is connected to the rectification and filtering circuit and is configured to detect the state of the wall switch according to the level of the DC signal received within a preset time period; as well as A control circuit connected to the main power circuit, the power supply circuit and the wall switch detection circuit, configured to receive the DC signal after voltage conversion and obtain the state of the wall switch to output the feedback signal to the main power circuit; The wall switch detection circuit comprises: a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a ninth capacitor and a first voltage zener diode; The first end of the seventeenth resistor is connected to the rectifier and filter circuit, the second end of the seventeenth resistor is connected to the first end of the eighteenth resistor, the second end of the eighteenth resistor is connected to the first end of the nineteenth resistor, the first end of the ninth capacitor is connected to the cathode of the first voltage zener diode and connected to the control circuit, and the second end of the ninth capacitor is connected to the second end of the nineteenth resistor and the anode of the first voltage zener diode; The control circuit includes a single chip microcomputer.

2. The color cutting detection circuit according to claim 1, characterized in that: The rectifier and filter circuit comprises: a rectifier circuit, connected to the power circuit, and configured to rectify the alternating current signal output by the power circuit; and The filter subcircuit is connected to the rectifier subcircuit and is configured to filter the rectified AC signal to output the DC signal.

3. The color cutting detection circuit according to claim 2, characterized in that: The rectifier circuit is implemented by a rectifier bridge.

4. The color cutting detection circuit according to claim 2, characterized in that: The filtering subcircuit comprises: A first diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor and a first inductor; The anode of the first diode is connected to the rectifier circuit, the cathode of the first diode, the first end of the first resistor, the first end of the first inductor and the first end of the first capacitor are connected in common, the second end of the first resistor, the second end of the first inductor, the first end of the second capacitor and the first end of the third capacitor are connected in common and connected to the main power circuit, the second end of the third capacitor, the first end of the second resistor, the first end of the third resistor and the first end of the fourth resistor are connected in common, and the second end of the first capacitor, the second end of the second capacitor, the second end of the second resistor, the second end of the third resistor and the second end of the fourth resistor are connected in common.

5. The color cutting detection circuit according to claim 1, characterized in that: The main power circuit comprises: A second diode, a second voltage-stabilizing diode, a first switch tube, a second switch tube, a third switch tube, a second inductor, a first electrolytic capacitor, a fourth electrolytic capacitor, a constant current control chip, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fourth capacitor, a fifth capacitor, a sixth capacitor, and a tenth capacitor; The first end of the second inductor and the first end of the sixth capacitor are connected to the rectifier and filter circuit, the second end of the second inductor is connected to the anode of the second diode, the cathode of the second diode, the first end of the ninth resistor, the first end of the sixth capacitor, the first end of the first electrolytic capacitor, the first end of the eleventh resistor, the cathode of the second voltage-stabilizing diode and the output end of the third switch tube are connected together, the input end of the third switch tube and the first end of the tenth capacitor are connected to the input end of the light-emitting module, the anode of the second voltage-stabilizing diode is connected together with the controlled end of the third switch tube and the second end of the tenth capacitor, the output end of the first switch tube and the output end of the second switch tube are connected to the output end of the light-emitting module, the controlled end of the first switch tube is connected together with the first end of the thirteenth resistor and connected to the control circuit, and the controlled end of the second switch tube is connected together with the first end of the fourteenth resistor and connected to the control The circuit is connected, the second end of the ninth resistor is connected to the first end of the tenth resistor, the second end of the tenth resistor is connected with the first end of the fourth electrolytic capacitor and the first end of the fifth capacitor, the first end of the eighth resistor is connected to the clamping end of the constant current control chip, the first end of the fifth resistor and the first end of the sixth resistor are connected to the control end of the constant current control chip, the first end of the seventh resistor is connected to the serial port end of the constant current control chip, the second end of the seventh resistor is connected to the first end of the fourth capacitor, the second end of the fifth resistor, the second end of the sixth resistor, the second end of the fourth capacitor, the second end of the fourth electrolytic capacitor, the second end of the fifth capacitor, the second end of the eighth resistor, the second end of the first electrolytic capacitor, the second end of the twelfth resistor, the second end of the thirteenth resistor, the second end of the fourteenth resistor, the input end of the first switch tube and the input end of the second switch tube are grounded.

6. The color cutting detection circuit according to claim 1, characterized in that: The power supply circuit comprises: A third diode, a fourth diode, a fifth diode, a third inductor, a seventh capacitor, an eighth capacitor, a second electrolytic capacitor, a third electrolytic capacitor, a fifteenth resistor, a sixteenth resistor and a transformer chip; The anode of the third diode is connected to the main power circuit, the cathode of the third diode is connected to the first end of the second electrolytic capacitor and the input end of the transformer chip, the control end of the transformer chip is connected to the first end of the fifteenth resistor, the voltage end of the transformer chip is connected to the first end of the seventh capacitor and the cathode of the fifth diode, the second end of the fifteenth resistor, the first end of the third inductor, the second end of the seventh capacitor and the cathode of the fourth diode are connected together, the second end of the third inductor, the anode of the fifth diode, the first end of the eighth capacitor, the first end of the third electrolytic capacitor and the first end of the sixteenth resistor are connected together and connected to a reference voltage, and the second end of the second electrolytic capacitor, the anode of the fourth diode, the second end of the eighth capacitor, the second end of the third electrolytic capacitor and the second end of the sixteenth resistor are grounded.

7. A smart lamp, characterized in that: include: Light-emitting module; A color cutting detection circuit as described in any one of claims 1 to 6; as well as The power supply circuit is configured to output an alternating current signal to power the color cutting detection circuit.

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