A multi-lamp source switching control circuit and device

Abstract

The utility model provides a kind of multi-lamp source switch switching control circuit and device, it is related to lighting technical field.The circuit includes color temperature switching module and multiple light source modules, each light source module corresponds one illumination mode;Color temperature switching module includes color temperature control component, and the control end of each light source module is connected with color temperature control component.When color temperature control component receives first trigger signal, and receives second trigger signal in preset period, color temperature control component sends first control signal group to each light source module to switch from initial illumination mode to target illumination mode.By adding a color temperature control component that stores initial illumination mode (memorized illumination mode), and when receiving different trigger signals and / or trigger signal combinations of switch detection component, the switch tube of corresponding light source module is turned on to complete illumination mode switching or keeping, to meet the actual needs of user's light mode memory and flexible switching under specific lighting environment.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and more specifically, to a multi-light source switching control circuit and device. Background Technology

[0002] Traditional LED controllers with night light functions are mainly controlled by wall-mounted switches. The technical implementation solutions mainly include the following: microcontroller solutions using isolated or non-isolated switching power supplies. Although this solution has complete functions, the system is complex, has low reliability, and is expensive; linear constant current microcontroller solutions require an additional independent DC-DC switching power supply circuit. Due to the presence of pulse width modulation signals, common-mode and differential-mode inductors must be set at the high-voltage input to suppress electromagnetic compatibility (EMC) interference, resulting in high overall costs.

[0003] While some electrical appliances possess nightlight functionality, they lack crucial memory features. Other solutions involve connecting a resistor in parallel with the switch, but these require user modification. Furthermore, nightlights controlled by wall-mounted switches generally suffer from a fixed operating mode: upon power-on, they default to main light mode; if turned off and then on again within 5 seconds, they switch to nightlight mode; however, if off for more than 5 seconds and then turned on again, the light invariably reverts to main light mode. This operating mode can cause significant inconvenience in certain scenarios. For example, if a user turns off the main light at night and then needs to check on sleeping family members or inspect livestock, the sudden bright light can disturb their rest or frighten animals.

[0004] Therefore, there is an urgent need for a switch control scheme that can meet users' actual needs for remembering and flexibly switching lighting modes, especially in situations where it is necessary to maintain a specific lighting environment. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a multi-light source switch switching control circuit and device, which adds a color temperature control component to store the initial illumination mode (memorized illumination mode), and controls the switching transistor of the corresponding light source module to turn on when different trigger signals and / or combinations of trigger signals are received from the switch detection component, so as to complete the switching from the initial illumination mode to the target illumination mode, thereby meeting the user's actual needs for memorizing and flexibly switching lighting modes in situations where a specific lighting environment needs to be maintained.

[0006] In a first aspect, this utility model provides a multi-light source switch control circuit, including: a color temperature switching module and multiple light source modules, each light source module corresponding to a lighting mode; the color temperature switching module includes a color temperature control component; the color temperature control component is connected to the control terminal of each light source module. When the color temperature control component receives the first trigger signal and the second trigger signal within a preset time period, the color temperature control component sends a first control signal group to each light source module to control the target light source module among the multiple light source modules to be turned on and to control the other light source modules except the target light source module to be turned off, so as to switch the multi-light source switch control circuit from the initial illumination mode to the target illumination mode; the initial illumination mode is the illumination mode memorized in the color temperature control component; And / or when the color temperature control component receives the first trigger signal and receives the second trigger signal after a preset time period, the color temperature control component sends a second control signal group to each light source module to control the initial light source module among the multiple light source modules to be turned on, and controls the remaining light source modules other than the initial light source module to be turned off, so as to keep the multi-light source switch switching control circuit in the initial illumination mode. The first trigger signal and the second trigger signal are complementary signals.

[0007] Optionally, the first trigger signal is a low-level signal, the second trigger signal is a high-level signal, and the initial illumination mode is the main light mode, while the target illumination mode is the night light mode. When the color temperature control component receives the low-level signal and receives the high-level signal within a preset time period, the color temperature control component sends a first control signal group to each light source module to control the first light source module among the multiple light source modules to be turned on, and controls all other light source modules except the first light source module to be turned off; wherein, the first light source module is used to characterize the light source module corresponding to the night light mode; And / or when the color temperature control component receives a low-level signal and receives a high-level signal after a preset time period, the color temperature control component sends a second control signal group to each light source module, controls the second light source module among the multiple light source modules to be turned on, and controls all other light source modules except the second light source module to be turned off; wherein, the second light source module is used to characterize the light source module corresponding to the main lamp mode.

[0008] Optionally, the color temperature switching module includes a switch detection component and a first switch component. The first switch component includes multiple switching transistors, each of which is connected to a corresponding light source module. The color temperature control component is connected to the transmitting end of the switch detection component and the control end of each switching transistor. The switch detection component is used to detect the power-on / power-off state of the power supply and send a first trigger signal or a second trigger signal to the color temperature control component accordingly. When the color temperature control component receives the first trigger signal and receives the second trigger signal within a preset time period, the color temperature control component sends the first control signal group to all switching transistors to switch the multi-lamp source switching control circuit from the initial illumination mode to the target illumination mode. And / or when the color temperature control component receives the first trigger signal and receives the second trigger signal after a preset time period, the color temperature control component sends a second control signal group to all switching transistors to keep the multi-lamp source switching control circuit in the initial illumination mode.

[0009] Optionally, the switch detection component includes a first resistor, a second resistor, a first capacitor, a first diode, and a second diode; the first end of the first resistor is connected to a power supply; the second end of the first resistor is connected to the anode of the first diode; the cathode of the first diode is connected to the first end of the first capacitor, the first end of the second resistor, the cathode of the second diode, and the receiving end of the color temperature control component, respectively; the second end of the first capacitor is connected to the second end of the second resistor and the anode of the second diode and grounded.

[0010] Optionally, the color temperature switching module also includes an energy storage component, the output of which is connected to the power supply of the color temperature control component, and the input of which is connected to the power supply. Energy storage components are used to maintain the operating power of the color temperature control components within a preset time period when the power supply is off.

[0011] Optionally, the energy storage component includes a capacitor unit, a resistor unit, a third diode, and a fourth diode. The capacitor unit includes multiple capacitors connected in parallel. The first end of the resistor unit is connected to a power supply. The second end of the resistor unit is connected to the cathode of the fourth diode and the anode of the third diode. The cathode of the third diode is connected to the first end of the multiple capacitors connected in parallel. The anode of the fourth diode is connected to the second end of the multiple capacitors connected in parallel.

[0012] Optionally, the multi-lamp source switching control circuit also includes a linear constant current control module. The linear constant current control module includes a linear control component, a voltage drop detection component, and a second switching component. The input terminal of the linear control component is connected to the power supply, and the output terminal of the linear control component is connected to the control terminal of the second switching component. The output terminal of the second switching component serves as the output terminal of the linear constant current control module and is connected to the power supply terminal of the color temperature switching module and the power supply terminal of each light source module. Voltage drop detection component, used to detect the output voltage of the linear constant current control module; A linear control component is used to send a third control signal to the second switching component based on the output voltage, adjust the conduction state of the second switching component, and output a constant supply current of a preset value.

[0013] Optionally, when the linear control component includes a first processing chip, the voltage drop detection component includes a seventh resistor and an eighth resistor connected in parallel, and the second switching component includes a third switching transistor; the output pin of the first processing chip is connected to the control terminal of the third switching transistor, the first terminal of the third switching transistor is connected to the first terminal of the seventh resistor and the eighth resistor connected in parallel; the second terminals of the seventh resistor and the eighth resistor connected in parallel are grounded.

[0014] Optionally, the multi-lamp source switching control circuit also includes a flicker suppression module, which includes a seventh diode and multiple parallel-connected driving components; the anode of the seventh diode is connected to the power supply, the cathode of the seventh diode is connected to the first end of the multiple parallel-connected driving components, and the second end of the multiple parallel-connected driving components is connected to the input end of the light source module.

[0015] Secondly, this utility model also provides a multi-lamp source switch switching control device, including a power supply and a multi-lamp source switch switching control circuit as described in any of the first aspects above, wherein the power supply is connected to the input terminal of the multi-lamp source switch switching control circuit.

[0016] The multi-light source switch switching control circuit and device provided in this embodiment of the utility model have the following beneficial effects: The multi-source light switch switching control circuit in this application includes a color temperature switching module and multiple light source modules, each corresponding to a color temperature. The color temperature switching module includes a color temperature control component, which is connected to the control terminal of each light source module. When the color temperature control component receives a first trigger signal and a second trigger signal within a preset time period, the color temperature control component sends a first control signal group to each light source module, controlling the target light source module to turn on and the remaining light source modules to turn off, thereby switching the multi-source light switch switching control circuit from the initial illumination mode to the target illumination mode. And / or when the color temperature control component receives the first trigger signal and a second trigger signal after a preset time period, the color temperature control component sends a second control signal group to each light source module, controlling the initial light source module to turn on and the remaining light source modules to turn off, thereby maintaining the multi-source light switch switching control circuit in the initial illumination mode and waking it up from the initial illumination mode. Based on this, this application adds a color temperature control component that stores the initial lighting mode (memorized lighting mode), and controls the switching transistor of the corresponding light source module to turn on when different trigger signals and / or combinations of trigger signals are received from the switch detection component, so as to complete the switching from the initial lighting mode to the target lighting mode. In this way, in situations where a specific lighting environment needs to be maintained, the actual needs of users for remembering and flexibly switching lighting modes can be met.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a block diagram of one of the multi-lamp source switch switching control circuits provided in an embodiment of the present invention; Figure 2 The second block diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 3 The third block diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 4 One of the circuit diagrams of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 5 The second circuit diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 6 The fourth block diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 7 The third circuit diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 8 The fifth block diagram shows the multi-lamp source switch switching control circuit provided in the embodiment of this utility model; Figure 9 The fourth circuit diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown. Figure 10 The fifth circuit diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 11 The sixth circuit diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 12 The seventh circuit diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 13The eighth circuit diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention is shown; Figure 14 A block diagram of the multi-light source switch switching control device provided in an embodiment of the present invention is shown.

[0020] Key component symbols: 10-Multi-source lamp switch control device; 100-Multi-source lamp switch control circuit; 200-Power supply; 11-Color temperature switching module; 12-Light source module; 13-Linear constant current control module; 15-Flicker suppression module; 12A-First light source module; 12B-Second light source module; 14-AC-DC conversion module; 16-Color temperature control module; 22-Color temperature control component; 21-Switch detection component; 23-First switch component; 24-Energy storage component; 25-Linear control component; 26-Voltage drop detection component; 27-Second switch component; 28-Rectifier bridge unit; 29-Driver component; 30-Color temperature adjustment unit; 31-Capacitor unit; 32-Resistor unit; SC-Main control switch; Q2-First switching transistor; Q3 - Second switch transistor; Q1 - Third switch transistor; R8 - First resistor; R13 - Second resistor; R15 - Third resistor; R16 - Fourth resistor; R3 - Fifth resistor; R4 - Sixth resistor; RS1 - Seventh resistor; RS2 - Eighth resistor; R7 - Ninth resistor; R10 - Tenth resistor; R12 - Eleventh resistor; R6 - Twelfth resistor; R9 - Thirteenth resistor; R11 - Fourteenth resistor; R1 - Fifteenth resistor; R5 - Sixteenth resistor; R2 - Seventeenth resistor; RL1 - Eighteenth resistor; R14 - Nineteenth resistor; RA1 - Twentieth resistor; RB1 - Resistor #21; RC1 - Resistor #22; RE1 - Resistor #23; RF1 - Resistor #24; RJ1 - Resistor #25; RH1 - Resistor #26; C9 - Capacitor #1; C5 - Capacitor #2; C6 - Capacitor #3; C7 - Capacitor #4; C8 - Capacitor #5; C10 - Capacitor #6; CE1 - Capacitor #7; IC5 - Processing Chip #1; D7 - Diode #1; D8 - Diode #2; D5 - Diode #3; D4 - Diode #4; D1 - Diode #5; D3 - Diode #6; D2 - Diode #7; DA1 - Diode #8; K1 - Switch #1; F1 - Fuse; RV1 - Varistor; CBB1 - Filter Capacitor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, in the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] Please refer to Figure 1 , Figure 1 A block diagram of a multi-light source switch control circuit provided in an embodiment of the present invention is shown. In this embodiment, the multi-light source switch control circuit 100 includes a color temperature switching module 11 and multiple light source modules 12, each light source module 12 corresponding to a lighting mode. The color temperature switching module 11 includes a color temperature control component 22, which is connected to the control terminal of each light source module 12.

[0028] When the color temperature control component receives the first trigger signal and receives the second trigger signal within a preset time period, the color temperature control component sends a first control signal group to each light source module to control the target light source module among the multiple light source modules to be turned on, and controls the other light source modules except the target light source module to be turned off, so as to switch the multi-light source switch control circuit 100 from the initial illumination mode to the target illumination mode.

[0029] In this embodiment, the initial lighting mode is the lighting mode memorized in the color temperature control component.

[0030] And / or when the color temperature control component receives the first trigger signal and receives the second trigger signal after a preset time period, the color temperature control component sends a second control signal group to each light source module to control the initial light source module among the multiple light source modules to be turned on, and controls the remaining light source modules other than the initial light source module to be turned off, so as to keep the multi-light source switch switching control circuit 100 in the initial illumination mode.

[0031] The first trigger signal and the second trigger signal are complementary signals.

[0032] In one possible implementation, the first trigger signal is a low-level signal, the second trigger signal is a high-level signal, and the initial illumination mode is the main light mode, while the target illumination mode is the night light mode. When switching from the main light mode to the night light mode is required, in this embodiment, the color temperature control component receives a low-level signal and, after receiving a high-level signal within a preset time period, sends a first control signal group to each light source module to control the first light source module among the multiple light source modules to be turned on, and controls all other light source modules except the first light source module to be turned off; wherein, the first light source module is used to characterize the light source module corresponding to the night light mode.

[0033] When the main light mode needs to be maintained, in this embodiment, when the color temperature control component receives a low-level signal and receives a high-level signal after a preset time period, the color temperature control component sends a second control signal group to each light source module, controls the second light source module among the multiple light source modules to be turned on, and controls all other light source modules except the second light source module to be turned off; wherein, the second light source module is used to represent the light source module corresponding to the main light mode.

[0034] Based on this, this embodiment adds a color temperature control component that can store the initial lighting mode (memorized lighting mode), and when the color temperature control component receives different trigger signals and / or combinations of trigger signals from the switch detection component, it controls the switching transistor of the corresponding light source module to turn on, so as to complete the switching from the initial lighting mode to the target lighting mode. In this way, in situations where a specific lighting environment needs to be maintained, the actual needs of users for remembering and flexibly switching lighting modes can be met.

[0035] Please refer to Figure 2 , Figure 2 This diagram shows another block diagram of the multi-light source switch switching control circuit provided in this embodiment of the present invention; in this embodiment, the color temperature switching module 11 includes a switch detection component 21 and a first switch component 23. The first switch component 23 includes multiple switch tubes, each of which is connected to a light source module 12; the color temperature control component 22 is connected to the transmitting end of the switch detection component 21 and the control end of each switch tube. The switch detection component 21 is used to detect the power-on / power-off state of the power supply and send a first trigger signal or a second trigger signal to the color temperature control component accordingly. In one possible implementation, when the color temperature control component receives a first trigger signal and a second trigger signal within a preset time period, the color temperature control component sends a first control signal group to all switching transistors to control the target light source module among the multiple light source modules to turn on, and controls the remaining light source modules other than the target light source module to turn off, so as to switch the multi-light source switching control circuit from the initial illumination mode to the target illumination mode.

[0036] And / or when the color temperature control component receives the first trigger signal and receives the second trigger signal after a preset time period, the color temperature control component sends a second control signal group to all switching transistors to control the initial light source module among the multiple light source modules to turn on, and controls the remaining light source modules other than the initial light source module to turn off, so as to keep the multi-light source switching control circuit in the initial illumination mode.

[0037] It should be noted that in this embodiment, the first control signal group and / or the second control signal group include combinations of different control signals, each control signal corresponding to a switching transistor. When the control signal is high level and / or low level, the first control signal group and / or the second control signal group are used to characterize combinations of multiple high level and / or low level signals to adjust the conduction status of the corresponding switching transistors respectively.

[0038] In one possible implementation, the light source module in this embodiment includes multiple LEDs connected in series. Each light source module can be configured with a different number and / or different types of LEDs to achieve different modes of state display after the corresponding switch is turned on.

[0039] It should be noted that this embodiment does not limit the specific color temperature parameters of the night light mode and / or main light mode, that is, it does not limit the number of LEDs in each light source module, nor does it limit the corresponding LED types. The specific values ​​of their numbers can be set or adjusted according to the user's actual situation to correspond to different lighting modes. Each lighting mode corresponds to different illumination brightness and / or illumination color temperature.

[0040] In this embodiment, the switch detection component is used to detect the power-on / power-off state of the power supply. It should be noted that the power-on state and / or power-off state correspond to the output state of the power supply, that is, the supply state of the main current of the current multi-lamp source switch switching control circuit. When the power supply is in the power-off state, it indicates that the main current of the current multi-lamp source switch switching control circuit is turned off; when the power supply is in the power-on state, it indicates that the main current of the current multi-lamp source switch switching control circuit is turned on.

[0041] Please refer to Figure 3 , Figure 3 This diagram shows another block diagram of the multi-light source switch switching control circuit provided in this embodiment of the present invention. In this embodiment, the multi-light source switch switching control circuit 100 also includes a main control switch SC. The input terminal of the main control switch SC is connected to the output terminal of the power supply 200, and the output terminal of the main control switch SC is connected to the detection terminal of the switch detection component 21.

[0042] The main control switch SC is used to switch the power-on / power-off state of the power supply output signal.

[0043] In this embodiment, the main control switch SC can be the main power switch of the multi-lamp source switching control circuit 100. When the main control switch SC is turned off, the output signal of the power supply 200 is in a power-off state; correspondingly, the switch detection component 21 sends a first trigger signal to the color temperature control component 22 to indicate that the main current of the current multi-lamp source switching control circuit 100 is cut off.

[0044] When the main control switch SC is turned on, the output signal of the power supply 200 is in the power-on state. Correspondingly, the switch detection component 21 sends a second trigger signal to the color temperature control component 22 to indicate that the main current of the current multi-lamp source switch switching control circuit 100 is turned on.

[0045] please Figure 3 Based on, refer to Figure 4 , Figure 4 This diagram illustrates one of the circuit schematics of a multi-lamp source switch switching control circuit provided in this embodiment. In this embodiment, the switch detection component 21 includes a first resistor R8, a second resistor R13, a first capacitor C9, a first diode D7, and a second diode D8. The first end of the first resistor R8 is connected to the power supply 200 via the main control switch SC. The second end of the first resistor R8 is connected to the anode of the first diode D7. The cathode of the first diode D7 is connected to the first end of the first capacitor C9, the first end of the second resistor R13, the cathode of the second diode D8, and the receiving end of the color temperature control component 22, respectively. The second end of the first capacitor C9 is connected to the second end of the second resistor R13 and the anode of the second diode D8 and grounded.

[0046] In this embodiment, when the color temperature control component 22 is a microcontroller IC 6 with an erasable and rewritable memory, the receiving end of the color temperature control component 22 is the fourth pin of the microcontroller IC 6.

[0047] Correspondingly, in one possible implementation, the second terminal of the first capacitor C9, the second terminal of the second resistor R13, and the anode of the second diode D8 can be connected to the 8th pin of the microcontroller IC6.

[0048] In this embodiment, if the main current of the current multi-lamp source switch switching control circuit 100 is turned off, that is, the main control switch SC is turned off, the switch detection component 21 can write a low-level signal to the fourth pin of the microcontroller IC6. Conversely, if the main control switch SC is turned on, the main current of the current multi-lamp source switch switching control circuit 100 is turned on, and the switch detection component 21 can write a high-level signal to the fourth pin of the microcontroller IC6.

[0049] Please Figure 4 Based on, refer to Figure 5 , Figure 5 The second circuit diagram of the multi-light source switch switching control circuit provided in this embodiment is shown. In this embodiment, when the multi-light source switch switching control circuit 100 includes a first light source module 12A and a second light source module 12B, the first switch assembly 23 includes only a first switch transistor Q2 and a second switch transistor Q3. The first switch transistor Q2 is connected to the first light source module 12A, and the second switch transistor Q3 is connected to the second light source module 12B. The second light source module 12B is used to represent the light source module 12 in the corresponding main light mode.

[0050] Based on this, assuming that the initial illumination mode stored in the color temperature control component is the main light mode, if it is necessary to switch from the main light mode to the night light mode, it is only necessary to make the color temperature control component receive a low-level signal first, and receive a high-level signal within 30 milliseconds to 5 seconds. The color temperature control component will then send a high-level signal to the first switch corresponding to the night light mode and send a low-level signal to the other switches except the first switch, so as to turn on the first light source module representing the night light mode and turn off the second light source module representing the main light mode.

[0051] And / or if it is necessary to maintain the main light mode, then it is only necessary to make the color temperature control component receive a low level signal first, and receive a high level signal after more than 5 seconds. At this time, the color temperature control component will send a low level signal to the first switch tube corresponding to the night light mode, and send a high level signal to the other switches tubes except the first switch tube, so as to turn on the second light source module representing the main light mode and turn off the first light source module representing the night light mode.

[0052] Please continue to refer to this. Figure 5The multi-light source switching control circuit 100 also includes a third resistor R15 and a fourth resistor R16.

[0053] Specifically, the first end of the third resistor R15 is connected to the seventh pin of the microcontroller IC6 and the control terminal of the first switch Q2; the first end of the fourth resistor R16 is connected to the sixth pin of the microcontroller IC6 and the control terminal of the second switch Q3; and the second end of the fourth resistor R16 is connected to the second end of the third resistor R15, the eighth pin of the microcontroller IC6, the first end of the first switch Q2, and the first end of the second switch Q3. The second end of the first switch Q2 is connected to the first light source module 12A; and the second end of the second switch Q3 is connected to the second light source module 12B.

[0054] Furthermore, to ensure that the aforementioned multi-lamp source switching control circuit can switch lighting modes within a preset time period after the main current is turned off, please... Figure 3 Based on, refer to Figure 6 , Figure 6 This diagram shows another block illustration of the multi-lamp source switch control circuit provided in this embodiment of the present invention. In this embodiment, the color temperature switching module 11 further includes an energy storage component 24. The output terminal of the energy storage component 24 is connected to the power supply terminal of the color temperature control component 22, and the input terminal of the energy storage component 24 is connected to the power supply 200.

[0055] The energy storage component 24 is used to maintain the working power of the color temperature control component 22 within a preset time period when the power supply 200 is in a powered-off state.

[0056] Please refer to Figure 7 , Figure 7 The third circuit diagram of the multi-lamp source switch switching control circuit provided in this embodiment is shown. In this embodiment, the energy storage component 24 includes a capacitor unit 31, which includes multiple capacitors connected in parallel. The energy storage component 24 also includes a resistor unit 32, a third diode D5, and a fourth diode D4. The first end of the resistor unit 32 is connected to the power supply 200 through the main control switch SC. The second end of the resistor unit 32 is connected to the cathode of the fourth diode D4 and the anode of the third diode D5. The cathode of the third diode D5 is connected to the first end of the multiple capacitors connected in parallel, and the anode of the fourth diode D4 is connected to the second end of the multiple capacitors connected in parallel.

[0057] Please continue to refer to this. Figure 7In this embodiment, when the capacitor unit 31 includes a second capacitor C5, a third capacitor C6 and a fourth capacitor C7 connected in parallel, the first end of the second capacitor C5 is connected to the cathode of the third diode D5 and the first power supply terminal of the color temperature control component 22, and the second end of the second capacitor C5 is connected to the anode of the fourth diode D4 and the second power supply terminal of the color temperature control component 22.

[0058] In this embodiment, when the color temperature control component 22 is a microcontroller IC 6 with erasable and rewritable memory, the first power supply terminal VDD of the color temperature control component 22 is the first pin of the microcontroller IC 6; the second power supply terminal VSS of the color temperature control component 22 is the eighth pin of the microcontroller IC 6.

[0059] Please continue to refer to this. Figure 7 In this embodiment, the resistor unit 32 includes a fifth resistor R3 and a sixth resistor R4 connected in parallel. The first end of the fifth resistor R3 is connected to the second end of the main control switch SC and the first end of the sixth resistor R4. The second end of the fifth resistor R3 is connected to the anode of the third diode D5 and the cathode of the fourth diode D4.

[0060] Based on this, in this embodiment, the color temperature control component 22 can maintain normal operation for a certain period of time by utilizing the electrical energy stored in the second capacitor C5, the third capacitor C6 and the fourth capacitor C7 after the main current is turned off, and based on the unidirectional conduction of the fourth diode D4.

[0061] It should be noted that the preset time period in this embodiment is less than or equal to the above-mentioned time range for maintaining normal operation, so as to ensure that there is sufficient power to maintain the control operation of the color temperature control component for switching or maintaining after the main control switch SC is turned off.

[0062] In one possible implementation, when the electricity stored in the second capacitor C5, the third capacitor C6, and the fourth capacitor C7 can sustain the normal operation of the switch detection component for 21-10 seconds, the preset time period in this embodiment can range from 30 milliseconds to 5 seconds.

[0063] Based on this, assuming that the initial illumination mode stored in the color temperature control component 22 is the main lamp mode, if it is necessary to maintain the main lamp mode, it is only necessary to make the fourth pin of the microcontroller IC6 receive a low-level signal first, and receive a high-level signal after more than 5 seconds. At this time, the color temperature control component 22 will send a low-level signal to the first switch Q2 corresponding to the night light mode, and send a high-level signal to the other switches except the first switch Q2, so as to turn on the second light source module 12B that represents the main lamp mode.

[0064] Furthermore, in this embodiment, the color temperature control component 22 also adjusts the power consumption of the multi-lamp source switching control circuit 100 based on the value of the trigger signal sent by the switch detection component 21.

[0065] In one possible implementation, in this embodiment, if the period of low-level signal detected by pin 4 of the microcontroller IC6 exceeds 30 milliseconds, the microcontroller IC6 will determine that the main current of the current multi-light source switch switching control circuit 100 is turned off. It will adjust the working state of each component in the multi-light source switch switching control circuit 100 to enter a low-power mode. If no corresponding trigger command is received after the set 5-second time period expires, it will adjust the working state of each component in the multi-light source switch switching control circuit 100 again to enter a sleep mode, waiting for the next wake-up signal to trigger.

[0066] To ensure the stable operation of the multi-lamp source switching control circuit, please refer to... Figure 8 , Figure 8 This diagram shows another block diagram of the multi-lamp source switch switching control circuit provided in this embodiment of the present invention. In this embodiment, the multi-lamp source switch switching control circuit 100 further includes a linear constant current control module 13, which includes a linear control component 25, a voltage drop detection component 26, and a second switch component 27.

[0067] The input terminal of the linear control component 25 is connected to the power supply 200, and the output terminal of the linear control component 25 is connected to the control terminal of the second switch component 27. The output terminal of the second switch component 27 serves as the output terminal of the linear constant current control module 13 and is connected to the power supply terminal of the color temperature switching module 11 and the power supply terminal of each light source module 12.

[0068] In this embodiment, the voltage drop detection component 26 is used to detect the output voltage of the linear constant current control module 13. The linear control component 25 is used to send a third control signal to the second switching component 27 based on the output voltage, and adjust the conduction state of the second switching component 27 to output a constant supply current of a preset value.

[0069] refer to Figure 9 , Figure 9This diagram illustrates another circuit schematic of the multi-lamp source switching control circuit provided in this embodiment of the present invention. When the linear control component 25 includes the first processing chip IC5, the voltage drop detection component 26 includes a seventh resistor RS1 and an eighth resistor RS2 connected in parallel, and the second switching component 27 includes a third switching transistor Q1. The output pin (i.e., the fourth pin) of the first processing chip IC5 is connected to the control terminal of the third switching transistor Q1, and the first terminal of the third switching transistor Q1 is connected to the first terminal of the seventh resistor RS1 and the eighth resistor RS2 connected in parallel. The second terminals of the seventh resistor RS1 and the eighth resistor RS2 connected in parallel are grounded. The second terminal of the third switching transistor Q1 is connected to the color temperature control component 22.

[0070] In this embodiment, the linear constant current control module 13 also includes multiple discharge channels composed of resistors. Please refer to [link / reference needed]. Figure 9 The linear constant current control module 13 also includes a ninth resistor R7, a tenth resistor R10, an eleventh resistor R12, and a fifth capacitor C8. The first end of the ninth resistor R7 and the first end of the tenth resistor R10 are both connected to the third pin of the first processing chip IC5; the first end of the eleventh resistor R12 is connected to the second pin of the first processing chip IC5; the second end of the tenth resistor R10 and the second end of the eleventh resistor R12 are also connected to the first ends of the seventh resistor RS1 and the eighth resistor RS2, which are set in parallel.

[0071] In addition, continue to refer to Figure 9 The linear constant current control module 13 also includes a fifth diode D1, a sixth diode D3, a sixth capacitor C10, a twelfth resistor R6, a thirteenth resistor R9, a fourteenth resistor R11, a fifteenth resistor R1, a sixteenth resistor R5, and a seventeenth resistor R2. The fifth diode D1 and the sixth diode D3 are connected in parallel. The anode of the fifth diode D1 is connected to the output terminal of the power supply, and the cathode of the fifth diode D1 is connected to the first terminal of the ninth resistor R7. The first terminal of the twelfth resistor R6 is connected to the anode of the fifth diode D1, the first terminal of the fifteenth resistor R1, and the first terminal of the seventeenth resistor R2. The first end is connected; the second end of the twelfth resistor R6 is connected to the first end of the thirteenth resistor R9; the second end of the thirteenth resistor R9 is connected to the first end of the fourteenth resistor R11, the first end of the sixth capacitor C10, and the first pin of the first processing chip IC5; the second end of the fourteenth resistor R11 is connected to the second end of the sixth capacitor C10 and grounded; the second end of the fifteenth resistor R1 is connected to the first end of the sixteenth resistor R5; the second end of the sixteenth resistor R5 is connected to the eighth pin of the first processing chip IC5; and the second end of the seventeenth resistor R2 is connected to the seventh pin of the first processing chip IC5.

[0072] Among them, the zero pin of the first processing chip IC5 is also connected to its own fifth pin and grounded.

[0073] Please continue to refer to this. Figure 9 This embodiment also includes a seventh capacitor CE1 and an eighteenth resistor RL1. The first end of the seventh capacitor CE1 is connected to the first end of the eighteenth resistor RL1 and the cathode of the sixth diode D3. The second end of the seventh capacitor CE1 is connected to the second end of the eighteenth resistor RL1 and the second end of the third switch Q1.

[0074] In this embodiment, the seventh capacitor CE1 and the eighteenth resistor RL1 constitute a filter component, wherein the seventh capacitor CE1 is a filter capacitor and the eighteenth resistor RL1 is a release resistor of the seventh capacitor CE1.

[0075] In this embodiment, the first processing chip IC5 is the core, which controls the third switch Q1. That is, the first processing chip IC5 controls the conduction degree of the third switch Q1 by detecting the voltage drop across the seventh resistor RS1 and the eighth resistor RS2, thereby keeping the operating current of the subsequent light source module within a certain range, so that the output power of the lamps using the above-mentioned multi-lamp source switching control circuit is kept within a constant range.

[0076] In this embodiment, the ninth resistor R7, the tenth resistor R10, and the eleventh resistor R12 act as voltage divider resistors, each forming a discharge channel to compensate for the Bleeder current.

[0077] In this embodiment, the eleventh resistor R12 can be used to set the sampling resistor for the working current of the subsequent light source module, and the seventh resistor RS1 and the eighth resistor RS2 are the corresponding sampling resistors.

[0078] In this embodiment, the fifteenth resistor R1 and the twelfth resistor R6 are made of silicon controlled rectifiers (SCRs) and can be used as current-limiting resistors in the linear constant current control module 13. The ninth resistor R7 is the high-voltage waveform sampling resistor, used to track the power factor of the linear constant current control module 13. The thirteenth resistor R9 can be used for power compensation. The fifth diode D1 and the sixth diode D3 can be used to achieve filtering and isolation.

[0079] To improve device efficiency, please... Figure 9 Based on, refer to Figure 10 , Figure 10This diagram illustrates another circuit schematic of the multi-lamp source switch switching control circuit provided in this embodiment. In this embodiment, an AC-DC conversion module 14 can be added after the main control switch SC. In this embodiment, the AC-DC conversion module 14 may include a fuse F1, a rectifier bridge unit 28, a varistor RV1, and a filter capacitor CBB1. The first end of the fuse F1 is connected to the output terminal of the main control switch SC, and the input terminal of the main control switch SC is connected to the positive output terminal of the power supply current. The second end of the fuse F1 is connected to the first end of the rectifier bridge unit 28, the first end of the varistor RV1, and the first end of the filter capacitor CBB1. The third end of the rectifier bridge unit 28 is connected to the second end of the varistor RV1 and the second end of the filter capacitor CBB1. The fourth end of the rectifier bridge unit 28 is grounded, and the second end of the rectifier bridge unit 28 is used to output the converted DC signal, which is connected to the input terminal of the linear constant current control module 13. The DC signal is adjusted to a constant output current by the linear constant current control module 13 to power the color temperature switching module 11, the light source module 12, etc.

[0080] To ensure the stable operation of each light source module, please refer to... Figure 11 , Figure 11 This diagram illustrates another circuit schematic of the multi-light source switch switching control circuit provided in this embodiment of the present invention. In this embodiment, the multi-light source switch switching control circuit 100 further includes a flicker suppression module 15, which includes a seventh diode D2 and multiple parallel-connected drive components 29. The anode of the seventh diode D2 is connected to the power supply 200, the cathode of the seventh diode D2 is connected to the first end of the multiple parallel-connected drive components 29, and the second end of the multiple parallel-connected drive components 29 is connected to the input end of each light source module 12.

[0081] It should be noted that the power supply actually refers to the constant current after being adjusted by the linear constant current control module.

[0082] Please refer to Figure 12 , Figure 12 This diagram illustrates another circuit schematic of the multi-light source switch switching control circuit provided in this embodiment of the present invention. In this embodiment, the multi-light source switch switching control circuit 100 further includes a color temperature control module 16, which can be used to set the color temperature state corresponding to the light source module.

[0083] Please continue to refer to this. Figure 12The color temperature control module 16 includes a first switch K1 and multiple color temperature adjustment units 30 with resistors connected in parallel. The first switch K1 is a linkage switch that adjusts the series connection of the resistors in the corresponding color temperature adjustment unit. When two color temperature adjustment units are included, these two units can be composed of a nineteenth resistor R14, a twentieth resistor RA1, a twenty-first resistor RB1, a twenty-second resistor RC1, a twenty-third resistor RE1, a twenty-fourth resistor RF1, a twenty-fifth resistor RJ1, and a twenty-sixth resistor RH1. The corresponding linkage switch includes 12 contacts, with at least 10 contacts corresponding to one resistor. Correspondingly, the output terminal of any color temperature adjustment unit is also connected to the corresponding light source module 12 via an eighth diode DA1.

[0084] In summary, this embodiment can adjust the resistance values ​​between the resistors connected in series with the light source module 12 according to different switch positions of the first switch K1, thereby adjusting the working current of each link and allocating different color temperatures, including pure white and warm white, to the corresponding light source module 12.

[0085] In summary, please refer to the following: Figure 13 , Figure 13 This diagram illustrates another circuit schematic of the multi-source lamp switching control circuit provided in this embodiment. The multi-source lamp switching control circuit in this embodiment includes a color temperature switching module 11, a linear constant current control module 13, a flicker suppression module 15, an AC-DC conversion module 14, a color temperature control module 16, and multiple light source modules 12. The corresponding connection settings can be found in the specific descriptions of the above embodiments. Further details are omitted here.

[0086] Based on this, this application adds a color temperature control component that stores the initial lighting mode (memorized lighting mode), and controls the switching transistor of the corresponding light source module to turn on when different trigger signals and / or combinations of trigger signals are received from the switch detection component, so as to complete the switching from the initial lighting mode to the target lighting mode. In this way, in situations where a specific lighting environment needs to be maintained, the actual needs of users for remembering and flexibly switching lighting modes can be met.

[0087] Secondly, this utility model also provides a multi-light source switch switching control device, please refer to... Figure 14 , Figure 14 A block diagram of a multi-light source switch switching control device provided in an embodiment of the present invention is shown. The multi-light source switch switching control device 10 includes a power supply 200 and the aforementioned multi-light source switch switching control circuit 100. The power supply 200 is connected to the input terminal of the multi-light source switch switching control circuit 100.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-lamp source switching control circuit, characterized in that, include: The system includes a color temperature switching module and multiple light source modules, each corresponding to a lighting mode; the color temperature switching module includes a color temperature control component; the color temperature control component is connected to the control terminal of each of the light source modules. When the color temperature control component receives a first trigger signal and a second trigger signal within a preset time period, the color temperature control component sends a first control signal group to each of the light source modules to control the target light source module among the multiple light source modules to be turned on, and controls the other light source modules except the target light source module to be turned off, so as to switch the multi-light source switch control circuit from the initial illumination mode to the target illumination mode; the initial illumination mode is the illumination mode memorized in the color temperature control component; And / or when the color temperature control component receives a first trigger signal and receives a second trigger signal after a preset time period, the color temperature control component sends a second control signal group to each of the light source modules to control the initial light source module among the multiple light source modules to be turned on, and controls the remaining light source modules other than the initial light source module to be turned off, so as to keep the multi-light source switch switching control circuit in the initial illumination mode. The first trigger signal and the second trigger signal are complementary signals.

2. The multi-lamp source switch switching control circuit according to claim 1, characterized in that, The first trigger signal is a low-level signal, the second trigger signal is a high-level signal, and the initial lighting mode is the main light mode, while the target lighting mode is the night light mode. When the color temperature control component receives a low-level signal and receives a high-level signal within a preset time period, the color temperature control component sends a first control signal group to each of the light source modules, controlling the first light source module among the multiple light source modules to be turned on, and controlling all other light source modules except the first light source module to be turned off; wherein, the first light source module is used to characterize the light source module corresponding to the night light mode; And / or when the color temperature control component receives a low-level signal and receives a high-level signal after a preset time period, the color temperature control component sends a second control signal group to each of the light source modules, controls the second light source module among the plurality of light source modules to be turned on, and controls all other light source modules except the second light source module to be turned off; wherein, the second light source module is used to characterize the light source module corresponding to the main light mode.

3. The multi-lamp source switch switching control circuit according to claim 1 or 2, characterized in that, The color temperature switching module includes a switch detection component and a first switch component. The first switch component includes multiple switching transistors, each of which is connected to a corresponding light source module. The color temperature control component is connected to the transmitting end of the switch detection component and the control end of each of the switching transistors. The switch detection component is used to detect the power-on / power-off state of the power supply and send the first trigger signal or the second trigger signal to the color temperature control component accordingly. When the color temperature control component receives the first trigger signal and receives the second trigger signal within a preset time period, the color temperature control component sends the first control signal group to all switching tubes to switch the multi-lamp source switching control circuit from the initial illumination mode to the target illumination mode. And / or when the color temperature control component receives the first trigger signal and receives the second trigger signal after a preset time period, the color temperature control component sends a second control signal group to all switching tubes to keep the multi-lamp source switching control circuit in the initial illumination mode.

4. The multi-lamp source switch switching control circuit according to claim 3, characterized in that, The switch detection component includes a first resistor, a second resistor, a first capacitor, a first diode, and a second diode; the first end of the first resistor is connected to the power supply; the second end of the first resistor is connected to the anode of the first diode; the cathode of the first diode is connected to the first end of the first capacitor, the first end of the second resistor, the cathode of the second diode, and the receiving end of the color temperature control component; the second end of the first capacitor is connected to the second end of the second resistor and the anode of the second diode and grounded.

5. The multi-lamp source switch switching control circuit according to claim 1, characterized in that, The color temperature switching module also includes an energy storage component. The output terminal of the energy storage component is connected to the power supply terminal of the color temperature control component, and the input terminal of the energy storage component is connected to the power supply. The energy storage component is used to maintain the operating power of the color temperature control component within a preset time interval when the power supply is in a powered-off state.

6. The multi-lamp source switch switching control circuit according to claim 5, characterized in that, The energy storage component includes a capacitor unit, a resistor unit, a third diode, and a fourth diode. The capacitor unit includes multiple capacitors connected in parallel. The first end of the resistor unit is connected to the power supply. The second end of the resistor unit is connected to the cathode of the fourth diode and the anode of the third diode. The cathode of the third diode is connected to the first end of the multiple capacitors connected in parallel. The anode of the fourth diode is connected to the second end of the multiple capacitors connected in parallel.

7. The multi-lamp source switch switching control circuit according to claim 1 or 2, characterized in that, The multi-lamp source switching control circuit also includes a linear constant current control module. The linear constant current control module includes a linear control component, a voltage drop detection component, and a second switching component. The input terminal of the linear control component is connected to the power supply, and the output terminal of the linear control component is connected to the control terminal of the second switching component. The output terminal of the second switching component serves as the output terminal of the linear constant current control module and is connected to the power supply terminal of the color temperature switching module and the power supply terminal of each light source module. The voltage drop detection component is used to detect the output voltage of the linear constant current control module; The linear control component is used to send a third control signal to the second switching component based on the output voltage, adjust the conduction state of the second switching component, and output a constant supply current of a preset value.

8. The multi-lamp source switch switching control circuit according to claim 7, characterized in that, When the linear control component includes a first processing chip, the voltage drop detection component includes a seventh resistor and an eighth resistor connected in parallel, and the second switching component includes a third switching transistor; the output pin of the first processing chip is connected to the control terminal of the third switching transistor, the first terminal of the third switching transistor is connected to the first terminal of the seventh resistor and the eighth resistor connected in parallel; the second terminals of the seventh resistor and the eighth resistor connected in parallel are grounded.

9. The multi-lamp source switch switching control circuit according to claim 1 or 2, characterized in that, The multi-lamp source switching control circuit also includes a flicker suppression module, which includes a seventh diode and multiple parallel-connected driving components. The anode of the seventh diode is connected to the power supply, the cathode of the seventh diode is connected to the first end of the multiple parallel-connected driving components, and the second end of the multiple parallel-connected driving components is connected to the input end of the light source module.

10. A multi-light source switch switching control device, characterized in that, It includes a power supply and a multi-lamp source switch switching control circuit as described in any one of claims 1 to 9, wherein the power supply is connected to the input terminal of the multi-lamp source switch switching control circuit.

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