Control signal generation circuit and lighting control circuit

Abstract

This application discloses a control signal generation circuit and a lighting control circuit. The control signal generation circuit includes a main power supply module, a signal generation module, and a signal control module. The output terminal of the main power supply module is used to output power. The signal generation module includes a timing unit and a delay unit. The input terminal of the timing unit is connected to the output terminal of the main power supply module, and the signal terminal of the delay unit is connected to the output terminal of the main power supply module. The timing unit is used to detect the power supply. When the timing unit detects that the power supply is less than a preset threshold, it generates a power-off signal. The timing unit is also used to start timing according to the power-off signal. The delay unit is used to convert stored electrical energy into a sustaining power when the main power supply module stops supplying power. The signal control module is used to generate a control signal according to the timing signal, thereby disconnecting the power supply of the signal control module when the system is powered off to save energy and simultaneously monitor the power-off state of the system.

Description

Technical Field

[0001] This application relates to the field of signal control technology, and more specifically, to a control signal generation circuit and a lighting control circuit. Background Technology

[0002] In related technologies, in order to achieve real-time monitoring of the power-off state of equipment, it is usually necessary to keep the relevant signal control modules in a standby power-on state for a long time.

[0003] However, this continuous standby power consumption causes the entire system to generate unnecessary energy consumption during the power outage, significantly reducing the system's energy efficiency and failing to meet the design requirements of modern equipment for low power consumption and energy conservation. Utility Model Content

[0004] In view of the above problems, this utility model proposes a control signal generation circuit and a lighting control circuit.

[0005] In a first aspect, embodiments of this application provide a control signal generation circuit, wherein the control signal generation circuit includes: a main power supply module, a signal generation module, and a signal control module. The main power module has the following components: an input terminal for connecting to an input power source, a output terminal for outputting the power supply; a signal generation module for connecting a timing unit and a delay unit; an input terminal for connecting the timing unit to the output terminal of the main power module, and a signal terminal for the delay unit to the output terminal of the main power module; a timing unit for detecting the power supply, generating a power-off signal when the power supply is below a preset threshold; a timing unit for starting timing based on the power-off signal; a timing unit for generating a power-on signal when the power supply is above or equal to a preset threshold; a timing unit for stopping timing based on the power-on signal and generating a timing signal; and an output terminal for outputting the timing signal. The delay unit converts the power supply into stored energy, and converts the stored energy into a sustaining power source when the main power module stops supplying power, outputting the sustaining power source through its signal terminal. The signal control module has its power supply terminal connected to the output terminal of the main power module, and its signal terminal connected to the output terminal of the timing unit. The signal control module generates a control signal based on the timing signal, and its output terminal outputs the control signal.

[0006] Secondly, embodiments of this application also provide a lighting control circuit, including the control signal generation circuit, lighting control module, and lighting module described in the first aspect; wherein, the input terminal of the lighting control module is connected to the output terminal of the signal control module of the control signal generation circuit, the lighting control module is used to acquire the control signal generated by the signal control module, and the lighting control module is used to generate a drive signal according to the control signal; the output terminal of the lighting control module is used to output the drive signal; the control terminal of the lighting module is connected to the output terminal of the lighting control module, and the lighting module is used to operate according to the drive signal.

[0007] The technical solution provided by this utility model includes a control signal generation circuit comprising: a main power supply module, a signal generation module, and a signal control module. The input terminal of the main power supply module is used to connect to an input power supply, and the main power supply module is used to convert the input power supply into a power supply. The output terminal of the main power supply module is used to output the power supply. The signal generation module includes a timing unit and a delay unit. The input terminal of the timing unit is connected to the output terminal of the main power supply module, and the signal terminal of the delay unit is connected to the output terminal of the main power supply module, and the signal terminal of the delay unit is also connected to the input terminal of the timing unit. The timing unit is used to generate a power-off signal based on the main power supply at the input terminal of the timing unit. The timing unit is also used to start timing based on the power-off signal. The unit is also used to generate a power-on signal based on the total power supply at the input terminal of the timing unit; the timing unit is also used to stop timing based on the power-on signal and generate a timing signal; the output terminal of the timing unit is used to output the timing signal; the delay unit is used to convert the power supply into stored energy and convert the stored energy into a sustaining power supply, and output the sustaining power supply through the signal terminal of the delay unit; the power supply terminal of the signal control module is connected to the output terminal of the total power supply module, and the signal terminal of the signal control module is connected to the output terminal of the timing unit. The signal control module is used to generate a control signal based on the timing signal, so that when the system is powered off, the power supply of the signal control module is disconnected to save energy consumption. At the same time, the system power-off status can be monitored. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments and drawings obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0009] Figure 1 A schematic diagram of a control signal generation circuit according to an embodiment of this application is shown.

[0010] Figure 2A schematic diagram of the structure of a delay unit provided in an embodiment of this application is shown.

[0011] Figure 3 A schematic diagram of the structure of a total power module provided in an embodiment of this application is shown.

[0012] Figure 4 A schematic diagram of a control circuit provided in an embodiment of this application is shown.

[0013] Figure 5 A schematic diagram of another total power module provided in an embodiment of this application is shown.

[0014] Figure 6 A schematic diagram of another total power module provided in an embodiment of this application is shown.

[0015] Figure 7 A schematic diagram of another power supply module provided in an embodiment of this application is shown.

[0016] Figure 8 A schematic diagram of the structure of a lighting control module provided in an embodiment of this application is shown.

[0017] Figure 9 A schematic diagram of the structure of a lighting module provided in an embodiment of this application is shown.

[0018] Figure 10 A schematic diagram of another lighting module provided in an embodiment of this application is shown. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0020] In related technologies, in order to achieve real-time monitoring of the power-off status of equipment, it is usually necessary to keep the relevant signal control module in a standby power-on state for a long time, and the signal control module monitors the power-on and power-off status of the equipment.

[0021] However, the signal control module consumes a lot of power. If the device is in a power-off state for a long time, the signal control module will be in a power-on state for a long time, resulting in continuous standby power consumption.

[0022] This continuous standby power consumption causes the entire system to generate unnecessary energy consumption during the power outage, significantly reducing the system's energy efficiency and failing to meet the design requirements of modern equipment for low power consumption and energy conservation.

[0023] To address the aforementioned problems, the inventors have proposed a control signal generation circuit and a lighting control circuit as provided in this application. The control signal generation circuit includes a main power supply module, a signal generation module, and a signal control module. The main power supply module's input terminal is connected to an input power source, and it converts the input power source into a power supply. Its output terminal is used to output the power supply. The signal generation module includes a timing unit and a delay unit. The timing unit's input terminal is connected to the main power supply module's output terminal, and the delay unit's signal terminal is connected to both the main power supply module's output terminal and the timing unit's input terminal. The timing unit detects the power supply. When the timing unit detects... When the power supply is less than a preset threshold, a power-off signal is generated. The timing unit is also used to start timing based on the power-off signal. The delay unit is used to convert the power supply into stored energy and to convert the stored energy into sustaining energy when the main power module stops supplying power, and outputs the sustaining energy through the signal terminal of the delay unit. The power supply terminal of the signal control module is connected to the output terminal of the main power module, and the signal terminal of the signal control module is connected to the output terminal of the timing unit. The signal control module is used to generate a control signal based on the timing signal, and the output terminal of the signal control module is used to output the control signal. Thus, when the system is powered off, the power supply of the signal control module is disconnected to save energy. At the same time, the power-off status of the system can be monitored.

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0025] Please see Figure 1 This application provides a schematic diagram of the structure of a control signal generation circuit 100. For example... Figure 1 As shown, the control signal generation circuit 100 includes: a main power supply module 110, a signal generation module 120, and a signal control module 130.

[0026] The main power module 110 has an input terminal 110a for connecting to an input power source, which converts the input power source into a power supply, and an output terminal 110b for outputting the power supply.

[0027] The input power supply can be AC ​​mains power, which is a residential or industrial AC power supply network. Its nominal voltage varies depending on the regional standard, typically ranging from 100V to 240V, with a frequency of 50Hz or 60Hz. The specific settings can be configured according to the actual usage scenario. For example, 220V, 50Hz AC power can be used.

[0028] The main power module 110 is used to convert the input power into the power supply required for the operation of the signal generation module 120 and the signal control module 130 (e.g., 3.3V) to provide the power support required for the operation of the signal generation module 120 and the signal control module 130.

[0029] In some embodiments, the main power module 110 may employ a combination of circuit modules with rectification and transformation functions to convert the input power into a suitable power supply. For example, electronic devices such as rectifier bridges, transformers, and diodes may be used, and the specific configuration can be determined according to actual needs; this application does not impose any limitations on this.

[0030] It is understood that the main power module 110 may also include other circuit components, such as overcurrent protection modules (e.g., fuses) for safety monitoring, voltage regulator modules (e.g., voltage regulator resistors) for maintaining a constant power supply, etc. The specific configuration can be made according to actual usage needs, and this application does not impose any restrictions on this.

[0031] The signal generation module 120 can monitor the power-on and power-off status of the main power module 110 and maintain a working state for a preset time when the main power module 110 stops supplying power, so as to time the power-off time of the main power module 110.

[0032] In the embodiments of this application, the signal generation module 120 includes a timing unit 121 and a delay unit 122; the input terminal 121a of the timing unit is connected to the output terminal 110b of the main power module, and the signal terminal 122a of the delay unit is connected to the output terminal 110b of the main power module.

[0033] The timing unit 121 is used to generate a power-off signal based on the power supply of the input terminal 121a of the timing unit; the timing unit 121 is also used to start timing based on the power-off signal.

[0034] The timing unit 121 is also used to generate a power-on signal based on the power supply of the input terminal 121a of the timing unit; the timing unit 121 is also used to stop timing based on the power-on signal and generate a timing signal; the output terminal 121b of the timing unit is used to output the timing signal.

[0035] In some implementations, the timing unit 121 may include a comparison subunit, one end of which is connected to the output terminal 110b of the main power module. The comparison subunit can compare the value of the input signal with a preset threshold.

[0036] When the value of the input signal is less than a preset threshold (e.g., less than 3.3V), the output terminal of the comparator unit outputs a power-off signal (e.g., a high-level signal).

[0037] The timing unit 121 may also include a timer, the input of which is connected to the output of the comparator subunit. When the input of the timer receives a power-off signal, the timing is started.

[0038] When the value of the input signal is greater than or equal to a preset threshold, the output of the comparison subunit outputs a power-on signal (e.g., a low-level signal). When the input of the timer receives the power-on signal, it stops timing and generates a timing signal. The timing signal represents the duration of the power outage of the main power module. The output of the timer is connected to the signal control module 130 to transmit the timing signal to the signal control module 130.

[0039] In other embodiments, the timing unit 121 may also include a chip with timing function. The power supply terminal of the chip is connected to the output terminal 110b of the main power module. The chip has a built-in power monitoring circuit. When the chip detects that the voltage at the power supply terminal is less than a preset threshold, the chip starts the timer to start timing. When the chip detects that the voltage at the power supply terminal is greater than or equal to the preset threshold, the chip stops the timer and outputs a timing signal to the signal control module 130 through the output terminal of the chip.

[0040] For example, the timing unit 121 can use an HC89F chip, wherein the VDD pin of the HC89F chip can be connected to the output terminal 110b of the main power module, and the P2.0 pin of the HC89F chip can be used to output a timing signal to the signal control module 130. Furthermore, the P0.4 pin of the HC89F chip can be used to receive relevant signals from the signal control module 130, which is not limited in this application.

[0041] When the main power module 110 is supplying power normally, the delay unit 122 can convert the power supplied by the main power module 110 into stored electrical energy. When the main power module 120 stops supplying power, the delay unit 122 can convert the stored electrical energy into a sustaining power supply and output the sustaining power supply through the signal terminal 122a of the delay unit 122. The sustaining power supply can maintain the power supply state of the timing unit 121 for a preset time, so that the timing unit 121 can time the power outage time of the main power module 110 during the power outage period.

[0042] In some implementations, the delay unit 122 may include an energy storage device, such as a capacitor or an inductor. The capacitance or inductance value can be set according to the required duration, specifically based on actual usage needs. For example, if the timing unit 121 needs to time for at least 5 seconds during a power outage of the main power module 110, then the delay unit 122 needs to provide the stored energy required for more than 5 seconds of operation. An appropriate capacitor or inductor of suitable size can be selected based on the required amount of stored energy. For example, an electrolytic capacitor with a capacitance of 680μF can be used.

[0043] The power supply terminal 130a of the signal control module 130 is connected to the output terminal 110b of the main power module. The main power module 110 provides the power support required for the operation of the signal control module 130. It can be understood that when the main power module 110 is powered off, there is no signal output at the output terminal 110b of the main power module, and the signal control module 130 has no power support and is also in a stopped state. When the main power module 110 is in a powered-off state for a long time, the signal control module 130 is also in a stopped state, which can save energy.

[0044] The signal terminal of the signal control module 130 is connected to the output terminal 121b of the timing unit. When the main power module 110 restores power, the timing unit 121 generates a timing signal and sends it to the signal control module 130. The signal control module 130 can trigger corresponding operations based on the timing signal, such as mode switching or function triggering. Thus, when the main power module 110 is in a power-off state, the timing unit 121 can monitor the power-off state.

[0045] The signal control module 130 can be implemented using a chip, and the appropriate chip can be selected according to the actual application scenario. The signal control module 130 can also have wireless communication capabilities, for example, it can use a chip with a WIFI module. In some implementations, such as in lighting control scenarios, the H1008 chip can be used. The IO18 / USB_D- pin of the H1008 chip can be connected to the output terminal 121b of the timing unit 121 to read the timing signal output by the timing unit 121. The H1008 chip can generate corresponding control signals based on the timing signals and output the control signals through the IO10 / FSPICS0 pin of the H1008 chip.

[0046] Please see Figure 2 This application provides a schematic diagram of the structure of a delay unit 122. For example... Figure 2 As shown, in some embodiments, the delay unit 122 includes a diode 1221 and a first capacitor 1222. The anode of the diode is connected to the output terminal 110b of the main power module, and the cathode of the diode 1221 is connected to the input terminal 121a of the timing unit. The first terminal of the first capacitor 1222 is connected to the cathode of the diode 1221, and the second terminal of the first capacitor 1222 is used to ground GND.

[0047] When the main power module 110 is powered normally, the power supply charges the first capacitor 1222 through the diode 1221. The first capacitor 1222 converts the power supply into stored energy. When the main power module 110 is powered off, the first capacitor 1222 discharges and converts the stored energy into a sustaining power supply to maintain the power supply of the timing unit.

[0048] In some implementations, the capacitance of the first capacitor 1222 can be set according to the stored energy required for the delay. For example, if the chip with an operating voltage of 3.3V is delayed for at least 5 seconds, a capacitor with a capacitance of 680μF can be selected.

[0049] Furthermore, the delay unit 122 may also include a second capacitor connected in parallel with the first capacitor 1222. The second capacitor can be used to absorb high-frequency interference and reduce the false triggering rate caused by power grid jitter. For example, a capacitor with a capacitance of 100μF can be used.

[0050] Please see Figure 3 This application provides a schematic diagram of the structure of a main power module 110. For example... Figure 3 As shown, in some embodiments, the main power module 110 includes a first power submodule 111 and a second power submodule 112.

[0051] The first power supply submodule has an input terminal 111a for connecting to an input power source, which converts the input power source into a first power source. The first power supply submodule also has an output terminal 110b for outputting the first power source. For example, the input power source can be converted into a 30V first power source.

[0052] In some embodiments, the first power supply submodule 111 may employ a combination of circuit modules with rectification and transformation functions to convert the input power supply into a suitable first power supply. For example, electronic devices such as rectifier bridges, transformers, and diodes may be used, and the specific configuration can be determined according to actual needs; this application does not impose any limitations on this. It is understood that the first power supply submodule 111 may also include other circuit components, such as overcurrent protection modules (e.g., fuses) for safety monitoring, and voltage regulation modules (e.g., voltage regulator resistors) for maintaining a constant power supply; the specific configuration can be determined according to actual usage needs, and this application does not impose any limitations on this.

[0053] The second power supply submodule 112 includes a DC-DC converter unit 1121. The input terminal 1121a of the DC-DC converter unit is connected to the output terminal 111b of the first power supply submodule. The DC-DC converter unit is used to convert the first power supply into a power supply. For example, it can convert the 30V first power supply into a 3.3V power supply.

[0054] For example, the second power supply submodule 112 can use a chip with DC-DC conversion function, such as BP1401. The Vin pin of the BP1401 chip is used to connect to the output terminal 111b of the first power supply submodule, the RY8411 chip is used to convert the first power supply into a power supply, and the SW pin of the RY8411 chip is used to output the power supply.

[0055] The control signal generation circuit 100 provided in this application embodiment can be applied to application scenarios that require real-time monitoring of the power-off state of devices, such as lighting scenarios, where users can switch lighting modes by controlling the power-on and power-off state of the device; or in security scenarios, where users can trigger security levels by controlling the duration of the power-on and power-off state of the device. It can also be applied to wearable devices, where users can trigger related functions by controlling the power-on and power-off state of the device, and this application does not impose any limitations on these applications.

[0056] Please see Figure 4 , Figure 4 A schematic diagram of a lighting control circuit 200 provided in an embodiment of this application is shown, as follows: Figure 4 As shown, the lighting control circuit 200 includes the aforementioned control signal generation circuit 100, lighting control module 210, and lighting module 220. The input terminal 210a of the lighting control module 210 is connected to the signal control module 130 of the control signal generation circuit 100. The lighting control module 210 is used to acquire the control signal generated by the signal control module 130 and to generate a drive signal based on the control signal. The output terminal 210b of the lighting control module 210 is used to output the drive signal. The control terminal 220a of the lighting module 220 is connected to the lighting control module 210, and the lighting module 220 is used to operate according to the drive signal.

[0057] In the embodiments of this application, the control signal generation circuit 100 can be applied to lighting scenarios. When the user briefly switches the power supply on and off, the signal control module can be triggered to generate a control signal, such as switching the lighting mode. For example, the user can control the on / off state of the input power supply of the main power module 110 of the control signal generation circuit 100. For example, disconnecting the input power supply and reconnecting it will trigger the signal generation module 120 to generate a timing signal. The signal control module 130 can then generate a control signal based on the timing signal. For example, if the timing signal indicates that the power outage time is within a preset threshold, a control signal for switching the lighting mode (e.g., switching from daylight mode to night mode) will be triggered. The lighting control module 210 can generate a drive signal based on the control signal to drive the lighting module 220 to operate according to the drive signal.

[0058] Please see Figure 5 , Figure 5 This paper shows a schematic diagram of another main power module 110 provided in an embodiment of this application, as shown below. Figure 5 As shown, in some embodiments, the total power supply module 110 of the control signal generation circuit 100 includes: a first power supply submodule 111, a second power supply submodule 112, and a third power supply submodule 113.

[0059] The first power supply submodule has an input terminal 111a for connecting to an input power source, and an output terminal 111b for converting the input power source into a first power source. For example, the input power source can be converted into a 30V first power source. See the detailed description of the above embodiment for further details.

[0060] The second power supply submodule 112 includes a DC-DC converter unit 1121. The input terminal 1121a of the DC-DC converter unit is connected to the output terminal 111b of the first power supply submodule. The DC-DC converter unit 1121 is used to convert the first power supply into a power supply. For example, it can convert a 30V first power supply into a 3.3V power supply. For details, please refer to the detailed description of the above embodiment.

[0061] The input terminal 113a of the third power supply submodule is connected to the output terminal 111b of the first power supply submodule. The third power supply submodule 113 is used to convert the first power supply into the second power supply, and the output terminal 113b of the third power supply submodule is used to output the second power supply.

[0062] The output terminal 113b of the third power supply submodule is connected to the power supply terminal 220b of the lighting module and the control power supply terminal 210c of the lighting control module, respectively. The third power supply submodule 113 is used to provide the power support required for the operation of the lighting module 220 and the lighting control module 210.

[0063] It is understood that the voltage values ​​of the first power supply, the second power supply, and the power supply are different. In other embodiments, if the lighting control circuit 200 requires power supply of other sizes, it can be provided by adding corresponding power supply sub-modules. This application does not limit this.

[0064] Please see Figure 6 , Figure 6 This paper shows a schematic diagram of the structure of another type of main power module 110 provided in an embodiment of this application, as shown below. Figure 6As shown, in some embodiments, the third power supply submodule 113 further includes an on / off control terminal 113c, and the lighting control module 210 further includes a power control terminal 210d. The signal control module 130 can output a power on / off control signal to the on / off control terminal 113c of the third power supply submodule through the power control terminal 130d. The power on / off control signal can control the on / off state of the third power supply submodule 113. When the third power supply submodule 113 is in the on state, the third power supply submodule 113 can output a third power supply; when the third power supply submodule 113 is in the off state, the third power supply submodule 113 cannot output a third power supply. For example, when the on / off control signal is high, the third power supply submodule 113 can be controlled to be in the on state; when the on / off control signal is low, the third power supply submodule 113 can be controlled to be in the off state.

[0065] Optionally, the third power supply submodule 113 may include a switch control unit disposed between the input terminal 113a and the output terminal 113b of the third power supply submodule. The switch control unit may receive a power on / off control signal sent by the signal control module 130, and conduct or disconnect the path between the input terminal 113a and the output terminal 113b of the third power supply submodule according to the power on / off control signal.

[0066] Optionally, the switch control unit may be implemented using one or more switching devices such as switching transistors (e.g., triodes, MOSFETs, etc.), diodes, or switches, and this application does not impose any restrictions on this.

[0067] In some implementations, the lighting control module 210 requires power supplies of various sizes. For example, the lighting control section and the driving section of the lighting control module 210 use different power supplies. Therefore, a fourth power submodule 114 can be set up through the main power module 110 to provide power support for the driving section of the lighting control module 210.

[0068] 7 Please refer to Figure 7 , Figure 7 This paper shows a schematic diagram of another type of main power module 110 provided in an embodiment of this application, as shown below. Figure 7 As shown, the main power module 110 also includes a fourth power submodule 114. The input terminal 114a of the fourth power submodule is connected to the output terminal 113b of the third power submodule. The fourth power submodule 114 is used to convert the second power supply into the third power supply, and its output terminal 114b is used to output the third power supply. The output terminal 114b of the fourth power submodule is connected to the drive power terminal 210d of the lighting control module. The fourth power submodule 114 can convert the second power supply into the third power supply, for example, it can convert it into a 5V power supply.

[0069] For example, the fourth power supply submodule 114 can use a chip with DC-DC conversion function, such as the RY8411 chip. The Vin pin of the RY8411 chip is used to connect to the output terminal 1137b of the third power supply submodule. The RY8411 chip is used to convert the second power supply into the third power supply, and the SW pin of the RY8411 chip is used to output the third power supply.

[0070] Please see Figure 8 , Figure 8 This paper shows a schematic diagram of the structure of a lighting control module 210 provided in an embodiment of this application, as shown below. Figure 8 As shown, the lighting control module 210 includes a drive unit 211 and a lighting control unit 212. The input terminal 211a of the drive unit is connected to the output terminal 113c of the signal control module, and the input terminal 211a of the drive unit is used to receive control signals. The drive unit 211 is used to convert the control signals into drive control signals. The input terminal 212a of the lighting control unit is connected to the output terminal 211b of the drive unit, and the lighting control unit 212 is used to generate drive signals according to the control signals.

[0071] The signal control module 130 and the lighting control unit 212 that drives the lighting module 220 operate at different voltages. In particular, the lighting control unit 212 generates high-frequency switching noise when it is working. If the control signal of the signal control module 130 is directly transmitted to the lighting control unit 212, it may damage the signal control module 130.

[0072] To achieve electrical isolation, ensure signal integrity, and for safety considerations, the lighting control module 210 is equipped with a separate drive unit 211 for receiving control signals, and the drive unit 211 is powered independently, that is, the drive unit 211 and the signal control module 113 use different power supplies.

[0073] The drive unit 211 converts the control signal into a drive control signal, such as by shaping the control signal, isolating the signal, or converting the protocol.

[0074] In some implementations, the drive unit 211 may employ an isolated interface module, such as a 3P-O (Triple-Pole Output, a drive module that supports three independent and controllable output channels), or other isolated interface modules. This application does not limit the specific implementation of such modules.

[0075] In some embodiments, the number of lighting control units 212 corresponds to the number of lighting modules 220. The number of lighting control units 212 can be one or more. The lighting modules 220 are connected to the corresponding lighting control units 212 and are used to operate according to the corresponding drive signals.

[0076] In some implementations, the lighting control unit 212 can be implemented using a driver control chip, such as the SM18635 driver control chip. The SM18635 driver control chip can achieve multi-channel dimming and color adjustment through a single-wire communication protocol and can drive and control RGB / RGBW LED light strips.

[0077] In some implementations, there are multiple lighting control units 212 and multiple lighting modules 220. Each lighting control unit 212 corresponds to one lighting module 220, and the lighting module 220 operates according to the drive signal sent by the corresponding lighting control unit 212.

[0078] The connection method of the lighting control unit 212 is selected based on the requirements of different application scenarios, such as wiring distance, synchronization accuracy requirements of control signals, and cost requirements. For example, multiple lighting control units 212 can be connected in series or in parallel. In application scenarios with limited cost, restricted wiring, and single-point control, series connection can be given priority, while in application scenarios with high reliability requirements and system expansion requirements, parallel connection can be given priority. The specific choice can be made according to actual needs, and no restrictions are imposed on this.

[0079] Please see Figure 9 , Figure 9 This application provides a schematic diagram of the structure of a lighting module 220 according to an embodiment of the present application. Figure 9 In some embodiments, the lighting module 220 includes multiple RGB light-emitting units connected in series. These RGB units can achieve a full-color effect by mixing the three primary colors: red, green, and blue. The lighting control unit 212 can achieve the desired lighting effect by controlling the mixing and on / off states of different lights from the RGB units. The driving signals of the lighting control unit 212 may include a first driving sub-signal for red light, a second driving sub-signal for green light, and a third driving sub-signal for blue light. For example, different display effects can be achieved by adjusting the pulse width of the three driving sub-signals.

[0080] Please see Figure 10 , Figure 10 This application provides a schematic diagram of the structure of another lighting module 220, as shown in the embodiment. Figure 10 In some other embodiments, the lighting module 220 further includes multiple white light emitting units; the multiple white light units are connected in series, and the multiple white light units are connected in parallel with multiple RGB light emitting units.

[0081] In summary, the embodiments of this application provide a control signal generation circuit and a lighting control circuit. The control signal generation circuit includes a main power supply module, a signal generation module, and a signal control module. The input terminal of the main power supply module is connected to an input power source, and the main power supply module converts the input power source into a power supply. The output terminal of the main power supply module is used to output the power supply. The signal generation module includes a timing unit and a delay unit. The input terminal of the timing unit is connected to the output terminal of the main power supply module, and the signal terminal of the delay unit is connected to the output terminal of the main power supply module. The signal terminal of the delay unit is also connected to the input terminal of the timing unit. The timing unit is used to detect the power supply. When the timing unit detects the power supply... When the power supply is below a preset threshold, a power-off signal is generated. The timing unit is also used to start timing based on the power-off signal. The delay unit is used to convert the power supply into stored energy and to convert the stored energy into sustaining energy when the main power module stops supplying power, and outputs the sustaining energy through the signal terminal of the delay unit. The power supply terminal of the signal control module is connected to the output terminal of the main power module, and the signal terminal of the signal control module is connected to the output terminal of the timing unit. The signal control module is used to generate a control signal based on the timing signal, and the output terminal of the signal control module is used to output the control signal. Thus, when the system is powered off, the power supply of the signal control module is disconnected to save energy. At the same time, the system power-off status can be monitored.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A control signal generation circuit, characterized in that, The control signal generation circuit includes: A main power module, wherein the input terminal of the main power module is used to connect to an input power source, the main power module is used to convert the input power source into a power supply, and the output terminal of the main power module is used to output the power supply. A signal generation module, comprising a timing unit and a delay unit; the input terminal of the timing unit is connected to the output terminal of the main power module, and the signal terminal of the delay unit is connected to the output terminal of the main power module. The timing unit is used to detect the power supply. When the timing unit detects that the power supply is less than a preset threshold, it generates a power-off signal. The timing unit is also used to start timing according to the power-off signal. The timing unit is further configured to generate a power-on signal when it detects that the power supply is greater than or equal to the preset threshold; the timing unit is further configured to stop timing according to the power-on signal and generate a timing signal; the output terminal of the timing unit is configured to output the timing signal. The delay unit is used to convert the power supply into stored energy. The delay unit is also used to convert the stored energy into a sustaining power supply when the main power module stops supplying power, and output the sustaining power supply through the signal terminal of the delay unit. A signal control module is provided, wherein the power supply terminal of the signal control module is connected to the output terminal of the main power module, the signal terminal of the signal control module is connected to the output terminal of the timing unit, the signal control module is used to generate a control signal based on the timing signal, and the output terminal of the signal control module is used to output the control signal.

2. The control signal generation circuit according to claim 1, characterized in that, The delay unit includes a diode and a first capacitor. The anode of the diode is connected to the output terminal of the main power module, and the cathode of the diode is connected to the input terminal of the timing unit. The first terminal of the first capacitor is connected to the cathode of the diode, and the second terminal of the first capacitor is grounded.

3. The control signal generation circuit according to claim 1 or 2, characterized in that, The main power module includes: A first power supply submodule, wherein the input terminal of the first power supply submodule is used to connect to the input power supply, and the first power supply submodule is used to convert the input power supply into a first power supply; the output terminal of the first power supply submodule is used to output the first power supply. The second power supply submodule includes a DC-DC converter unit. The input terminal of the DC-DC converter unit is connected to the output terminal of the first power supply submodule. The DC-DC converter unit is used to convert the first power supply into the power supply.

4. A lighting control circuit, characterized in that, The lighting control circuit includes the control signal generation circuit, lighting control module, and lighting module as described in claim 1 or 2; The input terminal of the lighting control module is connected to the output terminal of the signal control module of the control signal generation circuit. The lighting control module is used to acquire the control signal generated by the signal control module and to generate a drive signal based on the control signal. The output terminal of the lighting control module is used to output the drive signal. The control terminal of the lighting module is connected to the output terminal of the lighting control module, and the lighting module is used to operate according to the drive signal.

5. The lighting control circuit according to claim 4, characterized in that, The main power supply module for the control signal generation circuit includes: A first power supply submodule, wherein the input terminal of the first power supply submodule is used to connect to the input power supply, and the first power supply submodule is used to convert the input power supply into a first power supply; the output terminal of the first power supply submodule is used to output the first power supply. The second power supply submodule includes a DC-DC converter unit. The input terminal of the DC-DC converter unit is connected to the output terminal of the first power supply submodule. The DC-DC converter unit is used to convert the first power supply into a power supply. The third power supply submodule has its input terminal connected to the output terminal of the first power supply submodule. The third power supply submodule is used to convert the first power supply into a second power supply, and its output terminal is used to output the second power supply. The third power supply submodule is connected to the power supply terminal of the lighting module and the control power supply terminal of the lighting control module, respectively.

6. The lighting control circuit according to claim 5, characterized in that, The main power module further includes a fourth power submodule. The input terminal of the fourth power submodule is connected to the output terminal of the third power submodule. The fourth power submodule is used to convert the second power supply into the third power supply. The output terminal of the fourth power submodule is used to output the third power supply. The output terminal of the fourth power submodule is connected to the drive power supply terminal of the lighting control module.

7. The lighting control circuit according to claim 4, characterized in that, The lighting control module includes a drive unit and a lighting control unit. The input terminal of the drive unit is connected to the signal control module. The drive unit is used to receive the control signal and convert the control signal into a drive control signal. The input terminal of the lighting control unit is connected to the output terminal of the drive unit. The lighting control unit is used to generate a drive signal based on the drive control signal. The number of lighting control units corresponds to the number of lighting modules. Each lighting module is connected to a corresponding lighting control unit and is used to operate according to a corresponding drive signal.

8. The lighting control circuit according to claim 7, characterized in that, The number of lighting control units is multiple, and the multiple lighting control units are connected in series or in parallel.

9. The lighting control circuit according to any one of claims 4-8, characterized in that, The lighting module includes multiple RGB light-emitting units connected in series.

10. The lighting control circuit according to claim 9, characterized in that, The lighting module also includes multiple white light emitting units; the multiple white light units are connected in series, and the multiple white light units are connected in parallel with the multiple RGB light emitting units.

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