An intelligent single-pole switch control circuit, system, and method

Abstract

The application provides an intelligent single fire switch control circuit, system and method, the control circuit comprises: a light-on power taking module, a light-off power taking module, an LDO linear voltage stabilizing module, a charge and discharge module and a wireless intelligent module; the light-on power taking module is used for supplying power to a load, the LDO linear voltage stabilizing module, the charge and discharge module and the wireless intelligent module when being turned on within any preset time period; the light-off power taking module is used for supplying power to the LDO linear voltage stabilizing module, the charge and discharge module and the wireless intelligent module when the light-on power taking module is turned off within a first preset time period; and the charge and discharge module is used for supplying power to the wireless intelligent module when the light-on power taking module is turned off within a second preset time period. The control circuit of the application eliminates the influence of ghost fire by controlling the time of generating ghost fire by a load, thereby improving user experience.

Description

Technical Field

[0001] This disclosure relates to the field of switching equipment technology, and in particular to an intelligent single-fire switch control circuit, system, and method. Background Technology

[0002] A smart single-wire switch is a switching device that operates only by connecting to the live wire. Currently, almost all single-wire switch products on the market use a similar power supply method, drawing power from both the on and off states to ensure the normal operation of the overall system. Firstly, in the on state, when the single-wire switch is on, the system draws power by controlling the switching time of the MOSFET connected in series in the load circuit to provide power to the downstream stages. Secondly, in the off state, when the single-wire switch is off, the system draws power between the load terminal and the neutral wire. In this state, the switching power supply circuit is responsible for supplying power, but because the downstream control system requires a continuous supply of power to maintain normal operation, a small current always flows through the bulb even when the light is off. This causes the bulb to have a faint glow or flicker, commonly known as "ghost light." This phenomenon, especially at night when resting, can significantly impact the user experience. Summary of the Invention

[0003] The purpose of this disclosure is to provide an intelligent single-fire switch control circuit, system, and method to solve the aforementioned problems existing in the prior art.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of this disclosure are as follows:

[0005] The first aspect of this disclosure provides an intelligent single-wire switch control circuit, applied to control the circuit during different preset time periods. The circuit includes: a light-on power supply module, a light-off power supply module, an LDO linear regulator module, a charging / discharging module, and a wireless intelligent module. The live wire terminal of the light-on power supply module is connected to the live wire, and the neutral wire terminal is connected to the load. The power supply terminal of the light-on power supply module is connected to the power supply terminal of the LDO linear regulator module. The power supply terminal of the light-off power supply module is connected to the load, and its power supply terminal is also connected to the power supply terminal of the LDO linear regulator module. The power supply terminal of the LDO linear regulator module is connected to the power supply terminal of the wireless intelligent module. The LDO linear regulator module is connected to the charging / discharging module via a power supply bus. The wireless intelligent module... The power module is connected to the light-on power module, the light-off power module, and the charging / discharging module, respectively. When the light-on power module is turned on during any preset time period, it supplies power to the load, the LDO linear regulator module, the charging / discharging module, and the wireless smart module, enabling the charging / discharging module to charge. During a first preset time period, when the light-off power module is on and the light-on power module is off, the light-off power module supplies power to the LDO linear regulator module, the charging / discharging module, and the wireless smart module, enabling the charging / discharging module to charge. During a second preset time period, when the light-off power module is off and the light-on power module is off, the charging / discharging module supplies power to the wireless smart module.

[0006] For example, the power supply module for turning on the light includes: a load relay driving circuit and a MOSFET power supply circuit; the load relay driving circuit is connected to a wireless smart module and is used to control the load relay to turn on and off, so as to turn the load on or off; the MOSFET power supply circuit is used to control the switching of the MOSFET to complete the power supply when the load relay is on.

[0007] For example, the control circuit further includes: a first power supply branch line, a second power supply branch line, a fifth diode D5, a sixth diode D6, and a seventh diode D7. The two ends of the two power supply branches are respectively connected to the MOSFET power supply circuit and the LDO linear regulator module. The fifth diode D5 and the sixth diode D6 are located on the second power supply branch line with their positive terminals facing each other. The seventh diode D7 is located on the first power supply branch line, with its negative terminal connected to the MOSFET power supply circuit and its positive terminal connected to the LDO linear regulator module. The load relay drive circuit includes: a relay K1 and a drive circuit. The L-MOS pin of the relay is connected to the MOSFET power supply circuit, and the load output LOUT pin is used to connect the load. The drive circuit has RELAY ON and RELAY pins. The OFF pins are connected to the corresponding pins of the wireless smart module. The MOS transistor power supply circuit includes: a MOS transistor, a fourth diode D4, a fourth resistor R4, a fifth resistor R5, a fourth capacitor C4, and a single-wire power supply chip U1. The drain D of the MOS transistor is connected to the L-MOS pin of the relay and one end of the two power supply branches. The source S is connected to the live wire and grounded. The gate G is connected to the GATE pin of the single-wire power supply chip U1. One end of the fourth resistor R4 is connected to the first power supply branch, and the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5, which is grounded. The fourth diode D4 is located on the second power supply branch. Its negative terminal is connected to the drain D of the MOS transistor, and its positive terminal is connected to one end of the fourth capacitor C4. The other end of the fourth capacitor C4 is connected to the other end of the fifth resistor R5. The FB2 pin of the single-wire power supply chip U1 is connected between the fourth resistor R4 and the fifth resistor R5, and the VIN pin is connected between the fourth diode D4 and the fourth capacitor C4.

[0008] For example, the power supply module for turning off the lights includes: an AC input control circuit and a switching power supply circuit; the AC input control circuit is connected to a wireless smart module and is used to control the on and off of the AC mains input, so as to control the activation or shutdown of the switching power supply circuit; the switching power supply circuit is used to convert the AC mains power into low-voltage DC power for use by the subsequent circuits.

[0009] For example, the switching power supply circuit includes: a first diode D1, a second diode D2, a third diode D3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3, an AC-DC switching power supply chip U3, and a transformer T1; the negative terminal of the first diode D1 is connected to the AC input control circuit, the positive terminal of the first diode D1 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded; the transformer T1 has a first primary winding, a second primary winding, and a secondary winding; the first end of the first primary winding is connected to the positive terminal of the first diode D1, and the second end of the first primary winding is connected to the DRAIN pin of the AC-DC switching power supply chip U3; the first end of the second primary winding is connected to the negative terminal of the third diode D3, and the positive terminal of the third diode D3 is connected to the negative terminal of the second primary winding. One end of the third capacitor C3 is connected, and the other end of the third capacitor C3 is grounded. The VCC pin of the AC-DC switching power supply chip U3 is connected to the positive terminal of the third diode D3. The second end of the second primary winding is grounded. The first end of the secondary winding is connected to the negative terminal of the second diode D2. The positive terminal of the second diode D2 is connected to one end of the second capacitor C2. The positive terminal of the second diode D2 is also connected in series with the first resistor R1 and the third resistor R3 and then grounded. The second end of the secondary winding is grounded. The FB pin of the AC-DC switching power supply chip U3 is connected between the first resistor R1 and the third resistor R3. The GND pin is grounded. The CS pin is connected to the second resistor R2 and then grounded. The control circuit includes: when the second power supply branch is connected, the positive terminal of the second diode D2 is connected to the second power supply branch and between the fifth diode D5 and the sixth diode D6.

[0010] For example, the LDO linear regulator module is used to reduce the pre-amplifier power supply voltage to 3.3V to power the wireless smart module; the LDO linear regulator module includes: a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and an LDO chip; the VIN1 and VIN2 pins of the LDO chip are respectively connected to the power supply bus, and the GND pin of the LDO chip is grounded; the VOUT pin of the LDO chip is respectively connected to one end of the sixth capacitor C6, one end of the seventh capacitor C7, and the VCC interface of the wireless smart module, and the other ends of the sixth capacitor C6 and the seventh capacitor C7 are respectively grounded; one end of the fifth capacitor C5 is connected to one end of the power supply bus, and the other end of the fifth capacitor C5 is grounded; when the control circuit includes: a seventh diode D7, one end of the fifth capacitor C5 is connected to the positive terminal of the seventh diode D7.

[0011] For example, the charging and discharging module includes a battery management module and a charging and discharging battery. The battery management module is used to manage the charging and discharging of the energy storage battery; the battery management module is connected to a power supply bus, and the other end of the power supply bus is connected to the power output terminals of the light-on power supply module and the light-off power supply module, respectively.

[0012] For example, the wireless intelligent module is connected to the battery management module of the LDO linear regulator module and the charging / discharging module and the charging / discharging battery respectively; the wireless intelligent module is used to control the normal operation of the entire single-fire control circuit and wireless remote control.

[0013] A second aspect of this disclosure provides an intelligent single-fire switch control system, the system comprising: the intelligent single-fire switch control circuit as described above.

[0014] A third aspect of this disclosure provides an intelligent single-wire switch control method, applied to control circuits during different preset time periods. The control method employs the intelligent single-wire switch control circuit described above, including:

[0015] The entire 24 hours are divided into a first preset time period of 7:01 to 19:59 and a second preset time period of 20:00 to 7:00.

[0016] The corresponding control is performed at different time periods. In the first preset time period, the power supply module for turning off the lights is turned on.

[0017] Turn on the power supply module for the lights. The power supply module for the lights is used to supply power to the load, LDO linear regulator module, charging and discharging module and wireless smart module, and also to store energy for the charging and discharging module.

[0018] The power supply module for turning off the lights is used to power the subsequent circuits, which include: an LDO linear regulator module, a wireless smart module power supply, and a charging and discharging module. It also stores energy for the charging and discharging module.

[0019] During the second preset time period, the power supply module for the lights is disconnected.

[0020] Turn on the power supply module for the lights. The power supply module for the lights is used to supply power to the load, LDO linear regulator module, charging and discharging module and wireless smart module, and also to store energy for the charging and discharging module.

[0021] The power supply module for turning on the lights is turned off, while the charging and discharging module is used to power the wireless smart module.

[0022] The beneficial effects of the embodiments disclosed herein are:

[0023] The control circuit of this embodiment controls the opening and closing of the power supply circuit for turning on the lights and the power supply circuit for turning off the lights within different preset time periods through a wireless intelligent module, thereby controlling the load during the time when ghost lights are generated and improving the user experience. Attached Figure Description

[0024] Figure 1 This disclosure presents a schematic diagram of an intelligent single-fire switch control circuit structure.

[0025] Figure 2This disclosure presents a schematic diagram of the load relay drive circuit structure in an intelligent single-fire switch control circuit.

[0026] Figure 3 This disclosure presents a schematic diagram of the MOS transistor power supply circuit structure in an intelligent single-fire switch control circuit.

[0027] Figure 4 This disclosure presents a schematic diagram of the working framework for a smart single-fire switch control circuit to draw power for turning on lights.

[0028] Figure 5 This disclosure presents a schematic diagram of the AC input control circuit structure in an intelligent single-fire switch control circuit.

[0029] Figure 6 This disclosure presents a schematic diagram of the switching power supply circuit structure in an intelligent single-fire switch control circuit.

[0030] Figure 7 This disclosure presents a schematic diagram of the working framework for a smart single-fire switch control circuit to draw power when the lights are off.

[0031] Figure 8 This disclosure presents a schematic diagram of an LDO linear regulator circuit structure in an intelligent single-fire switch control circuit.

[0032] Figure 9 This disclosure presents a schematic diagram of the battery management module structure in an intelligent single-fire switch control circuit.

[0033] Figure 10 This disclosure presents a schematic diagram of a wireless intelligent module in an intelligent single-fire switch control circuit;

[0034] Figure 11 This disclosure presents a schematic flowchart of a control method for an intelligent single-fire switch control circuit. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of this disclosure and are not intended to limit the embodiments of this disclosure.

[0036] like Figure 1As shown, the first aspect of this disclosure proposes an intelligent single-wire switch control circuit, applied to control the circuit during different preset time periods. The control circuit includes: a light-on power supply module 1, a light-off power supply module 2, an LDO linear regulator module 3, a charging / discharging module 4, and a wireless intelligent module 5. The live wire terminal of the light-on power supply module is used to connect to the live wire, and the neutral wire terminal is used to connect to the load. The power supply terminal of the light-on power supply module 1 is connected to the power supply terminal of the LDO linear regulator module. The power supply terminal of the light-off power supply module 2 is connected to the load, and the power supply terminal of the light-off power supply module is connected to the power supply terminal of the LDO linear regulator module 3. The power supply terminal of the LDO linear regulator module is connected to the power supply terminal of the wireless intelligent module. The LDO linear regulator module is connected to the charging / discharging module 5 via a power supply bus. The module consists of a light-on power supply module, a light-off power supply module, and a charging / discharging module. The light-on power supply module, when turned on during any preset time period, supplies power to the load, the LDO linear regulator module 3, the charging / discharging module 4, and the wireless intelligent module 5, enabling the charging / discharging module to charge. During a first preset time period, when the light-off power supply module 2 is on and the light-on power supply module is off, the light-off power supply module supplies power to the LDO linear regulator module, the charging / discharging module, and the wireless intelligent module, enabling the charging / discharging module to charge. During a second preset time period, when the light-off power supply module is off and the light-on power supply module is off, the charging / discharging module supplies power to the wireless intelligent module.

[0037] The live wire terminal of the light-on power supply module 1 is connected to the live wire, and the neutral wire terminal is used to connect one end of the load, with the other end of the load connected to the neutral wire. The light-on power supply module connects to the two power terminals of the LDO linear regulator module via two power supply branches. These power supply branches include: a first power supply branch and a second power supply branch. The first power supply branch has a fifth diode D5 and a sixth diode D6. The positive terminal of the fifth diode D5 is connected to the light-on power supply module, and the negative terminal of the fifth diode D5 is connected to the negative terminal of the sixth diode D6. The positive terminal of the sixth diode D6 is connected to the first power terminal VIN1 of the LDO linear regulator module. The second power supply branch has a seventh diode D7. The negative terminal of the seventh diode D7 is connected to the light-on power supply module 1, and the positive terminal of the seventh diode D7 is connected to the power supply bus within the LDO linear regulator module. The power supply terminal of the LDO linear regulator module is connected to the power supply terminal of the wireless intelligent module to supply power. The LDO linear regulator module is connected to the charging / discharging module via the power supply bus to supply power to it and to its internal battery for energy storage. The power supply terminal of the light-off power supply module 2 is connected to the load. The power supply terminal of the light-off power supply module 2 is connected to the first power supply terminal VIN1 of the LDO linear regulator module via a first power supply branch line. Specifically, the power supply terminal of the light-off power supply module 2 is connected to the first power supply branch line between the fifth diode D5 and the sixth diode D6. The load can be a lamp. The wireless intelligent module is the main control module, used for processing the device's logic instructions. This module also has Zigbee wireless communication capabilities, allowing users to interact with the device via an app and issue control switch commands. Therefore, the main control module can also read the real-time data from the network via Zigbee transmission to control the opening and closing of the light-off power supply module according to different preset time periods. The wireless intelligent module can also control the opening and closing of the light-on power supply module.

[0038] This disclosure illustrates the working principle of the control circuit by combining two switching states (light on state and light off state) within a preset time period:

[0039] like Figure 11 As shown, after the single-fire switch control circuit is powered on and started normally, the wireless intelligent module first performs the network distribution operation. Only after the network distribution is successful will it read whether the current time is the second preset time period, i.e., night, or the first preset time period, i.e., daytime. Otherwise, it directly enters the normal working mode. This mechanism is used to determine whether to enable the energy storage battery power supply and to determine the switching state of the AC mains input control circuit.

[0040] Secondly, as long as the control circuit reads the time as night, the power supply module for turning off the lights will be disconnected regardless of whether the lights are on or off. This means that the AC input control circuit mentioned later will be disconnected. At this time, the control circuit is powered by the energy storage battery or the power supply for turning on the lights. Conversely, if it is daytime, the control circuit needs to be in the on state. At this time, the control circuit is powered by the switching power supply or the power supply for turning on the lights (depending on the state of the load switch).

[0041] The intelligent single-wire switch control circuit of this disclosure can prevent the generation of ghost lights at the source by completely cutting off the AC power supply of the single-wire switch at night when the single-wire switch is off.

[0042] like Figure 2 and Figure 3 As shown, as an example of a light-on power supply module, the light-on power supply module 1 includes: a load relay drive circuit and a MOSFET power supply circuit; the load relay drive circuit is connected to a wireless smart module and is used to control the on and off of the load relay to determine whether AC mains power forms a circuit here, the purpose of which is to turn the load on or off; the MOSFET power supply circuit is used to control the switching of the MOSFET to complete the power supply work when the load relay is on.

[0043] The load relay drive circuit and the MOSFET power supply circuit are connected in series to the live wire. The load relay drive circuit is connected to the wireless smart module to control the relay's on and off states, thereby controlling the AC mains input and determining the on / off state of the load lamp. The MOSFET power supply circuit is used to control the switching of the MOSFET to complete the power supply operation when the load relay is on.

[0044] like Figure 1 As shown, the control circuit further includes: a first power supply branch line, a second power supply branch line, a fifth diode D5, a sixth diode D6, and a seventh diode D7. The two ends of the two power supply branches are respectively connected to the MOSFET power supply circuit and the LDO linear regulator module. The fifth diode D5 and the sixth diode D6 are located on the second power supply branch line with their positive terminals facing each other. The seventh diode D7 is located on the first power supply branch line, with its negative terminal connected to the MOSFET power supply circuit and its positive terminal connected to the LDO linear regulator module.

[0045] like Figure 2 As shown, the load relay drive circuit includes: a relay K1, the L-MOS pin of the relay is connected to the MOS transistor power supply circuit, the load output LOUT pin is used to connect the load, and the RELAY ON and RELAY OFF pins of the drive circuit are respectively connected to the corresponding pins of the wireless smart module.

[0046] like Figure 3As shown, the MOS transistor power supply circuit includes: a MOS transistor, a fourth diode D4, a fourth resistor R4, a fifth resistor R5, a fourth capacitor C4, and a single-wire power supply chip U1; the drain D of the MOS transistor is connected to the L-MOS pin of the relay and one end of the two power supply branches, the source S is connected to the live wire and grounded, and the gate G is connected to the GATE pin of the single-wire power supply chip U1; one end of the fourth resistor R4 is connected to the first power supply branch, the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5, and the other end of the fifth resistor R5 is grounded; the fourth diode D4 is located on the second power supply branch, the cathode of the fourth diode D4 is connected to the drain D of the MOS transistor, the anode of the fourth diode D4 is connected to one end of the fourth capacitor C4, and the other end of the fourth capacitor C4 is connected to the other end of the fifth resistor R5; the FB2 pin of the single-wire power supply chip U1 is connected between the fourth resistor R4 and the fifth resistor R5, and the VIN pin is connected between the fourth diode D4 and the fourth capacitor C4.

[0047] like Figure 2 As shown, the load drive circuit is a hybrid circuit composed of a magnetic latching relay, a MOSFET, a diode, a resistor, and a capacitor. The L-MOS pin of the relay is connected to the MOSFET's power supply circuit, and the LOUT pin is used to connect the load. The RELAY ON and RELAY OFF pins of the drive circuit are connected to the RELAY ON and RELAY OFF pins of the wireless intelligent module, respectively, and the wireless intelligent module controls the relay's switching. The 5V interface is connected to the 5.5V VCC terminal of the power supply bus.

[0048] like Figure 3 As shown, in the single-wire power supply chip U1 of the MOSFET power supply circuit, the VIN interface is the chip's power input. The FB2 interface sets the power supply voltage through resistors R4 and R5. The GATE interface controls the switch of MOSFET Q1. The GND interface connects the chip to the system ground. RESET is the chip's reset interface.

[0049] like Figure 4As shown, when the single-lamp switch enters the light-on state, the load relay drive circuit is activated. AC power N flows from the load lamp through the load relay K1, MOSFET Q1, and then to the L terminal, forming a loop. At this time, the MOSFET power supply circuit starts working. Because the load relay loop is activated, the voltage difference across the rectifier diode D1 at the input of the switching power supply circuit becomes very small, causing the switching power supply circuit to stop working. As the MOSFET power supply circuit operates, the power supply system precisely controls the switching time of the MOSFET according to the preset value set by the circuit to generate the corresponding voltage difference, thereby obtaining power. First, the power supply is rectified by diode D4 to power its own power supply system. Then, another path is rectified by diode D7 and filtered by capacitor C5 before entering the power supply bus. The power supply is then split into two paths from the power supply bus to supply the subsequent stages. One path is processed by the LDO linear regulator circuit and then output to the wireless intelligent module. The second path supplies the battery management circuit, which controls the charging of the energy storage battery. At this point, the entire system's power is entirely provided by the MOSFET power supply circuit. The above describes the working principle of a single-fire switch energy storage system in the light-on state. Its main purpose is to complete the power extraction work, provide power to the downstream system, and store energy at the same time.

[0050] like Figure 5 and Figure 6 As shown, as an example of a power supply module for turning off lights, the power supply module for turning off lights includes: an AC input control circuit and a switching power supply circuit; the AC input control circuit is connected to a wireless smart module and is used to control the on and off of the AC mains input, so as to control the activation or shutdown of the switching power supply circuit; the switching power supply circuit is used to convert the AC mains power into a low-voltage DC 5.5V power supply for use by the subsequent circuits.

[0051] The 5.5V pin of the AC input control circuit is connected to the VCC terminal of the 5.5V power supply bus. The AC_ON pin of the AC input control circuit is connected to the AC_ON pin of the wireless intelligent module. The GND pin of the AC input control circuit is grounded. In this control circuit, the subsequent circuits refer to the LDO linear regulator module, the charge / discharge module, and the wireless intelligent module.

[0052] like Figure 6As shown, as an example of a switching power supply circuit, the switching power supply circuit includes: a first diode D1, a second diode D2, a third diode D3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3, an AC-DC switching power supply chip U3, and a transformer T1; the cathode of the first diode D1 is connected to the AC input control circuit, the anode of the first diode D1 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded; the transformer T1 has a first primary winding, a second primary winding, and a secondary winding; the first end of the first primary winding is connected to the anode of the first diode D1, and the second end of the first primary winding is connected to the DRAIN pin of the AC-DC switching power supply chip U3; the first end of the second primary winding is connected to the cathode of the third diode D3, and the third diode... The positive terminal of diode D3 is connected to one end of the third capacitor C3, and the other end of the third capacitor C3 is grounded; the VCC pin of the AC-DC switching power supply chip U3 is connected to the positive terminal of the third diode D3; the second end of the second primary winding is grounded; the first end of the secondary winding is connected to the negative terminal of the second diode D2, the positive terminal of the second diode D2 is connected to one end of the second capacitor C2, and the positive terminal of the second diode D2 is also connected in series with the first resistor R1 and the third resistor R3 before being grounded; the second end of the secondary winding is grounded; the FB pin of the AC-DC switching power supply chip U3 is connected between the first resistor R1 and the third resistor R3, the GND pin is grounded, and the CS pin is connected to the second resistor R2 before being grounded; the control circuit includes: when the second power supply branch is connected, the positive terminal of the second diode D2 is connected to the second power supply branch and between the fifth diode D5 and the sixth diode D6.

[0053] In the U3 AC-DC switching power supply chip, the VCC interface is the power input. The FB interface is the voltage feedback terminal, used to stabilize the output voltage. The GND interface is the chip ground connected to the system ground. The CS interface is the current feedback terminal, used to limit the maximum output current. The DRAIN interface is the primary winding input terminal, controlling the charging and discharging of the transformer; internally, it contains a metal-oxide-semiconductor field-effect transistor.

[0054] like Figure 8As shown, as an example of an LDO linear regulator module, the LDO linear regulator module is used to reduce the front-end power supply voltage to 3.3V to power the wireless smart module. The LDO linear regulator module includes: a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and an LDO chip. The VIN1 and VIN2 pins of the LDO chip are respectively connected to the power supply bus, and the GND pin of the LDO chip is grounded. The VOUT pin of the LDO chip is respectively connected to one end of the sixth capacitor C6, one end of the seventh capacitor C7, and the VCC interface of the wireless smart module, and the other ends of the sixth capacitor C6 and the seventh capacitor C7 are respectively grounded. One end of the fifth capacitor C5 is connected to one end of the power supply bus, and the other end of the fifth capacitor C5 is grounded. When the control circuit includes a seventh diode D7, one end of the fifth capacitor C5 is connected to the positive terminal of the seventh diode D7.

[0055] The power supply bus is also connected to the positive terminals of the sixth diode D6 and the seventh diode D7. The LDO linear regulator module reduces the DC 5.5V to 3.3V and supplies power to the wireless smart module by connecting to the 3.3VCC pin of the wireless smart module.

[0056] like Figure 7 As shown, when the single-wire switch enters the off state, the load relay drive circuit shuts down, relay K1 is not conducting, and the L and N terminals of the AC power supply cannot be connected to form a loop. This results in no voltage difference across the MOSFET power supply circuit, causing it to stop working. However, because the AC power can flow normally into the switching power supply circuit and form a loop, the voltage difference across the rectifier diode D1 at the input terminal increases, and the switching power supply circuit starts working. This circuit is responsible for converting the input AC mains power into DC voltage, outputting DC 5.5V. The output power passes through the reverse isolation diode D6 and is filtered by capacitor C5 before entering the system power supply bus. It is also split into two paths to power and store energy for the downstream wireless intelligent module and the battery management system. The switching power supply also needs to provide power to the light-on power supply system through the reverse isolation diode D5 to maintain normal operation. The above working principle is based on the system's operation in normal daytime mode. Once the system detects that it is nighttime, the single-wire switch system will disconnect the AC power input, the switching power supply circuit will stop working, and the system will enter battery power mode. At this time, the entire single-wire system will be powered by the energy storage battery to maintain normal operation. In this mode, users can still remotely or locally control the switching action of the single-wire device. The battery power mode only works at night and when the lights are off. The system will only exit this mode and switch to other power supply circuits when it detects that it is daytime or when the device lights are on.

[0057] like Figure 9As shown, as an example of a charging and discharging module, the charging and discharging module includes a battery management module and a charging and discharging battery. The battery management module is used to manage the charging and discharging of the energy storage battery; the battery management module is connected to the power supply bus, and the other end of the power supply bus is connected to the power output terminals of the light-on power supply module and the light-off power supply module, respectively.

[0058] The battery management module connects to the rechargeable battery to charge it, and the rechargeable battery connects to the wireless smart module to provide it with power.

[0059] like Figure 10 As shown, the wireless intelligent module is connected to the battery management module of the LDO linear regulator module and the charging / discharging module and the charging / discharging battery, respectively; the wireless intelligent module is used to control the normal operation of the entire single-fire control circuit and to perform wireless remote operation.

[0060] The wireless intelligent module controls whether to enable battery power mode. It can also control the rechargeable battery to power the circuit during startup, network configuration, and network search. (Controls whether to enable battery power mode.)

[0061] This disclosed embodiment can completely solve the ghosting phenomenon of the load indicator. Furthermore, through intelligent module control, the system can temporarily use battery power during startup, network configuration, and network search, switching the power supply mode once the system is stable or successfully connected to the network. Because the system consumes a relatively large amount of power in these states, it causes the load indicator to flicker frequently. Using battery power in these states effectively solves the problem of high system power consumption, eliminates the flickering load indicator, and significantly improves the user experience.

[0062] A second aspect of this disclosure provides an intelligent single-fire switch control system, the system comprising: the intelligent single-fire switch control circuit as described above.

[0063] When the control system detects that the current time is night and the load relay is in the off state (lights off), it uses relays and other components at the single-wire AC input power supply terminal to controllably shut off the AC input, thereby completely shutting down the power supply and stopping its operation. At this time, the current flowing through the load bulb is 0, thus completely eliminating the phenomenon of ghosting light from the load bulb. However, since the single-wire switch still needs to have remote operation and push-button switch functions, a battery energy storage system needs to be added. The entire system then switches to battery power to maintain normal operation. Of course, a rechargeable battery needs to be used here. The switching of the system power supply mode is based on the automatic control of the intelligent module. The single-wire system can charge the battery during the day or when the bulb is on. At night, when the lights are off and the system is in sleep mode, the battery powers the entire system. The day / night time is not fixed; users can customize the time range in the smart APP to achieve a more intelligent control effect.

[0064] The third aspect of this disclosure proposes an intelligent single-wire switch control method, applied to control circuits during different preset time periods. The control method employs the intelligent single-wire switch control circuit described above, including:

[0065] Step S1: Divide the 24 hours into a first preset time period of 7:01 to 19:59 and a second preset time period of 20:00 to 7:00.

[0066] Step S2: Perform corresponding controls at different time periods. In the first preset time period, turn on the power supply module for turning off the lights.

[0067] Turn on the power supply module for the lights. The power supply module for the lights is used to supply power to the load, LDO linear regulator module, charging and discharging module and wireless smart module, and also to store energy for the charging and discharging module.

[0068] The power supply module for turning off the lights is used to power the subsequent circuits, which include: an LDO linear regulator module, a wireless smart module power supply, and a charging and discharging module. It also stores energy for the charging and discharging module.

[0069] Step S3: During the second preset time period, disconnect the power supply module for the light switch;

[0070] Turn on the power supply module for the lights. The power supply module for the lights is used to supply power to the load, LDO linear regulator module, charging and discharging module and wireless smart module, and also to store energy for the charging and discharging module.

[0071] The power supply module for turning on the lights is turned off, while the charging and discharging module is used to power the wireless smart module.

[0072] The above description is only a preferred embodiment of the present disclosure. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present disclosure, and these improvements and modifications should also be considered within the protection scope of the present disclosure.

Claims

1. An intelligent single-wire switch control circuit, applied to control the circuit during different preset time periods, characterized in that, The control circuit includes: Power supply modules for turning on lights, power supply modules for turning off lights, LDO linear regulator modules, charging and discharging modules, and wireless intelligent modules; The live wire terminal of the light-on power supply module is used to connect to the live wire, and the neutral wire terminal is used to connect to the load; the power supply terminal of the light-on power supply module is connected to the power supply terminal of the LDO linear regulator module. The power supply module for turning on the lights includes: a load relay drive circuit and a MOSFET power supply circuit; The load relay drive circuit is connected to the wireless intelligent module and is used to control the on and off of the load relay to turn the load on or off. The MOS transistor power supply circuit is used to control the switching of the MOS transistor to complete the power supply operation when the load relay is turned on. The power supply terminal of the light-off power supply module is connected to the load, and the power supply terminal of the light-off power supply module is connected to the power supply terminal of the LDO linear regulator module; the power supply terminal of the LDO linear regulator module is connected to the power supply terminal of the wireless smart module; the LDO linear regulator module is connected to the charging and discharging module through the power supply bus; the wireless smart module is connected to the light-on power supply module, the light-off power supply module, and the charging and discharging module respectively. The power supply module for turning off the lights includes: an AC input control circuit and a switching power supply circuit; The AC input control circuit is connected to the wireless intelligent module and is used to control the on and off of the AC mains input, so as to control the activation or shutdown of the switching power supply circuit. A switching power supply circuit is used to convert AC mains power into low-voltage DC power for use by subsequent circuits. The power-on module, when turned on within any preset time period, is used to supply power to the load, LDO linear regulator module, charging and discharging module, and wireless smart module, so that the charging and discharging module can charge. During the first preset time period, when the power supply module for turning off the lights is turned on and the power supply module for turning on the lights is turned off, the power supply module for turning off the lights is used to supply power to the LDO linear regulator module, the charging and discharging module and the wireless smart module, so that the charging and discharging module can charge. During the second preset time period, the power-off module is turned off, and when the power-on module is turned off, the charging and discharging module is used to supply power to the wireless smart module.

2. The circuit according to claim 1, characterized in that, The control circuit further includes: a first power supply branch line, a second power supply branch line, a fifth diode D5, a sixth diode D6, and a seventh diode D7. The two ends of the two power supply branches are respectively connected to the MOSFET power supply circuit and the LDO linear regulator module. The fifth diode D5 and the sixth diode D6 are located on the second power supply branch line with their positive terminals facing each other. The seventh diode D7 is located on the first power supply branch line, with its negative terminal connected to the MOSFET power supply circuit and its positive terminal connected to the LDO linear regulator module. The load relay drive circuit includes: a relay K1 and a drive circuit. The L-MOS pin of the relay is connected to the MOS transistor power supply circuit, the load output LOUT pin is used to connect to the load, and the RELAY ON and RELAY OFF pins of the drive circuit are respectively connected to the corresponding pins of the wireless smart module. The MOS transistor power supply circuit includes: a MOS transistor, a fourth diode D4, a fourth resistor R4, a fifth resistor R5, a fourth capacitor C4, and a single-wire power supply chip U1; The drain D of the MOSFET is connected to the L-MOS pin of the relay and one end of the two power supply lines, the source S is connected to the live wire and grounded, and the gate G is connected to the GATE pin of the single-wire power supply chip U1. One end of the fourth resistor R4 is connected to the first power supply branch, and the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5. The other end of the fifth resistor R5 is grounded. The fourth diode D4 is located on the second power supply branch line. Its negative terminal is connected to the drain D of the MOSFET, and its positive terminal is connected to one end of the fourth capacitor C4. The other end of the fourth capacitor C4 is connected to the other end of the fifth resistor R5. The FB2 pin of the single-fire power chip U1 is connected between the fourth resistor R4 and the fifth resistor R5, and the VIN pin is connected between the fourth diode D4 and the fourth capacitor C4.

3. The circuit according to claim 1, characterized in that, The switching power supply circuit includes: a first diode D1, a second diode D2, a third diode D3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3, an AC-DC switching power supply chip U3, and a transformer T1; The negative terminal of the first diode D1 is connected to the AC input control circuit, the positive terminal of the first diode D1 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded. Transformer T1 has a first primary winding, a second primary winding, and a secondary winding; the first end of the first primary winding is connected to the positive terminal of the first diode D1, and the second end of the first primary winding is connected to the DRAIN pin of the AC-DC switching power supply chip U3. The first end of the second primary winding is connected to the negative terminal of the third diode D3, the positive terminal of the third diode D3 is connected to one end of the third capacitor C3, the other end of the third capacitor C3 is grounded, the VCC pin of the AC-DC switching power supply chip U3 is connected to the positive terminal of the third diode D3; the second end of the second primary winding is grounded. The first end of the secondary winding is connected to the negative terminal of the second diode D2, the positive terminal of the second diode D2 is connected to one end of the second capacitor C2, and the positive terminal of the second diode D2 is also connected in series with the first resistor R1 and the third resistor R3 and then grounded; the second end of the secondary winding is grounded. The FB pin of the AC-DC switching power supply chip U3 is connected between the first resistor R1 and the third resistor R3, the GND pin is grounded, and the CS pin is connected to the second resistor R2 and then grounded. The control circuit includes: when the second power supply branch line is connected, the positive terminal of the second diode D2 is connected to the second power supply branch line and between the fifth diode D5 and the sixth diode D6.

4. The circuit according to claim 1 or 2, characterized in that, The LDO linear regulator module is used to reduce the front-end power supply voltage to 3.3V to power the wireless smart module. The LDO linear regulator module includes: a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and an LDO chip; The VIN1 and VIN2 pins of the LDO chip are connected to the power supply bus, and the GND pin of the LDO chip is grounded. The VOUT pin of the LDO chip is connected to one end of the sixth capacitor C6, one end of the seventh capacitor C7, and the VCC interface of the wireless smart module, and the other ends of the sixth capacitor C6 and the seventh capacitor C7 are grounded. One end of the fifth capacitor C5 is connected to one end of the power supply bus, and the other end of the fifth capacitor C5 is grounded. When the control circuit includes a seventh diode D7, one end of the fifth capacitor C5 is connected to the positive terminal of the seventh diode D7.

5. The circuit according to claim 4, characterized in that, The charging and discharging module includes: a battery management module and a charging and discharging battery; The battery management module is used to manage the charging and discharging of the energy storage battery; The battery management module is connected to the power supply bus, and the other end of the power supply bus is connected to the power output terminals of the light-on power supply module and the light-off power supply module, respectively.

6. The circuit according to claim 5, characterized in that, The wireless intelligent module is connected to the battery management module and the charging / discharging battery of the LDO linear regulator module and the charging / discharging module, respectively; the wireless intelligent module is used to control the normal operation of the entire single-fire control circuit and wireless remote control.

7. An intelligent single-fire switch control system, characterized in that, The system includes: the intelligent single-fire switch control circuit according to any one of claims 1 to 6.

8. A smart single-wire switch control method, applied to control circuits during different preset time periods, characterized in that, The control method using the intelligent single-fire switch control circuit according to any one of claims 1 to 6 includes: The entire 24 hours are divided into a first preset time period of 7:01 to 19:59 and a second preset time period of 20:00 to 7:

00. The corresponding control is performed at different time periods. In the first preset time period, the power supply module for turning off the lights is turned on. When the power supply module for lighting is turned on, it supplies power to the load, LDO linear regulator module, charging and discharging module, and wireless smart module, and also stores energy for the charging and discharging module. When the power supply module for turning on the lights is turned off, the power supply module for turning off the lights is used to power the subsequent circuits, which include: LDO linear regulator module, wireless smart module power supply and charging / discharging module, and also stores energy for the charging / discharging module. During the second preset time period, the power supply module for the lights is disconnected. When the power supply module for lighting is turned on, it supplies power to the load, LDO linear regulator module, charging and discharging module, and wireless smart module, and also stores energy for the charging and discharging module. When the power-on module is turned off, the charging / discharging module is used to power the wireless smart module.

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