Intelligent switch circuit and wall intelligent switch

Abstract

The intelligent switch circuit and the wall intelligent switch provided by the embodiments of the present disclosure can collect the voltage value at the power input end through the voltage collection circuit, and the controller can send a driving signal to the adjusting voltage circuit through the second pin when the collected voltage value is lower than the first preset voltage value. The adjusting voltage circuit can adjust the voltage value at the voltage detection pin under the driving of the driving signal, so as to change the on-off time of the switching device and further increase the voltage duration at the power input end. The ability of the intelligent switch to obtain current from the line is improved, and thus the compatibility between the intelligent switch and the intelligent lamp is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of intelligent control technology, and in particular to an intelligent switch circuit and an intelligent wall switch. Background Art

[0002] With the development of smart home technology, smart lamps, because they can connect to the Internet and support voice, APP or device linkage control, not only have the basic function of flexibly controlling the turning on and off of lights, but also can adjust the brightness and color temperature, which greatly improves people's lighting needs and is increasingly widely used in people's daily lives.

[0003] In existing smart lighting systems, smart lamps are typically connected to the circuit using a single live wire. With this wiring method, when the physical switch is off, the smart lamp loses power, causing it to go offline and become unresponsive to voice and app control commands. To address this issue, a common solution is to pair smart lamps with smart switches. Even when the smart lamp is off, the smart switch can still control the smart lamp's on and off through a cloud or local hub.

[0004] However, there are compatibility issues between smart switches and smart lamps. When the brightness of a smart lamp is set to very low or zero, the current in the circuit becomes very low, preventing the smart switch from receiving sufficient power, and thus causing the linkage between the smart switch and the smart lamp to fail. To address this issue, smart lamps are generally required to have a rated power of no less than 3W. This phenomenon is known in the industry as a compatibility issue between smart switches and smart lamps. This compatibility issue not only hinders the development of the smart lighting industry but also affects the user experience, and it remains unresolved. Summary of the Invention

[0005] The embodiments of the present disclosure provide a smart switch circuit and a smart wall switch to improve the compatibility between the smart switch and the smart lamp.

[0006] Based on the above problems, in a first aspect, an intelligent switch circuit is provided, comprising: an electrically controlled switch, a switch device, a switch connection power supply circuit, a controller, a voltage collection circuit, and a voltage regulation circuit arranged between two connection terminals;

[0007] The switch connecting the power circuit includes: the switch connecting the power chip;

[0008] One end of the electronically controlled switch is connected to one end of the two terminals; the other end of the electronically controlled switch is respectively connected to one end of the switch device, the power pin of the power-taking chip connected to the switch, one end of the voltage collection circuit, and the power input end of the controller;

[0009] The other end of the switch device is connected to the other end of the two connection terminals; the control end of the switch device is connected to the control pin of the switch connected power chip;

[0010] The switch is connected to the voltage division detection pin of the power chip and one end of the voltage regulating circuit;

[0011] The other end of the voltage collection circuit is connected to the first pin of the controller;

[0012] The other end of the voltage regulating circuit is connected to the second pin of the controller;

[0013] The controller is configured to receive the voltage value at the power input terminal collected by the voltage collection circuit through the first pin; and send a driving signal to the voltage regulation circuit through the second pin when the collected voltage value is lower than a first preset voltage value;

[0014] The voltage regulating circuit is used to adjust the voltage value at the voltage divider detection pin of the switch connected to the power chip under the drive of the driving signal, so as to change the on-off time of the switching device and thereby increase the voltage duration at the power input end.

[0015] In combination with the first aspect, in a possible implementation, the voltage collection circuit includes: a first voltage dividing resistor and a second voltage dividing resistor;

[0016] One end of the first voltage-dividing resistor is connected to the power input terminal; the other end of the first voltage-dividing resistor is connected to the first pin;

[0017] One end of the second voltage-dividing resistor is connected to the other end of the first voltage-dividing resistor; and the other end of the second voltage-dividing resistor is set to a ground potential.

[0018] In combination with the first aspect, in one possible implementation, the switch connected power circuit further includes an auxiliary circuit; the auxiliary circuit includes: a third voltage-dividing resistor and a fourth voltage-dividing resistor; the voltage regulating circuit includes a first regulating resistor; and the drive signal includes a low-level signal;

[0019] One end of the third voltage-dividing resistor is connected to the other end of the electronically controlled switch, and the other end of the third voltage-dividing resistor is connected to the voltage-dividing detection pin;

[0020] One end of the fourth voltage-dividing resistor is connected to the other end of the third voltage-dividing resistor, and the other end of the fourth voltage-dividing resistor is set to ground potential;

[0021] One end of the first regulating resistor is connected to the voltage division detection pin; the other end of the first regulating resistor is connected to the second pin of the controller;

[0022] the controller is configured to output a low-level signal through the second pin when the collected voltage value is lower than the first preset voltage value, so that the first regulating resistor and the fourth voltage-dividing resistor are connected in parallel, thereby reducing the divided voltage value at the voltage-dividing detection pin, thereby controlling the cut-off time of the switching device to increase, thereby increasing the voltage duration at the power input terminal;

[0023] The controller is further configured to, when the collected voltage value is greater than or equal to the first preset voltage value, set the second pin to a high impedance state, and restore the voltage division of the third voltage divider resistor and the fourth voltage divider resistor to normal, thereby restoring the voltage duration at the power input terminal.

[0024] In combination with the first aspect, in a possible embodiment, the switch is connected to the power-taking chip, and is used to control the cutoff of the switching device through the control pin if the voltage value at the voltage divider detection pin is less than the second preset voltage value when the first adjustment resistor and the fourth voltage divider resistor are connected in parallel; if the voltage value at the voltage divider detection pin is greater than or equal to the third preset voltage value, the switching device is controlled to be turned on through the control pin.

[0025] With reference to the first aspect, in a possible implementation manner, a resistance value formed by the first regulating resistor and the fourth voltage-dividing resistor being connected in parallel is inversely proportional to the cut-off time of the switching device.

[0026] Based on the above problem, in a second aspect, an intelligent switch circuit is provided, comprising: an electrically controlled switch, a switch device, a switch connection power supply circuit, a controller, a voltage collection circuit, and a voltage regulation circuit arranged between two connection terminals;

[0027] The switch connecting the power circuit includes: the switch connecting the power chip;

[0028] One end of the electronically controlled switch is connected to one end of the two wiring terminals; the other end of the electronically controlled switch is respectively connected to one end of the switch device, the power pin of the power-taking chip connected to the switch, and the power input terminal of the controller;

[0029] The other end of the switch device is connected to the other end of the two connection terminals; the control end of the switch device is connected to the control pin of the switch connected power chip;

[0030] The switch connects the voltage division detection pin of the power taking chip to one end of the voltage regulating circuit and one end of the voltage collecting circuit;

[0031] The other end of the voltage collection circuit is connected to the first pin of the controller;

[0032] The other end of the voltage regulating circuit is connected to the second pin of the controller;

[0033] The controller is configured to receive, through the first pin, a voltage value at a voltage-dividing detection pin of the switch-connected power-taking chip collected by the voltage collection circuit, and send a drive signal to the voltage regulation circuit through the second pin when the collected voltage value is lower than a fourth preset voltage value;

[0034] The voltage regulating circuit is used to adjust the voltage value at the voltage divider detection pin of the switch connected to the power chip under the drive of the driving signal, so as to change the on-off time of the switching device and thereby increase the voltage duration at the power input end.

[0035] In combination with the first aspect and the second aspect, in a possible implementation manner, the present invention further includes: a protection circuit; the protection circuit includes: a common diode, a protection resistor, and a voltage regulator diode;

[0036] One end of the anode of the common diode is connected to the other end of the electronically controlled switch; one end of the cathode of the common diode is connected to one end of the protection resistor; the other end of the protection resistor is connected to one end of the cathode of the voltage-stabilizing diode; one end of the anode of the voltage-stabilizing diode is connected to the voltage-dividing detection pin of the power-taking chip connected to the switch;

[0037] The protection circuit is used to continuously output a low-level signal at the second pin of the controller, so that when the voltage regulator diode reaches the Zener voltage, the voltage value at the voltage divider detection pin is controlled to a third preset voltage value, thereby increasing the conduction time ratio of the switching device and reducing the voltage duration at the power input end; the magnitude of the Zener voltage is determined according to the voltage tolerance capacity at the power input end.

[0038] Based on the above problem, in a third aspect, an intelligent switch circuit is provided, comprising: an electrically controlled switch, a switch device, a switch connection power supply circuit, a controller, a voltage regulating circuit and a protection circuit arranged between two connection terminals;

[0039] The switch connecting the power circuit includes: the switch connecting the power chip;

[0040] One end of the electronically controlled switch is connected to one end of the two connection terminals; the other end of the electronically controlled switch is respectively connected to one end of the switch device, a power pin of the switch connected to the power supply chip, one end of the protection circuit and a power input terminal of the controller;

[0041] The other end of the switch device is connected to the other end of the two connection terminals; the control end of the switch device is connected to the control pin of the switch connected power supply chip;

[0042] The switch connects the voltage division detection pin of the power chip to one end of the voltage regulating circuit and the other end of the protection circuit;

[0043] The other end of the voltage regulating circuit is connected to the second pin of the controller;

[0044] The controller is configured to send a driving signal to the voltage regulating circuit via the second pin;

[0045] The voltage regulating circuit is used to regulate the voltage value at the voltage-dividing detection pin of the switch connected to the power-taking chip under the drive of the drive signal, so as to change the on-off time of the switch device and thereby increase the voltage duration at the power input terminal;

[0046] The protection circuit is used to change the on-off time of the switching device and reduce the voltage duration at the power input terminal by maintaining the voltage value at the voltage division detection pin when the voltage at the power input terminal continues to rise.

[0047] Based on the above problem, in a fourth aspect, an intelligent switch circuit is provided, comprising: an electrically controlled switch, a switch device, a switch connection power supply circuit, a controller and a protection circuit arranged between two connection terminals;

[0048] The switch connecting the power circuit includes: the switch connecting the power chip and its auxiliary circuit;

[0049] One end of the electronically controlled switch is connected to one end of the two wiring terminals; the other end of the electronically controlled switch is respectively connected to one end of the switch device, one end of the protection circuit, a power pin of the power-taking chip connected to the switch, and a power input terminal of the controller;

[0050] The other end of the switch device is connected to the other end of the two connection terminals; the control end of the switch device is connected to the control pin of the switch connected power supply chip;

[0051] The other end of the protection circuit is connected to the voltage division detection pin of the power taking chip connected to the switch;

[0052] The auxiliary circuit includes: a third voltage-dividing resistor and a fourth voltage-dividing resistor; one end of the third voltage-dividing resistor is connected to the other end of the electronically controlled switch, and the other end of the third voltage-dividing resistor is connected to the voltage-dividing detection pin; one end of the fourth voltage-dividing resistor is connected to the other end of the third voltage-dividing resistor, and the other end of the fourth voltage-dividing resistor is set to ground potential; the resistance value of the fourth voltage-dividing resistor is lower than that of a conventional design, and / or the fourth voltage-dividing resistor is connected in parallel with a resistor, and the parallel resistance value is lower than that of the conventional design;

[0053] The auxiliary circuit is used to adjust the voltage value at the voltage-dividing detection pin of the switch connected to the power chip, so as to change the on-off time of the switch device, thereby increasing the voltage duration at the power input terminal;

[0054] The protection circuit is used to change the on-off time of the switching device and reduce the voltage duration at the power input terminal by maintaining the voltage value at the voltage division detection pin when the voltage at the power input terminal continues to rise.

[0055] In combination with the third aspect and the fourth aspect, in a possible implementation manner, the protection circuit includes: a common diode, a protection resistor, and a voltage stabilizing diode;

[0056] One end of the anode of the common diode is connected to the other end of the electronically controlled switch; one end of the cathode of the common diode is connected to one end of the protection resistor; the other end of the protection resistor is connected to the cathode end of the voltage-stabilizing diode; one end of the anode of the voltage-stabilizing diode is connected to the voltage-dividing detection pin;

[0057] The protection circuit is used to control the voltage value at the voltage divider detection pin to a third preset voltage value when the voltage regulator diode reaches the Zener voltage, increase the conduction time ratio of the switching device, and reduce the voltage duration at the power input end; the size of the Zener voltage is determined according to the voltage tolerance capacity at the power input end.

[0058] In a fifth aspect, a wall smart switch is provided, comprising: a switch panel, wherein the wall covered by the switch panel is provided with a smart switch control circuit as provided in the first aspect and / or the second aspect / or the third aspect / or the fourth aspect, or in combination with any possible implementation of the first aspect and / or the second aspect / or the third aspect / or the fourth aspect.

[0059] The beneficial effects of the embodiments of the present disclosure include:

[0060] The present disclosure provides an intelligent switch circuit and a smart wall switch. A voltage acquisition circuit acquires the voltage value at a power input terminal. When the acquired voltage value is lower than a first preset voltage value, a controller sends a drive signal to a voltage regulation circuit via a second pin. Driven by the drive signal, the voltage regulation circuit adjusts the voltage value at the voltage-dividing detection pin of the power-collecting chip connected to the switch, thereby changing the on-off time of the switch device and thereby increasing the duration of the voltage at the power input terminal. This improves the intelligent switch's ability to draw current from the circuit, thereby enhancing compatibility between the intelligent switch and intelligent lighting fixtures.

[0061] The second of the intelligent switch circuit and the wall intelligent switch provided by the embodiment of the present disclosure collects the voltage value at the voltage dividing detection pin of the switch connected power taking chip through the voltage collecting circuit. In the case that the collected voltage value is lower than the fourth preset voltage value, the controller sends a driving signal to the voltage adjusting circuit through the second pin. The voltage adjusting circuit adjusts the voltage value at the voltage dividing detection pin of the switch connected power taking chip under the driving of the driving signal, so as to change the on-off time of the switch device and further increase the voltage duration time at the power input end. The ability of the intelligent switch to obtain current from the line is improved, and thus the compatibility between the intelligent switch and the intelligent lamp is improved.

[0062] The third of the intelligent switch circuit and the wall intelligent switch provided by the embodiment of the present disclosure adjusts the voltage value at the voltage dividing detection pin of the switch connected power taking chip under the driving of the driving signal continuously output by the second pin of the controller, so as to change the on-off time of the switch device and further increase the voltage duration time at the power input end. The ability of the intelligent switch to obtain current from the line is improved, and thus the compatibility between the intelligent switch and the intelligent lamp is improved. In the case that the voltage value at the power input end continuously increases, the protection circuit maintains the voltage value at the voltage dividing detection pin, changes the on-off time of the switch device, reduces the voltage duration time at the power input end, and protects the voltage value at the power input end within a safe range.

[0063] The fourth of the intelligent switch circuit and the wall intelligent switch provided by the embodiment of the present disclosure adjusts the voltage value at the voltage dividing detection pin of the switch connected power taking chip in the manner that the fourth voltage dividing resistance value of the auxiliary circuit is lower than that of the conventional design, so as to change the on-off time of the switch device and further increase the voltage duration time at the power input end. The ability of the intelligent switch to obtain current from the line is improved, and thus the compatibility between the intelligent switch and the intelligent lamp is improved. In the case that the voltage value at the power input end continuously increases, the protection circuit maintains the voltage value at the voltage dividing detection pin, changes the on-off time of the switch device, reduces the voltage duration time at the power input end, and protects the voltage value at the power input end within a safe range. BRIEF DESCRIPTION OF DRAWINGS

[0064] Figure 1 The structure schematic diagram of the intelligent switch circuit provided by the embodiment of the present disclosure is shown in FIG. 1.

[0065] Figure 2 The structure schematic diagram of the intelligent switch circuit provided by the embodiment of the present disclosure is shown in FIG. 1.

[0066] Figure 3 The structure schematic diagram of the intelligent switch circuit provided by the embodiment of the present disclosure is shown in FIG. 1.

[0067] Figure 4The second schematic diagram of the relationship between the AC waveform and the PWM signal provided in the embodiment of the present disclosure;

[0068] Figure 5 This is a third structural diagram of an intelligent switch circuit provided by an embodiment of the present disclosure;

[0069] Figure 6 This is a fourth structural diagram of an intelligent switch circuit provided by an embodiment of the present disclosure;

[0070] Figure 7 This is a fifth structural diagram of an intelligent switch circuit provided by an embodiment of the present disclosure;

[0071] Figure 8 This is a sixth structural diagram of an intelligent switch circuit provided by an embodiment of the present disclosure;

[0072] Figure 9 This is a seventh structural diagram of an intelligent switch circuit provided by an embodiment of the present disclosure;

[0073] Figure 10 This is an eighth structural diagram of an intelligent switch circuit provided by an embodiment of the present disclosure; DETAILED DESCRIPTION

[0074] The present disclosure provides an intelligent switch circuit and an intelligent wall switch. Preferred embodiments of the present disclosure are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are intended only to illustrate and explain the present disclosure and are not intended to limit the present disclosure. Furthermore, the embodiments and features of the embodiments may be combined with one another unless there is a conflict.

[0075] The embodiment of the present disclosure provides an intelligent switch circuit, such as Figure 1 As shown, it includes: an electrically controlled switch 101, a switching device 102, a switch-connected power-taking circuit 103, a controller 104, a voltage collection circuit 105, and a voltage regulation circuit 106 are set between the two connection terminals L and N; the switch-connected power-taking circuit 103 includes: a switch-connected power-taking chip 1031 (not shown in the figure);

[0076] One end of the electronically controlled switch 101 is connected to one end N of the two terminals; the other end of the electronically controlled switch 101 is respectively connected to one end of the switch device 102, the power pin of the switch connected power chip 1031, one end of the voltage collection circuit 105, and the power input end of the controller 104;

[0077] The other end of the switch device 102 is connected to the other end L of the two connection terminals; the control end of the switch device 102 is connected to the control pin of the switch connection power chip 1031;

[0078] The switch connects the voltage division detection pin of the power chip 1031 to one end of the voltage regulating circuit 106;

[0079] The other end of the voltage collection circuit 105 is connected to the first pin of the controller 104;

[0080] The other end of the voltage regulating circuit 106 is connected to the second pin of the controller 104;

[0081] The controller 104 is configured to receive the voltage value at the power input terminal V1 collected by the voltage collection circuit 105 through the first pin; and send a driving signal to the voltage regulation circuit 106 through the second pin when the collected voltage value is lower than the first preset voltage value;

[0082] The voltage regulating circuit 106 is used to regulate the voltage value at the voltage dividing detection pin of the power chip 1031 under the drive of the driving signal, so as to change the on-off time of the switch device 102 and thereby increase the voltage duration at the power output end.

[0083] In the application scenario of single live wire connection, in order to power the controller 104 of the intelligent switch, a switch is usually set to connect the power circuit 103 and a switch to disconnect the power circuit ( Figure 1 (omitted and not shown). During implementation, the switch-connected power-taking circuit 103 is used to supply power to the controller 104 when the electronically controlled switch 101 is connected (i.e., when the load is working). The corresponding switch-disconnected power-taking circuit is used to supply power to the controller 104 when the electronically controlled switch 101 is disconnected (i.e., when the load stops working). When the electronically controlled switch 101 is connected, illustratively, in the positive half cycle of the alternating current, the voltage value of the other end L of the two terminals is higher than the voltage value of one end N of the two terminals. At this time, the switch device 102 is turned on and no power is supplied to the controller 104; in the negative half cycle of the alternating current, the voltage value of the other end L of the two terminals is lower than the voltage value of one end N of the two terminals. The switch power-taking circuit 103 controls the on or off state of the switch device 102. When the switch device 102 is turned on, no power is supplied to the controller 104. When the switch device 102 is turned off, power is supplied to the controller 104.

[0084] The switch power circuit 103 controls the on / off state of the switch device 102 in the following manner: For example, the switch power chip 1031 can be a BP8005 chip, which includes a power pin VIN, a voltage divider detection pin FB, and a control pin GATE. The switch power chip 1031 sets the frequency and duty cycle of the PWM signal output by the control pin GATE, such as Figure 2As shown, the frequency of the PWM signal is consistent with the frequency of the AC power, and the duty cycle determines the proportion of time that the high-level state of the pulse lasts within one cycle. The switch connection power chip 1031 presets two voltage thresholds. The control pin GATE is connected to the control terminal of the switch device 102. When the voltage value at the voltage divider detection pin FB is greater than or equal to the first voltage threshold, the control pin GATE outputs a high level, controlling the switch device 102 to conduct. When the voltage value at the voltage divider detection pin FB is less than the second voltage threshold, the control pin GATE outputs a low level, controlling the switch device 102 to turn off.

[0085] When a smart lamp and a smart switch are connected in series, when the smart lamp is turned on and at normal brightness, the current between the two terminals L and N is sufficiently large, allowing the smart switch to draw sufficient current from the circuit. However, as the brightness of the smart lamp is gradually adjusted to a very low level or zero, the load power of the smart lamp gradually decreases, and the current between the two terminals L and N is insufficient to supply sufficient current. The voltage at the power input terminal V1 also gradually decreases until it can no longer supply power to the controller 104, causing the linkage between the smart switch and the smart lamp to fail. This represents a compatibility issue between the smart switch and the smart lamp. Therefore, improving the smart switch's ability to draw current from the circuit when the brightness of the smart lamp is gradually adjusted to a very low level or zero is the key to improving compatibility between the smart switch and the smart lamp.

[0086] In an embodiment of the present disclosure, a circuit is provided for increasing the voltage duration at the power input terminal and improving the ability of the smart switch to obtain current from the circuit when the brightness of the smart lamp is gradually adjusted to a very low level or to zero.

[0087] During implementation, a voltage acquisition circuit 105 is connected between the power input terminal V1 and the first pin of the controller 104 to capture changes in the voltage at the power input terminal V1 in real time. A voltage regulation circuit 106 is connected between the second pin of the controller 104 and the voltage-dividing detection pin FB of the switch-connected power-collecting chip 1301 to regulate the voltage at the voltage-dividing detection pin FB. By adjusting the drive signal output by the second pin, the voltage at the voltage-dividing detection pin FB can be flexibly adjusted, thereby indirectly regulating the on and off state of the switch device 102. When the voltage at the power input terminal V1 falls below a first preset voltage, the controller 104 outputs a drive signal through the second pin, driving the voltage regulation circuit 106 to reduce the voltage at the voltage-dividing detection pin FB. This reduces the duty cycle of the PWM signal output by the control pin GATE, increases the off time of the switch device 102, and thereby increases the duration of the voltage at the power input terminal. This improves the smart switch's ability to draw current from the circuit, thereby enhancing compatibility between the smart switch and the smart lamp.

[0088] In addition, the positions of the two terminals L and N in the drawings provided in the present disclosure are for illustration only, and L and N can be swapped according to actual conditions during implementation. In the embodiments of the present disclosure, "connection" can represent a direct connection or an indirect connection. In order to ensure the safe operation of the circuit, resistors, capacitors, diodes and other devices can be added between the two "connected" devices as needed. For example, when the other end of the electronically controlled switch 101 is connected to the power pin of the power-taking chip 1031 connected to the switch, it can be an indirect connection, that is, in order to make the circuit work more stably, a diode can be added between the other end of the electronically controlled switch 101 and the power pin of the power-taking chip 1031 connected to the switch, so as to avoid the power supply voltage being higher than the voltage at the electronically controlled switch end, and the subsequent power supply will discharge, causing the main control and other circuits to fail to work. The same is true for other devices, which will not be repeated here.

[0089] In another embodiment provided by the present disclosure, Figure 3 As shown, the voltage collection circuit 105 includes: a first voltage dividing resistor R1 and a second voltage dividing resistor R2;

[0090] One end of the first voltage divider resistor R1 is connected to the power input terminal; the other end of the first voltage divider resistor R1 is connected to the first pin; one end of the second voltage divider resistor R2 is connected to the other end of the first voltage divider resistor R1; the other end of the second voltage divider resistor R2 is set to ground potential.

[0091] In the embodiment of the present disclosure, as described above, the controller 104 obtains the voltage value at the power input terminal V1 in real time through the voltage acquisition circuit 105. Since the voltage that the controller 104 can withstand is limited, if the controller 104 directly obtains the voltage at V1, it may cause damage. Therefore, a voltage divider can be used to allow the controller 104 to obtain the voltage that it can withstand through the first pin, thereby determining the voltage at V1 by calculation. Assuming that the voltage value of the first pin is V2, then V1 = V2*(R1+R2) / R2, and the controller 104 obtains the voltage value at the power input terminal V1 through calculation.

[0092] Further, the first pin can use a general purpose input / output (GPIO) pin, and the general purpose input / output pin can input an analog signal or a digital signal. In an embodiment, the controller 104 includes an analog-to-digital converter (ADC), and then an analog signal can be input through the first pin, the analog signal is converted by the ADC, and the converted digital signal is processed; in another embodiment, an analog-to-digital converter is connected between the other end of the first voltage dividing resistor R1 and the first pin, and the analog-to-digital converter can convert the analog signal into a digital signal, and then the first pin inputs the converted digital signal for controller identification processing.

[0093] In yet another embodiment provided in the present disclosure, as shown in Figure 3 The switch communication power taking circuit 103 further includes an auxiliary circuit 1032; the auxiliary circuit 1032 includes a third voltage dividing resistor R3 and a fourth voltage dividing resistor R4; the voltage adjusting circuit 106 includes a first adjusting resistor R5; the driving signal includes a low-level signal;

[0094] One end of the third voltage dividing resistor R3 is connected to the other end of the electrically controlled switch 101, and the other end of the third voltage dividing resistor R3 is connected to the voltage dividing detection pin FB;

[0095] One end of the fourth voltage dividing resistor R4 is connected to the other end of the third voltage dividing resistor R3, and the other end of the fourth voltage dividing resistor R4 is set as a ground potential;

[0096] One end of the first adjusting resistor R5 is connected to the voltage dividing detection pin FB; the other end of the first adjusting resistor R5 is connected to the second pin of the controller 104;

[0097] The controller 104 is configured to, in a case where the collected voltage value V1 is lower than a first preset voltage value, output a low-level signal through the second pin, so that the first adjusting resistor R5 and the fourth voltage dividing resistor R4 form parallel connection, the voltage value at the voltage dividing detection pin FB is reduced, and then the turn-off time of the switch device 102 is increased, so as to increase the voltage duration at the power input end V1;

[0098] The controller 104 is further configured to, in a case where the collected voltage value V1 is greater than or equal to the first preset voltage value, set the second pin as a high-impedance state, and the voltage division of the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 returns to normal, so as to restore the voltage duration at the power input end V1.

[0099] In the embodiment of the present disclosure, the first adjusting resistor R5 is added and connected to the second pin of the controller 104. The second pin of the controller 104 can use a general purpose input / output (GPIO) pin, which can output a low-level signal, a high-level signal and a high-impedance state. The high-impedance state refers to a state of the circuit, in which the output end of the circuit presents a very high resistance, similar to an open circuit state. In this state, the circuit neither provides current nor absorbs current.

[0100] When the controller 104 obtains that the voltage value V1 collected by the collection voltage circuit 105 is lower than the first preset voltage value, it indicates that the load power of the smart lamp is gradually decreasing at this time, and the current at the power input end is about to be insufficient to supply power to the controller. In this case, the controller 104 outputs a low-level signal through the second pin, and the switch power collection circuit enters the enhanced power collection mode. At this time, the first adjusting resistor R5 is connected in parallel with the fourth voltage dividing resistor R4, and the resistance value R4_2 of the parallel connection is (R4*R5) / (R4+R5). For example, the fourth voltage dividing resistor R4 is 20KΩ, and the first adjusting resistor R5 is 20KΩ. Then the resistance value R4_2 of the parallel connection is 10KΩ, thereby reducing the voltage division of the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4, that is, reducing the voltage value at the voltage detection pin FB. The switch connected power supply chip 1301 controls the duty cycle of the PWM signal output by the GATE pin to be reduced, increases the off time of the switch device 102, and then increases the voltage duration at the power input end V1, thereby improving the ability of the smart switch to obtain current from the line.

[0101] When the controller 104 obtains that the voltage value V1 collected by the collection voltage circuit 105 is greater than or equal to the first preset voltage value, it indicates that the load power of the smart lamp is gradually increasing at this time, and there is enough current at the power input end to supply power to the controller 104. In this case, the controller 104 outputs a high-impedance state through the second pin, and the first adjusting resistor R5 is in an open circuit state. The voltage division of the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 returns to normal, the duty cycle of the PWM signal output by the GATE pin of the switch connected power supply chip 1301 is increased, the off time of the switch device 102 is reduced, thereby restoring the voltage duration at the power input end V1, so that the switch power collection circuit can recover to the normal mode as soon as possible, and prevent the voltage at the power input end V1 from being too high, which can cause damage to the components.

[0102] Switching device 102 can use a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET). The gate of the MOSFET serves as the control terminal, connected to the control pin GATE. The source is connected to the other end of the electronically controlled switch 101, and the drain is connected to the other end of the two wiring terminals, L. In the absence of a gate voltage, the source and drain are cut off (non-conductive). When the gate voltage exceeds the threshold voltage, a conductive channel (called an "inversion layer") forms on the semiconductor surface beneath the oxide layer, allowing current to flow from the source to the drain. A conventional diode D1 is connected in parallel across the two ends of the MOSFET, with the anode of the conventional diode D1 connected to the other end of the two wiring terminals, L, and the cathode of the conventional diode D1 connected to the other end of the electronically controlled switch 101. For example, during the positive half cycle of the alternating current, the voltage value of the other end L of the two terminals is higher than the voltage value of one end N of the two terminals, and the ordinary diode D1 is turned on. At this time, the switch is connected to the power supply circuit 103 and no power is supplied to the controller 104; during the negative half cycle of the alternating current, the voltage value of the other end L of the two terminals is lower than the voltage value of one end N of the two terminals. When the MOSFET tube is turned on, no power is supplied to the controller 104, and when the MOSFET tube is turned off, power is supplied to the controller 104.

[0103] In another embodiment provided by the present disclosure, Figure 3 、 Figure 4 As shown, the switch is connected to the power-taking chip 1301, and is used to control the switch device 102 to be cut off through the control pin GATE if the voltage value at the voltage divider detection pin FB is less than the second preset voltage value when the first regulating resistor R5 and the fourth voltage divider resistor R4 are connected in parallel; if the voltage value at the voltage divider detection pin FB is greater than or equal to the third preset voltage value, the switch device 102 is controlled to be turned on through the control pin FB.

[0104] In the disclosed embodiment, the second and third preset voltage values ​​are used to adjust the duty cycle of the PWM signal output by the control pin GATE. If the voltage value at the voltage-dividing detection pin FB, which is the voltage divided by the resistor R4_2 (formed by the first adjustment resistor R5 and the fourth voltage-dividing resistor R4 in parallel) and the third voltage-dividing resistor R3, is less than the second preset voltage value V_FB_L, the control pin GATE outputs a low level, and the switch device 102 is turned off. If the voltage value is greater than the third preset voltage value V_FB_H, the control pin GATE outputs a high level, and the switch device 102 is turned on. The second and third preset voltage values ​​can be the same as the voltage threshold of a conventional design, or they can be different from the voltage threshold of a conventional design depending on the circuit design requirements.

[0105] In another embodiment provided by the present disclosure, Figure 3 、 Figure 4 As shown, the resistance value R4_2 formed by the first regulating resistor R5 and the fourth voltage-dividing resistor R4 in parallel is inversely proportional to the cut-off time of the switching device 102 .

[0106] In the embodiment of the present disclosure, the smaller the resistance value of the first regulating resistor R5, the smaller the resistance value R4_2 formed by the first regulating resistor R5 and the fourth voltage-dividing resistor R4 in parallel, the lower the voltage value of the voltage-dividing detection pin FB after the resistor R4_2 formed by the first regulating resistor R5 and the fourth voltage-dividing resistor R4 in parallel and the third voltage-dividing resistor R3 is, the smaller the duty cycle of the PWM signal output by the control pin GATE within one AC power cycle, and the longer the cut-off time of the switching device 102.

[0107] Based on the same disclosed concept, the embodiment of the present disclosure further provides an intelligent switch circuit, such as Figure 5 As shown, it includes: an electric control switch 101, a switch device 102, a switch connection power circuit 103, a controller 104, a voltage collection circuit 105 and a voltage regulation circuit 106 are set between two connection terminals L and N;

[0108] The switch is connected to the power-taking circuit 103, including: the switch is connected to the power-taking chip 1031 (not shown in the figure);

[0109] One end of the electronically controlled switch 101 is connected to one end N of the two terminals; the other end of the electronically controlled switch 101 is respectively connected to one end of the switch device 102, the power pin VIN of the switch connected power chip 1031, and the power input end of the controller 104;

[0110] The other end of the switch device 102 is connected to the other end L of the two connection terminals; the control end of the switch device 102 is connected to the control pin GATE of the switch connected power chip 1031;

[0111] The switch connects the voltage-dividing detection pin FB of the power-taking chip 1031 to one end of the voltage regulating circuit 106 and one end of the voltage collecting circuit 105 ;

[0112] The other end of the voltage collection circuit 105 is connected to the first pin of the controller 104;

[0113] The other end of the voltage regulating circuit 106 is connected to the second pin of the controller 104;

[0114] The controller 104 is configured to receive, via a first pin, a voltage value at a voltage-dividing detection pin FB of the switch-connected power-taking chip 1031, collected by the voltage collection circuit 105, and to send a drive signal to the voltage regulation circuit 106 via a second pin when the collected voltage value is lower than a fourth preset voltage value;

[0115] The voltage regulating circuit 106 is used to regulate the voltage value at the voltage dividing detection pin FB of the power chip 1031 under the drive of the driving signal, so as to change the on-off time of the switching device 102 and thereby increase the voltage duration at the power input terminal V1.

[0116] In the embodiment of the present disclosure, since the voltage value at the voltage divider detection pin FB of the switch connected power chip 1031 has a certain numerical relationship with the voltage value at the power input terminal V1, the controller 104 in the aforementioned embodiment directly obtains the voltage value at the power input terminal V1, and due to this numerical relationship, the controller 104 can also obtain the voltage value at the voltage divider detection pin FB to realize the monitoring of the voltage value at the power input terminal V1.

[0117] During implementation, a voltage collection circuit 105 can be connected between the voltage-dividing detection pin FB of the switch-connected power chip 103 and the first pin of the controller 104. The voltage value at the voltage-dividing detection pin FB can be used to obtain the voltage change at the power input terminal V1 in real time. A voltage adjustment circuit 106 is connected between the second pin of the controller 104 and the voltage-dividing detection pin FB of the switch-connected power chip 1301 to adjust the voltage value at the voltage-dividing detection pin FB. Figure 6 As shown, the voltage value of the first pin is V2, then V1 = V2 * (R3 + R4) / R4, and the controller 104 calculates the voltage value at the power input terminal V1. When the voltage value at the power input terminal V1 is lower than the fourth preset voltage value, the second pin of the controller 104 outputs a low-level signal, the switch power supply circuit enters the enhanced power supply mode, and the first adjustment resistor R5 of the voltage adjustment circuit 106 is connected in parallel with the fourth voltage divider resistor R4. The voltage value obtained at the voltage divider detection pin FB is reduced, thereby controlling the cut-off time of the switch device 102 to increase, thereby increasing the voltage duration at the power input terminal V1 and improving the ability of the smart switch to obtain current from the line. The resistance value R4_2 after the first regulating resistor R5 and the fourth voltage-dividing resistor R4 are connected in parallel is R4_2=(R4*R5) / (R4+R5), and the voltage value V1 at the power input terminal V1 is V2*(R3+R4_2) / R4_2. When the voltage value V1 at the power input terminal is greater than or equal to a preset voltage threshold, the second pin of the controller 104 is set to a high-impedance state, the first regulating resistor R5 is in an open-circuit state, and the voltage divided by the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4 returns to normal, thereby restoring the voltage duration at the power input terminal V1, so that the switch power supply circuit returns to normal mode as soon as possible, preventing the voltage at the power input terminal V1 from being too high, causing damage to components.

[0118] In another embodiment provided by the present disclosure, Figure 3 and Figure 6As shown, the above intelligent switch circuit further includes: a protection circuit 107; the protection circuit 107 includes: a common diode D2, a protection resistor R6, and a voltage stabilizing diode ZD1;

[0119] The anode end of the common diode D2 is connected to the other end of the electronically controlled switch 101; the cathode end of the common diode D2 is connected to one end of the protection resistor R6; the other end of the protection resistor R6 is connected to the cathode end of the voltage-stabilizing diode ZD1; the anode end of the voltage-stabilizing diode ZD1 is connected to the voltage-dividing detection pin FB of the power-taking chip 1031 connected to the switch;

[0120] The protection circuit 107 is used to control the voltage value at the voltage divider detection pin FB to a third preset voltage value when the second pin of the controller 104 continuously outputs a low-level signal so that the voltage regulator diode ZD1 reaches the Zener voltage, thereby increasing the conduction time ratio of the switching device 102 and reducing the voltage duration at the power input terminal V1; the size of the Zener voltage is determined according to the voltage tolerance of the power input terminal.

[0121] In the embodiment of the present disclosure, as described above, the second pin of the controller 104 outputs a low-level signal, and the switch power circuit 103 enters the enhanced power mode, increasing the voltage duration at the power input terminal. However, if a software fault occurs in the controller 104, causing the switch power circuit 103 to be in the enhanced power mode all the time, it will cause damage to the components. In order to avoid this situation, a protection circuit 107 is connected between the other end of the electronically controlled switch 101 and the switch connected power chip 1031. When the voltage value at the power input terminal V1 continues to rise and the voltage value across the ZD1 of the voltage regulator diode reaches the Zener voltage, the protection circuit 107 is turned on, otherwise the protection circuit 107 is turned off. When the protection circuit 107 is turned on, the voltage value at the voltage divider detection pin FB increases and maintains a stable voltage state, forming a negative feedback on the voltage value at the power input terminal V1, and the control pin GATE controls the switch device 102 to reduce the cut-off time, thereby reducing the voltage value at the power input terminal V1. That is, when in a regulated state, if the voltage at V1 rises, the voltage at FB will also rise after the voltage drops across components D2, R6, and ZD1, thereby increasing the GATE on-time and reducing the voltage at V1, thus protecting the circuit. Therefore, even if a software failure in controller 104 causes switch power circuit 103 to remain in enhanced power mode, protection circuit 107 will maintain the voltage at power input terminal V1 within a safe range.

[0122] Based on the same disclosed concept, the embodiment of the present disclosure further provides an intelligent switch circuit, such as Figure 7As shown, it includes: an electric control switch 101, a switch device 102, a switch connection power circuit 103, a controller 104, a voltage regulation circuit 106 and a protection circuit 107 are set between two connection terminals L and N;

[0123] The switch is connected to the power-taking circuit 103, including: the switch is connected to the power-taking chip 1031 (not shown in the figure);

[0124] One end of the electronically controlled switch 101 is connected to one end N of the two terminals; the other end of the electronically controlled switch 101 is respectively connected to one end of the switch device 102, the power pin VIN of the switch connected power chip 1031, one end of the protection circuit 107 and the power input end of the controller 104;

[0125] The other end of the switch device 102 is connected to the other end L of the two connection terminals; the control end of the switch device 102 is connected to the control pin GATE of the switch connected power chip 1031;

[0126] The switch connects the voltage-dividing detection pin FB of the power-taking chip 1031 to one end of the voltage regulating circuit 106 and the other end of the protection circuit 107;

[0127] The other end of the voltage regulating circuit 106 is connected to the second pin of the controller 104;

[0128] The controller 104 is configured to send a driving signal to the voltage regulating circuit 106 via the second pin;

[0129] The voltage regulating circuit 106 is used to adjust the voltage value at the voltage-dividing detection pin FB of the power chip 1031 when the switch is driven by the driving signal, so as to change the on-off time of the switch device 102, thereby increasing the voltage duration at the power input terminal V1;

[0130] The protection circuit 107 is used to change the on-off time of the switch device 102 and reduce the voltage duration at the power input terminal by maintaining the voltage value at the voltage divider detection pin FB when the voltage at the power input terminal continues to rise.

[0131] In the embodiment of the present disclosure, the voltage collection circuit 105 may not be provided, but the protection circuit 107 may directly adjust the voltage value at the voltage dividing detection pin FB when necessary according to the real-time status of the circuit.

[0132] As described above, a voltage regulation circuit 106 is connected between the second pin of the controller 104 and the voltage-dividing detection pin FB of the switch-connected power supply chip 1301 to regulate the voltage value at the voltage-dividing detection pin FB. Exemplarily, the voltage regulation circuit 106 may include a first voltage-regulating resistor R5, one end of which is connected to the voltage-dividing detection pin FB; the other end of the first regulating resistor R5 is connected to the second pin of the controller 104. The second pin of the controller 104 continuously outputs a low-level signal, which reduces the voltage at the voltage-dividing detection pin FB. The switch power supply circuit 103 enters an enhanced power supply mode, which increases the voltage duration at the power input terminal V1 and improves the ability of the intelligent switch to draw current from the line. In the disclosed embodiment, a protection circuit 107 is connected between the other end of the electronically controlled switch 101 and the switch-connected power supply chip 1031. When the voltage at the power input terminal V1 continues to rise, the protection circuit 107 turns on, and the voltage at the voltage-dividing detection pin FB increases and maintains a stable voltage state, forming a negative feedback to the voltage at the power input terminal V1. The control pin GATE controls the cutoff time of the switch device 102, thereby reducing the voltage at the power input terminal V1. Therefore, even if the switch power supply circuit 103 is always in the enhanced power supply mode, the protection circuit 107 will keep the voltage at the power input terminal within a safe range.

[0133] Based on the same disclosed concept, the embodiment of the present disclosure further provides an intelligent switch circuit, such as Figure 8 As shown, an electric control switch 101, a switch device 102, a switch connection power circuit 103, a controller 104 and a protection circuit 107 are provided between the two connection terminals L and N;

[0134] The switch connected power circuit 103 includes: a switch connected power chip 1031 and its auxiliary circuit 1032;

[0135] One end of the electronically controlled switch 101 is connected to one end N of the two terminals; the other end of the electronically controlled switch 101 is respectively connected to one end of the switch device 102, one end of the protection circuit 107, the power pin VIN of the switch connected power chip 1031, and the power input end of the controller 104;

[0136] The other end of the switch device 102 is connected to the other end L of the two connection terminals; the control end of the switch device 102 is connected to the control pin GATE of the switch connected power chip 1031;

[0137] The other end of the protection circuit 107 is connected to the voltage-dividing detection pin FB of the power-taking chip 1031 connected to the switch;

[0138] The auxiliary circuit 1032 includes: a third voltage-dividing resistor R3 and a fourth voltage-dividing resistor R4; one end of the third voltage-dividing resistor R3 is connected to the other end of the electronically controlled switch 101, and the other end of the third voltage-dividing resistor R3 is connected to the voltage-dividing detection pin FB; one end of the fourth voltage-dividing resistor R4 is connected to the other end of the third voltage-dividing resistor R3, and the other end of the fourth voltage-dividing resistor R4 is set to ground potential; the resistance value of the fourth voltage-dividing resistor R4 is lower than that of a conventional design, and / or a resistor is connected in parallel with the fourth voltage-dividing resistor of a conventional design, so that the parallel resistance value is lower than that of a conventional design;

[0139] The auxiliary circuit 1032 is used to adjust the voltage value at the voltage-dividing detection pin FB of the power chip 1031 connected to the switch, so as to change the on-off time of the switch device 102, thereby increasing the voltage duration at the power input terminal V1;

[0140] The protection circuit 107 is used to change the on-off time of the switch device 102 and reduce the voltage duration at the power input terminal V1 by maintaining the voltage value at the voltage divider detection pin FB when the voltage at the power input terminal V1 continues to rise.

[0141] In the embodiment of the present disclosure, in order to further save resources, it is possible not to add a voltage regulating circuit, but to directly improve the auxiliary circuit 1032 .

[0142] In the disclosed embodiment, the resistance value of the fourth voltage-dividing resistor R4 is lower than that of a conventional design, and / or the fourth voltage-dividing resistor R4 is connected in parallel with a resistor, and the resistance value after parallel connection is lower than that of a conventional design, thereby reducing the voltage at the voltage-dividing detection pin FB, causing the switch power-taking circuit 103 to enter an enhanced power-taking mode, increasing the voltage duration at the power input terminal V1, and improving the ability of the smart switch to obtain current from the line. A protection circuit 107 is connected between the other end of the electronically controlled switch 101 and the switch-connected power-taking chip 1031. When the voltage value at the power input terminal V1 continues to rise, the protection circuit 107 is turned on, the voltage value at the voltage-dividing detection pin FB increases and maintains a stable voltage state, forming a negative feedback on the voltage value at the power input terminal V1, and the control pin GATE controls the cut-off time of the switch device 102 to reduce the voltage value at the power input terminal V1. Therefore, even if the switch power-taking circuit 103 is always in the enhanced power-taking mode, the protection circuit 107 will protect the voltage at the power input terminal within a safe range.

[0143] In another embodiment provided by the present disclosure, Figure 9 、 Figure 10 As shown, the protection circuit 107 includes: a common diode D2, a protection resistor R6, and a voltage stabilizing diode ZD1;

[0144] An anode end of a common diode D2 is connected to the other end of the electronically controlled switch 101; a cathode end of the common diode D2 is connected to one end of a protection resistor R6; the other end of the protection resistor R6 is connected to the cathode end of a voltage-stabilizing diode ZD1; an anode end of the voltage-stabilizing diode ZD1 is connected to the voltage-dividing detection pin FB;

[0145] The protection circuit 107 is used to control the voltage value at the voltage divider detection pin FB to a third preset voltage value when the voltage regulator diode ZD1 reaches the Zener voltage, thereby increasing the conduction time ratio of the switching device 102 and reducing the voltage duration at the power input terminal V1; the magnitude of the Zener voltage is determined according to the voltage tolerance of the power input terminal.

[0146] In the embodiment of the present disclosure, as described above, the switch power supply circuit 103 is always in the enhanced power supply mode, which increases the voltage duration at the power input terminal V1 and improves the ability of the intelligent switch to obtain current from the line. However, if it is always in the enhanced power supply mode, the voltage at the power input terminal V1 continues to rise, exceeding the voltage tolerance range at the power input terminal V1, which will cause damage to the components. In order to avoid this situation, a protection circuit 107 is connected between the other end of the electronically controlled switch 101 and the switch connected power supply chip 1031. When the voltage value at the power input terminal V1 continues to rise and the voltage value across the voltage regulator diode ZD1 reaches the Zener voltage, the protection circuit 107 is turned on, otherwise the protection circuit 107 is turned off. When the protection circuit 107 is turned on, the voltage value at the voltage divider detection pin FB increases and maintains a stable voltage state, forming a negative feedback on the voltage value at the power input terminal V1, and the control pin GATE controls the switch device 102 to reduce the cut-off time, thereby reducing the voltage value at the power input terminal V1. Therefore, even if the switch power circuit 103 is always in the enhanced power mode, the protection circuit 107 will protect the voltage at the power input terminal to be within a safe range.

[0147] An embodiment of the present disclosure provides a wall smart switch, comprising: a switch panel, wherein the smart switch circuit described in any of the above embodiments is arranged inside the wall covered by the switch panel.

[0148] The embodiments of the present disclosure provide a smart switch control circuit and a smart wall switch, which increase the voltage duration at the power input terminal, improve the ability of the smart switch to obtain current from the circuit, and thus improve the compatibility between the smart switch and the smart lamp.

[0149] Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments of the present disclosure can be implemented through hardware or by means of software plus a necessary general hardware platform. Based on this understanding, the technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present disclosure.

[0150] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present disclosure.

[0151] Those skilled in the art will appreciate that the modules in the devices of the embodiments may be distributed in the devices of the embodiments as described in the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module or further split into multiple submodules.

[0152] The serial numbers of the above-mentioned embodiments of the present disclosure are for description only and do not represent the advantages or disadvantages of the embodiments.

[0153] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such modifications and variations.

Claims

1. An intelligent switching circuit, characterized in that: include: An electric control switch, a switch device, a switch connection power taking circuit, a controller, a voltage collection circuit and a voltage regulating circuit are arranged between the two connection terminals; The switch connecting the power circuit includes: the switch connecting the power chip; One end of the electronically controlled switch is connected to one end of the two wiring terminals; the other end of the electronically controlled switch is respectively connected to one end of the switch device, the power pin of the power-taking chip connected to the switch, one end of the voltage collection circuit, and the power input terminal of the controller; The other end of the switch device is connected to the other end of the two connection terminals; the control end of the switch device is connected to the control pin of the switch connected power supply chip; The switch is connected to the voltage division detection pin of the power chip and one end of the voltage regulating circuit; The other end of the voltage collection circuit is connected to the first pin of the controller; The other end of the voltage regulating circuit is connected to the second pin of the controller; The controller is configured to receive the voltage value at the power input terminal collected by the voltage collection circuit through the first pin; and send a driving signal to the voltage regulation circuit through the second pin when the collected voltage value is lower than a first preset voltage value; The voltage regulating circuit is used to adjust the voltage value at the voltage divider detection pin of the switch connected to the power chip under the drive of the driving signal, so as to change the on-off time of the switching device and thereby increase the voltage duration at the power input end.

2. The circuit according to claim 1, wherein The voltage collection circuit includes: a first voltage dividing resistor and a second voltage dividing resistor; One end of the first voltage-dividing resistor is connected to the power input terminal; the other end of the first voltage-dividing resistor is connected to the first pin; One end of the second voltage-dividing resistor is connected to the other end of the first voltage-dividing resistor; and the other end of the second voltage-dividing resistor is set to a ground potential.

3. The circuit according to claim 1, wherein The switch connection power supply circuit further includes an auxiliary circuit; the auxiliary circuit includes: a third voltage dividing resistor and a fourth voltage dividing resistor; the voltage regulating circuit includes a first regulating resistor; the driving signal includes a low level signal; One end of the third voltage-dividing resistor is connected to the other end of the electronically controlled switch, and the other end of the third voltage-dividing resistor is connected to the voltage-dividing detection pin; One end of the fourth voltage-dividing resistor is connected to the other end of the third voltage-dividing resistor, and the other end of the fourth voltage-dividing resistor is set to ground potential; One end of the first regulating resistor is connected to the voltage division detection pin; the other end of the first regulating resistor is connected to the second pin of the controller; the controller is configured to output a low-level signal through the second pin when the collected voltage value is lower than the first preset voltage value, so that the first regulating resistor and the fourth voltage-dividing resistor are connected in parallel, thereby reducing the divided voltage value at the voltage-dividing detection pin, thereby controlling the cut-off time of the switching device to increase, thereby increasing the voltage duration at the power input terminal; The controller is further configured to, when the collected voltage value is greater than or equal to the first preset voltage value, set the second pin to a high impedance state, and restore the voltage division of the third voltage divider resistor and the fourth voltage divider resistor to normal, thereby restoring the voltage duration at the power input terminal.

4. The circuit according to claim 3, wherein The switch is connected to the power-taking chip and is used to control the switching device to be cut off through the control pin if the voltage value at the voltage-dividing detection pin is less than the second preset voltage value when the first adjustment resistor and the fourth voltage-dividing resistor are connected in parallel; if the voltage value at the voltage-dividing detection pin is greater than or equal to the third preset voltage value, the switching device to be turned on through the control pin.

5. The circuit according to claim 3 or 4, characterized in that The resistance value formed by the first regulating resistor and the fourth voltage-dividing resistor being connected in parallel is inversely proportional to the cut-off time of the switching device.

6. An intelligent switching circuit, characterized in that: include: An electric control switch, a switch device, a switch connection power taking circuit, a controller, a voltage collection circuit and a voltage regulating circuit are arranged between the two connection terminals; The switch connecting the power circuit includes: the switch connecting the power chip; One end of the electronically controlled switch is connected to one end of the two wiring terminals; the other end of the electronically controlled switch is respectively connected to one end of the switch device, the power pin of the power-taking chip connected to the switch, and the power input terminal of the controller; The other end of the switch device is connected to the other end of the two connection terminals; the control end of the switch device is connected to the control pin of the switch connected power supply chip; The switch connects the voltage division detection pin of the power taking chip to one end of the voltage regulating circuit and one end of the voltage collecting circuit; The other end of the voltage collection circuit is connected to the first pin of the controller; The other end of the voltage regulating circuit is connected to the second pin of the controller; The controller is configured to receive, through the first pin, a voltage value at a voltage-dividing detection pin of the switch-connected power-taking chip collected by the voltage collection circuit, and send a drive signal to the voltage regulation circuit through the second pin when the collected voltage value is lower than a fourth preset voltage value; The voltage regulating circuit is used to adjust the voltage value at the voltage divider detection pin of the switch connected to the power chip under the drive of the driving signal, so as to change the on-off time of the switching device and thereby increase the voltage duration at the power input end.

7. The circuit according to claim 1 or 6, characterized in that Also includes: Protection circuit; The protection circuit includes: a common diode, a protection resistor, and a voltage-stabilizing diode; One end of the anode of the common diode is connected to the other end of the electronically controlled switch; one end of the cathode of the common diode is connected to one end of the protection resistor; the other end of the protection resistor is connected to one end of the cathode of the voltage-stabilizing diode; one end of the anode of the voltage-stabilizing diode is connected to the voltage-dividing detection pin of the power-taking chip connected to the switch; The protection circuit is used to continuously output a low-level signal at the second pin of the controller, so that when the voltage regulator diode reaches the Zener voltage, the voltage value at the voltage divider detection pin is controlled to a third preset voltage value, thereby increasing the conduction time ratio of the switching device and reducing the voltage duration at the power input end; the magnitude of the Zener voltage is determined according to the voltage tolerance capacity at the power input end.

8. An intelligent switching circuit, characterized in that: include: An electric control switch, a switch device, a switch connection power circuit, a controller, a voltage regulation circuit and a protection circuit are arranged between the two connection terminals; The switch connecting the power circuit includes: the switch connecting the power chip; One end of the electronically controlled switch is connected to one end of the two connection terminals; the other end of the electronically controlled switch is respectively connected to one end of the switch device, a power pin of the switch connected to the power supply chip, one end of the protection circuit and a power input terminal of the controller; The other end of the switch device is connected to the other end of the two connection terminals; the control end of the switch device is connected to the control pin of the switch connected power supply chip; The switch connects the voltage division detection pin of the power chip to one end of the voltage regulating circuit and the other end of the protection circuit; The other end of the voltage regulating circuit is connected to the second pin of the controller; The controller is configured to send a driving signal to the voltage regulating circuit via the second pin; The voltage regulating circuit is used to regulate the voltage value at the voltage-dividing detection pin of the switch connected to the power-taking chip under the drive of the drive signal, so as to change the on-off time of the switch device and thereby increase the voltage duration at the power input terminal; The protection circuit is used to change the on-off time of the switching device and reduce the voltage duration at the power input terminal by maintaining the voltage value at the voltage division detection pin when the voltage at the power input terminal continues to rise.

9. An intelligent switching circuit, characterized in that: include: An electric control switch, a switch device, a switch connection power circuit, a controller and a protection circuit are arranged between the two connection terminals; The switch connecting the power circuit includes: the switch connecting the power chip and its auxiliary circuit; One end of the electronically controlled switch is connected to one end of the two wiring terminals; the other end of the electronically controlled switch is respectively connected to one end of the switch device, one end of the protection circuit, a power pin of the power-taking chip connected to the switch, and a power input terminal of the controller; The other end of the switch device is connected to the other end of the two connection terminals; the control end of the switch device is connected to the control pin of the switch connected power supply chip; The other end of the protection circuit is connected to the voltage division detection pin of the power taking chip connected to the switch; The auxiliary circuit includes: a third voltage-dividing resistor and a fourth voltage-dividing resistor; one end of the third voltage-dividing resistor is connected to the other end of the electronically controlled switch, and the other end of the third voltage-dividing resistor is connected to the voltage-dividing detection pin; one end of the fourth voltage-dividing resistor is connected to the other end of the third voltage-dividing resistor, and the other end of the fourth voltage-dividing resistor is set to ground potential; The auxiliary circuit is used to adjust the voltage value at the voltage-dividing detection pin of the switch connected to the power chip, so as to change the on-off time of the switch device, thereby increasing the voltage duration at the power input terminal; The protection circuit is used to change the on-off time of the switching device and reduce the voltage duration at the power input terminal by maintaining the voltage value at the voltage division detection pin when the voltage at the power input terminal continues to rise.

10. The circuit according to claim 8 or 9, characterized in that The protection circuit includes: a common diode, a protection resistor, and a voltage-stabilizing diode; One end of the anode of the common diode is connected to the other end of the electronically controlled switch; one end of the cathode of the common diode is connected to one end of the protection resistor; the other end of the protection resistor is connected to the cathode end of the voltage-stabilizing diode; one end of the anode of the voltage-stabilizing diode is connected to the voltage-dividing detection pin; The protection circuit is used to control the voltage value at the voltage divider detection pin to a third preset voltage value when the voltage regulator diode reaches the Zener voltage, increase the conduction time ratio of the switching device, and reduce the voltage duration at the power input end; the size of the Zener voltage is determined according to the voltage tolerance capacity at the power input end.

11. A smart wall switch, characterized in that: include: A switch panel, wherein the intelligent switch circuit according to any one of claims 1 to 10 is arranged inside the wall covered by the switch panel.

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