Intelligent switch circuit, intelligent switch and multi-control switch system

Abstract

The utility model provides a kind of intelligent switch circuit, intelligent switch and multi-control switch system, it is related to intelligent switch technical field. Among them, the intelligent switch circuit includes control module, detection module, first switch switching module and bypass module, wherein, detection module is also connected with control module, for detecting the electrical parameter between intelligent switch circuit and external switch, and control module is outputted detection signal;Control module is also connected with first switch switching module, for according to detection signal, control the working state of first switch switching module;Working state includes off state and conducting state;Bypass module is parallel with first switch switching module, for if first switch switching module is in off state, then the conducting detection module and phase line or conducting detection module and load.The utility model solves the problem that the reform scheme of using intelligent switch to replace multiple traditional mechanical switches in related technology not only has high cost, but also has large workload.

Description

Technical Field

[0001] This utility model relates to the field of intelligent switch technology, specifically to an intelligent switch circuit, an intelligent switch, and a multi-control switch system. Background Technology

[0002] Multi-control switch systems are typically used to control the same load by installing switches in different locations. For example, a two-control switch system includes two conventional mechanical switches installed on distant walls (e.g., upstairs and downstairs) so that a user can control the same load (e.g., a light) through the two-control switch system.

[0003] With the development of smart switch technology, smart switches can be remotely controlled from any location within the communication range via wireless or wired communication, offering greater flexibility than traditional mechanical switches. In the renovation of multi-control switch systems in old buildings, multiple traditional mechanical switches are typically replaced with smart switches, allowing for multi-control through communication and negotiation between them. Taking a renovated two-control switch system with two smart switches as an example, when one smart switch is triggered, it switches its own switching state and synchronizes this state with the other smart switch via communication negotiation. The other smart switch can then control its own switching state based on the switching state of the first smart switch.

[0004] However, this kind of renovation scheme, which uses smart switches to replace multiple traditional mechanical switches, is not only costly, but also involves rewiring the smart switches, which is a lot of work. Utility Model Content

[0005] This utility model provides an intelligent switch circuit, an intelligent switch, and a multi-control switch system, which solves the problems in related technologies where replacing multiple traditional mechanical switches with intelligent switches is not only costly but also labor-intensive. The technical solution is as follows:

[0006] According to one aspect of the present invention, an intelligent switch circuit includes a control module, a detection module, a first switch switching module, and a bypass module. One end of the detection module is connected to an external switch, and the other end of the detection module is connected to one end of the first switch switching module. The other end of the first switch switching module is connected to a phase line or a load. The detection module is also connected to the control module and is used to detect electrical parameters between the intelligent switch circuit and the external switch, and output a detection signal to the control module. The control module is also connected to the first switch switching module and is used to control the operating state of the first switch switching module according to the detection signal. The operating state includes an open state and a closed state. The bypass module is connected in parallel with the first switch switching module and is used to connect the detection module and the phase line or connect the detection module and the load if the first switch switching module is in the open state.

[0007] Optionally, the intelligent switch circuit further includes a first phase line terminal and a second phase line terminal, one end of the two phase line terminals being connected to the external switch, and the other end of the two phase line terminals being connected to the first switch switching module. The detection module is connected between the first phase line terminal and the first switch switching module or between the second phase line terminal and the first switch switching module.

[0008] Optionally, the first switch switching module includes a first switch switching unit, one end of which is connected to the detection module, and the other end of which is connected to the phase line or the load. The first switch switching unit is also connected to the control module and is used to switch its own working state according to the switch switching signal output by the control module. The switch switching signal is a signal generated by the control module based on the detection signal.

[0009] Optionally, one end of the power module is connected to the live wire, and the other end of the power module is connected to the neutral wire, for drawing power from the neutral and live wires to power each module in the intelligent switch circuit; or the power module is connected to the bypass module, for drawing power from the bypass module to power each module in the intelligent switch circuit.

[0010] Optionally, if the power supply module is connected to the bypass module, the first switch switching module further includes a second switch switching unit, one end of which is connected to the first switch switching unit, and the other end of which is connected to the phase line or the load. The second switch switching unit is also connected to the control module and is used to switch its own working state according to the switch control signal output by the control module.

[0011] Optionally, the detection module includes a first detection module, a second detection module, and a second switch switching module. One end of the first detection module is connected to one end of the second detection module, and the other end of the first detection module is connected to the external switch. The other end of the second detection module is connected to the first switch switching module, and the second detection module and the second switch switching module are connected in parallel. The control module is further configured to control the second switch switching module to switch to the on state if the first switch switching module is in the on state; or, if the first switch switching module is in the off state, control the second switch switching module to switch to the off state.

[0012] Optionally, the detection module includes a first detection module, a second detection module, and a third switch switching module. One end of the first detection module and one end of the second detection module are both connected to the external switch. The other end of the first detection module is connected to the first end of the third switch switching module, and the other end of the second detection module is connected to the second end of the third switch switching module. The third end of the third switch switching module is connected to the first switch switching module. The control module is further configured to, if the first switch switching module is in a conducting state, control the third end of the third switch switching module to be connected to the first end; or, if the first switch switching module is in a disconnected state, control the third end of the third switch switching module to be connected to the second end.

[0013] Optionally, the detection module includes an adjustment input terminal connected to the control module. The adjustment input terminal is used to input a sensitivity adjustment signal output by the control module, so as to control the detection module to adjust the sensitivity of electrical parameter detection according to the sensitivity adjustment signal.

[0014] Optionally, the bypass module is further configured to limit the current flowing through the load to be less than the operating current of the load if the first switch switching module is in the off state.

[0015] Optionally, the intelligent switch circuit further includes a button module connected to the control module, wherein the control module is further configured to receive a trigger signal generated when the button module is triggered, and control the working state of the first switch switching module according to the trigger signal.

[0016] According to one aspect of the present invention, an intelligent switch includes the intelligent switch circuit described above.

[0017] According to one aspect of the present invention, a multi-control switch system includes at least one smart switch as described above, and an external switch connected to the at least one smart switch.

[0018] The beneficial effects of the technical solution provided by this utility model are:

[0019] In the above technical solution, the intelligent switch circuit includes a control module, a detection module, and a first switch switching module. One end of the detection module is connected to an external switch, and the other end of the detection module is connected to one end of the first switch switching module. The other end of the first switch switching module is connected to a phase line or a load. The detection module is also connected to the control module and is used to detect the electrical parameters between the intelligent switch circuit and the external switch, and output a detection signal to the control module. The control module is also connected to the first switch switching module and is used to control the operating state of the first switch switching module to switch between an off state and a on state according to the detection signal. In other words, a multi-control switch system is implemented by using at least one external switch in conjunction with at least one smart switch. The electrical parameters between the smart switch circuit and the external switch are detected by a detection module, and the detection signal corresponding to the electrical parameters is output to the control module. The control module can then identify the working state of the external switch based on the detection signal, thereby enabling the smart switch to control its own working state based on the working state of the external switch. This not only utilizes the original traditional mechanical switches and retains the original wiring method, but also eliminates the need for rewiring and modification. This effectively solves the problem in related technologies where replacing multiple traditional mechanical switches with smart switches is not only costly but also involves a large workload.

[0020] Furthermore, the intelligent switch circuit also includes a bypass module connected in parallel with the first switch switching module. This bypass module is used to connect the detection module and the phase line, or connect the detection module and the load, if the first switch switching module is in the open state. In other words, even if the first switch switching module is in the open state, the detection module can still maintain continuity with the phase line, or with the load, ensuring that the detection module can still detect the electrical parameters between the intelligent switch circuit and the external switch when the external switch's operating state is switching. This allows the control module to continue identifying the external switch's operating state based on the detection signal corresponding to these electrical parameters. This ensures that the intelligent switch can switch its own operating state based on the external switch's operating state, avoiding the situation where the intelligent switch is open, causing the detection module to be unable to detect the electrical parameters between the intelligent switch circuit and the external switch regardless of how the external switch's operating state changes, thus preventing the control module from continuing to identify the external switch's operating state. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of an intelligent switching circuit according to an exemplary embodiment;

[0023] Figure 2 This is a schematic diagram of another intelligent switching circuit according to an exemplary embodiment;

[0024] Figure 3 This is a schematic diagram illustrating one connection method of a detection module according to an exemplary embodiment;

[0025] Figure 4 This is a schematic diagram illustrating another connection method of the detection module according to an exemplary embodiment;

[0026] Figure 5 This is a schematic diagram illustrating the connection between a detection module and a single-pole double-throw type external switch according to an exemplary embodiment;

[0027] Figure 6 This is a schematic diagram of a first switch switching unit according to an exemplary embodiment;

[0028] Figure 7 This is a schematic diagram illustrating one connection method of a power module according to an exemplary embodiment;

[0029] Figure 8 This is a schematic diagram illustrating another connection method of a power module according to an exemplary embodiment;

[0030] Figure 9 This is a schematic diagram illustrating one connection method between the first detection module and the second detection module and the second switch switching module, according to an exemplary embodiment.

[0031] Figure 10 This is a schematic diagram illustrating another connection method between the first detection module and the second detection module and the second switch switching module, according to an exemplary embodiment.

[0032] Figure 11 This is a schematic diagram illustrating the specific implementation of an intelligent switching circuit in an application scenario. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0035] The following is an introduction and explanation of several terms involved in this utility model:

[0036] Single-wire mode: For smart switches using single-wire mode, this is single-wire wiring, meaning the smart switch is only connected to the live wire (represented as L) and the load wire. Therefore, the smart switch can only draw power from the live wire; in other words, the power supply method for this smart switch is single-wire mode. This smart switch can be a single-wire switch or a single / neutral universal switch.

[0037] Neutral-Live Mode: For smart switches using neutral-live mode, this involves wiring with both live and neutral wires. This means the smart switch needs to be connected to the live wire, neutral wire (denoted as N), and load wire simultaneously. The smart switch can draw power from both the live and neutral wires, meaning it's powered in neutral-live mode. This smart switch can be a neutral-live switch or a single / neutral universal switch.

[0038] As mentioned earlier, the renovation scheme of replacing multiple traditional mechanical switches with smart switches is not only costly but also involves rewiring the smart switches, resulting in a significant workload. Therefore, this utility model provides a smart switch circuit that not only utilizes existing traditional mechanical switches and retains the original wiring method but also eliminates the need for rewiring, effectively reducing workload and cost. Accordingly, this smart switch circuit is suitable for smart switches, and particularly for multi-control switch systems that include at least one smart switch and an external switch connected to it.

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0040] Please see Figure 1 and Figure 2A smart switch circuit 110 is applicable to smart switches. The smart switch circuit 110 includes a control module 111, a detection module 112, and a first switch switching module 113. One end of the detection module 112 is connected to an external switch 20, and the other end of the detection module 112 is connected to one end of the first switch switching module 113. The other end of the first switch switching module 113 is connected to a phase line or a load.

[0041] In some embodiments, the control module 111 may be a chip or circuit with computing capabilities, such as an MCU (Microcontroller Unit), CPU (Central Processing Unit), FPGA (Field-Programmable Gate Array), or DSP (Digital Signal Processor), and is not limited herein.

[0042] In some embodiments, the first switch switching module 113 may be a relay, a transistor, or other switch with on / off functions, without limitation. The relay may be a single-pole single-throw type, and the transistor may be a diode, triode, field-effect transistor (MOSFET), etc., without specific limitation.

[0043] In some embodiments, the external switch 20 may be a mechanical switch. The mechanical switch may be a single-pole single-throw type or a single-pole double-throw type; no limitation is made here.

[0044] In some embodiments, the operating states of the external switch 20 include an open state and an on state. For the load, when the external switch 20 is in the open state, it indicates that the load is off, such as turning off a light; when the external switch 20 is in the on state, it indicates that the load is on, such as turning on a light.

[0045] In some embodiments, the detection module 112 is also connected to the control module 111, and is used to detect the electrical parameters between the intelligent switch circuit 110 and the external switch 20, and output a detection signal to the control module 111. As the operating state of the external switch 20 changes, the electrical parameters between the intelligent switch circuit 110 and the external switch 20 will change accordingly. At this time, the detection module 112 can detect the changed electrical parameters between the intelligent switch circuit 110 and the external switch 20, and notify the control module 111 accordingly, so that the control module 111 can identify the operating state of the external switch 20. That is, the detection signal is used to indicate the electrical parameters between the intelligent switch circuit 110 and the external switch 20 detected by the detection module 112. These electrical parameters may include, but are not limited to, the current, voltage, power, etc., between the intelligent switch circuit 110 and the external switch 20.

[0046] In some embodiments, the control module 111 is also connected to the first switch switching module 113, and is used to control the operating state of the first switch switching module 113 according to the detection signal. That is, after the detection module 112 outputs the detection signal, the control module 111 can receive the detection signal, and then can identify the operating state of the external switch 20 according to the electrical parameters between the intelligent switch circuit 110 and the external switch 20 indicated by the detection signal. The operating state of the first switch switching module 113 includes an off state and an on state. It can be understood that the operating state of the first switch switching module 113 is also the operating state of the intelligent switch 10. For the load, when the first switch switching module 113 is in the off state, it indicates that the load is off, such as turning off a light; when the first switch switching module 113 is in the on state, it indicates that the load is on, such as turning on a light. In some embodiments, such as... Figure 2 As shown, the detection module 112 includes an adjustment input terminal 1121 connected to the control module 111. The adjustment input terminal 1121 is used to input the sensitivity adjustment signal output by the control module 111, so as to control the detection module 112 to adjust the sensitivity of the electrical parameter detection according to the sensitivity adjustment signal.

[0047] In some embodiments, such as Figure 2 As shown, the intelligent switch circuit 110 also includes a button module 116 connected to the control module 111. When the button module 116 is triggered (e.g., pressed), it generates a trigger signal and transmits it to the control module 111. Correspondingly, the control module 111 receives the trigger signal generated by the button module 116 and controls the operating state of the first switch switching module 113 based on this trigger signal. For example, assuming the load is a smart light, if the smart light is currently off, when the button module 116 is pressed, it generates a trigger signal. Upon receiving this trigger signal, the control module 111, under the control of the control module 111, switches the operating state of the first switch switching module 113 from the off state to the on state, thus turning on the smart light.

[0048] Continue reading Figure 1 and Figure 2 Taking the detection module 112 for detecting the current between the intelligent switch circuit 110 and the external switch 20 as an example, assuming the load is off, that is, when the external switch 20 is in the open state, the detection module 112 detects that there is no current between the intelligent switch circuit 110 and the external switch 20, and then outputs a detection signal to the control module 111 to indicate that no current is detected, so that the control module 111 can identify that the external switch 20 is in the open state according to the detection signal, thereby controlling the first switch switching module 113 to be in the open state.

[0049] Similarly, assuming the load is on, that is, when the external switch 20 is in the on state, the detection module 112 detects that there is current between the intelligent switch circuit 110 and the external switch 20, and then outputs a detection signal to the control module 111 to indicate that the current is detected. This enables the control module 111 to identify that the external switch 20 is in the on state based on the detection signal, thereby controlling the first switch switching module 113 to be in the on state.

[0050] Based on the above circuit, a multi-control switch system is implemented by using at least one external switch in conjunction with at least one smart switch. The electrical parameters between the smart switch circuit and the external switch are detected by a detection module, and the detection signal corresponding to the electrical parameters is output to the control module. This allows the control module to identify the working state of the external switch based on the detection signal, thereby enabling the smart switch to control its own working state based on the working state of the external switch. This not only utilizes the original traditional mechanical switches and retains the original wiring method, but also eliminates the need for rewiring and modification. This effectively solves the problem in related technologies where the modification scheme of replacing multiple traditional mechanical switches with smart switches is not only costly but also involves a large amount of work.

[0051] As mentioned earlier, if the external switch is in the off state, the control module will control the first switch switching module to be in the off state according to the detection signal currently output by the detection module. At this time, the detection module is also in the off state with the phase line or the load. As a result, no matter how the external switch's operating state changes, the electrical parameters between the intelligent switch circuit and the external switch remain unchanged. Consequently, the control module can no longer accurately identify the change in the external switch's operating state based on the detection signal corresponding to these electrical parameters, ultimately causing the multi-control switch system to fail. Therefore, the inventors propose adding a bypass module to the intelligent switch circuit. This bypass module can ensure that the electrical parameters between the intelligent switch circuit and the external switch change with the switching of the external switch's operating state when the intelligent switch is off, allowing the control module to continue to accurately identify the external switch's operating state based on the detection signal corresponding to these electrical parameters.

[0052] Continue reading Figures 1 to 2 In one exemplary embodiment, the intelligent switch circuit 110 further includes a bypass module 114. The bypass module 114 is connected in parallel with the first switch switching module 113.

[0053] The bypass module 114 is used to connect the continuity detection module 112 and the phase line or the continuity detection module and the load if the first switch switching module 113 is in the off state.

[0054] In other words, when the first switch switching module is in the off state, although the detection module cannot conduct to the phase line or load based on the first switch switching module, the detection module can conduct to the phase line or load based on the bypass module added to the intelligent switch circuit. This allows the electrical parameters between the intelligent switch circuit and the external switch to continue to change accordingly with the change of the external switch's operating state. The control module can continue to accurately identify the operating state of the external switch based on the detection signal corresponding to the electrical parameters, so that the control module can control the operating state of the intelligent switch based on the identified operating state of the external switch, and finally realize the load control function of the multi-control switch system.

[0055] Based on the above circuit, even when the first switch switching module is in the off state, the detection module and the phase line can still be kept connected, or the detection module and the load can still be kept connected, so that when the working state of the external switch is switching, the detection module can still detect the electrical parameters between the intelligent switch circuit and the external switch. This allows the control module to continue to identify the working state of the external switch based on the detection signal corresponding to the electrical parameters. This ensures that the intelligent switch can switch its own working state based on the working state of the external switch, avoiding the situation where the intelligent switch is off, and the detection module cannot detect the electrical parameters between the intelligent switch circuit and the external switch regardless of how the working state of the external switch is switched, thus preventing the control module from continuing to identify the working state of the external switch.

[0056] It should be noted that the bypass module is designed to provide a bypass current across the first switch module when the first switch module is in the off state. This bypass current connects the detection module to the phase line or the load, ensuring that the electrical parameters detected by the detection module between the smart switch circuit and the external switch continue to change accordingly with the operating state of the external switch. The control module can still accurately identify the operating state of the external switch based on the detection signal corresponding to these electrical parameters. Since the first switch module being off indicates that the load is off, the bypass current will remain relatively small to ensure that the load remains off regardless of the bypass current. For example, assuming the load is a smart light, the bypass current will prevent the smart light from lighting up when the light is off, thus avoiding ghosting. Therefore, the bypass module also limits the current flowing through the load to less than the load's operating current if the first switch module is off. This ensures that the load remains off regardless of the bypass current and prevents the load from operating due to the small current flowing through it, thus avoiding abnormal phenomena such as ghosting.

[0057] Please see Figures 3 to 5In an exemplary embodiment, the intelligent switch circuit 110 further includes a first phase line terminal L1 and a second phase line terminal L2. One end of the two phase line terminals is connected to an external switch 20, and the other end of the two phase line terminals is connected to a first switch switching module 113.

[0058] The detection module 112 is connected between the first phase line terminal L1 and the first switch switching module 113, or between the second phase line terminal L2 and the first switch switching module 113. Figure 3 As shown, the detection module 112 is connected between the first phase line terminal L1 and the first switch switching module 113. Figure 4 As shown, the detection module 112 is connected between the second phase line terminal L2 and the first switch switching module 113.

[0059] In some embodiments, the external switch is a single-pole double-throw mechanical switch. The external switch includes a first terminal, a second terminal, and a third terminal. The first terminal is connected to the first phase line, the second terminal is connected to the second phase line, and the third terminal is connected to the load or a phase line. As the operating state of the external switch changes, the third terminal will connect to either the first or second terminal, causing a corresponding change in the electrical parameters between the intelligent switch circuit and the external switch detected by the detection module. This allows the control module to recognize the change in the operating state of the external switch and ultimately control the intelligent switch to change its own operating state.

[0060] Taking the example of a detection module connected between the second phase line terminal and the first switch switching module, and the detection module being used to detect the current between the second phase line terminal of the intelligent switch circuit and an external switch, as follows: Figure 5 As shown, the first terminal C1 of the external switch 20 is connected to the first phase line terminal L1, the second terminal C2 is connected to the second phase line terminal L2, and the third terminal C3 is connected to the load or a phase line. The detection module 112 is connected between the second phase line terminal L2 and the first switch switching module 113. At this time, if the third terminal C3 of the external switch 20 is connected to the first terminal C1, it indicates that the external switch 20 is in the off state; if the third terminal C3 of the external switch 20 is connected to the second terminal C2, it indicates that the external switch 20 is in the on state.

[0061] Based on this, assuming the user wants to turn off the load via external switch 20, the user can control the external switch 20 to be in the off state. That is, the user can control the third terminal C3 of the external switch 20 to be connected to the first terminal C1 (for example, by pressing the button of the external switch 20). At this time, the third terminal C3 of the external switch 20 is disconnected from the second terminal C2. The detection module 112 detects that there is no current between the second phase line terminal L2 of the intelligent switch circuit 110 and the external switch 20, and outputs a detection signal to the control module 111 to indicate that no current is detected. This allows the control module 111 to recognize that the external switch 20 is in the off state based on the detection signal, thereby controlling the first switch switching module 113 to be in the off state.

[0062] Similarly, assuming a user wants to turn on the load via external switch 20, the user can control the external switch 20 to be in the ON state, that is, the user can control the third terminal C3 of external switch 20 to be connected to the second terminal C2 (for example, by pressing the button of external switch 20). At this time, the detection module 112 detects that there is current between the second phase line terminal L2 of the intelligent switch circuit 110 and the external switch 20, and outputs a detection signal to the control module 111 to indicate that the current has been detected. This allows the control module 111 to recognize that the external switch 20 is in the ON state based on the detection signal, thereby controlling the first switch switching module 113 to be in the ON state.

[0063] Conversely, if the detection module is connected between the first phase line terminal and the first switch switching module, then if the third terminal C3 of the external switch 20 is connected to the first terminal C1, it indicates that the external switch 20 is in the on state; if the third terminal C3 of the external switch 20 is connected to the second terminal C2, it indicates that the external switch 20 is in the off state.

[0064] Based on the above circuit, regardless of the type of external switch or the connection method between the detection module and the first switch switching module in the intelligent switch circuit, the electrical parameters between the intelligent switch circuit and the external switch detected by the detection module can be guaranteed. This enables the control module to identify the working state of the external switch and ultimately achieve the purpose of controlling the working state of the intelligent switch itself. This not only allows the use of the original traditional mechanical switch and the retention of the original wiring method, but also eliminates the need for rewiring and modification, further effectively reducing the workload and cost of modification.

[0065] Please see Figures 6 to 8 In an exemplary embodiment, the first switch switching module 113 includes a first switch switching unit 1131, one end of which is connected to the detection module 112, and the other end of which is connected to the phase line or the load.

[0066] In some embodiments, the first switch switching unit 1131 is also connected to the control module 111 and is used to switch its own operating state according to the switch switching signal output by the control module 111. The switch switching signal is a signal generated by the control module 111 based on the detection signal.

[0067] In some embodiments, the first switching unit 113 may be a relay, a transistor, or other switch with on / off functions, without limitation. The relay may be a single-pole single-throw type, and the transistor may be a diode, triode, MOSFET, etc., without specific limitation.

[0068] Based on this, taking the first switch switching unit 113 as a single-pole single-throw relay as an example, after the detection module 112 detects the electrical parameters between the intelligent switch circuit 110 and the external switch 20, it can output a corresponding detection signal to the control module 111, so that the control module 111 can generate a corresponding switch switching signal based on the detection signal and transmit the switch switching signal to the relay, so that the single-pole single-throw relay is disconnected or turned on based on the switch switching signal.

[0069] In some embodiments, the smart switch is powered in a neutral-live mode. For example... Figure 7 As shown, when the power supply mode of the smart switch is neutral-live mode, one end of the power module 115 is connected to the live wire L, and the other end of the power module 115 is connected to the neutral wire N. A current loop is formed between the live wire L, the power module 115 and the neutral wire N. At this time, the power module 115 is used to draw power from the neutral wire and the live wire to supply power to each module in the smart switch circuit 110, so that even if the load loop is disconnected, each module in the smart switch circuit 110 can continue to work normally.

[0070] Based on this, when the first switch switching unit 1131 is in the off state, the detection module 112 is connected to the live wire L through the bypass module 114, and the power supply module 115 provides power to the detection module 112 for normal operation, so that the detection module 112 can operate normally and continue to detect the electrical parameters between the smart switch circuit 110 and the external switch 20, and output the corresponding detection signal to the control module 111, so that the control module 111 can identify the working state of the external switch 20 based on the detection signal, and then control the working state of the first switch switching unit 1131, that is, control the working state of the smart switch itself.

[0071] When the first switch switching unit 1131 is in the conducting state, the bypass module 114 is short-circuited. At this time, the detection module 112 is connected to the live wire L through the first switch switching unit 113 in the conducting state, and the power supply module 115 continues to supply power to the detection module 112 for normal operation, so as to output a detection signal for the control module 111 to identify the working state of the external switch 20, and then control the working state of the smart switch itself.

[0072] It is worth mentioning that, Figure 7 In this embodiment, one end of the load 30 is connected to the neutral wire N, and the other end of the load 30 is connected to the external switch 20. In other embodiments, the load 30 is not limited to the above connection method and may have other connection methods. For example, one end of the external switch 20 is connected to the live wire L, and the other end of the external switch 20 is connected to the detection module 112. One end of the load 30 is connected to the neutral wire N, and the other end of the load 30 is connected to the other end of the first switch switching unit 1131. That is to say, the detection module 112 can be connected to the live wire L (phase wire) or the load 30 through the bypass module 114, which is not a specific limitation.

[0073] In some embodiments, the smart switch is powered by a single-wire mode. For example... Figure 8 As shown, when the power supply mode of the smart switch is single-fire mode, the power module 115 is connected to the bypass module 114 and is used to draw power from the bypass module 114 to supply power to each module in the smart switch circuit 110.

[0074] As mentioned earlier, when the first switch unit 1131 is in the off state, the detection module 112 can still be connected to the live wire L through the bypass module 114 and start working under the power supply of the power module 115. This will not be elaborated further here. However, when the first switch unit 1131 is in the on state, the bypass module 114 will be short-circuited, and the power module 115 can no longer draw power from the bypass module 114. In this case, a second switch unit will be connected in series with the first switch unit 1131 to ensure that the power module 115 can still draw power from the bypass module 114 when the first switch unit 1131 is in the on state, so that all modules in the intelligent switch circuit 110 are always in a working state. (Continue reading...) Figure 8 If the power module 115 is connected to the bypass module 114, the first switch switching module 113 further includes a second switch switching unit 1132. One end of the second switch switching unit 1132 is connected to the first switch switching unit 1131, and the other end of the second switch switching unit 1132 is connected to the live wire L. The second switch switching unit 1132 is also connected to the control module 111 and is used to switch its own operating state according to the switch control signal output by the control module 111.

[0075] In some embodiments, the second switch unit 1132 can be a MOSFET, which can be of PMOS or NMOS type, without limitation. Under the action of the switch control signal output by the control module 111, the switch control signal can be a pulse signal, causing the MOSFET to intermittently turn on and off; or, the switch control signal can be a high-level signal or a low-level signal, and the control module 111 outputs a high-level signal or a low-level signal at short intervals to control the intermittent turning of the MOSFET on and off. When the MOSFET is in the off state, current flows through the bypass module 114, thus allowing power to continue supplying power to the power module 115 even when the first switch unit 1131 is in the on state, thereby supplying power to each module in the intelligent switch circuit 110. This ensures that the detection module 112 can always output a detection signal for the control module 111 to identify the operating state of the external switch 20, and thus control the operating state of the intelligent switch itself. It should be noted that since the intermittent on and off time of the MOSFET is very short, it will not affect the original working state of the load. For example, assuming the load is a smart lamp, the intermittent on and off time of the MOSFET will not affect the brightness of the smart lamp.

[0076] It is worth mentioning that, Figure 8 In this embodiment, one end of the load 30 is connected to the neutral wire N, and the other end of the load 30 is connected to the external switch 20. In other embodiments, the load 30 is not limited to the above connection method and may have other connection methods. For example, one end of the external switch 20 is connected to the live wire L, and the other end of the external switch 20 is connected to the detection module 112. One end of the load 30 is connected to the neutral wire N, and the other end of the load 30 is connected to the other end of the second switch switching unit 1132. That is to say, the other end of the second switch switching unit 1132 may be connected to the live wire L (phase wire) or the load 30, which is not a specific limitation.

[0077] Based on the above circuit, regardless of whether the power supply mode of the smart switch is single-wire or neutral-wire, the detection module can always be in working state under the action of the bypass module, so as to output detection signals for the control module to identify the working state of the external switch, and ultimately achieve the purpose of controlling the working state of the smart switch itself. This not only makes use of the original traditional mechanical switch and retains the original wiring method, but also eliminates the need for rewiring and modification, further effectively reducing the workload and cost of modification.

[0078] Please see Figures 9 to 10In one exemplary embodiment, the detection module 112 includes a first detection module 1121 and a second detection module 1122. The first detection module 1121 is used to detect the electrical parameters between the intelligent switch circuit 110 and the external switch 20 when the first switch switching module is in a conducting state, and the second detection module 1122 is used to detect the electrical parameters between the intelligent switch circuit 110 and the external switch 20 when the first switch switching module is in a disconnected state.

[0079] In some embodiments, the first detection module 1121 and the second detection module 1122 are connected in series. For example... Figure 9 As shown, the detection module 112 includes a first detection module 1121, a second detection module 1122, and a second switch switching module 1123. One end of the first detection module 1121 is connected to one end of the second detection module 1122, and the other end of the first detection module 1121 is connected to an external switch 20. The other end of the second detection module 1122 is connected to the first switch switching module 1123, and the second detection module 1122 and the second switch switching module 1123 are connected in parallel. The control module 111 is further configured to control the second switch switching module 1123 to switch to the on state if the first switch switching module 113 is in the on state; or, if the first switch switching module 113 is in the off state, control the second switch switching module 1123 to switch to the off state.

[0080] In some embodiments, the second switch switching module 1123 may be a relay, a transistor, or other switch with on / off functions, without limitation. The relay may be a single-pole single-throw type, and the transistor may be a diode, triode, MOSFET, etc., without specific limitation.

[0081] Based on this, when the first switch switching module 113 is in the conducting state, due to the load being turned on, there will be a large electrical parameter between the intelligent switch circuit 110 and the external switch 20, for example, a large current will flow. Then, the control module 111 controls the second switch switching module 1123 to be in the conducting state, so that the second detection module 1122 is short-circuited, that is, the second detection module 1122 is controlled to not work, while the first detection module 1121 is controlled to work to detect the electrical parameter between the intelligent switch circuit 110 and the external switch 20, so as to output a detection signal for the control module 111 to identify the working state of the external switch, and then control the working state of the intelligent switch itself.

[0082] When the first switch switching module 113 is in the off state, the electrical parameters between the intelligent switch circuit 110 and the external switch 20 are small due to the load being off. For example, the current flowing through them is small. Therefore, the control module 111 controls the second switch switching module 1123 to be in the off state, that is, controls the second detection module 1122 to work and detect the electrical parameters between the intelligent switch circuit 110 and the external switch 20 so as to output a detection signal for the control module 111 to identify the working state of the external switch and thus control the working state of the intelligent switch itself.

[0083] In some embodiments, the first detection module 1121 and the second detection module 1122 are connected in parallel. For example... Figure 10 As shown, the detection module 112 includes a first detection module 1121, a second detection module 1122, and a third switch switching module 1124. One end of the first detection module 1121 and one end of the second detection module 1122 are both connected to the external switch 20. The other end of the first detection module 1121 is connected to the first end L11 of the third switch switching module 1124, and the other end of the second detection module 1122 is connected to the second end L12 of the third switch switching module 1124. The third end L13 of the third switch switching module 1124 is connected to the first switch switching module 113. The control module 111 is further configured to, if the first switch switching module 113 is in a conducting state, control the third end L13 of the third switch switching module 1124 to be connected to the first end L11; or, if the first switch switching module 113 is in a disconnected state, control the third end L13 of the third switch switching module 1124 to be connected to the second end L12.

[0084] In some embodiments, the third switch switching module 1124 may be a relay, which may be a single-pole double-throw type.

[0085] Based on this, when the first switch switching module 113 is in the conducting state, due to the load being turned on, the intelligent switch circuit 110 and the external switch 20 will have a large electrical parameter value, for example, a large current will flow. Then, the control module 111 controls the third terminal L13 of the third switch switching module 1124 to be connected to the first terminal L11, that is, controls the first detection module 1121 to work, detects the electrical parameters between the intelligent switch circuit 110 and the external switch 20, so as to output a detection signal for the control module 111 to identify the working state of the external switch, and then control the working state of the intelligent switch itself.

[0086] When the first switch switching module 113 is in the off state, the electrical parameters between the intelligent switch circuit 110 and the external switch 20 are small due to the load being off. For example, the current flowing through is small. Therefore, the control module 111 controls the third terminal L13 of the third switch switching module 1124 to conduct with the second terminal L12, that is, controls the second detection module 1122 to work and detect the electrical parameters between the intelligent switch circuit 110 and the external switch 20, so as to output a detection signal for the control module 111 to identify the working state of the external switch, and then control the working state of the intelligent switch itself.

[0087] Based on the above circuit, as the working state of the first switch switching module changes, the two detection modules can switch to work to save energy consumption and facilitate the output of detection signals for the control module to identify the working state of the external switch, ultimately achieving the purpose of controlling the working state of the smart switch itself. This not only allows the use of the original traditional mechanical switch and the retention of the original wiring method, but also eliminates the need for rewiring and modification, further effectively reducing the workload and cost of modification.

[0088] In one application scenario, a multi-control switch system includes at least one smart switch and an external switch connected to the at least one smart switch, wherein the at least one smart switch includes the smart switch circuit described in the above embodiments. Now, in conjunction with... Figure 11 Taking a two-control switch system as an example, the working principle of a two-control switch system will be explained in detail below:

[0089] like Figure 11 As shown, the dual-control switch system includes a smart switch and a mechanical switch connected to the smart switch.

[0090] The intelligent switch includes a current detection module (detection module), an MCU module (control module), a single-phase live / neutral power supply module (power supply module), a light-off current path (bypass module), a relay (first switching unit), and a MOSFET (second switching unit). The intelligent switch also includes output terminals Lout1 (first phase line terminal) and Lout2 (second phase line terminal). The current detection module is connected between output terminal Lout2 and the relay, and includes an Isen_out terminal connected to the MCU module to output the Isen_out signal (detection signal). The single-phase live / neutral power supply module is connected to the light-off current path, drawing power from it to supply power to the various modules in the intelligent switch. The light-off current path is also connected in parallel with a circuit formed by the relay and MOSFET connected in series; the parallel node on the MOSFET side is connected to the live wire L. Both the relay and the MOSFET are controlled by the MCU module to turn on or off.

[0091] The mechanical switch is a single-pole double-throw type, including COM-1, C1, and C2 terminals. The C1 terminal is connected to the output terminal Lout1, the C2 terminal is connected to the output terminal Lout2, the COM-1 terminal is connected to one end of the load lamp, and the other end of the load lamp is connected to the live wire N.

[0092] The smart switch also includes a button panel (i.e., a button module), which generates a trigger signal when pressed, so that the MCU module controls the relay to turn on or off.

[0093] In a smart switch, the current detection module includes an adjustment input terminal Gain_SEL to input the Gain_SEL signal (i.e., the sensitivity adjustment signal) to adjust the sensitivity of electrical parameter detection.

[0094] In this application scenario, the mechanical switch COM-1 terminal can switch between C1 and C2 terminals. The current detection module detects whether current flows through the output terminal Lout2 to output the Isen_out signal to the MCU module, so that it can identify the working state of the mechanical switch. In other words, the MCU module can identify whether the mechanical switch COM-1 terminal is currently connected to C1 or C2.

[0095] When the relay is in the off state, if the mechanical switch button is moved to terminal C2 (for example, C2 corresponds to the down button of a rocker switch being pressed down and the up button being released), connecting terminal COM-1 to terminal C2, current will flow from the output terminal Lout2. The specific current path is: live wire L → light-off current path → Lout node → current detection module → output terminal Lout2 → terminal C2 → terminal COM-1 → load Lamp → neutral wire N. The current detection module outputs an Isen_out signal from the Isen_out terminal to the MCU module to indicate that current is flowing through the output terminal Lout2. The MCU module can then determine the current position of the mechanical switch button. For terminal C2; similarly, if the mechanical switch button is toggled to terminal C1 (for example, C1 corresponds to the up button of a rocker switch being pressed down and the down button being released), making COM-1 connected to terminal C1, then the current flows to the output terminal Lout1. The specific current path is: live wire L → light-off current path → Lout node → output terminal Lout1 → terminal C1 → terminal COM-1 → load Lamp → neutral wire N. At this time, no current flows through the output terminal Lout2. The current detection module Isen_out outputs an Isen_out signal to indicate that no current flows through the output terminal Lout2. The MCU module then determines that the current position of the mechanical switch button is terminal C1.

[0096] When the relay is in the ON state, regardless of whether the mechanical switch button is to C1 or C2, the load is connected to the live and neutral wires (L / N) to form a circuit and light up. At this time, the current is relatively large, and the opening and closing of the load is controlled by the smart switch. For example, assuming that the mechanical switch button is to C1 to turn off the load and to C2 to turn it on, when the mechanical switch button is tossed from C2 to C1, the smart switch detects that the button is currently to C1 and disconnects its relay, thus turning off the load. When the mechanical switch button is tossed from C1 to C2, the smart switch detects that the button is currently to C2 and connects its relay, thus turning on the load.

[0097] Based on the aforementioned application scenarios, improvements to the hardware of the smart switch circuit in the smart switch enable it to be compatible with existing dual-control switch systems. Users can replace one of the mechanical switches in an existing dual-control switch system (including dual mechanical switches) with the smart switch, connecting it in series with the other mechanical switch to control the load together. A current detection module is installed at one of the smart switch's output terminals. By detecting whether current flows through this output terminal and connecting a light-off current path in parallel across the relay, the system can detect current flow even when the relay is off, thus determining whether the other mechanical switch is connected to this output terminal. This allows the system to identify the current position of the mechanical switch, enabling the MCU module within the smart switch to control the relay to perform relevant operations based on the current position of the mechanical switch. This achieves the transformation of the existing dual-control switch system. Therefore, it not only utilizes the existing mechanical switches in the dual-control switch system without incurring additional costs but also retains the original wiring method, eliminating the need for rewiring and reducing the workload of the transformation.

[0098] The above description is only a partial embodiment of the present utility model. 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 utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An intelligent switching circuit, characterized in that, The intelligent switch circuit includes a control module, a detection module, a first switch switching module, and a bypass module. One end of the detection module is connected to an external switch, and the other end of the detection module is connected to one end of the first switch switching module. The other end of the first switch switching module is connected to a phase line or a load. The detection module is also connected to the control module and is used to detect the electrical parameters between the intelligent switch circuit and the external switch, and output a detection signal to the control module. The control module is also connected to the first switch switching module and is used to control the working state of the first switch switching module according to the detection signal; the working state includes an off state and a on state. The bypass module is connected in parallel with the first switch switching module and is used to connect the detection module and the phase line or the detection module and the load if the first switch switching module is in the off state.

2. The circuit as described in claim 1, characterized in that, The intelligent switch circuit further includes a first phase line terminal and a second phase line terminal. One end of each phase line terminal is connected to the external switch, and the other end of each phase line terminal is connected to the first switch switching module. The detection module is connected between the first phase line terminal and the first switch switching module, or between the second phase line terminal and the first switch switching module.

3. The circuit as described in claim 1, characterized in that, The first switch switching module includes a first switch switching unit, one end of which is connected to the detection module, and the other end of which is connected to the phase line or the load. The first switch switching unit is also connected to the control module and is used to switch its own working state according to the switch switching signal output by the control module; the switch switching signal is a signal generated by the control module based on the detection signal.

4. The circuit as described in claim 3, characterized in that, The intelligent switch circuit also includes a power supply module, wherein... One end of the power module is connected to the live wire, and the other end is connected to the neutral wire, for drawing power from the live and neutral wires to power the various modules in the intelligent switch circuit; or The power module is connected to the bypass module and is used to draw power from the bypass module to power each module in the intelligent switch circuit.

5. The circuit as described in claim 4, characterized in that, If the power supply module is connected to the bypass module, the first switch switching module further includes a second switch switching unit, one end of which is connected to the first switch switching unit, and the other end of which is connected to the phase line or the load. The second switch switching unit is also connected to the control module and is used to switch its own working state according to the switch control signal output by the control module.

6. The circuit as described in claim 1, characterized in that, The detection module includes a first detection module, a second detection module, and a second switch switching module. One end of the first detection module is connected to one end of the second detection module, and the other end of the first detection module is connected to the external switch. The other end of the second detection module is connected to the first switch switching module, and the second detection module and the second switch switching module are connected in parallel. The control module is further configured to control the second switch switching module to switch to the on state if the first switch switching module is in the on state; or to control the second switch switching module to switch to the off state if the first switch switching module is in the off state.

7. The circuit as described in claim 1, characterized in that, The detection module includes a first detection module, a second detection module, and a third switch switching module. One end of the first detection module and one end of the second detection module are both connected to the external switch. The other end of the first detection module is connected to the first end of the third switch switching module, the other end of the second detection module is connected to the second end of the third switch switching module, and the third end of the third switch switching module is connected to the first switch switching module. The control module is further configured to, if the first switch switching module is in a conducting state, control the third terminal of the third switch switching module to be connected to the first terminal; or, if the first switch switching module is in a disconnected state, control the third terminal of the third switch switching module to be connected to the second terminal.

8. The circuit as described in claim 1, characterized in that, The detection module includes an adjustment input terminal connected to the control module. The adjustment input terminal is used to input the sensitivity adjustment signal output by the control module, so as to control the detection module to adjust the sensitivity of electrical parameter detection according to the sensitivity adjustment signal.

9. The circuit as described in claim 1, characterized in that, The bypass module is further configured to limit the current flowing through the load to be less than the operating current of the load if the first switch switching module is in the off state.

10. The circuit as described in claim 1, characterized in that, The intelligent switch circuit also includes a button module connected to the control module, wherein... The control module is also configured to receive a trigger signal generated when the button module is triggered, and control the working state of the first switch switching module according to the trigger signal.

11. A smart switch, characterized in that, Including the intelligent switching circuit as described in any one of claims 1 to 10.

12. A multi-control switch system, characterized in that, It includes at least one smart switch as described in claim 11, and an external switch connected to the at least one smart switch.

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