阅读说明：本技术 一种单火线开关电路及其控制方法 (Single-live-wire switching circuit and control method thereof ) 是由 �龙昊 于 2021-03-25 设计创作，主要内容包括：本发明公开了一种单火线开关电路及其控制方法,通过对开关面板中的电路优化排布设计,对于在两个开关面板控制一个灯负载的应用场合,不论其中一个面板工作在何种状态下,另外一个面板均可在通态或断态下单独实现取电,实现在不同地点的开关面板独立控制灯负载的亮灭。本发明的单火线开关电路在不改变原有的单火线线路结构条件下,实现智能开关改造优化,有效应用于智能家居场合。(The invention discloses a single live wire switch circuit and a control method thereof, wherein through the optimized arrangement design of circuits in switch panels, for the application occasion that two switch panels control one lamp load, no matter which state one of the switch panels works, the other panel can independently realize power supply in an on state or an off state, and the switch panels in different places independently control the on-off of the lamp load. The single-live-wire switching circuit realizes the transformation and optimization of an intelligent switch under the condition of not changing the original single-live-wire line structure, and is effectively applied to intelligent household occasions.)

1. A single live wire switch circuit is characterized in that the switch circuit comprises a single live wire connecting end, a first switch unit, two paths of wire channels, an on-state power taking circuit, an off-state power taking circuit and an energy storage element,

the single live wire connecting end is connected with an external single live wire,

the on-state electricity taking circuit is connected with the single live wire connecting end,

the first switch unit comprises a fixed connecting end and a movable connecting end, the fixed connecting end is connected with the on-state electricity taking circuit,

the two electric wire channels are provided with a first connecting end and a second connecting end, the movable connecting end of the first switch unit is in contact connection with the first connecting end or the second connecting end,

the off-state electricity taking circuit is connected with nodes on the two electric wire channels respectively, when the single live wire switch circuit controls the load to be switched on, the on-state electricity taking circuit stores energy for the energy storage element, and when the single live wire switch circuit controls the load to be switched off, the off-state electricity taking circuit stores energy for the energy storage element.

2. The single fire line switch circuit of claim 1, wherein the on-take circuit comprises a second switch, an on-take control circuit, and a first diode,

the first end of the second switch is connected with the single live wire connecting end, the second end of the second switch is connected with the fixed connecting end of the first switch unit,

the on-state electricity-taking control circuit is connected with the energy storage element, is connected with the control end of the second switch and is used for controlling the on-off state of the second switch,

the anode of the first diode is connected with the second end of the second switch, and the cathode of the first diode is connected with the energy storage element.

3. The single fire wire switch circuit of claim 2, wherein the second switch comprises a field effect transistor or the second switch comprises a bipolar transistor and a diode.

4. The single hot wire switch circuit of claim 1, wherein the power-off circuit comprises a second diode, a third diode, and a power-off control circuit,

anodes of the second diode and the third diode are respectively connected to nodes on the two electric wire channels,

cathodes of the second diode and the third diode are connected to the off-state power-taking control circuit, and an output end of the off-state power-taking control circuit is connected to the energy storage element.

5. The single fire wire switching circuit of claim 1 wherein the single fire wire connection is a single fire wire input or a single fire wire output.

6. The single hot wire switch circuit of claim 1, further comprising a driver circuit and a control chip,

the energy storage element provides working voltage for the control chip,

the control chip generates a switch control signal and transmits the switch control signal to the driving circuit so as to control the switch state of the first switch unit.

7. The single hot wire switch circuit of claim 6, further comprising a switch panel,

the switch panel is provided with a panel indicating mark corresponding to the first switch unit, the indicating mark is in communication connection with the control chip, and a user controls the on or off of the load through the indicating mark.

8. A single live wire switch circuit is characterized by comprising two switch circuits connected between the input end of a single live wire and the output end of the single live wire,

each circuit of switch circuit comprises a single live wire connecting end, a first switch unit, two paths of wire channels, an on-state power taking circuit, an off-state power taking circuit and an energy storage element,

the on-state power taking circuit is connected with the single-live-wire connecting end, the first switch unit comprises a fixed connecting end and a movable connecting end, the fixed connecting end is connected with the on-state power taking circuit, the two paths of electric wire channels are provided with a first connecting end and a second connecting end, and the movable connecting end of the first switch unit is in contact connection with the first connecting end or the second connecting end; the off-state electricity taking circuit is respectively connected with nodes on the two electric wire channels, when the single live wire switch circuit controls the load to be switched on, the on-state electricity taking circuit is used for storing energy for the energy storage element, when the single live wire switch circuit controls the load to be switched off, the off-state electricity taking circuit is used for storing energy for the energy storage element,

the single live wire connecting ends of the two switching circuits are respectively connected with the single live wire input end and the single live wire output end;

the two electric wire channels of the two switching circuits are connected in a one-to-one correspondence manner, so that the two switching circuits are connected between the input end and the output end of the single live wire.

9. The single hot wire switch circuit as claimed in claim 8, wherein one of the two-way switch circuit is connected to the load.

10. The single hot wire switch circuit as claimed in claim 8, wherein the two switching circuits control the load to be turned on or off at different points and at different times.

Technical Field

The invention relates to the technical field of power electronics, in particular to a single-live-wire switching circuit and a control method thereof.

Background

Along with the quick popularization of intelligent house, also being intelligent gradually to the control switch of domestic or office area illumination, traditional lighting control generally adopts mechanical type flush mounting plate of switch, integrated monolithic processor, low-power consumption wifi and control chip such as wireless module in the flush mounting plate of switch need guarantee the reliability of power consumption.

Many occasions use in current building and need realize the bright of different places (for example door and head of a bed) control lighting load and go out, and what switch box wiring mostly adopted among the mechanical type flush mounting plate is single live wire connected mode, consequently, when intelligent flush mounting plate replaces traditional flush mounting plate of switch, need reform transform or optimize single live wire flush mounting plate of switch, otherwise in the control occasion of two or more than two panels, the condition that single live wire flush mounting plate of switch's control circuit can not get the electricity can appear.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a single live wire switch circuit, so as to solve the technical problem that the control circuit of the intelligent switch panel cannot take power at different switch locations in the prior art.

The technical solution of the present invention is to provide a single live wire switch circuit, the switch circuit includes a single live wire connection end, a first switch unit, two electric wire channels, an on-state power-taking circuit, an off-state power-taking circuit and an energy storage element, the single live wire connection end is connected to an external single live wire, the on-state power-taking circuit is connected to the single live wire connection end, the first switch unit includes a fixed connection end and a movable connection end, the fixed connection end is connected to the on-state power-taking circuit, the two electric wire channels have a first connection end and a second connection end, the movable connection end of the first switch unit is in contact connection with the first connection end or the second connection end, the off-state power-taking circuit is respectively connected to nodes on the two electric wire channels, when the single live wire switch circuit controls a load to be turned on, the on-state power taking circuit stores energy for the energy storage element, and the off-state power taking circuit stores energy for the energy storage element when the single live wire switch circuit controls the load to be turned off.

Preferably, the on-state power-taking circuit comprises a second switch, an on-state power-taking control circuit and a first diode, a first end of the second switch is connected with the single-live-wire connecting end, a second end is connected with the fixed connecting end of the first switch unit, the on-state power-taking control circuit is connected with the energy storage element, the on-state power-taking control circuit is connected with a control end of the second switch and used for controlling the switching state of the second switch, an anode of the first diode is connected with a second end of the second switch, and a cathode of the first diode is connected with the energy storage element.

Preferably, the second switch comprises a field effect transistor or the second switch comprises a bipolar transistor and a diode.

Preferably, the off-state power taking circuit comprises a second diode, a third diode and an off-state power taking control circuit, anodes of the second diode and the third diode are respectively connected to nodes on the two electric wire channels,

cathodes of the second diode and the third diode are connected to the off-state power-taking control circuit, and an output end of the off-state power-taking control circuit is connected to the energy storage element.

Preferably, the single live wire connecting end is a single live wire input end or a single live wire output end.

Preferably, the single-live-wire switch circuit further includes a driving circuit and a control chip, the energy storage element provides a working voltage for the control chip, and the control chip generates a switch control signal and transmits the switch control signal to the driving circuit to control the on-off state of the first switch unit.

Preferably, the single live wire switch circuit further comprises a switch panel, a panel indication mark corresponding to the first switch unit is arranged on the switch panel, the indication mark is in communication connection with the control chip, and a user controls the load to be switched on or off through the indication mark.

The second aspect provides a single-live-wire switch circuit, which comprises two switch circuits connected between an input end of a single-live-wire and an output end of the single-live-wire, wherein each switch circuit comprises a single-live-wire connecting end, a first switch unit, two wire channels, an on-state electricity-taking circuit, an off-state electricity-taking circuit and an energy storage element, the on-state electricity-taking circuit is connected with the single-live-wire connecting end, the first switch unit comprises a fixed connecting end and a movable connecting end, the fixed connecting end is connected with the on-state electricity-taking circuit, the two wire channels are provided with a first connecting end and a second connecting end, and the movable connecting end of the first switch unit is in contact connection with the first connecting end or the second connecting end; the off-state power taking circuit is respectively connected with nodes on the two electric wire channels, when the single live wire switch circuit controls the load to be switched on, the on-state power taking circuit is used for storing energy for the energy storage element, when the single live wire switch circuit controls the load to be switched off, the off-state power taking circuit is used for storing energy for the energy storage element, and the single live wire connecting ends of the two switching circuits are respectively connected with the single live wire input end and the single live wire output end; the two electric wire channels of the two switching circuits are correspondingly connected one by one, so that the two switching circuits are connected between the input end and the output end of the single live wire.

Preferably, one of the two switching circuits is connected to the load.

Preferably, the two switching circuits respectively control the on or off of the load at different times and different points.

Preferably, each path of the power-on circuit includes a second switch, a power-on control circuit and a first diode, a first end of the second switch is connected to the single-live-wire connection end, a second end of the second switch is connected to the fixed connection end of the first switch unit, the power-on control circuit is connected to the energy storage element, the power-on control circuit is connected to a control end of the second switch and is used for controlling a switching state of the second switch, an anode of the first diode is connected to a second end of the second switch, and a cathode of the first diode is connected to the energy storage element, wherein the second switch includes a field effect transistor or includes a bipolar transistor and a diode.

Preferably, each off-state power-taking circuit comprises a second diode, a third diode and an off-state power-taking control circuit, anodes of the second diode and the third diode are respectively connected to nodes on the two electric wire channels, cathodes of the second diode and the third diode are connected to the off-state power-taking control circuit, and an output end of the off-state power-taking control circuit is connected to the energy storage element.

Preferably, each switching circuit further includes a driving circuit and a control chip, the energy storage element provides a working voltage for the control chip, and the control chip generates a switching control signal and transmits the switching control signal to the driving circuit to control the switching state of the first switching unit.

A third aspect provides a control method for a single live wire switch circuit, where the single live wire switch circuit includes two switch circuits connected between a single live wire input end and a single live wire output end, each switch circuit includes a single live wire connection end, a first switch unit, two wire channels, an on-state power-taking circuit, an off-state power-taking circuit, and an energy storage element, and the single live wire connection ends of the two switch circuits are respectively connected with the single live wire input end and the single live wire output end; the two electric wire channels of the two switching circuits are correspondingly connected one by one so that the two switching circuits are connected between the input end and the output end of the single live wire,

when the first switch unit in the two switch circuits is connected with the same wire channel of the two wire channels, the two switch circuits are both the on-state electricity taking circuit to take electricity to the energy storage element; when the first switch unit in the two switch circuits is connected with different one of the two wire channels, the two switch circuits are both off-state power taking circuits to take power to the energy storage element.

Preferably, the two switching circuits respectively take power in the positive half cycle and the negative half cycle of the external alternating current input received by the single live wire switching circuit.

By adopting the circuit structure of the invention, through the circuit arrangement design in the switch panels, for the application occasion that two switch panels control one lamp load, no matter in which state one of the panels works, the other panel can independently realize power supply in the on state or the off state, and the switch panels in different places can independently control the on and off of the lamp load. The single-live-wire switching circuit realizes the transformation and optimization of an intelligent switch under the condition of not changing the original single-live-wire line structure, and is effectively applied to intelligent household occasions.

Drawings

Fig. 1 is a circuit block diagram of a single fire wire switch circuit according to the present invention.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to only these embodiments. The invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention.

In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a simplified form and are not to precise scale, which is only used for convenience and clarity to assist in describing the embodiments of the present invention.

Referring to fig. 1, which is a circuit block diagram of a single live wire switch circuit according to the present invention, in an example, the single live wire switch circuit includes two switching circuits between the single live wire input terminal and the single live wire output terminal, such as a switching circuit 1 (denoted as "panel 1") and a switching circuit 2 (denoted as "panel 2") in fig. 1, where each switching circuit includes a single live wire connection terminal, a first switching unit, two wire channels, an on-state power-taking circuit, an off-state power-taking circuit, and an energy storage element, such as a single live wire connection terminal a point in the panel 1 in fig. 1, and a single live wire connection terminal B point in the panel 2.

Illustratively, the on-state power taking circuit is connected with the single-live-wire connecting end, the first switch unit comprises a fixed connecting end and a movable connecting end, the fixed connecting end is connected with the on-state power taking circuit, the two-way electric wire channel is provided with a first connecting end and a second connecting end, the movable connecting end of the first switch unit is in contact connection with the first connecting end or the second connecting end, and the off-state power taking circuit is respectively connected with nodes on the two-way electric wire channel. When the single live wire switching circuit controls the load to be switched on, the energy storage element is stored with energy by using the on-state power taking circuit, when the load is controlled to be switched off by using the single live wire switching circuit, the energy storage element is stored with energy by using the off-state power taking circuit, and the single live wire connecting ends of the two switching circuits are respectively connected with the single live wire input end (such as point A) and the single live wire output end (such as point B); the two electric wire channels of the two switching circuits are connected in a one-to-one correspondence manner, and are as shown in a channel 1 and a channel 2 in fig. 1, so that the two switching circuits are connected between the input end and the output end of the single live wire. The switching action of the first switching unit controls the on or off of the load.

In one embodiment, the on-state power-taking circuit in each switch circuit includes a second switch Q11, an on-state power-taking control circuit 1 and a first diode D11, here, the circuit in the panel 1 is taken as an example, and the following are the same, the first end of the second switch is connected with the single live wire connection end a point, the second end is connected with the fixed connection end of the first switch unit, the on-state power-taking control circuit is connected with the energy storage element C1, the on-state power-taking control circuit is connected with the control end of the second switch Q11, and is used for controlling the switching state of the second switch to control the voltage stability of the energy storage element C1 so as to provide stable supply voltage for a control chip, the anode of the first diode is connected with the second end of the second switch, and the cathode is connected with the energy storage element. Here, the second switch Q11 includes a field effect transistor or the second switch includes a bipolar transistor and a diode. Here, the on-state power supply control circuit has a conventional circuit structure, and is composed of a comparator, an error amplifier, a switching tube, and the like. The second switch comprises a field effect transistor or the second switch comprises a bipolar transistor and a diode.

In one embodiment, the off-state power-taking circuit in each switch circuit includes a second diode D12, a third diode D13 and an off-state power-taking control circuit 1, anodes of the second diode D12 and the third diode D13 are respectively connected to nodes on the two electric wire channels, such as a point C and a point D in fig. 1, cathodes of the second diode D12 and the third diode D13 are both connected to the off-state power-taking control circuit 1, and an output end of the off-state power-taking control circuit 1 is connected to the energy storage element C1. The off-state power-taking control circuit 1 is used for controlling the voltage stability of the energy storage element C1 to provide stable power supply voltage for the control chip. Here, the off-state power-taking control circuit is a conventional circuit structure, and is composed of a comparator, an error amplifier, a switching tube and other devices.

Each single-live-wire switch circuit further comprises a driving circuit and a control chip, such as the driving 1 and the control chip 1 in fig. 1, wherein the energy storage element C1 provides an operating voltage for the control chip, and the control chip generates a switch control signal and transmits the switch control signal to the driving circuit to control the switching state of the first switch unit. Here, the control chip may include a single chip microcomputer, a wireless control chip, an MCU, or the like.

In an example, the single-live-wire switch circuit further includes a switch panel, the switch panel may be fixed on a panel of the switch circuit or may be a wireless control panel, a panel indication identifier corresponding to the first switch unit is disposed on the switch panel, the indication identifier is in communication connection with the control chip, and a user controls the load to be turned on or off through the indication identifier. Here, the panel indication mark may be a key, a touch button, a wireless key, a wireless touch button, or the like.

According to the switch circuit structure, the basic principle of controlling the load and getting the electricity of the invention is as follows: the active connection terminal of the first switch unit in the panel 1 is connected to either the channel 1 (recorded as S11 conduction) or the channel 2 (recorded as S12 conduction), the active connection terminal of the first switch unit in the panel 2 is connected to either the channel 1 (recorded as S21 conduction) or the channel 2 (recorded as S22 conduction), and the power-on and power-off conditions in four cases are analyzed as follows: when S11 in the panel 1 is turned on, if S21 in the panel 2 is turned on, the load is turned on, both the panel 1 and the panel 2 take power through the on-state power taking circuit, if S22 in the panel 2 is turned on, the load is turned off, both the panel 1 and the panel 2 take power through the off-state power taking circuit, if the switch Q21 in the panel 2 is turned on in the positive half period of the ac input power, and the panel 2 takes power through the path formed by the body diode of the switch Q11 in the panel 1 and the switch Q21 in the panel 2; in the negative half period of the alternating current input power, the switch Q11 in the panel 1 is conducted, and the panel 1 draws power through a path formed by a body diode of the switch Q21 in the panel 2 and the switch Q11 in the panel 1; then, the energy storage elements C1 and C2 are charged by single live wire power to be supplied to the control chip or driving circuit in the panel. When S12 of the panel 1 is turned on, if S21 of the panel 2 is turned on, the load is turned off, and both the panel 1 and the panel 2 take power through the off-state power-taking circuit, and if S22 of the panel 2 is turned on, the load is turned on, and both the panel 1 and the panel 2 take power through the on-state power-taking circuit. Similarly, under the condition that S21 or S22 in the panel 2 is turned on, the panel 1 and the panel 2 can independently take electricity through the on-state electricity-taking circuit or the off-state electricity-taking circuit, so that the panel 1 and the panel 2 can independently take electricity to control, and the switch panels at different places can independently control the on and off of the lamp loads. The single live wire switch circuit realizes the transformation and optimization of an intelligent switch under the condition of not changing the original single live wire circuit structure, and is effectively applied to intelligent household occasions.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.