CN106249631A - A kind of double control switch based on single live wire switch - Google Patents

Abstract

The invention discloses a kind of double control switch based on single live wire switch, switch including Liang Zu bis-road list live wire, two road list live wire switches include power-supply circuit, energy storage device, relay and radio control circuit；Power-supply circuit is used for after the normal work of switch, and power taking from electrical network is stored in energy storage device, is powered to radio control circuit；Power-supply circuit includes ON state power-supply circuit and OFF state power-supply circuit；Radio control circuit, it is electrically connected with energy storage device and relay, receives the control instruction signal of wireless unlatching/closedown load that the external world sends, and exports the command signal that corresponding relay opens/cuts out；Avoid with occur during single live wire switch transformation double control switch cannot the situation of power taking.

Description

A kind of double control switch based on single fire wire switch

technical field

The invention belongs to the field of a wireless intelligent single live wire switch, and relates to a technology for transforming a traditional double control switch by using a single live wire switch, in particular to a double control switch based on a single live wire switch.

Background technique

With the popularity of smart homes, we have encountered many scenarios where specific devices are modified. For example, the traditional dual-control switch is transformed with a smart switch. The working principle of the traditional double-control switch is to use two single-pole double-throw switches in series to achieve the effect that both switches can control the on-off of electrical appliances. Moreover, there is no neutral wire in the cassette of the double control switch, so on the premise of avoiding rewiring, only a single live wire switch can be used for transformation. The present invention proposes a technical solution for this situation.

The traditional double control switch is connected in series in the circuit. If the single live wire switch is used for direct transformation, when the relays of the two switches are all disconnected, the single live wire switch will not get power.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a dual-control switch based on a single live wire switch, which avoids the situation that power cannot be obtained during the transformation of a double control switch with a single live wire switch.

The traditional double control switch is connected in series in the circuit. If the single live wire switch is used for direct transformation, when the relays of the two switches are all disconnected, the single live wire switch will not get power. In order to solve the above technical problems, the present invention provides a dual control switch based on a single live wire switch. The dual control switch includes two sets of two single live wire switches, and the two single live wire switches include power-taking circuits, energy storage devices, relays and wireless control circuit; the power taking circuit is used to take power from the grid after the switch works normally, store it in the energy storage device, and supply power to the wireless control circuit; the power taking circuit includes an open state power taking circuit and an off state power taking circuit; In the off-state power-taking circuit, its input end is electrically connected to the output end of the relay, and the working current of the load is used to obtain electric energy; in the off-state power-taking circuit, its input end is electrically connected to the load, and its output end is electrically connected to the wireless control circuit. The alternating current is converted into low-voltage direct current and output to the wireless control circuit; the wireless control circuit is electrically connected with the energy storage device and the relay, receives the control command signal of the wireless on/off load sent from the outside, and outputs the corresponding relay on/off command signal.

The technical scheme further defined in the present invention is:

Two groups of two-way single live wire switches include two-way single live wire switch 1 and two-way single live wire switch 2, and two-way single live wire switch 1 includes two relays 1 and 2, power-taking circuit 1 in open state, energy storage device 1, and Power-taking circuit 1 and wireless control circuit 1, two-way single live wire switch 2 includes two relays 3 and 4, open-state power-taking circuit 2, energy storage device 2, off-state power-taking circuit 2 and wireless control circuit 2.

The live wire contacts of relay 1 and relay 2 are connected to the open-state power-taking circuit 1, the control coils of relay 1 and relay 2 are connected to the wireless control circuit 1, and the open-state power-taking circuit 1 is connected in series with the energy storage device 1 and the wireless control circuit 1, The energy storage device 1 is connected to the off-state power-taking circuit 1, and the off-state power-taking circuit 1 is respectively connected to the load terminal A1 of the relay 1 and the load terminal B1 of the relay 2; the live wire contacts of the relay 3 and the relay 4 are connected to the open-state power-taking circuit 2. The control coils of relay 3 and relay 4 are connected to the wireless control circuit 2, and the power-taking circuit 2 in the open state is connected in series with the energy storage device 2 and the wireless control circuit 2 in sequence. Circuit 2 is respectively connected to load terminal A2 of relay 3 and load terminal B2 of relay 4; load terminal A1 is connected to load terminal A2, load terminal B1 is connected to load terminal B2; The live wire terminal L2 of the electric circuit 2 is connected to the load, and is connected to the neutral wire through the load to form a loop.

Preferably, the aforementioned relays must be normally closed relays.

further,

The present invention also provides a control method for a dual control switch based on a single live wire switch, comprising the following specific steps:

After power on, the 4 relays of the two groups of two-way single live wire switches are all in the closed state. At this time, the load is working, and the two groups of two-way single live wire switches are all in the open working mode. The system has power and can work normally; the wireless control circuit Start to work, when it is reset, automatically disconnect relay 1 and relay 3 at the same time, at this time, because relay 2 and relay 4 are still closed, the system is still in the open working state, and the load is working at this time; two-way single live wire switch 1 and The two-way single live wire switch 2 interacts with the user through external buttons, and the button signal is transmitted to the wireless control circuit 1 or 2, and the wireless control circuit 1 or 2 controls the on-off of the 4 relays inside the dual-control switch, and the wireless control circuit 1 Or 2 After receiving an external command, always close one relay first, and then disconnect the other relay to ensure that at least one relay is closed at any time of the two-way single-line switch 1 or 2; the user operates the two-way single-line switch 1 , then the wireless control circuit 1 closes the relay 1 and disconnects the relay 2. At this time, the relay 3 is disconnected, and the closed state of the relay 4 remains unchanged. , the load stops working at this time; the user operates the two-way single live wire switch 2, the wireless control circuit 2 will close the relay 3, and the relay 4 will be disconnected. In the open working mode, the load works normally; if the user keeps operating the two-way single live wire switch 1 or 2, the state of the two relays inside the two-way single live wire switch 1 or 2 is always switching, and the power-taking mode of the system is in the open state. It can be switched between power-on and off-state, and it can work normally.

The beneficial effects of the present invention are:

The dual control switch designed by the present invention does not need to be rewired, just connect the intelligent single live wire switch to the position of the dual control switch according to the requirements, saving time and effort; this product transforms the traditional dual control by using an ordinary single live wire switch with an intelligent switch The switch enables users to control the switch remotely or locally, which reduces the cost of smart home equipment transformation and promotes the application and promotion of smart home.

Description of drawings

Fig. 1 is the circuit schematic diagram of the present invention.

detailed description

Example 1

This embodiment provides a dual control switch based on a single live wire switch. The structure is shown in Figure 1. The present invention provides a dual control switch based on a single live wire switch. The single live wire switch includes power-taking circuit, energy storage device, relay and wireless control circuit; The electric circuit includes an open-state power-taking circuit and an off-state power-taking circuit; the open-state power-taking circuit, whose input end is electrically connected to the output end of the relay, and uses the working current of the load to obtain electric energy; the off-state power-taking circuit, whose input terminal is electrically The output end is electrically connected to the wireless control circuit, and the received AC power is converted into a low-voltage DC output to the wireless control circuit; the wireless control circuit is electrically connected to the energy storage device and the relay, and receives the wireless start signal sent by the outside world. /Close the control command signal of the load, and output the command signal corresponding to the opening/closing of the relay.

Two groups of two-way single live wire switches include two-way single live wire switch 1 and two-way single live wire switch 2, and two-way single live wire switch 1 includes two relays 1 and 2, power-taking circuit 1 in open state, energy storage device 1, and Power-taking circuit 1 and wireless control circuit 1, two-way single live wire switch 2 includes two relays 3 and 4, open-state power-taking circuit 2, energy storage device 2, off-state power-taking circuit 2 and wireless control circuit 2.

The live wire contacts of relay 1 and relay 2 are connected to the open-state power-taking circuit 1, the control coils of relay 1 and relay 2 are connected to the wireless control circuit 1, and the open-state power-taking circuit 1 is connected in series with the energy storage device 1 and the wireless control circuit 1, The energy storage device 1 is connected to the off-state power-taking circuit 1, and the off-state power-taking circuit 1 is respectively connected to the load terminal A1 of the relay 1 and the load terminal B1 of the relay 2; the live wire contacts of the relay 3 and the relay 4 are connected to the open-state power-taking circuit 2. The control coils of relay 3 and relay 4 are connected to the wireless control circuit 2, and the power-taking circuit 2 in the open state is connected in series with the energy storage device 2 and the wireless control circuit 2 in sequence. Circuit 2 is respectively connected to load terminal A2 of relay 3 and load terminal B2 of relay 4; load terminal A1 is connected to load terminal A2, load terminal B1 is connected to load terminal B2; The live wire terminal L2 of the electric circuit 2 is connected to the load, and is connected to the neutral wire through the load to form a loop.

The aforementioned relays shall be normally closed relays.

This embodiment also provides a control method for a dual control switch based on a single live wire switch, including the following specific steps:

After power on, the 4 relays of the two groups of two-way single live wire switches are all in the closed state. At this time, the load is working, and the two groups of two-way single live wire switches are all in the open working mode. The system has power and can work normally; the wireless control circuit Start to work, when it is reset, automatically disconnect relay 1 and relay 3 at the same time, at this time, because relay 2 and relay 4 are still closed, the system is still in the open working state, and the load is working at this time; two-way single live wire switch 1 and The two-way single live wire switch 2 interacts with the user through external buttons, and the button signal is transmitted to the wireless control circuit 1 or 2, and the wireless control circuit 1 or 2 controls the on-off of the 4 relays inside the dual-control switch, and the wireless control circuit 1 Or 2 After receiving an external command, always close one relay first, and then disconnect the other relay to ensure that at least one relay is closed at any time of the two-way single-line switch 1 or 2; the user operates the two-way single-line switch 1 , then the wireless control circuit 1 closes the relay 1 and disconnects the relay 2. At this time, the relay 3 is disconnected, and the closed state of the relay 4 remains unchanged. , the load stops working at this time; the user operates the two-way single live wire switch 2, the wireless control circuit 2 will close the relay 3, and the relay 4 will be disconnected. In the open working mode, the load works normally; if the user keeps operating the two-way single live wire switch 1 or 2, the state of the two relays inside the two-way single live wire switch 1 or 2 is always switching, and the power-taking mode of the system is in the open state. It can work normally by switching between power-on and off-state power.

The above embodiments are only to illustrate the technical ideas of the present invention, and can not limit the protection scope of the present invention with this. All technical ideas proposed in accordance with the present invention, any changes made on the basis of technical solutions, all fall within the protection scope of the present invention. Inside.

Claims (5)

1. A double control switch based on a single live wire switch, characterized in that: the double control switch includes two groups of two-way single live wire switches, and the two-way single live wire switch includes a power-taking circuit, an energy storage device, a relay and a wireless Control circuit; The power taking circuit is used to take power from the grid after the switch works normally, store it in the energy storage device, and supply power to the wireless control circuit; The power-taking circuit includes an on-state power-taking circuit and an off-state power-taking circuit; In the open-state power-taking circuit, its input terminal is electrically connected to the output terminal of the relay, and the working current of the load is used to obtain electric energy; The off-state power-taking circuit has its input terminal electrically connected to the load, and its output terminal electrically connected to the wireless control circuit, and converts the received AC power into low-voltage DC power and outputs it to the wireless control circuit; The wireless control circuit is electrically connected with the energy storage device and the relay, receives the control instruction signal of wirelessly turning on/off the load sent from the outside, and outputs the instruction signal corresponding to turning on/off the relay. 2. The dual control switch based on a single live wire switch according to claim 1, characterized in that: the two groups of two single live wire switches include two single live wire switches 1 and two single live wire switches 2, and the two The single live wire switch 1 includes two relays 1 and 2, an on-state power-taking circuit 1, an energy storage device 1, an off-state power-taking circuit 1 and a wireless control circuit 1, and the two-way single live wire switch 2 includes two relays 3 and 4, On-state power-taking circuit 2 , energy storage device 2 , off-state power-taking circuit 2 and wireless control circuit 2 . 3. The double control switch based on the single live wire switch according to claim 2, characterized in that: The live end contacts of the relay 1 and the relay 2 are connected to the open-state power-taking circuit 1, the control coils of the relay 1 and the relay 2 are connected to the wireless control circuit 1, and the open-state power-taking circuit 1 is connected in series with the energy storage device 1 and the wireless A control circuit 1, the energy storage device 1 is connected to an off-state power-taking circuit 1, and the off-state power-taking circuit 1 is respectively connected to the load terminal A1 of the relay 1 and the load terminal B1 of the relay 2; The live wire end contacts of the relay 3 and the relay 4 are connected to the open-state power-taking circuit 2, the control coils of the relay 3 and the relay 4 are connected to the wireless control circuit 2, and the open-state power-taking circuit 2 is connected in series with the energy storage device 2 and the wireless control circuit 2 in sequence. The control circuit 2, the energy storage device 2 is connected to the off-state power-taking circuit 2, and the off-state power-taking circuit 2 is respectively connected to the load terminal A2 of the relay 3 and the load terminal B2 of the relay 4; The load terminal A1 is connected to the load terminal A2, and the load terminal B1 is connected to the load terminal B2; The live wire end L1 of the on-state power fetching circuit 1 is connected to the live wire, and the live wire end L2 of the on-state power fetching circuit 2 is connected to the load, and is connected to the neutral wire through the load to form a loop. 4. The dual control switch based on a single live wire switch according to claim 1, wherein the relay must be a normally closed relay. 5. The method for controlling a dual-control switch based on a single live wire switch according to any one of claims 1-4, characterized in that it comprises the following specific steps: After power-on, the 4 relays of the two groups of two-way single live wire switches are all in the closed state. At this time, the load is working, and the two groups of two-way single live wire switches are all in the open working mode, and the system has power and can work normally; The wireless control circuit starts to work. When it is reset, it automatically disconnects relay 1 and relay 3 at the same time. At this time, since relay 2 and relay 4 are still closed, the system is still in the open working state, and the load is working at this time; The two-way single live wire switch 1 and the two-way single live wire switch 2 interact with the user through external buttons, and the button signals are transmitted to the wireless control circuit 1 or 2, and the wireless control circuit 1 or 2 then controls the communication of the four relays inside the double control switch. When the wireless control circuit 1 or 2 receives an external command, it always closes one relay first, and then disconnects the other relay, so as to ensure that at least one relay of the two-way single live wire switch 1 or 2 is closed at any time; When the user operates the two-way single live wire switch 1, the wireless control circuit 1 will close the relay 1, and the relay 2 will be disconnected. At this time, the relay 3 will be disconnected, and the closed state of the relay 4 will remain unchanged. 2 are switched to the off-state working mode, and the load stops working at this time; When the user operates the two-way single live wire switch 2, the wireless control circuit 2 will close the relay 3, and the relay 4 will be disconnected. At this time, the relay 1 is closed, and the disconnected state of the relay 2 remains unchanged. At this time, the system switches to the open working mode, and the load is normal. Work; If the user keeps operating the two-way single live wire switch 1 or 2, the state of the two relays inside the two-way single live wire switch 1 or 2 is always switching, and the power-taking mode of the system is switched between the power-on state and the power-off state , which works fine.