CN212570779U - Multi-control switch and switch device - Google Patents
Multi-control switch and switch device Download PDFInfo
- Publication number
- CN212570779U CN212570779U CN202020901104.0U CN202020901104U CN212570779U CN 212570779 U CN212570779 U CN 212570779U CN 202020901104 U CN202020901104 U CN 202020901104U CN 212570779 U CN212570779 U CN 212570779U
- Authority
- CN
- China
- Prior art keywords
- switch
- processor
- state
- key
- synchronization signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The application discloses many accuse switch and switching device, this many accuse switch includes: the first switch is connected with the external equipment and comprises a first processor, a switch element and a first key, and the first processor is connected with the switch element and the first key; the second switches are connected with the first switches, each second switch comprises a second processor and a second key which are connected with each other, and the second processors are used for generating state synchronizing signals and sending the state synchronizing signals when the second keys are operated; the first processor is used for adjusting the connection state between the switch element and the external equipment when the first key is operated or receives the state synchronization signal, so that the passage between the switch element and the external equipment is switched on/off. Through the mode, the on-off control of the external equipment can be realized by utilizing one switch element, wiring can be simplified, and cost is reduced.
Description
Technical Field
The application relates to the technical field of circuits, in particular to a multi-control switch and a switching device.
Background
At present, the on-off of the same circuit can be controlled by utilizing a multi-control switch, for example, the same lamp is controlled by utilizing a plurality of switches, the traditional multi-control switch can be realized by a physical wiring mode, the circuit needs to be designed in a complex way, and the wiring is extremely complex when the number of the switches is large; for the conventional multi-control switch, each switch device needs to be capable of physically controlling the on/off of the circuit, so that a switch element needs to be equipped, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The application provides a multi-control switch and a switch device, which can realize on-off control of external equipment by using one switch element, simplify wiring and reduce cost.
In order to solve the above technical problem, the technical scheme adopted by the present application is to provide a multi-control switch, which includes: the first switch is connected with the external equipment and comprises a first processor, a switch element and a first key, and the first processor is connected with the switch element and the first key; the second switches are connected with the first switches, each second switch comprises a second processor and a second key which are connected with each other, and the second processors are used for generating state synchronizing signals and sending the state synchronizing signals when the second keys are operated; the first processor is used for adjusting the connection state between the switch element and the external equipment when the first key is operated or receives the state synchronization signal, so that the passage between the switch element and the external equipment is switched on/off.
In order to solve the above technical problem, another technical solution adopted in the present application is to provide a switch device, where the switch device includes a power supply, a multi-control switch, and a load, which are connected in sequence, the power supply is configured to supply power to the load through the multi-control switch, the multi-control switch is the above multi-control switch, and the load is the above external device.
Through the scheme, the beneficial effects of the application are that: the multi-control switch comprises a first switch and at least one second switch, and when a second key is operated, the second processor can generate a state synchronization signal and send the state synchronization signal to other switches; when the first processor detects that the first key is operated or receives the state synchronizing signal, the connection state between the switch element and the external equipment can be adjusted, so that the switch element and the external equipment are connected/disconnected, and the external equipment is controlled.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural diagram of an embodiment of a multi-control switch provided in the present application;
FIG. 2 is a schematic diagram of the connection of the multi-control switch to the lamp in the illustrated embodiment of FIG. 1;
FIG. 3 is a schematic structural diagram of another embodiment of a multi-control switch provided in the present application;
fig. 4 is a schematic structural diagram of an embodiment of a switching device provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a multi-control switch provided in the present application, and the multi-control switch 10 includes: a first switch 11 and at least one second switch 12.
Each of the second switches 12 is connected to the first switch 11, and includes a second processor 121 and a second key 122 connected to each other, the second processor 121 is configured to generate a state synchronization signal and transmit the state synchronization signal when the second key 122 is operated; specifically, the state synchronization signal includes information that the switch state is on or off, and the second button 122 can be pressed or bounced under the operation of the user; the second switch 12 may be a wireless switch, and the second processor 121 may monitor a state of the second key 122, generate a state synchronization signal when it is monitored that the second key 122 is operated, and transmit the state synchronization signal to other switches (including the first switch 11 and other second switches); when the number of the second switches 12 is 1, the multi-control switch 10 is a double-control switch.
The first switch 11 is connected to an external device 20, the first switch 11 may be a wireless switch, and the external device 20 may be a device that needs to be controlled by a switch, such as a lamp or a fan; specifically, the first switch 11 includes a first processor 111, a switch element 112 and a first button 113, and the first processor 111 is connected to the switch element 112 and the first button 113.
The first processor 111 is configured to adjust a connection state between the switching element 112 and the external device 20 to turn on/off a path between the switching element 112 and the external device 20 when the first key 113 is operated or receives a state synchronization signal transmitted from the second switch 12.
Further, the first processor 111 may monitor a state of the first key 113, and when it is monitored that the first key 113 is pressed, send a high-level control signal to the switching element 112, so that the switching element 112 is turned on, a path between the first switch 11 and the external device 20 is turned on, and the external device 20 is in an operating state; when the first processor 111 monitors that the first button 113 bounces, a low-level control signal is sent to the switching element 112, so that the switching element 112 is turned off, and a path between the first switch 11 and the external device 20 is disconnected, and at this time, the external device 20 is in a non-operating state; when the first processor 111 detects that the first button 113 is not operated and does not receive the state synchronization signal, the state of the switching element 112 remains unchanged.
When the first key 113 is not operated but the second key 122 is operated, the first processor 111 may receive the state synchronization signal transmitted from the second processor 121 and may control the switching element 112 to be turned on/off according to the state synchronization signal, thereby turning on/off the path between the first switch 11 and the external device 20.
In a specific embodiment, the external device 20 is a lamp, the number of the first switches 12 is 3, and is denoted as 12a-12c, and the first switch 11 and the second switches 12a-12c can be strong switches, and are directly connected to the mains, i.e. as shown in fig. 2, the first switch 11 is connected to the live line L and one end of the lamp, the other end of the lamp is connected to the neutral line N, and the second switches 12a-12c are both connected to the live line L and the neutral line N; the first switch 11 is provided with a switching element 112, and the switching element 112 can physically control the on/off of a line on which the lamp is located.
The first switch 11 and the second switches 12a-12c form a network, when a user operates any one of the four switches to change the switch state, the operated switch can generate a state synchronization signal and send the state synchronization signal to other switches, the state synchronization signal can carry the switch state at the moment, the first switch 11 can directly control the lamp, and the second switch 12 can indirectly control the lamp through the first switch 11, so that each switch can control the lamp.
It will be appreciated that the state synchronizing signal may be low to indicate that the switch is in the on state and high to indicate that the switch is in the off state.
The embodiment provides an implementation scheme of a multi-control switch 10, which can be applied to the fields of smart homes, internet of things or electricians, only one switch with a switch element 112 is needed in the whole circuit to actually control the on-off of the circuit, all other switches do not need to be configured with the switch element 112, not only can the on-off of one circuit be controlled by a plurality of switches, but also the number of the switch elements 112 can be reduced, the wiring process is simplified, and the wiring cost and the cost of the equipment can be saved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of a multi-control switch provided in the present application, the multi-control switch includes: a first switch 11 and at least one second switch 12.
The communication protocol between the first switch 11/the second switch 12 and the other switches may be a wireless communication protocol, for example, a ZigBee (ZigBee) protocol or a bluetooth protocol, that is, the first switch 11 and all the second switches 12 may be in one wireless communication network, and after the switch state of a certain switch changes, the switch may send a state synchronization signal to other switches in the wireless communication network in a broadcast manner through the wireless communication network, so that the other switches may acquire the switch state; or the first switch 11 and all the second switches 12 may be in the same wireless communication network and in the same group, and after the switch state of a certain switch changes, the switch may notify other switches in the same group in a multicast manner through the wireless communication network.
The first switch 11 includes: the first processor 111, the switch element 112, the first button 113, the first power supply circuit 114, the first button detection circuit 115, the first rf transceiver circuit 116, and the first status indicator 117.
The first power supply circuit 114 is connected to the first processor 111, the neutral line and the live line (not shown in the figure), and is used for supplying power to the first processor 111; specifically, the first power supply circuit 114 may be an ac-to-dc circuit to provide a stable dc voltage to the first processor 111.
The first key detection circuit 115 is connected to the first processor 111 and the first key 113, and is configured to detect whether the first key 113 is operated, and send an on/off state of the first key 113 to the first processor 111; specifically, the switch state includes on or off, and the first key detection circuit 115 may send a signal containing the switch state as on to the first processor 111 when detecting that the first key 113 is pressed; the first key detection circuit 115 may send a signal including an off state to the first processor 111 when detecting that the first key 113 bounces; when the first key 113 is not operated, the first key detection circuit 115 maintains the output.
The first processor 111 is configured to control the switching element 112 to be turned on/off and generate a corresponding state synchronization signal when the first key 113 is operated, and then broadcast the state synchronization signal so that each second switch 12 receives the state synchronization signal; specifically, the first processor 111 broadcasts its own switch state, so that each second switch 12 acquires the switch state of the first switch 11, so as to adjust its own switch state, and ensure that the switch states of all switches are consistent.
Further, the switching element 112 includes a relay or a magnetic holding device for turning on/off under the control of the first processor 111; specifically, when the first processor 111 detects that the first key 113 is pressed or receives a state synchronization signal containing a switch state as on, a high-level control signal may be generated and sent to the relay/magnetic latching device, so that the relay/magnetic latching device is turned on; when the first processor 111 detects that the first key 113 bounces or receives a state synchronization signal containing that the switch state is off, a control signal with a low level can be generated and sent to the relay/magnetic holding device, so that the relay/magnetic holding device is turned off; when the first processor 111 detects that the first button 113 is not operated and does not receive the state synchronization signal, the output signal is maintained unchanged, so that the state of the relay/magnetic holding device is kept unchanged.
The first processor 111 is further configured to control the switching element 112 to be turned on/off after receiving the state synchronization signal, so that a path between the switching element 112 and the external device 20 is turned on/off; specifically, when the first processor 111 receives the state synchronization signal of the high level, the switching element 112 may be controlled to be turned on, so that the path between the switching element 112 and the external device 20 is turned on; when the first processor 111 receives the state synchronization signal of the low level, the switching element 112 may be controlled to be turned off, so that the path between the switching element 112 and the external device 20 is opened.
The first radio frequency transceiver circuit 116 is connected to the first processor 111, and is configured to receive the state synchronization signal sent by the second processor 121, or broadcast when the first processor 111 generates the state synchronization signal; specifically, when the second key 122 is operated, the second processor 121 may generate a corresponding state synchronization signal and broadcast the state synchronization signal, so that the first rf transceiver circuit 116 receives the state synchronization signal; when the first key 113 is operated, the first processor 111 may generate a state synchronization signal itself and broadcast the state synchronization signal through the first rf transceiver circuit 116.
The first status indicator 117 is connected to the first processor 111, and the first processor 111 may generate a corresponding switch status signal according to the switch status of the first button 113 and send the switch status signal to the first status indicator 117 to control the first status indicator 117 to turn on or turn off; specifically, when the first key 113 is pressed or receives a high-level state synchronization signal, the first processor 111 may generate a high-level switch state signal and input the high-level switch state signal to the first state indicator lamp 117, so that the first state indicator lamp 117 emits light to indicate that the current switch state is on; when the first button 113 bounces or receives a low-level state synchronization signal, the first processor 111 may generate a low-level switch state signal and input the low-level switch state signal to the first state indicator lamp 117, so that the first state indicator lamp 117 is turned off to indicate that the current switch state is off; when the first button 113 is not operated or receives no state synchronization signal, the signal output by the first processor 111 is not changed, and the on/off state of the first status indicator lamp 117 is not changed.
The second switch 12 includes: the second processor 121, the second button 122, the second power supply circuit 123, the second button detection circuit 124, the second rf transceiver circuit 125, and the second status indicator 126.
The second power supply circuit 123 is connected to the second processor 121, the neutral line and the live line, and is configured to supply power to the second processor 121; specifically, the second power supply circuit 123 may be an ac-to-dc circuit to provide a stable dc voltage to the second processor 121.
The second key detection circuit 124 is connected to the second processor 121 and the second key 122, and is configured to detect whether the second key 122 is operated, and send the on-off state of the second key 122 to the second processor 121; specifically, the second key detection circuit 124 may send a signal to the second processor 121 when detecting that the second key 122 is pressed, the signal including the switch state is on; the second key detection circuit 124 can send a signal containing the off state of the switch to the second processor 121 when detecting that the second key 122 is flipped; when the second key 122 is not operated, the second key detection circuit 124 keeps the output unchanged.
The second processor 121 is configured to receive a state synchronization signal sent by another switch (including the first processor 111 or another second switch), adjust the on/off state of the second key 122 according to the state synchronization signal, and broadcast the on/off state of the second key 122.
The second rf transceiver circuit 125 is connected to the second processor 121, and is configured to receive the state synchronization signal sent by another switch, or broadcast when the second processor 121 generates the state synchronization signal; specifically, the second rf transceiver circuit 125 performs wireless communication with the first rf transceiver circuit 116, and when the second key 122 of the second processor is operated, the second processor 121 may generate a corresponding state synchronization signal and perform broadcasting; when the other second switches are operated, the second rf transceiver circuit 125 may receive the status synchronization signal broadcast by the other second switches; when the first button 113 is operated, the second rf transceiver circuit 125 can receive the status synchronization signal broadcast by the first rf transceiver circuit 116.
The second status indicator 126 is connected to the second processor 121, and the second processor 121 may generate a corresponding switch status signal according to the switch status of the second key 122, and send the switch status signal to the second status indicator 126 to control the second status indicator 126 to turn on or turn off; specifically, when the second key 122 is pressed or receives a high-level state synchronization signal, the second processor 121 may generate a high-level switch state signal and input the high-level switch state signal to the second state indicator lamp 126, so that the second state indicator lamp 126 emits light to indicate that the current switch state is on; when the second button 122 bounces or receives a low-level state synchronization signal, the second processor 121 may generate a low-level switch state signal, and input the low-level switch state signal to the second state indicator 126, so that the second state indicator 126 goes out to indicate that the current switch state is off; when the second key 122 is not operated or the status synchronization signal is not received, the signal output by the second processor 121 is not changed, and the on/off status of the second status indicator light 126 is not changed.
In a specific embodiment, taking a multi-control switch as a zigbee wireless switch as an example, a zigbee wireless switch (i.e. the first switch 11) capable of controlling the on/off of the line is arranged in the circuit, the first switch 11 is provided with a key, the physical on/off of the line can be controlled by pressing the key, and the first switch 11 can receive the state synchronization signal and switch to a corresponding state.
Other zigbee wireless switches (i.e. the second switch 12) do not need to be configured with devices such as a relay or a magnetic keeper, but only need to be configured with a key, and when a user presses the key on the other zigbee wireless switch or receives a state synchronization signal sent by the other switch, the switch state of the user can be updated and broadcast.
All zigbee wireless switches form a network, when the state of any one switch in the network changes, the switch generates a state synchronization signal and broadcasts the state synchronization signal, so that other switches are synchronized in state, only one switch with a relay or a magnetic keeper in the whole circuit is physically connected with the external device 20, and other switches exist as multi-control devices.
It should be understood that the communication protocol in this embodiment is not limited to zigbee, but may also be other wireless communication modes; and not limited to the local area network, but also may be an internet network, that is, the first switch 11 and the second switch 12 may be devices with internet connection capability, so as to implement remote multi-control.
In another embodiment, the first switch 11 and the second switch 12 can also be powered by a battery, that is, the first switch 11 is respectively connected with the positive pole of the battery and one end of the external device 20, the other end of the external device 20 is connected with the negative pole of the battery, and the second switch 12 is respectively connected with the positive pole of the battery and the negative pole of the battery, which does not affect the function and can save the wiring cost.
In other embodiments, the first power supply circuit 114 and the second power supply circuit 123 may also be the same power supply circuit, and can respectively provide corresponding power supply voltages to the first processor 111 and the second processor 121.
The on-off of the circuit is actually controlled by only one switch with the relay or the magnetic holding device in the whole circuit of the multi-control switch provided by the embodiment, the relay or the magnetic holding device is not needed to be arranged on other switches, the wiring and equipment cost is saved, the states of all the switches can be kept synchronous, and the on-off of the external equipment 20 is controlled by the switches.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of a switching device provided in the present application, where the switching device 40 includes: a power source 41, a multi-control switch 42 and a load 43 connected in sequence, wherein the power source 41 is used for supplying power to the load 43 through the multi-control switch 42, the multi-control switch 42 is the multi-control switch in the above embodiment, and the load 43 is an external device in the above embodiment.
In the embodiment, the switch device 40 includes the multi-control switch 42, one switch equipped with a switch element can be used to control the on/off of the load 43, and other switches are not equipped with a switch element, so that the number of switch elements used can be reduced, the cost of wiring and equipment itself can be saved, and the states of all switches can be kept synchronous, and the consistency is good.
The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.
Claims (10)
1. A multi-control switch, comprising:
the first switch is connected with external equipment, the first switch comprises a first processor, a switch element and a first key, and the first processor is connected with the switch element and the first key;
at least one second switch connected to the first switch, each second switch including a second processor and a second key connected to each other, the second processor being configured to generate a state synchronization signal and transmit the state synchronization signal when the second key is operated;
the first processor is configured to adjust a connection state between the switching element and the external device when the first key is operated or the state synchronization signal is received, so that a path between the switching element and the external device is turned on/off.
2. Multi-control switch according to claim 1,
the first processor is further configured to control the switch element to be turned on/off when the first key is operated, generate the state synchronization signal, and broadcast the state synchronization signal, so that each of the second switches receives the state synchronization signal.
3. Multi-control switch according to claim 1,
the first processor is further configured to control the switching element to be turned on/off after receiving the state synchronization signal, so that a path between the switching element and the external device is turned on/off.
4. Multi-control switch according to claim 1,
the second processor is further configured to receive a state synchronization signal sent by another switch, adjust the on-off state of the second key according to the state synchronization signal, and broadcast the on-off state of the second key.
5. The multi-control switch of claim 1, wherein the first switch further comprises:
the first radio frequency transceiver circuit is connected with the first processor and is used for receiving the state synchronization signal sent by the second processor or broadcasting when the first processor generates the state synchronization signal;
the first power supply circuit is connected with the first processor, the zero line and the live wire and used for supplying power to the first processor;
and the first key detection circuit is connected with the first processor and the first key and used for detecting whether the first key is operated or not and sending the on-off state of the first key to the first processor.
6. Multi-control switch according to claim 5,
the first switch further comprises a first status indicator light, the first status indicator light is connected with the first processor, and the first processor is further used for generating a corresponding switch status signal according to the switch status of the first key and sending the switch status signal to the first status indicator light so as to control the first status indicator light to be turned on or turned off.
7. The multi-control switch of claim 5, wherein the second switch further comprises:
the second radio frequency transceiver circuit is connected with the second processor and is used for receiving state synchronization signals sent by other switches or broadcasting when the second processor generates the state synchronization signals, wherein the second radio frequency transceiver circuit is in wireless communication with the first radio frequency transceiver circuit;
the second power supply circuit is connected with the second processor, the zero line and the live wire and used for supplying power to the second processor;
and the second key detection circuit is connected with the second processor and the second key and used for detecting whether the second key is operated or not and sending the on-off state of the second key to the second processor.
8. Multi-control switch according to claim 7,
the second switch further comprises a second state indicator light, the second state indicator light is connected with the second processor, and the second processor is further used for generating a corresponding switch state signal according to the switch state of the second key and sending the switch state signal to the second state indicator light so as to control the second state indicator light to be turned on or turned off.
9. Multi-control switch according to claim 1,
the switch element includes a relay or a magnetic holding device for turning on/off under the control of the first processor, and a communication protocol between the first switch/the second switch and other switches is a wireless communication protocol.
10. A switching device, comprising: the power supply is used for supplying power to the load through the multi-control switch, the multi-control switch is the multi-control switch in any one of claims 1-9, and the load is the external device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020901104.0U CN212570779U (en) | 2020-05-25 | 2020-05-25 | Multi-control switch and switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020901104.0U CN212570779U (en) | 2020-05-25 | 2020-05-25 | Multi-control switch and switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212570779U true CN212570779U (en) | 2021-02-19 |
Family
ID=74632405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020901104.0U Active CN212570779U (en) | 2020-05-25 | 2020-05-25 | Multi-control switch and switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212570779U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507401A (en) * | 2021-06-11 | 2021-10-15 | 杭州控客信息技术有限公司 | Linkage switch state synchronization method of multiple control units in whole-house intelligent system |
| TWI783671B (en) * | 2021-09-07 | 2022-11-11 | 歐俈力科技有限公司 | Multi-control switch device and control method thereof |
| WO2024060800A1 (en) * | 2022-09-21 | 2024-03-28 | 武汉领普科技有限公司 | Control system and processing method for intelligent wall switch, and intelligent wall switch |
-
2020
- 2020-05-25 CN CN202020901104.0U patent/CN212570779U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507401A (en) * | 2021-06-11 | 2021-10-15 | 杭州控客信息技术有限公司 | Linkage switch state synchronization method of multiple control units in whole-house intelligent system |
| TWI783671B (en) * | 2021-09-07 | 2022-11-11 | 歐俈力科技有限公司 | Multi-control switch device and control method thereof |
| WO2024060800A1 (en) * | 2022-09-21 | 2024-03-28 | 武汉领普科技有限公司 | Control system and processing method for intelligent wall switch, and intelligent wall switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212570779U (en) | Multi-control switch and switch device | |
| JP4309445B2 (en) | Remote power control system and power strip | |
| CN100454189C (en) | Power saving apparatus | |
| CN111600586A (en) | Single-fire switch double-control system and method | |
| JP2000068922A (en) | Portable terminal equipment | |
| CN101715042B (en) | Digital television terminal and method and device for controlling on and off of power supply of external equipment thereof | |
| CN211321563U (en) | LED driving power supply remote controller based on Bluetooth Mesh technology | |
| KR101096662B1 (en) | A wireless communication network system with function reduce a current consumption and operating method thereof | |
| CN103914002A (en) | Power supply control system | |
| CN112803764A (en) | Radio frequency system, power supply method of radio frequency system and electronic equipment | |
| CN210225433U (en) | Communication switcher and electronic equipment based on power over Ethernet | |
| CN201919011U (en) | Intelligent power control device | |
| CN212811660U (en) | Single-fire switch double-control system | |
| KR101018093B1 (en) | Wireless home network system having fuction of saving electric power | |
| CN212781715U (en) | Intelligent switch of split type structure | |
| CN217426595U (en) | Coaxial switch control device | |
| CN201927849U (en) | Energy-saving wireless remote control connector | |
| CN113676197B (en) | Power supply circuit and wireless transceiver | |
| CN219227581U (en) | Communication system based on low-power wireless power supply | |
| CN216901396U (en) | Robot and remote control system thereof | |
| CN216670921U (en) | Remote control equipment and system | |
| KR20100022295A (en) | Electronic device, electric source synchronization using the same and electric source synchronization system | |
| CN218273951U (en) | Display screen and display system | |
| CN220108214U (en) | Dual-mode communication module and intelligent gas meter | |
| KR20030070381A (en) | Power management methode of wlan card |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |