CN211557585U - Double-control switch and double-control system - Google Patents
Double-control switch and double-control system Download PDFInfo
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- CN211557585U CN211557585U CN201922074626.8U CN201922074626U CN211557585U CN 211557585 U CN211557585 U CN 211557585U CN 201922074626 U CN201922074626 U CN 201922074626U CN 211557585 U CN211557585 U CN 211557585U
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Abstract
The utility model discloses a two accuse switches, two accuse control system, two accuse switches include: the power supply comprises a central control unit, a first switch unit, a first voltage detection unit and a second voltage detection unit; the first switch unit comprises a first output end and a second output end, the central control unit is electrically connected with the first switch unit and is used for controlling the conduction of the first output end or the conduction of the second output end; the first voltage detection unit is electrically connected with the central control unit and the first output end of the first switch unit respectively, and the second voltage detection unit is electrically connected with the central control unit and the second output end of the first switch unit respectively. The state of the light-emitting element is rapidly detected and judged by detecting the level state of the light coupling sensor, and the state of the light-emitting element is rapidly switched by the central control unit, so that the limit of the traditional three-position switch control is broken.
Description
Technical Field
The utility model relates to an intelligence electrical control field especially relates to a two accuse switches and two accuse control system.
Background
The double-control switch is a switch which controls two contacts of normally open and normally closed simultaneously. Usually, two double control switches are used for controlling a lamp or other electric appliances, for example, the double control switches are often used for controlling the lamp, and the two double control switches are used for controlling the lamp, so that the lamp can be controlled in different places, but under the condition that the lamp light cannot be seen, whether the key switch controls the on/off of the lamp light cannot be judged, and even if the lamp light can be remotely controlled, whether the lamp light is turned off cannot be judged.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a dual control switch, which can determine whether light is turned off or not according to the level status of the dual control switch.
In order to achieve the above object, the present invention provides the dual control switch comprising: the power supply comprises a central control unit, a first switch unit, a first voltage detection unit and a second voltage detection unit; the first switch unit comprises a first output end and a second output end, the central control unit is electrically connected with the first switch unit and is used for controlling the conduction of the first output end or the conduction of the second output end; the first voltage detection unit is electrically connected with the central control unit and the first output end of the first switch unit respectively, and the second voltage detection unit is electrically connected with the central control unit and the second output end of the first switch unit respectively.
Further, the dual-control switch further comprises a rectifying unit, and the rectifying unit is electrically connected with the input end of the first switch unit, the first output end of the first switch unit and the second output end of the first switch unit respectively.
Furthermore, the dual-control switch further comprises a voltage reduction unit, the voltage reduction unit is electrically connected with the output end of the rectification unit, and the voltage reduction unit is used for reducing the voltage of the output voltage of the rectification unit.
Further, the first voltage detection unit includes a first photoelectric coupling sensor, a first resistor and a second resistor; the first photoelectric coupling sensor is electrically connected with the central control unit and the first switch unit; the first resistor and the second resistor are electrically connected with the first photoelectric coupling sensor respectively.
Further, the second voltage detection unit includes a second photoelectric coupling sensor, a third resistor and a fourth resistor; the second photoelectric coupling sensor is electrically connected with the central control unit and the first switch unit; and the third resistor and the fourth resistor are respectively and electrically connected with the second photoelectric coupling sensor.
The utility model also provides a two accuse control systems, including above-mentioned arbitrary one two accuse switches.
Further, the double-control system also comprises a light-emitting element, and the light-emitting element is electrically connected with the double-control hole control switch.
Furthermore, the double-control system also comprises a light-emitting element and a second switch unit, and the double-control switch is respectively electrically connected with the second switch unit and the light-emitting element.
Furthermore, the double-control system comprises a light-emitting element and two double-control switches, wherein the two double-control switches are electrically connected, and the light-emitting element is electrically connected with the two double-control switches respectively.
The utility model provides a two accuse control system control method is applied to above-mentioned arbitrary one two accuse control system, the method includes:
receiving a light-emitting element starting instruction;
acquiring a first level signal sent by the first voltage detection unit and a second level signal sent by the second voltage detection unit;
judging whether the light-emitting element is started or not according to the first level signal, the second level signal and a pre-stored potential truth table;
and if the light-emitting element is not started, starting the light-emitting element according to the light-emitting element starting instruction.
The utility model provides a two accuse switches, through detecting optical coupling sensor's level state, short-term test judges light emitting component's state to through well accuse unit fast switch-over light emitting component state, broken traditional tribit on-off control's space-time limit.
Drawings
Fig. 1 is a schematic structural diagram of a dual-control switch according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a part of a dual-control switch according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an embodiment of a dual-control system according to the present invention;
fig. 4 is a schematic circuit diagram of another embodiment of a dual-control system according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a part of another embodiment of the dual-control system according to the present invention;
fig. 6 is a schematic circuit diagram of another part of yet another embodiment of the dual-control system according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of a control method of a dual-control system according to an embodiment of the present invention;
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Please refer to fig. 1, the utility model provides a double control switch, the double control switch includes: a central control unit 10, a first switching unit 20, a first voltage detection unit 30 and a second voltage detection unit 40; the first switch unit comprises a first output end and a second output end, the central control unit 10 is electrically connected with the first switch unit 20, and the central control unit is used for controlling the conduction of the first output end or the conduction of the second output end; the first voltage detection unit 30 is electrically connected to first output terminals of the central control unit 10 and the first switch unit 20, respectively, and the second voltage detection unit 40 is electrically connected to second output terminals of the central control unit 10 and the first switch unit 20, respectively.
In this embodiment, the first switch unit 20 is a single-pole double-throw relay, the output terminal of the single-pole double-throw relay includes a first output terminal OUT1 and a second output terminal OUT2, the input terminal of the single-pole double-throw relay is connected to an external power supply, and one of the first output terminal OUT1 and the second output terminal OUT2 is electrically connected to a controlled object for outputting electric energy. Specifically, the first voltage detection unit 30 is electrically connected to the central control unit 10 and the first output terminal OUT1, and the first voltage detection unit 30 detects the voltage of the first output terminal OUT1 and sends the detected voltage information to the central control module for analysis. The second voltage detection unit 40 is electrically connected to the central control unit 10 and the second output terminal OUT2, and the second voltage detection unit 40 detects the voltage of the second output terminal OUT2 and sends the detected voltage information to the central control module for analysis. The first voltage detection unit 30 and the second voltage detection unit 40 detect the voltages at the two output ends of the first switch unit 20, so that the conductive end of the first switch unit 20 can be judged, and the on-off state of the control object of the dual-control switch can be judged and controlled.
Preferably, the first voltage detecting unit 30 includes a first photo-coupled sensor PC1, a first resistor R1, and a second resistor R2; the first photoelectric coupling sensor PC1 is electrically connected with the central control unit 10 and the first switch unit 20; the first resistor R1 and the second resistor R2 are electrically connected with the first photoelectric coupling sensor PC1 and used for voltage division and shunt.
The second voltage detecting unit 40 includes a second photo-coupled sensor PC2, a third resistor R3, and a fourth resistor R4; the second photoelectric coupling sensor PC2 is electrically connected with the central control unit 10 and the first switch unit 20; the third resistor R3 and the fourth resistor R4 are electrically connected with the second photoelectric coupling sensor PC2 and used for voltage division and shunt.
Specifically, referring to fig. 2, the 4 th pin of the first photoelectric coupled sensor PC1 is electrically connected to the A1B1_ DET pin of the central control unit 10 receiving the detection signal of the first voltage detection unit 30, and the central control unit 10 detects the voltage condition of the first photoelectric coupled sensor PC 1. The 4 th pin is also connected with an input power VCC 3V3, and the 1 st interface and the 2 nd interface of the first photoelectric coupling sensor PC1 are respectively and electrically connected with an A1 interface and an A5 interface of the single-pole double-throw relay RL 1. Specifically, two ends of the first resistor are respectively electrically connected with the 1 st interface and the 2 nd interface of the first photoelectric coupling sensor PC1, and a second resistor R2 is further connected between the 1 st interface of the first photoelectric coupling sensor PC1 and the a1 of the single-pole double-throw relay RL 1. The 4 th pin of the second photoelectric coupling sensor PC2 is electrically connected to the A1C1_ DET pin of the central control unit 10 receiving the detection signal of the second voltage detection unit 40, and the central control unit 10 detects the voltage condition of the second photoelectric coupling sensor PC 2. The 1 st interface and the 2 nd interface of the second photoelectric coupling sensor PC2 are respectively and electrically connected with the A1 interface and the A2 interface of the single-pole double-throw relay RL 1. Specifically, two ends of the third resistor R3 are electrically connected to the 1 st interface and the 2 nd interface of the second photoelectric coupling sensor PC2, respectively, and a fourth resistor R4 is further connected between the 1 st interface of the second photoelectric coupling sensor PC2 and a1 of the single-pole double-throw relay RL 1. In addition, in this embodiment, the single-pole double-throw relay RL1 is connected to the central control unit 10 through a relay driving circuit, specifically, the relay driving circuit includes a fifth resistor R5, a sixth resistor R6 and a transistor Q1, specifically, the fifth resistor R5 is electrically connected to the base of the transistor Q1, one end of the sixth resistor R6 is connected between the fifth resistor R5 and the base of the transistor Q1, and the collector of the transistor Q1 is electrically connected to the 4-port of the single-pole double-throw relay RL 1. A diode D1 is electrically connected between the interface 4 and the interface 3 of the single-pole double-throw relay RL1, the interface 4 is electrically connected with the positive electrode of the diode D1, and the interface 3 is electrically connected with the negative electrode of the diode D1. The fifth resistor R5 is electrically connected to the control interface RLY _ CH1 of the first switch unit 20. The A1 circuit of the single-pole double-throw relay RL1 is electrically connected with an external power supply and serves as an input end of electric energy.
Specifically, when the control interface RLY _ CH1 of the central control unit 10 outputs a high potential, the base of the transistor Q1 of the drive relay drive circuit is raised to a high potential, the electrode of the transistor Q1 becomes a low potential, the 3 and 4 interfaces of the single-pole double-throw relay RL1 form a loop, the single-pole double-throw relay generates magnetic force, the 1 interface is conducted with the 5 interface, and the alternating voltage loaded at the 1 st pin and the 2 nd pin of the first photoelectric coupling sensor PC1 is 0 v. The first resistor R1 and the second resistor R2 are the voltage dividing and current dividing resistors of the first photoelectric coupled sensor PC1, and the pin A1B1_ DET detects that the 4 th pin of the first photoelectric coupled sensor PC1 is at a high potential. Similarly, it can be understood that the control interface RLY _ CH1 of the central control unit 10 outputs a high potential, the 1 st pin and the 2 nd pin of the second photoelectric coupling sensor PC2 are turned on, and an ac path is formed through the third resistor R3 and the fourth resistor R4, if the subsequent circuit connected to the 2 nd pin is turned on, the second photoelectric coupling sensor PC2 is turned on, and the A1C1_ DET pin detects that the 4 th pin of the second photoelectric coupling sensor PC2 is a low potential. The potential conditions of the first photoelectric coupling sensor PC1 and the second photoelectric coupling sensor PC2 can obtain the on-off state of the current controlled object according to a preset potential truth table corresponding to the on-off state of the controlled object.
Preferably, the dual control switch further comprises a rectifying unit 50, and the rectifying unit 50 is electrically connected to the input terminal IN of the first switching unit 20 and the first input terminal OUT1 and the second input terminal OUT2 of the first switching unit 20, respectively.
Specifically, the rectifying unit 50 is a three-way rectifying bridge, a first input end of the rectifying bridge is connected to the input end of the first switching unit 20, and a second input end and a third input end of the rectifying bridge are respectively electrically connected to the first output end OUT1 and the second output end OUT2 of the first switching unit 20, so as to convert the ac voltage into the dc voltage for output. Specifically, the dual-control switch further includes a voltage reduction unit 60, and the voltage reduction unit 60 is electrically connected to the output end of the rectification unit 50 to reduce the voltage of the output voltage of the rectification unit 50, so as to provide power to the central control unit 10, the first voltage detection unit 30, and the second voltage detection unit 40.
Preferably, the dual-control switch further comprises a wireless control unit 70, and the wireless control unit 70 is electrically connected with the central control unit 10. Specifically, the wireless control unit 70 may be a wireless connection mode such as bluetooth, ZigBee (ZigBee), and the like. Specifically, the wireless terminal may be electrically connected to the wireless control unit 70, and send a control command to the central control unit 10 to control the first switch unit 20. In some embodiments, the central control unit 10 is further electrically connected to the key unit 90, specifically, the key unit 90 may be a physical switch such as a key switch or a tact switch, and the key unit 90 may also send a control command to the central control unit 10 to control the first switch unit 20.
The utility model also provides a two accuse control systems, including foretell two accuse switches. In one embodiment, the dual control system further comprises a light emitting element electrically connected to the dual control switch.
Referring to fig. 3, in an embodiment of the dual control system, the light emitting element L1 is electrically connected to the first output terminal OUT1 of the first switch unit 20 of the dual control switch, and the central control unit 10 directly controls the switch closing direction of the single-pole double-throw relay of the first switch unit 20 to turn on the light emitting element.
In another embodiment, the dual-control system further comprises a light emitting element and a second switch unit, the first output end OUT1 and the second output end OUT2 of the first switch unit 20 of the dual-control switch are electrically connected with the second switch unit through wires, and the output end of the second switch power supply is electrically connected with the light emitting element.
Referring to fig. 4, in the second embodiment of the dual-control system, the first output terminal OUT1 of the first switch unit 20 in the dual-control switch is electrically connected to the first input terminal of the second switch unit 80, and the second output terminal OUT2 of the first switch unit 20 is electrically connected to the second input terminal of the second switch unit 80. The second switch unit 80 may be a single-pole double-throw switch, and the output terminal of the second switch unit 80 is electrically connected to the light emitting element L2. Specifically, when the control interface RLY _ CH1 of central control unit 10 outputs high potential, the triode Q1 base of the drive relay drive circuit rises to high potential, the triode Q1 collector becomes bottom potential, the 3 and 4 interfaces of the single-pole double-throw relay form a loop, the single-pole double-throw relay generates magnetic force, the 1 interface is conducted with the 5 interface, and the alternating voltage loaded at the 1 st pin and the 2 nd pin of the first photoelectric coupling sensor PC3 is 0 volt. The first resistor R1 and the second resistor R2 are the voltage dividing and current dividing resistors of the first photoelectric coupled sensor PC3, the pin A1B1_ DET detects that the 4 th pin of the first photoelectric coupled sensor is at a high potential, and according to the high potential detected by the pin A1B1_ DET, it can be known that the interface 1 and the interface 5 are connected, that is, the first output terminal OUT1 of the first switch unit 20 is connected. Similarly, it can be understood that the control interface RLY _ CH1 of the central control unit 10 outputs a high potential, the 1 st pin and the 2 nd pin of the second photoelectric coupling sensor PC4 are turned on, and an ac path is formed through the third resistor R3 and the fourth resistor R4, if the second pin of the second switching unit 80 connected to the 2 nd pin is turned on, the second photoelectric coupling sensor PC4 is turned on, and the A1C1_ DET pin detects that the 4 th pin of the second photoelectric coupling sensor PC4 is a low potential. That is, the first output terminal OUT1 of the second switching unit 80 connected to the first output terminal OUT1 of the first switching unit 20 is turned off, and the second photo coupler sensor PC4 circuit is turned off, so that the light emitting element L2 cannot be lit. The on/off state of the current light-emitting element L2 can be known without looking at the light-emitting element L2. Similarly, when the pin A1B1_ DET detects a high voltage and the pin A1C1_ DET detects the 4 th pin of the second photo-coupled sensor PC4 as a high voltage, it can be known that the first input terminal of the second switch unit 80 corresponding to the first output terminal OUT1 of the first switch element is turned on, and the light emitting element L2 is turned on. It can be understood that when the pin A1B1_ DET detects a high voltage and the pin A1C1_ DET detects the 4 th pin of the second photo-coupled sensor PC4 as a low voltage, the central control unit 10 determines that the dual-control switch is disconnected from the second switch unit 80, and the light emitting device L2 is not turned on.
In yet another embodiment, the bi-control system includes a light emitting element L3 and two bi-control switches electrically connected between the two bi-control switches, and the light emitting element L3 is electrically connected with the two bi-control switches.
Referring to fig. 5-6, the two dual-controlled switches are respectively a first dual-controlled switch and a second dual-controlled switch, wherein the first output end OUT1 of the first switch unit 20 of the second dual-controlled switch is used as a first input end IN1, the second output end OUT2 is used as a second input end IN2, the first output end OUT1 is electrically connected to the first input end IN1, the second output end OUT2 is electrically connected to the second input end IN2, and the first dual-controlled switch and the second dual-controlled switch are connected to two ends of the light emitting element L3. Specifically, when the A1 interface and the B1 interface of the first switch unit 20 of the first dual-control switch are turned on, and the high level detected by the A1B1_ DET pin determines whether the pin A1B1_ DET of the second dual-control switch is detected to be the high level, if the pin A2B2_ DET of the second dual-control switch is detected to be the high level, the first output terminal OUT1 of the first dual-control switch and the first input terminal IN1 of the second dual-control switch are turned on, and the light emitting device L3 is turned on. It can be understood that when the pin A1B1_ DET of the first dual-control switch detects a high voltage and the pin A1C1_ DET detects the pin 4 of the second photo-coupled sensor PC2 as a low voltage, the central control unit 10 determines that the first dual-control switch and the second dual-control switch are disconnected, and the light emitting device L3 is not turned on. Similarly, the state of the light emitting element L3 can also be detected through the A2B2_ DET pin and the A2C2_ DET pin of the second double control switch
The utility model also provides a two accuse control system control method, be applied to foretell arbitrary two accuse control system, please refer to fig. 7, the method includes:
step S10: receiving a light-emitting element starting instruction;
step S20: acquiring a first level signal sent by the first voltage detection unit and a second level signal sent by the second voltage detection unit;
step S30: judging whether the light-emitting element is started or not according to the first level signal, the second level signal and a pre-stored potential truth table; if the light emitting element is not turned on, executing step S40; otherwise, the original state is maintained.
Step S40: the light emitting element is turned on according to the light emitting element turn-on instruction.
Specifically, for example, in the dual-control system with two dual-control switches, when receiving the light emitting device control command, the central control unit 10 of the first dual-control switch obtains the first level information A1B1_ DET of the first photo-coupling sensor of the first voltage detection unit 30 and the second level information A1C1_ DET of the second photo-coupling sensor of the second voltage detection unit 40, and the central control unit 10 of the second dual-control switch obtains the first level information A2B2_ DET of the first photo-coupling sensor of the first voltage detection unit 30 and the second level information A2C2_ DET of the second photo-coupling sensor of the second voltage detection unit 40. Level information of A1B1_ DET, A1C1_ DET, A2B2_ DET, and A2C2_ DET is acquired, and the light emitting element state is known by referring to a potential truth table of the following diagram:
| A1B1_DET | A1C1_DET | A2B2_DET | A2C2_DET | |
| 1 | 1 | 1 | 1 | Bright Light (LIGHT) |
| 1 | 0 | 0 | 1 | Killing rice |
| 0 | 1 | 1 | 0 | Killing rice |
Diagram-potential truth table
According to the detected level information, in comparison with the upper chart potential truth table, when the levels of A1B1_ DET, A1C1_ DET, A2B2_ DET, and A2C2_ DET are all high, the light emitting element is in a lit state. The central control unit 10 controls the first switch unit 20 to switch on the contacts when the light emitting element is in the off state.
The received command may also be a light emitting element turn-off command, and after receiving the command, the received command may detect the level states of each of the first voltage detection unit and the second voltage detection unit of the switch control system, determine the state of the light emitting element, and turn off the light emitting element if the light emitting element is in an on state. In some embodiments, the state of the light emitting element can be known by the level information corresponding to the potential truth table.
In the present embodiment, the state of the light emitting element is rapidly detected and determined by detecting the level state of the optical coupling sensor, and the state of the light emitting element is rapidly switched by the central control unit 10, thereby breaking the limit of the conventional three-position switch control.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (9)
1. A dual-control switch, comprising: the power supply comprises a central control unit, a first switch unit, a first voltage detection unit and a second voltage detection unit; the first switch unit comprises a first output end and a second output end, the central control unit is electrically connected with the first switch unit and is used for controlling the conduction of the first output end or the conduction of the second output end; the first voltage detection unit is electrically connected with the central control unit and the first output end of the first switch unit respectively, and the second voltage detection unit is electrically connected with the central control unit and the second output end of the first switch unit respectively.
2. The on-off switch of claim 1, further comprising a rectifying unit electrically connected to the input terminal of the first switching unit, the first output terminal of the first switching unit, and the second output terminal of the first switching unit, respectively.
3. The dual-control switch according to claim 2, further comprising a voltage-reducing unit electrically connected to the output terminal of the rectifying unit, wherein the voltage-reducing unit is configured to reduce the output voltage of the rectifying unit.
4. The dual control switch of claim 1, wherein the first voltage detection unit comprises a first photoelectric coupling sensor, a first resistor and a second resistor; the first photoelectric coupling sensor is electrically connected with the central control unit and the first switch unit; the first resistor and the second resistor are electrically connected with the first photoelectric coupling sensor respectively.
5. The dual control switch of claim 4, wherein the second voltage detection unit comprises a second photo-coupled sensor, a third resistor and a fourth resistor; the second photoelectric coupling sensor is electrically connected with the central control unit and the first switch unit; and the third resistor and the fourth resistor are respectively and electrically connected with the second photoelectric coupling sensor.
6. An on-board control system comprising the on-board switch of any one of claims 1-5.
7. The dual-control system according to claim 6, further comprising a light emitting element electrically connected to the dual-control aperture control switch.
8. The dual-control system according to claim 6, further comprising a light emitting element and a second switch unit, wherein the dual-control switch is electrically connected to the second switch unit and the light emitting element, respectively.
9. The dual-control system according to claim 6, wherein the dual-control system comprises a light emitting element and two dual-control switches, the two dual-control switches are electrically connected to each other, and the light emitting element is electrically connected to the two dual-control switches respectively.
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| CN201922074626.8U CN211557585U (en) | 2019-11-26 | 2019-11-26 | Double-control switch and double-control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111246636A (en) * | 2019-11-26 | 2020-06-05 | 深圳市酷客智能科技有限公司 | Double-control switch, double-control system and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111246636A (en) * | 2019-11-26 | 2020-06-05 | 深圳市酷客智能科技有限公司 | Double-control switch, double-control system and control method |
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