Intelligent dimming switch supporting touch control and off-line control

Abstract

The invention discloses an intelligent dimming switch supporting touch control and off-line control. The intelligent dimming switch comprises a step-down circuit electrically connected with a mains supply end, and the step-down circuit is electrically connected with a master controller, a wireless communication module, a touch control screen, a battery, a clock timing circuit and a two-way communication circuit; the battery supplies power to the clock timing circuit and the touch screen after the mains supply is cut off, the clock timing circuit, the touch screen, the wireless communication module and the two-way communication circuit are electrically connected with the master controller, and the two-way communication circuit is electrically connected with other intelligent dimming switches through independent communication lines; the main controller is electrically connected with the lamp dimming circuit, the lamp dimming circuit is electrically connected with the mains supply end and the lamp end, the lamp dimming circuit is provided with a first switch for controlling on and off of the lamp, and the main controller obtains on-off action signals when the first switch executes on and off. After power failure and network disconnection, the device can still synchronously display date and time; in the offline state, the equipment can still execute the task; and a traditional double-control switch circuit is compatible.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent switches, and in particular to an intelligent dimming switch supporting touch control and offline control. Background Art

[0002] Existing smart dimmers integrate wireless communication modules to support remote control via smartphones via apps. As long as there is a network connection, users can control the appliances regardless of whether they are at home or not. In addition, some devices also have touch display functions.

[0003] To meet the dimming and control needs of lighting fixtures, the two-way control switch of the lamp can be integrated with an intelligent dimmer. However, the timing function of the existing intelligent dimming switch depends on the network end. When the network is disconnected, its remote control function and timing function will be affected, resulting in the inability to complete the user's operation.

[0004] Secondly, due to the replacement of old and new lamps and old switch equipment, under the 3way function (dual-way control function of lamps), the new switch may be paired with a new switch, or the new switch may be paired with an old switch. Among them, the new switch needs to communicate with each other through a dedicated line. The new switch and the old switch must be compatible with the traditional 3way line to avoid line modification. How to better be compatible with the traditional 3way line and better realize the communication interaction between the two new switches has become a problem to be solved.

[0005] Therefore, there is an urgent need for an intelligent dimming switch that supports touch control and offline control and can solve one or more of the above problems. Summary of the invention

[0006] In order to solve one or more problems existing in the prior art, the present invention provides an intelligent dimming switch supporting touch control and offline control. The technical solution adopted by the present invention to solve the above problems is: an intelligent dimming switch supporting touch control and offline control, the intelligent dimming switch comprising: a step-down circuit, the step-down circuit is electrically connected to the main power terminal, the step-down circuit is electrically connected to the main control, the wireless communication module, the touch screen, the battery, the clock timing circuit, and the two-way communication circuit;

[0007] The battery supplies power to the clock timing circuit, the wireless communication module and the touch screen after the mains power is disconnected. The clock timing circuit, the touch screen, the wireless communication module and the two-way communication circuit are electrically connected to the main control. The two-way communication circuit is electrically connected to other intelligent dimming switches through independent communication lines.

[0008] The main control is electrically connected to the lamp dimming circuit, and the lamp dimming circuit is electrically connected to the mains end and the lamp end respectively. The lamp dimming circuit is provided with a first switch for controlling the opening and closing of the lamp. When the first switch is opened and closed, the main control obtains an opening and closing action signal.

[0009] In some embodiments, the bidirectional communication circuit includes: an RS485 chip, wherein the A pin and ground of the RS485 chip are respectively connected to the negative terminal and the positive terminal of a first voltage zener diode, a first resistor is connected in parallel at both ends of the first voltage zener diode, the second end of the first resistor and the positive terminal of the first voltage zener diode are grounded, the first end of the first resistor is electrically connected to the drain of the transistor, the cathode of the second voltage zener diode, and the cathode of the first diode, the negative terminal of the first voltage zener diode is electrically connected to the source of the transistor and the anode of the second voltage zener diode, the gate of the transistor is electrically connected to the B pin of the RS485 chip, and the B pin of the RS485 chip is connected to a low-voltage DC power supply;

[0010] The anode of the first diode is electrically connected to the first bypass, the power supply end of the first bypass is electrically connected to the step-down circuit, the power supply end is electrically connected to the anode of the second diode, the cathode end of the second diode is connected in series with a resistor, the resistor is electrically connected to the first end of the first capacitor, the second end of the first capacitor is grounded, and the first end of the first capacitor is electrically connected to an independent communication line and the anode of the first diode.

[0011] In some embodiments, the main control obtains the on / off action signal of the first switch through a micro switch.

[0012] In some embodiments, the step-down circuit is electrically connected to the over-temperature protection circuit, and the over-temperature protection circuit is electrically connected to the main control.

[0013] In some embodiments, the main control is electrically connected to a zero-crossing detection circuit, and the zero-crossing detection circuit is electrically connected to the mains.

[0014] In some embodiments, the step-down circuit is electrically connected to the screen dimming circuit, the screen dimming circuit is electrically connected to the touch screen and the main control, and the screen dimming circuit is used for dimming the touch screen.

[0015] In some embodiments, the main control is electrically connected to a button module, and the button module is used for human-computer interaction.

[0016] In some embodiments, the wireless communication module is any one or more of a Wi-Fi module, a Bluetooth module, a Zigbee module, a 4G module, a 5G module and a LoRa module.

[0017] The technical effects achieved by the present invention are as follows: after a power outage and network disconnection, the device can still synchronize the date and time display, and the screen can be lit up during a power outage; in an offline state, the device can still perform tasks such as: timed switching, automatic dimming according to different time periods, countdown, dimming selected according to the scene, etc., ensuring that the device and the controlled lamps can work as expected, and also supporting the conventional network recovery automatic synchronization function; the linkage between the two devices is achieved through a two-way communication circuit, thereby realizing the conventional two-way controllable switch function and eliminating the trouble of line modification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic block diagram of the present invention;

[0019] Figure 2 It is a schematic block diagram of the combination of the present invention and a traditional double-control switch;

[0020] Figure 3 This is a schematic diagram of the main control of the present invention;

[0021] Figure 4 is a schematic diagram of a wireless communication module of the present invention;

[0022] Figure 5 is a schematic diagram of a clock timing circuit of the present invention;

[0023] Figure 6 is a schematic diagram of a step-down circuit of the present invention;

[0024] Figure 7 is a schematic diagram of the first part of the two-way communication circuit of the present invention;

[0025] Figure 8 is a schematic diagram of the second part of the two-way communication circuit of the present invention;

[0026] Fig. 9 is a schematic diagram of an over-temperature protection circuit of the present invention;

[0027] Fig.10 It is a schematic diagram of a zero-crossing detection circuit of the present invention;

[0028] Fig.11 is a schematic diagram of the screen dimming circuit of the present invention;

[0029] Fig.12 is a schematic diagram of a battery charging circuit of the present invention;

[0030] Fig.13 This is a schematic diagram of the interface principle of the touch screen of the present invention. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more understandable, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from this description, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] like Figure 1 As shown, the present invention discloses an intelligent dimming switch supporting touch control and offline control, the intelligent dimming switch comprising: a step-down circuit, the step-down circuit is electrically connected to the main power terminal, the step-down circuit is electrically connected to the main control, the wireless communication module, the touch screen, the battery, the clock timing circuit, and the two-way communication circuit;

[0033] The battery supplies power to the clock timing circuit, the wireless communication module and the touch screen after the mains power is disconnected. The clock timing circuit, the touch screen, the wireless communication module and the two-way communication circuit are electrically connected to the main control. The two-way communication circuit is electrically connected to other intelligent dimming switches through independent communication lines.

[0034] The main control is electrically connected to the lamp dimming circuit, and the lamp dimming circuit is electrically connected to the mains end and the lamp end respectively. The lamp dimming circuit is provided with a first switch for controlling the opening and closing of the lamp. When the first switch is opened and closed, the main control obtains an opening and closing action signal.

[0035] like Figure 3 As shown, the main control is an MCU, which is equipped with corresponding peripheral circuits and a flash memory module, and can perform task storage and offline task execution; the wireless communication module is any one or more of a Wi-Fi module, a Bluetooth module, a Zigbee module, a 4G module, a 5G module and a LoRa module, such as Figure 4 As shown, the wireless communication module is a Wi-Fi module, and the main control realizes interaction with the user terminal through the wireless communication module; the clock timing circuit is as shown in Figure 5 As shown, it provides a timing function for the master control, thereby ensuring the normal execution of offline tasks and the normal display of the date; the step-down circuit is as shown Figure 6 As shown, it is a switching power supply step-down circuit; the battery charging circuit is as shown Fig.12 As shown, it is provided with an anti-backflow diode D6 and a filter network, and the filter network is two capacitors connected in parallel at the battery end; the main control is electrically connected to the touch screen through a corresponding interface, and the schematic diagram of this interface is shown in Fig.13 shown.

[0036] Furthermore, the intelligent dimming switch is provided with a key module, the main control is electrically connected to the key module, and the key module is used for human-computer interaction. The step-down circuit is electrically connected to the screen dimming circuit, the screen dimming circuit is electrically connected to the touch screen and the main control, and the screen dimming circuit is used for dimming the touch screen. Fig.11 shown.

[0037] Specifically, the main control obtains the on / off action signal in the following manner: the intelligent dimming switch is provided with a micro switch paired with the first switch, and the main control obtains the on / off action signal of the first switch through the micro switch.

[0038] Specifically, combined Figure 7 , Figure 8 As shown, the two-way communication circuit includes: an RS485 chip, the A pin and the ground of the RS485 chip are respectively connected to the negative terminal and the positive terminal of the first voltage zener diode DZ1, the two ends of the first voltage zener diode DZ1 are connected in parallel with a first resistor R17, the second end of the first resistor R17 and the positive terminal of the first voltage zener diode DZ1 are grounded, the first end of the first resistor R17 is electrically connected to the drain of the transistor Q1, the cathode of the second voltage zener diode DZ3, and the cathode of the first diode D1, the negative terminal of the first voltage zener diode DZ1 is electrically connected to the source of the transistor Q1 and the anode of the second voltage zener diode DZ3, the gate of the transistor Q1 is electrically connected to the B pin of the RS485 chip, the B pin of the RS485 chip is connected to a low-voltage DC power supply, the RO pin of the RS485 chip is electrically connected to the RX pin of the main control, and the DI pin is electrically connected to the TX pin of the main control;

[0039] The anode of the first diode D1 is electrically connected to the first bypass, the power supply terminal HV of the first bypass is electrically connected to the step-down circuit, the power supply terminal HV is electrically connected to the anode of the second diode D2, the cathode terminal of the second diode D2 is connected in series with resistors (R8, R9), the resistor is electrically connected to the first end of the first capacitor C8, the second end of the first capacitor C8 is grounded, the first end of the first capacitor C8 is electrically connected to an independent communication line 3-WAY-1 and the anode of the first diode D1, the independent communication line 3-WAY-1 is electrically connected to a two-way communication circuit of another device or a conventional single-open double-control switch, wherein the independent communication line can be an electric wire connected to a conventional single-open double-control switch, eliminating the trouble of line modification.

[0040] Specifically, in some embodiments, the step-down circuit is electrically connected to the over-temperature protection circuit, the over-temperature protection circuit is electrically connected to the main control, and the over-temperature protection circuit is as follows: Fig. 9As shown, it includes a thermistor NTC1, the second end of the thermistor is grounded, the first end of the thermistor is electrically connected to the NTC signal port of the main control, and the first end of the thermistor is electrically connected to the low-voltage DC power supply end of the buck circuit via a resistor R24.

[0041] Specifically, in some embodiments, the main control is electrically connected to the zero-crossing detection circuit, the zero-crossing detection circuit is electrically connected to the mains, and the zero-crossing detection circuit is electrically connected to the mains. Fig.10 As shown, it is used to detect the zero point of the AC power terminal.

[0042] Specifically, combined Figure 2 As shown, the use of the intelligent dimming switch in combination with a conventional double-control switch also includes: the lamp dimming circuit is electrically connected to the switching circuit, the two contacts of the relay of the switching circuit are electrically connected to the first gear and the second gear respectively, the first gear and the second gear correspond to the lines of the two contacts of the switch at another location, the switching circuit is used to switch the connection between the first gear, the second gear and the lamp dimming circuit, the switching circuit is electrically connected to the main control, the first gear, the second gear are electrically connected to the load detection circuit, the load detection circuit is electrically connected to the main control, the load detection circuit is used to detect which gear the lamp is working through and feed back to the main control, the load detection circuit determines which gear the lamp is working through by detecting voltage or current signals, and it can be a voltage or current detection circuit, wherein both gears are configured with corresponding current / voltage detection branches.

[0043] To sum up, the present invention realizes that after power failure and network disconnection, the device can still synchronize the date and time display, and the screen can be lit up when the power is off; in the offline state, the device can still perform tasks, such as: timed switching, automatic dimming according to different time periods, countdown, dimming according to scene selection, etc., to ensure that the device and the controlled lamps can work as expected, and also support the conventional network recovery automatic synchronization function; the linkage between the two devices is realized through a two-way communication circuit, thereby realizing the conventional two-way controllable switch function and eliminating the trouble of line modification.

[0044] The above-described embodiments only express one or more implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An intelligent dimming switch supporting touch control and offline control, characterized in that: The intelligent dimming switch comprises: a step-down circuit, the step-down circuit is electrically connected to the main power terminal, the step-down circuit is electrically connected to the main control, the wireless communication module, the touch screen, the battery, the clock timing circuit, and the two-way communication circuit; The battery supplies power to the clock timing circuit, the wireless communication module and the touch screen after the mains power is disconnected. The clock timing circuit, the touch screen, the wireless communication module and the two-way communication circuit are electrically connected to the main control. The two-way communication circuit is electrically connected to other intelligent dimming switches through independent communication lines. The main control is electrically connected to the lamp dimming circuit, and the lamp dimming circuit is electrically connected to the mains end and the lamp end respectively. The lamp dimming circuit is provided with a first switch for controlling the opening and closing of the lamp. When the first switch is opened and closed, the main control obtains an opening and closing action signal.

2. The smart dimming switch supporting touch control and offline control according to claim 1, characterized in that: The two-way communication circuit comprises: an RS485 chip, wherein the A pin and the ground of the RS485 chip are respectively connected to the negative terminal and the positive terminal of a first voltage stabilizing diode, a first resistor is connected in parallel to both ends of the first voltage stabilizing diode, a second end of the first resistor and the positive terminal of the first voltage stabilizing diode are grounded, a first end of the first resistor is electrically connected to the drain of a transistor, a cathode of a second voltage stabilizing diode, and a cathode of the first diode, a negative terminal of the first voltage stabilizing diode is electrically connected to the source of the transistor and an anode of the second voltage stabilizing diode, a gate of the transistor is electrically connected to the B pin of the RS485 chip, and the B pin of the RS485 chip is connected to a low-voltage DC power supply; The anode of the first diode is electrically connected to the first bypass, the power supply end of the first bypass is electrically connected to the step-down circuit, the power supply end is electrically connected to the anode of the second diode, the cathode end of the second diode is connected in series with a resistor, the resistor is electrically connected to the first end of the first capacitor, the second end of the first capacitor is grounded, and the first end of the first capacitor is electrically connected to an independent communication line and the anode of the first diode.

3. The smart dimming switch supporting touch control and offline control according to claim 1, characterized in that: The main control obtains the opening and closing action signal of the first switch through the micro switch.

4. The smart dimming switch supporting touch control and offline control according to claim 1, characterized in that: The step-down circuit is electrically connected to the over-temperature protection circuit, and the over-temperature protection circuit is electrically connected to the main control.

5. The smart dimming switch supporting touch control and offline control according to claim 1, characterized in that: The main control is electrically connected to the zero-crossing detection circuit, and the zero-crossing detection circuit is electrically connected to the mains.

6. The smart dimming switch supporting touch control and offline control according to claim 1, characterized in that: The step-down circuit is electrically connected to the screen dimming circuit, the screen dimming circuit is electrically connected to the touch screen and the main control, and the screen dimming circuit is used for dimming the touch screen.

7. The smart dimming switch supporting touch control and offline control according to claim 1, characterized in that: The main control is electrically connected to a key module, and the key module is used for human-computer interaction.

8. The smart dimming switch supporting touch control and offline control according to claim 1, characterized in that: The wireless communication module is any one or more of a Wi-Fi module, a Bluetooth module, a Zigbee module, a 4G module, a 5G module and a LoRa module.

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