A wireless smart wall switch with on-screen display of time and environmental information

Abstract

This invention provides a wireless smart wall switch with time and environmental information display, comprising a wireless module unit, a display and temperature / humidity unit, and a single-wire power supply unit. The wireless module unit includes a wireless module and a push-button switch; the wireless module communicates with an app, and the push-button switch is used for user control of the light fixture's on / off state. The display and temperature / humidity unit includes a temperature / humidity receiver, a break-code display, and a driving circuit. The temperature / humidity receiver acquires temperature and humidity information, which is then displayed on the break-code display after being received from the receiver and the wireless module. The single-wire power supply unit is connected to one end of a magnetic latching relay, and the other end of the magnetic latching relay is connected to the on-state power supply circuit. This invention provides a wireless smart wall switch with time and environmental information display, capable of acquiring and displaying temperature, humidity, weather, and time information on a screen. It can function as a combined thermometer / hygrometer and smart switch product.

Description

Technical Field

[0001] The present invention belongs to the field of electronic technology, and in particular relates to a screen-displayed wireless intelligent wall switch with time and environmental information. Background Art

[0002] Currently, most smart switches on the market are single-fire switches with limited power consumption. Therefore, the switches are only used as smart switches for lighting control and cannot provide more information to users.

[0003] Considering the device's expanded intelligent capabilities, this solution offers a wireless smart wall switch with a screen display that displays temperature, humidity, time, and weather information. This device not only controls home lighting but also captures ambient temperature and humidity information. Users can update the time and weather information with the device via the app. Furthermore, the device can be linked to other smart devices in the home, such as air conditioners, fans, and humidifiers, based on ambient temperature and humidity, to provide a more comfortable environment. Summary of the Invention

[0004] In view of this, the present invention aims to propose a wireless smart wall switch with a screen display of time and environmental information to solve the problem of the smart wall switch with a screen display of temperature, humidity, time and weather information.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A wireless intelligent wall switch with a screen display of time and environmental information, comprising a wireless module unit, a screen display and temperature and humidity unit, and a single-fire power supply unit;

[0007] The screen and temperature and humidity unit are connected to the wireless module unit, and the single-fire power supply unit is connected to the wireless module unit;

[0008] The wireless module unit includes a wireless module and a button switch. The wireless module is used to communicate with the APP, and the button is used for users to control the on and off of the lamp;

[0009] The screen display and temperature and humidity unit includes a temperature and humidity receiver, a code screen, a code screen and a driving circuit. The temperature and humidity receiver is used to obtain temperature and humidity information. The code screen and the driving circuit obtain the temperature and humidity information, weather and time information transmitted by the temperature and humidity receiver and the wireless module and display them on the code screen.

[0010] The single-fire power supply unit includes a closed power supply circuit, a magnetic latching relay, and an open power supply circuit, which is used to power the wireless module unit, the screen display, and the temperature and humidity unit. One end of the closed power supply circuit is connected to one end of the magnetic latching relay, and the other end of the magnetic latching relay is connected to the open power supply circuit.

[0011] Furthermore, the wireless module adopts either a zigbee module or a BLE mesh module.

[0012] Furthermore, the broken code screen and driving circuit adopt the low-power broken code screen driving chip HT69F2562.

[0013] Furthermore, the open-state power supply circuit includes: a low-power flyback switch chip U11, a transformer T1, a low-power flyback switch chip U11 pin 1 connected to one end of a capacitor 30, a low-power flyback switch chip U11 pin 2 connected to a resistor R45, a capacitor C29, and one end respectively, the other end of one end of the resistor R45, the capacitor C29, and the capacitor C30 are grounded, pins 5, 6, 7, and 8 of the low-power flyback switch chip U11 are all grounded, pin 1 of the low-power flyback switch chip U11 is connected to pin 3 of the transformer T1 through a resistor R40 and a Schottky diode D20, and pin 3 of the transformer T1 is connected through a diode D2 0. Resistor C23 is grounded. Pin 1 of transformer T1 is grounded through Schottky diode D18, resistor R35, and resistor R45. Resistor C19 and resistor C20 are also connected between Schottky diode 18 and resistor R35. The other ends of resistors C19 and C20 are both grounded. Pin 2 of transformer T1 is grounded. Pin 6 of transformer T1 is connected to pin 4 of low-power flyback switch chip U11. Relay_out is half-wave rectified by diode D39 and filter capacitor C32 and then connected to pin 5 of transformer T1. The Relay_out end is connected to the Relay_out end of the magnetic latching relay.

[0014] Furthermore, the closed-state power-taking circuit includes: an NMOS tube Q41, an operational amplifier chip U17, and an LDO chip U18. The D pole of the NMOS tube Q41 is connected to the live wire current, the S pole is the output terminal RELAY_IN, and a Schottky diode D36 is connected in series between the D pole and the S pole. The S pole is connected to the input terminal of the LDO chip U18 through the Schottky diode D37 and the Schottky diode D38 in sequence. At the same time, AC220_5V is connected to the input terminal of the LDO chip U18 through the Schottky diode D42. The output terminal of the LDO chip U18 is connected to the The overvoltage resistor R62 is connected to the negative end of the operational amplifier chip U17, and the positive end of the operational amplifier chip U17 is connected to the negative electrode of the Schottky diode D37 through the voltage regulator diode D35; the output end of the operational amplifier chip U17 is connected to the G pole of the NMOS tube Q41 through the current limiting resistor R61, is grounded through the pull-down resistor R60, and is connected to the base of the transistor Q40 through the current limiting resistor R63. The collector of the transistor Q40 is connected to the negative end of the operational amplifier chip U17 through the resistor R64, and the emitter of the transistor Q40 is grounded.

[0015] Compared with the prior art, the wireless smart wall switch with time and environment information displayed in the present invention has the following beneficial effects:

[0016] (1) The wireless smart wall switch with a time and environmental information display described in the present invention can obtain temperature, humidity, weather, and time information and display it on the screen. It can be used as a two-in-one product that combines a thermometer and a smart switch.

[0017] (2) The wireless smart wall switch with a screen display and time and environmental information described in the present invention can be linked to other smart devices in the home, such as air conditioners, fans, humidifiers, etc., based on the ambient temperature and humidity obtained by the device to provide users with a more comfortable environment.

[0018] (3) The wireless smart wall switch with a screen display and time and environmental information described in the present invention adopts an extremely low-power chip and combines with existing smart wall switches to bring users a significant smart experience on the basis of limited cost increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a structural block diagram of a wireless intelligent wall switch with a screen display and time and environment information according to an embodiment of the present invention;

[0021] Figure 2 This is a structural block diagram of the wireless module unit according to an embodiment of the present invention;

[0022] Figure 3 This is a structural block diagram of the screen display and temperature and humidity unit according to an embodiment of the present invention;

[0023] Figure 4 This is the screen display intention described in the embodiment of the present invention;

[0024] Figure 5 This is a block diagram of the single-fire power supply structure according to an embodiment of the present invention;

[0025] Figure 6 This is a circuit diagram of a closed state power supply circuit for a single-fire power supply according to an embodiment of the present invention;

[0026] Figure 7 This is a circuit diagram of a single-fire power-taking open state power-taking circuit according to an embodiment of the present invention;

[0027] Figure 8 This is a circuit diagram of a magnetic latching relay according to an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Wireless module unit; 2. Screen display and temperature and humidity unit; 3. Single-fire power supply unit; 4. Push button switch; 5. Wireless module; 6. Relay drive; 7. Temperature and humidity chip; 8. Code screen and drive circuit. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0034] like Figure 1As shown, a wireless smart wall switch with a screen display and time and environmental information includes a wireless module unit 1, a screen display and temperature and humidity unit 2, and a single-fire power supply unit 3. The wireless module unit 1 includes a wireless module and a push button switch, wherein the wireless module can be a Zigbee module or a BLE mesh module. The wireless module is used to communicate with the user's app. The user can update the time, weather and other information with the device through the app, and can control the switching of home lights and intelligent linkage. The push button switch is pressed by the user to control the lighting and can also be linked with other smart devices. The relay drive circuit is used to drive the magnetic latching relay to control the on and off of the light. The screen display and temperature and humidity unit 2 includes a code screen, a drive circuit, and a temperature and humidity chip. The single-fire power supply unit 3 includes a closed-state power supply circuit when the light is on, an open-state power supply circuit, and a magnetic latching relay for powering the wireless module unit 1 and the screen display and temperature and humidity unit 2.

[0035] like Figure 2 As shown, the wireless module unit 1 includes a Zigbee or BLE mesh wireless module 5, a push button switch 4, and a relay driver 6. The wireless module 5 can be a Zigbee or BLE mesh module. The wireless module is used to communicate with the user app, allowing users to update time, weather, and other information with the device through the app, control home lighting, and implement smart linkage. The push button switch 4 is pressed by the user to turn the lighting on and off and can also be linked with other smart devices. The relay driver 6 is used to drive the magnetic latching relay to control the lighting on and off.

[0036] like Figure 3 As shown, the screen display and temperature and humidity unit 2 includes a temperature and humidity chip 7, a code screen and a driving circuit 8. The temperature and humidity chip is a temperature and humidity receiver, wherein the code screen and driving circuit 8 use a low-power code screen driver chip HT69F2562, which has a built-in CPU and code screen driver function that can run at low power consumption. It can collect the temperature and humidity information of the temperature and humidity chip 7 through IIC and obtain the weather and time information transmitted by the wireless module through IIC, and then drive the code screen to display relevant content. The temperature and humidity sensor is Sensirion's Sensirion or Renesas's hs300x. The screen display and temperature and humidity unit 2 can both run at low power consumption, with a minimum current of less than 20ua. It will only collect real-time temperature and humidity information when the wireless module 5 actively obtains the information. It is generally set to collect once every 5s, and the collection time is about 50ms, which can greatly reduce the overall power consumption of this part, will not affect the device, but greatly improves the user experience. As Figure 4 For screen display example;

[0037] like Figure 5 As shown, the single-fire power supply unit 1 includes a closed power supply circuit 9, a magnetic latching relay 10 and an open power supply circuit 11.

[0038] like Figure 6 As shown, the closed-state power-taking circuit includes: NMOS tube Q41, operational amplifier chip U17 and LDO chip U18. The D pole of the NMOS tube Q41 is connected to the live wire current, the S pole is the output terminal RELAY_IN, and a Schottky diode D36 is connected in series between the D pole and the S pole. The S pole is connected to the input terminal of the LDO chip U18 through the Schottky diode D37 and the Schottky diode D38 in sequence. At the same time, AC220_5V is connected to the input terminal of the LDO chip U18 through the Schottky diode D42. The output terminal of the LDO chip U18 is connected to the The overvoltage resistor R62 is connected to the negative end of the operational amplifier chip U17, and the positive end of the operational amplifier chip U17 is connected to the negative electrode of the Schottky diode D37 through the voltage regulator diode D35; the output end of the operational amplifier chip U17 is connected to the G pole of the NMOS tube Q41 through the current limiting resistor R61, is grounded through the pull-down resistor R60, and is connected to the base of the transistor Q40 through the current limiting resistor R63. The collector of the transistor Q40 is connected to the negative end of the operational amplifier chip U17 through the resistor R64, and the emitter of the transistor Q40 is grounded.

[0039] The closed-state power circuit 9 is a MOS power circuit. The live wire current flows in from L_IN, passes through the DS terminal of the CSD17308Q3 MOS tube, and then flows out from RELAY_IN. The DS terminal of the MOS tube is connected in parallel with D36 B340LB-13-F for the path of large live wire current. Schottky diode D37 SM4007PL-TP is used to form a power supply loop from the live wire. The current in the power supply loop flows through D37 and then forms a 5V output voltage through the voltage regulator diode D35 MMSZ5242B-7-F. After being filtered by C10, it passes through the Schottky diode D38SM4003PL-TP to generate a 5V DC voltage (relative to the ground L_IN). Then, it flows through the filter capacitors C24 and C25 into the U18LDO LD2981ABU33TR to generate a 3.3V DC voltage. After passing through the filter capacitor C27, it is divided by the current limiting resistors R62 and R64 and enters the negative terminal of the op amp U17 LM321MF. The positive terminal of U17 is connected to a delay circuit consisting of R59 and C9, which, in conjunction with D35, controls the output of op amp U17. This output, through pull-down resistor R60 and current-limiting resistor R63, controls the collector and emitter of transistor Q40 (MMBT3904), thereby controlling the voltage at the negative terminal of the op amp. The output of the op amp is also connected to the gate of the MOS transistor via current-limiting resistor R61, thereby controlling the power-up time of the MOS transistor. The closed-state power-up circuit 9 operates when the magnetic latching relay 10 is closed.

[0040] like Figure 7As shown, the open-state power supply circuit includes: a low-power flyback switch chip U11, a transformer T1, a low-power flyback switch chip U11 pin 1 connected to one end of the capacitor 30, a low-power flyback switch chip U11 pin 2 connected to a resistor R45 and a capacitor C29, respectively, the other end of the resistor R45, the capacitor C29, and the capacitor C30 are grounded, pins 5, 6, 7, and 8 of the low-power flyback switch chip U11 are all grounded, pin 1 of the low-power flyback switch chip U11 is connected to pin 3 of the transformer T1 through a resistor R40 and a Schottky diode D20, and pin 3 of the transformer T1 is connected through a Schottky diode D2 0. Resistor C23 is grounded. Pin 1 of transformer T1 is grounded through Schottky diode D18, resistor R35, and resistor R45. Resistor C19 and resistor C20 are also connected between Schottky diode 18 and resistor R35. The other ends of resistors C19 and C20 are both grounded. Pin 2 of transformer T1 is grounded. Pin 6 of transformer T1 is connected to pin 4 of low-power flyback switch chip U11. Relay_out is half-wave rectified by diode D39 and filter capacitor C32 and then connected to pin 5 of transformer T1. The Relay_out end is connected to the Relay_out end of the magnetic latching relay.

[0041] The on-state power supply circuit 11 operates when the magnetic latching relay 10 is disconnected.

[0042] like Figure 8 As shown, a control circuit of a magnetic latching relay is shown. A Schottky diode D40 and a Schottky diode D41 are connected in series between pins 1 and 6 of the magnetic latching relay 10. One end of the Schottky diode D40 is connected to the collector end of the transistor Q42. The base set of the transistor Q42 is connected to a resistor R66. The other end of the resistor R66 is connected to the R_on end of the wireless module. The base set of the transistor Q42 is also connected to a resistor R67. The other end of the resistor R67 is grounded. The emitter of the transistor Q42 is grounded. One end of the Schottky diode D41 is connected to the collector end of the transistor Q43. The base set of the transistor Q43 is connected to a resistor R68. The other end of the resistor R68 is connected to the R_off end of the wireless module. The base set of the transistor Q43 is also connected to a resistor R69. The other end of the resistor R69 is grounded. The emitter of the transistor Q43 is grounded. Pin 5 of the magnetic latching relay 10 is connected to the Relay_IN end of the closed-state power supply circuit. Pin 3 of the magnetic latching relay 10 is connected to the Relay_out end of the open-state power supply circuit.

[0043] The two IOs R_on and R_off of the wireless module are used to control the closing and opening of the relay respectively.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wireless intelligent wall switch with a screen display of time and environmental information, characterized in that: It comprises a wireless module unit (1), a screen display and temperature and humidity unit (2), and a single-fire power supply unit (3); The screen and the temperature and humidity unit are connected to the wireless module unit (1), and the single-fire power supply unit (3) is connected to the wireless module unit (1); The wireless module unit (1) comprises a wireless module (5) and a key switch, wherein the wireless module (5) is used to communicate with the APP, and the key switch is used for the user to control the on and off of the lamp; The screen display and temperature and humidity unit (2) comprises a temperature and humidity receiver, a code screen, a code screen and a driving circuit (8), wherein the temperature and humidity receiver is used to obtain temperature and humidity information, and the code screen and driving circuit (8) obtain the temperature and humidity information, weather and time information transmitted by the temperature and humidity receiver and the wireless module (5) and display them on the code screen, wherein the code screen and driving circuit (8) use a low-power code screen driving chip HT69F2562, which has a built-in CPU and code screen driving function that can run at low power consumption, collects temperature and humidity information of the temperature and humidity chip (7) through IIC, and obtains weather and time information transmitted by the wireless module through IIC, and then drives the code screen to display relevant content; wherein the temperature and humidity sensor is the HS300x of Sensirion or the HS300x of Renesas; the screen display and temperature and humidity unit (2) can both run at low power consumption, with a minimum current of less than 20 UA, and only collects real-time temperature and humidity information when the wireless module (5) actively obtains the information, and generally sets the collection once every 5 seconds, and the collection time is 50 ms, which can greatly reduce the overall power consumption; The single-fire power supply unit (3) comprises a closed-state power supply circuit, a magnetic latching relay and an open-state power supply circuit, and is used to supply power to the wireless module unit (1) and the screen display and temperature and humidity unit; one end of the closed-state power supply circuit is connected to one end of the magnetic latching relay, and the other end of the magnetic latching relay is connected to the open-state power supply circuit; The open-state power-taking circuit includes: a low-power flyback switch chip U11, a transformer T1, a pin 1 of the low-power flyback switch chip U11 connected to one end of a capacitor 30, a pin 2 of the low-power flyback switch chip U11 connected to one end of a resistor R45 and a capacitor C29 respectively, the other end of one end of the resistor R45, the capacitor C29, and the capacitor C30 are grounded, pins 5, 6, 7, and 8 of the low-power flyback switch chip U11 are all grounded, pin 1 of the low-power flyback switch chip U11 is connected to pin 3 of the transformer T1 through a resistor R40 and a Schottky diode D20, and pin 3 of the transformer T1 is connected through a diode D20 and a resistor C 23 is grounded, pin 1 of transformer T1 is grounded through Schottky diode D18, resistor R35 and resistor R45, resistor C19 and resistor C20 are also connected between Schottky diode 18 and resistor R35, the other ends of resistor C19 and resistor C20 are both grounded, pin 2 of transformer T1 is grounded, pin 6 of transformer T1 is connected to pin 4 of low-power flyback switch chip U11, pin 5 of transformer T1 is connected to diode D39 and filter capacitor C32, one end of diode D39 is connected to Relay_out end, and Relay_out end is connected to Relay_out end of magnetic latching relay.

2. A wireless intelligent wall switch with a screen display of time and environment information according to claim 1, characterized in that: The wireless module (5) adopts a zigbee module or a BLE mesh module.

3. The wireless intelligent wall switch with time and environment information displayed on the screen according to claim 1, characterized in that: The closed-state power-taking circuit includes: an NMOS tube Q41, an operational amplifier chip U17, and an LDO chip U18. The D pole of the NMOS tube Q41 is connected to the live wire current, the S pole is the output terminal RELAY_IN, and a Schottky diode D36 is connected in series between the D pole and the S pole. The S pole is connected to the input terminal of the LDO chip U18 through the Schottky diode D37 and the Schottky diode D38 in sequence. At the same time, AC220_5V is connected to the input terminal of the LDO chip U18 through the Schottky diode D42. The output terminal of the LDO chip U18 is connected to the DC power supply terminal of the LDO chip U18. The overvoltage resistor R62 is connected to the negative end of the operational amplifier chip U17, and the positive end of the operational amplifier chip U17 is connected to the negative electrode of the Schottky diode D37 through the voltage regulator tube D35; the output end of the operational amplifier chip U17 is connected to the G pole of the NMOS tube Q41 through the current limiting resistor R61, is grounded through the pull-down resistor R60, and is connected to the base of the transistor Q40 through the current limiting resistor R63. The collector of the transistor Q40 is connected to the negative end of the operational amplifier chip U17 through the resistor R64, and the emitter of the transistor Q40 is grounded.

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