CN219981089U

CN219981089U - Intelligent single-live wire switching circuit

Info

Publication number: CN219981089U
Application number: CN202321200088.2U
Authority: CN
Inventors: 郑魁雄
Original assignee: Guangdong Yuejingrun Technology Co ltd
Current assignee: Guangdong Yuejingrun Technology Co ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-11-07
Anticipated expiration: 2033-05-17

Abstract

The utility model relates to the technical field of intelligent switches, in particular to an intelligent single-live wire switch circuit which comprises a main control MCU, a power supply circuit and a relay control output circuit, wherein the power supply circuit is composed of an AC-DC power supply circuit and a DC-DC power supply circuit, the AC-DC power supply circuit converts 220V alternating current into 12V direct current and supplies power to the relay control output circuit, the DC-DC power supply circuit converts the 12V direct current into 3.3V direct current and supplies power to the main control MCU, and the relay control output circuit is in communication connection with the main control MCU. The circuit of the utility model adopts a relay conduction mode to control the switch to be turned on and turned off, has high safety, can prevent the lamp from flickering, and effectively prolongs the service life of the lamp.

Description

Intelligent single-live wire switching circuit

Technical Field

The utility model relates to the technical field of intelligent switches, in particular to an intelligent single-live wire switch circuit.

Background

In daily life, a single live wire lighting switch is generally controlled by a simple mechanical switch, and the mechanical switch is used for controlling the on/off of a live wire, so as to control the on/off of a lamp. Currently, some corridor lamps use capacitive touch switches to control the lighting and extinguishing of the lamps. Both of these switches have some drawbacks, in which: the mechanical switch has a certain mechanical life, the capacitive touch switch is easy to generate misoperation, and the anti-interference capability is poor.

Currently, single live wire has some problems to be solved: 1. the single live wire power taking is generally to take power under the condition that a power taking circuit is connected with a load (such as a lamp) in series, and the power taking voltage is reduced to low-voltage direct current to supply power to a front-end component (such as an MCU), so that the front-end component needs to keep a state of running all the time, current is consumed, and because the single live wire power taking circuit is connected with the circuit in series, current flows in the lamp, the starting current of a common LED lamp and an incandescent lamp is very small, when the loop current is larger than the starting current of the lamp, the problem that the lamp flickers occurs, and the service life of the lamp is shortened; 2. in the case of a single live wire, the power supply generally cannot be made as an isolated power supply, increasing the risk of electric shock.

In order to solve the problems, the applicant designs an intelligent single-live wire switching circuit.

Disclosure of Invention

The utility model aims to provide an intelligent single-live wire switch circuit which adopts a relay conduction mode to control the on-off of a switch, has high safety, can prevent the lamp from flickering, effectively prolongs the service life of the lamp, and solves the problems raised by the technical background.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an intelligent single live wire switch circuit, includes master control MCU, power supply circuit and relay control output circuit, and wherein power supply circuit comprises AC-DC power supply circuit and DC-DC power supply circuit, and AC-DC power supply circuit converts the alternating current of 220V into the direct current of 12V to give relay control output circuit power supply, DC-DC power supply circuit converts the direct current of 12V into the direct current of 3.3V to give master control MCU power supply, relay control output circuit and master control MCU communication connection.

Preferably, the model of the master control MCU is M058LDN.

Preferably, the AC-DC power supply circuit is composed of an AC-DC power management chip M1, a fuse F1, a potentiometer RP1, an adjustable resistor RV1, an inductor L2, a capacitor CR1, a capacitor C2, a capacitor C3, a capacitor C4 and a capacitor C5, wherein one end of the fuse F1 is connected with a live wire of an input AC, the other end is connected with a pin 2 of the inductor L1, one end of the potentiometer RP1 is connected with a zero line of the input AC, the other end is connected with a pin 1 of the inductor L1, pins 3 and 4 of the inductor L1 are respectively connected with pins 1 and 2 of the AC-DC power management chip M1, the adjustable resistor RV1 and the capacitor CR1 are connected in parallel, two ends of the adjustable resistor RV1 and the capacitor CR1 are respectively connected with pins 1 and 2 of the inductor L1, the capacitor C3, the capacitor C4 and the capacitor C5 are connected in parallel, the inductor L2 is located at two ends of the capacitor C3 and the capacitor C4, and the capacitor C3 is connected with the capacitor C4, the other end of the inductor L2 is connected with the capacitor C1 and the capacitor C2 is connected with the pin 1 and the pin 2 of the AC-DC power management chip in parallel.

Preferably, the DC-DC power supply circuit includes a DC-DC power management chip U3, a fuse F2, a resistor R4, a resistor R5, a resistor R6, a diode D1, a diode D2, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, and an inductor L3, where one end of the fuse F2 is connected to an input 12V direct current voltage, the other end is connected to pin 5 of the DC-DC power management chip U3, the diode D1, the capacitor C6, and the capacitor C10 are connected in parallel, and one end of the diode D1, the capacitor C6, and the capacitor C10 is grounded, the other end is connected to pin 5 of the DC-DC power management chip U3, two ends of the resistor R4 are connected to pin 4 and pin 5 of the DC-DC power management chip U3, the capacitor C7, the capacitor C8, and the capacitor C9 are connected in parallel, one end of the capacitor C7, the capacitor C8, and the capacitor C9 are grounded, the other end is connected to pin 5 and the inductor L3, the two ends of the capacitor C11 are connected to pin 3, the two ends of the diode C6, and the other end of the diode C6 is connected to pin 3, and the other end of the DC-DC power management chip is connected to pin 3.

Preferably, the relay control output circuit comprises a relay control output switch K1A, a relay control output switch K2B, a relay control output switch K3C, a darlington tube U6, a diode D3, a diode D4, a capacitor C12, a resistor R2, a resistor R19, a resistor R43, a resistor R44, a photoelectric isolator U4 and a photoelectric isolator U5, wherein the relay control output switch K1A, the relay control output switch K2B and the relay control output switch K3C are connected in parallel and then are connected with a 16-number pin of the darlington tube U11, one end of a diode D10 and one end of a diode D20 are connected with a 12V direct current power supply end, the other end of the diode D10 is connected with 16-number pins and 15-number pins of the darlington tube U6, one end of the capacitor C12 is grounded, the other end of the resistor R2 is connected with a 9-number pin of the darlington tube U6, the resistor R2 and the resistor R44 are respectively located at two ends of the isolator U5, the resistor R2 and the resistor R44 are respectively connected with the 4-number pin of the resistor U6 and the resistor U4, the resistor R4 is connected with the 4-number pin of the resistor U6, the resistor R2 and the resistor R4 is far away from the end of the resistor U4, the resistor 3 is connected with the end of the resistor 3-number 4 is connected with the resistor 3-number 6, and the resistor 3-number 9 pin is connected with the end of the resistor 6, and the resistor 4-number 9-number pin is far from the resistor is connected with the end of the resistor 6, and the resistor is connected with the number 9-number pin.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model provides an intelligent single-live wire switching circuit, which is characterized in that an AC-DC power supply circuit converts 220V or 110V alternating current into 12V direct current during standby, and a DC-DC power supply circuit further reduces the 12V direct current to obtain 3.3V direct voltage to supply power to a main control MCU, so that the current required to be consumed during the circuit and standby is small and smaller than the starting current of an LED lamp, the minimum starting current of an energy-saving lamp and an incandescent lamp is higher than the starting current of the LED lamp, the phenomenon of flickering of the lamp does not occur, and the service life of the lamp is long.

2. The utility model controls the output circuit to be opened and closed through the relay, realizes the on-off of a single live wire, can realize the minimization of starting current, has high switching sensitivity and long service life, and the relay control output circuit in the utility model is controlled by the main control MCU, thus being capable of realizing the real intellectualization and being worth greatly popularized and applied.

Drawings

FIG. 1 is a schematic block diagram of the present utility model;

FIG. 2 is a schematic circuit diagram of an AC-DC power supply circuit of the present utility model;

FIG. 3 is a schematic circuit diagram of a DC-DC power supply circuit of the present utility model;

fig. 4 is a schematic circuit diagram of the relay control output circuit of the present utility model.

Reference numerals and names in the drawings are as follows:

1. a master control MCU; 2. a power supply circuit; 21. an AC-DC power supply circuit; 22. a DC-DC power supply circuit; 3. the relay controls the output circuit.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, an embodiment of the present utility model is provided: the utility model provides an intelligent single live wire switch circuit, this intelligent single live wire switch circuit includes master control MCU1, power supply circuit 2 and relay control output circuit 3, and wherein power supply circuit 2 comprises AC-DC power supply circuit 21 and DC-DC power supply circuit 22, and AC-DC power supply circuit 21 converts 220V's alternating current to 12V's direct current to the power supply of relay control output circuit 3, DC-DC power supply circuit 22 converts 12V's direct current to 3.3V's direct current to the power supply of master control MCU1, relay control output circuit 3 and master control MCU1 communication connection, master control MCU 1's model is M058LDN in this embodiment.

Referring to fig. 2, an AC-DC power supply circuit 21 in the present utility model is composed of an AC-DC power management chip M1, a fuse F1, a potentiometer RP1, an adjustable resistor RV1, an inductor L2, a capacitor CR1, a capacitor C2, a capacitor C3, a capacitor C4 and a capacitor C5, wherein one end of the fuse F1 is connected with a live wire of an input AC, the other end is connected with a pin 2 of the inductor L1, one end of the potentiometer RP1 is connected with a zero line of the input AC, the other end is connected with a pin 1 of the inductor L1, pins 3 and 4 of the inductor L1 are respectively connected with pins 1 and 2 of the AC-DC power management chip M1, the adjustable resistor RV1 and the capacitor CR1 are connected in parallel, two ends of the adjustable resistor RV1 and the capacitor CR1 are respectively connected with pins 1 and 2 of the inductor L1, the capacitor C3, the capacitor C4 and the capacitor C5 are connected in parallel, the inductor L2 is located at two ends of the capacitor C3 and the capacitor C4, and the capacitor C3 and the capacitor C4 are connected with the capacitor C1 and the capacitor C2, and the capacitor C1 is connected with the DC power management chip M12, and the capacitor C is connected with the DC power management chip is connected with the DC pin 12, and the DC power management chip is connected with the DC pin 12.

Referring to fig. 3, the DC-DC power supply circuit 22 in this embodiment includes a DC-DC power management chip U3, a fuse F2, a resistor R4, a resistor R5, a resistor R6, a diode D1, a diode D2, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, and an inductor L3, wherein one end of the fuse F2 is connected to an input 12V DC voltage, the other end is connected to pin 5 of the DC-DC power management chip U3, the diode D1, the capacitor C6, and the capacitor C10 are connected in parallel, one end of the diode D1, the capacitor C6, and the capacitor C10 is connected to pin 5 of the DC-DC power management chip U3, the other end is connected to pin 5 of the DC-DC power management chip U3, two ends of the resistor R4 are connected to pin 4 of the DC-DC power management chip U3, the capacitor C7, the capacitor C8, and the capacitor C9 are connected in parallel, one end of the capacitor C8 is grounded, the other end is connected to the resistor R5 and the inductor L3, the two ends of the capacitor C11 are connected to pin 5, the two ends of the resistor C3 are connected to pin 3, and the other end of the resistor C3 is connected to pin 3, and the other end of the DC-DC power management chip is connected to pin 3 to pin 23, and the other end of the DC-DC power management chip is connected to pin 3.

Referring to fig. 4, the relay control output circuit 5 in this embodiment includes a relay control output switch K1A, a relay control output switch K2B, a relay control output switch K3C, a darlington tube U6, a diode D3, a diode D4, a capacitor C12, a resistor R2, a resistor R19, a resistor R43, a resistor R44, a photo-isolator U4 and a photo-isolator U5, wherein the relay control output switch K1A, the relay control output switch K2B and the relay control output switch K3C are connected in parallel and then connected with pin 16 of the darlington tube U11, one end of the diode D10 and one end of the diode D20 are connected with a 12V dc power supply terminal, the other end of the diode D12 is connected with pin 9 of the darlington tube U6, the resistor R2 and the resistor R44 are respectively located at the photo-isolator U5, the pin 4 and the terminal 4 of the main control tube U6 are respectively connected with pin 4, the pin 4 and the pin 4 of the resistor U4 are respectively connected with the photo-isolator U6, the other end of the resistor C12V dc power supply terminal is connected with pin 9 of the darlington tube U6, the pin is connected with pin 4 pin 9 of the resistor R4, the pin 4 and pin 4 of the resistor R2 is far from the main control tube U4 is connected with pin 4, the pin 4 is connected with the pin 4, the pin 4 is respectively, and pin 3 is far from the pin 3 pin of the resistor 3 is connected with the pin 4.

Referring to fig. 1 to 4 again, the intelligent single-live wire switching circuit in the utility model is composed of a main control MCU1, a power supply circuit 2 and a relay control output circuit 3, wherein the power supply circuit 2 comprises an AC-DC power supply circuit 21 and a DC-DC power supply circuit 22, when in standby, the AC-DC power supply circuit 21 converts 220V or 110V alternating current into 12V direct current, the DC-DC power supply circuit 22 further reduces the voltage of the 12V direct current to obtain 3.3V direct voltage to supply power to the main control MCU1, the current consumed during circuit and standby is small and smaller than the starting current of the LED lamp, the minimum starting current of the energy-saving lamp and the incandescent lamp is higher than the starting current of the LED lamp, so that the lamp flickering phenomenon does not occur, the service life of the lamp is long, the relay control output switch K1A on the relay control output circuit 3, the relay control output switch K2B and the relay control output switch K3C are used for controlling the opening and closing of the intelligent switch, the single on-off is realized, the minimum starting current can be realized, the intelligent switch is high in sensitivity, the service life of the intelligent switch is long, and the intelligent switch is really realized by the intelligent control output circuit 3, and the intelligent control circuit 1 is worth the intelligent, and the intelligent control is realized by the popularization and has great application.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An intelligent single live wire switch circuit which is characterized in that: the intelligent control device comprises a main control MCU (1), a power supply circuit (2) and a relay control output circuit (3), wherein the power supply circuit (2) is composed of an AC-DC power supply circuit (21) and a DC-DC power supply circuit (22), the AC-DC power supply circuit (21) converts 220V alternating current into 12V direct current and supplies power to the relay control output circuit (3), the DC-DC power supply circuit (22) converts the 12V direct current into 3.3V direct current and supplies power to the main control MCU (1), and the relay control output circuit (3) is in communication connection with the main control MCU (1).

2. An intelligent single fire wire switching circuit according to claim 1, wherein: the model of the master control MCU (1) is M058LDN.

3. An intelligent single fire wire switching circuit according to claim 1, wherein: the AC-DC power supply circuit (21) is composed of an AC-DC power supply management chip M1, a fuse F1, a potentiometer RP1, an adjustable resistor RV1, an inductor L2, a capacitor CR1, a capacitor C2, a capacitor C3, a capacitor C4 and a capacitor C5, wherein one end of the fuse F1 is connected with a live wire inputting alternating current, the other end of the fuse F1 is connected with a No. 2 pin of the inductor L1, one end of the potentiometer RP1 is connected with a zero line inputting alternating current, the other end of the potentiometer RP1 is connected with a No. 1 pin of the inductor L1, a No. 3 pin and a No. 4 pin of the inductor L1 are respectively connected with a No. 1 pin and a No. 2 pin of the AC-DC power supply management chip M1, the adjustable resistor RV1 is connected with the capacitor CR1 in parallel, the two ends of the adjustable resistor RV1 and the capacitor CR1 are connected with the No. 1 pin and the No. 2 pin of the inductor L1, the capacitor C3, the capacitor C4 and the capacitor C5 are connected in parallel, the inductor L2 is positioned at the two ends of the capacitor C3 and the capacitor C4 and is electrically connected with the capacitor C3 and the capacitor C4, the capacitor C1 and the capacitor C2 are connected in parallel, one ends of the capacitor C1 and the capacitor C2 are grounded, and the other ends of the capacitor C1 and the capacitor C2 are connected with the No. 1 pin and the No. 2 pin of the AC-DC power management chip M1 respectively.

4. An intelligent single fire wire switching circuit according to claim 1, wherein: the DC-DC power supply circuit (22) comprises a DC-DC power supply management chip U3, a fuse F2, a resistor R4, a resistor R5, a resistor R6, a diode D1, a diode D2, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11 and an inductor L3, wherein one end of the fuse F2 is connected with an input 12V direct current voltage, the other end of the fuse F2 is connected with a No. 5 pin of the DC-DC power supply management chip U3, the diode D1, the capacitor C6 and the capacitor C10 are connected in parallel, one end of the diode D1, the capacitor C6 and the capacitor C10 is grounded, the other end of the diode D1 is connected with a No. 5 pin of the DC-DC power supply management chip U3, two ends of the resistor R4 are respectively connected with a No. 4 pin and a No. 5 pin of the DC-DC power supply management chip U3, the capacitor C7, the capacitor C8 and the capacitor C9 are connected in parallel, one end of the capacitor C7, the capacitor C8 and the capacitor C9 is grounded, the other end of the capacitor C9 is respectively connected with a No. 5 pin and the inductor L3, two ends of the capacitor C11 are respectively connected with a No. 5 pin and a No. 6 pin of the DC-DC power supply management chip U3, one end of the other end of the resistor C3 is connected with a No. 6, and one end of the DC-DC power supply management chip is connected with a No. 6, and one end of the DC-DC pin is connected with a No. 6.

5. An intelligent single fire wire switching circuit according to claim 1, wherein: the relay control output circuit (5) comprises a relay control output switch K1A, a relay control output switch K2B, a relay control output switch K3C, a darlington tube U6, a diode D3, a diode D4, a capacitor C12, a resistor R2, a resistor R19, a resistor R43, a resistor R44, a photoelectric isolator U4 and a photoelectric isolator U5, wherein the relay control output switch K1A, the relay control output switch K2B and the relay control output switch K3C are connected in parallel and then are connected with a 16-number pin of the darlington tube U11, one end of a diode D10 and one end of a diode D20 are connected with a 12V direct current power supply end, the other end of the diode D10 is connected with 16 and 15-number pins of the darlington tube U6, one end of the capacitor C12 is grounded, the other end of the resistor R2 is connected with a 9-number pin of the darlington tube U6, the resistor R2 and the resistor R44 are respectively located at two ends of the isolator U5, the resistor R2 and the resistor R44 are respectively connected with the 4-number pin of the resistor U6 and the resistor U4, the resistor R2 and the pin of the resistor R4 are respectively connected with the 4-number pin of the resistor U6 and the resistor U4, the resistor R4 is far away from the end of the resistor U6 is connected with the resistor U4, the resistor 3 is connected with the 3-number 4, the resistor 3-number 9 pin of the resistor is connected with the resistor 3, the end of the resistor is connected with the end of the resistor 6, and the resistor is connected with the end of the resistor 3 is far from the resistor 3, and the end is connected with the end of the resistor 9-number 9.