CN219978731U - Drive control circuit and intelligent switch - Google Patents

Abstract

The utility model relates to the technical field of intelligent switches, in particular to a drive control circuit and an intelligent switch, wherein the drive control circuit comprises a relay, a power supply circuit, a drive control loop and a main control MCU, 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 and the drive control loop, the DC-DC power supply circuit converts the 12V direct current into 3V direct current and supplies power to the main control MCU, the input end of the drive control loop is connected with the relay, the output end of the drive control loop is connected with the main control MCU, and the drive control circuit further comprises a control switch which is connected with the relay. The driving control circuit has good reliability, can improve the safety of the intelligent switch, and is worth of being widely popularized and applied.

Description

Drive control circuit and intelligent switch

Technical Field

The utility model relates to the technical field of intelligent switches, in particular to a drive control circuit and an intelligent switch.

Background

The traditional drive control circuit of the electrical product switch usually adopts a triode to directly drive the on-off of the relay, thereby realizing the on-off of a high-voltage device controlled by a low-voltage signal, and finally controlling the control drive of the switch. In view of this, the applicant devised a drive control circuit and an intelligent switch.

Disclosure of Invention

The utility model aims to provide a driving control circuit and an intelligent switch, wherein the driving control circuit has the advantages of good reliability and capability of improving the safety of the intelligent switch, 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 driving control circuit comprises a relay, a power supply circuit, a driving control loop and a main control MCU, 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 and the driving control loop, the DC-DC power supply circuit converts the 12V direct current into 3V direct current and supplies power to the main control MCU, the input end of the driving control loop is connected with the relay, the output end of the driving control loop is connected with the main control MCU, the driving control loop comprises a first triode Q1, a second triode Q2, a first divider resistor R1, a second divider resistor R2, a third divider resistor R3, a fourth divider resistor R7, a fifth divider resistor R8 and an isolating diode D3, one end of the first divider resistor R1 is connected with the direct current power supply end of the 12V, the other end of the first triode Q1 is connected with the collector of the first triode Q1, the base electrode of the first triode Q1 is respectively connected with the third divider resistor R2 and the third divider resistor R3, the base electrode of the third divider resistor R3 is connected with the third divider resistor R7 and the third divider resistor R3 and the fourth divider resistor R3 is connected with the third triode Q8 in parallel, and the third divider resistor R3 is connected with the third divider resistor R3 and the third divider resistor R3 is connected with the third resistor R8 and the third divider resistor is connected with the third resistor R3.

Preferably, the drive control circuit further comprises a control switch, and the control switch is connected with the relay.

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 model of the master control MCU is M058LDN.

The utility model also provides an intelligent switch which comprises the drive control circuit.

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

1. the utility model provides a drive control circuit and an intelligent switch, wherein the drive control circuit comprises a relay, a power supply circuit, a drive control loop and a main control MCU, 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 and the drive control loop, the DC-DC power supply circuit converts the 12V direct current into 3V direct current and supplies power to the main control MCU, and the drive control loop is at least formed by the redundant design of two three-stage tubes, so that the problem of product control failure caused by failure of a single device in the traditional drive control circuit is solved, the reliability of the drive control of the electric switch is improved, and the problem of personal injury is avoided.

Drawings

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

FIG. 2 is a schematic circuit diagram of the present utility model;

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

fig. 4 is a circuit diagram of a DC-DC power supply circuit of the present utility model.

Reference numerals and names in the drawings are as follows:

1. a relay; 2. a power supply circuit; 21. an AC-DC power supply circuit; 22. a DC-DC power supply circuit; 3. a drive control loop; 4. a master control MCU; 5. and controlling the switch.

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.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1, an embodiment of the present utility model is provided: the driving control circuit comprises a relay 1, a power supply circuit 2, a driving control loop 3 and a main control MCU4, 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 1 and the driving control loop 3, the DC-DC power supply circuit 22 converts the 12V direct current into 3V direct current and supplies power to the main control MCU4, the input end of the driving control loop 3 is connected with the relay 1, the output end of the driving control loop 3 is connected with the main control MCU4, the relay 1 is controlled to be conducted through the driving control loop 3, the driving control circuit further comprises a control switch 5, the control switch 5 is connected with the relay 1, and the model of the main control MCU4 is M058LDN in the embodiment.

Referring to fig. 2, the driving control circuit of the present utility model includes a first triode Q1, a second triode Q2, a first voltage dividing resistor R1, a second voltage dividing resistor R2, a third voltage dividing resistor R3, a fourth voltage dividing resistor R7, a fifth voltage dividing resistor R8 and an isolation diode D3, wherein one end of the first voltage dividing resistor R1 is connected to a 12V dc supply end, the other end is connected to a collector of the first triode Q1, an emitter of the first triode Q1 is grounded, a base of the first triode Q1 is connected to the second voltage dividing resistor R2 and the third voltage dividing resistor R3, one end of the third voltage dividing resistor R3 far from the first triode Q1 is connected to a cathode of the isolation diode D3, an anode of the isolation diode D3 is connected to the main control MCU4 and the fourth voltage dividing resistor R7, the fourth voltage dividing resistor R7 and the fifth voltage dividing resistor R8 are connected in parallel, the fourth voltage dividing resistor R7 and the fifth voltage dividing resistor R8 are connected to a base of the second triode Q2, and an emitter of the second triode Q2 is grounded, and a collector of the relay 1 is connected to the emitter.

Referring to fig. 3, 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. 4, the DC-DC power supply circuit 22 in the present utility model 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 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 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, and the capacitor C9 is grounded, the other end is connected to pin 5 of the inductor L3, the two ends of the capacitor C11 are connected to pin 5 of the DC-DC power management chip U3, and the other end is connected to pin 3 of the DC-DC power management chip U3, and the other end is connected to pin 23 of the DC-DC power management chip, and the other end is connected to pin 3, and the other end of the DC-DC power management chip is connected to pin 3.

The utility model also provides an intelligent switch, which comprises the drive control circuit in the embodiment, and the structural characteristics of the intelligent switch are not repeated here.

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 (6)

1. A drive control circuit, characterized in that: 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 (1) and the drive control circuit (3), the DC-DC power supply circuit (22) converts the 12V direct current into 3V direct current and supplies power to the main control MCU (4), the input end of the drive control circuit (3) is connected with the relay (1), the output end of the drive control circuit is connected with the main control MCU (4), the drive control circuit (3) comprises a first triode Q1, a second triode Q2, a first divider resistor R1, a second divider resistor R2, a third divider resistor R3, a fourth divider resistor R7, a fifth divider resistor R8 and an isolation diode D3, one end of the first divider resistor R1 is connected with a direct current supply end of 12V, the other end of the first divider resistor R1 is connected with the third triode Q1 in parallel with the third triode Q2, the third divider resistor R3 is connected with the third triode Q7 and the third divider resistor R3 is connected with the third triode Q3 in parallel with the third triode Q3, the third divider resistor R3 is connected with the third triode Q3 and the third resistor R3 is connected with the third resistor R3 in parallel with the third resistor Q3 is connected with the third resistor R3, and the fourth divider resistor R7 and the fifth divider resistor R8 are both connected with the base electrode of the second triode Q2, the emitter electrode of the second triode Q2 is grounded, and the collector electrode is connected with the relay (1).

2. A drive control circuit according to claim 1, wherein: the relay also comprises a control switch (5), and the control switch (5) is connected with the relay (1).

3. A drive control 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. A drive control 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. A drive control circuit according to claim 1, wherein: the model of the main control MCU (4) is M058LDN.

6. An intelligent switch, characterized in that: comprising a drive control circuit as claimed in any one of claims 1-4.