Soft switching-on and switching-off circuit
By designing a soft switch circuit that includes an electronic switch tube, a detection module and an MCU control module, the problems of traditional mechanical switches with large size, high cost and impact sound are solved, and the power consumption is reduced in standby mode, achieving a more efficient and humanized switch control.
Patent Information
- Application Number
- CN202323393792.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2033-12-12
AI Technical Summary
Traditional mechanical push-torque switches have problems such as large size, high cost and impact sound when used. At the same time, existing soft switch circuits consume high power in standby state.
Design a soft switch circuit that includes an electronic switch tube, a detection module and an MCU control module. Through the cooperation of the detection module and the MCU control module, it is possible to reduce power consumption during shutdown and avoid the generation of impact sounds.
Realizing the power consumption of power consumption during turning off, avoiding the impact of traditional mechanical switches, and more integrated and humanized, which improves the equipment experience.
Smart Images
Figure CN222395660U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switch control, and more specifically, to a soft switch circuit. Background Art
[0002] Traditional on / off machines all use mechanical push-twist switches as power switches to control them, which takes up a lot of space and costs a lot, is not conducive to product integration, and has various impact sounds.
[0003] The prior art usually uses a soft switch to control the system power on or off. Its advantage is that even after the power is turned off, part of the circuit is powered on and works in standby mode to detect the power button so that the power can be turned on again. Its disadvantage is that the standby circuit consumes a lot of power. Utility Model Content
[0004] The utility model aims to provide a soft on / off circuit to reduce the power consumption.
[0005] The utility model is realized by the following technical solutions:
[0006] A soft on / off circuit comprises an electronic switch tube, a detection module and an MCU control module, wherein the drain of the electronic switch tube is used to be connected to an input voltage; the source of the electronic switch tube is used to be connected to a load; the input end of the detection module is connected to both the drain and the gate of the electronic switch tube; the input end of the MCU control module is connected to the output end of the detection module; the output end of the MCU control module is connected to both the drain and the gate of the electronic switch tube; the output end of the detection module and the output end of the MCU control module are both grounded.
[0007] Optionally, the detection module includes a Schottky diode D1, a touch switch K1, a resistor R1 and a resistor R2; pin 1 of the Schottky diode D1 is connected to one end of the resistor R2; the other end of the resistor R2 is connected to one end of the resistor R1 and the gate of the electronic switch tube; the other end of the resistor R1 is connected to the drain of the electronic switch tube; pin 2 of the Schottky diode D1 is connected to the input end of the MCU control module; pin 3 of the Schottky diode D1 is connected to one end of the touch switch K1; and the other end of the touch switch K1 is grounded.
[0008] Optionally, the MCU control module includes an MCU control unit and a transistor Q2; the input end of the MCU control unit is connected to pin 2 of the Schottky diode D1; the input end of the MCU control unit is connected to the base of the transistor Q2; the emitter of the transistor Q2 is grounded; and the collector of the transistor Q2 is connected to one end of the resistor R2.
[0009] Optionally, it also includes an LED display module; the LED display module is connected to the output end of the MCU control unit.
[0010] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0011] ① Electronic switch tube Q1, detection module and MCU control circuit, the input end of the detection module is connected to the collector and base of the electronic switch tube Q1; the input end of the MCU control module is connected to the output end of the detection module; and the output end of the MCU control module is connected to the collector and base of the electronic switch tube Q1. The purpose of reducing power consumption when shutting down is achieved.
[0012] ② To effectively solve the impact sound when using traditional mechanical push-twist switches. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:
[0014] Figure 1 It is a structural schematic diagram of an electrical block diagram of a soft on / off circuit in an embodiment;
[0015] Figure 2 Schematic diagram of the circuit structure of a soft switching circuit in an embodiment.
[0016] Marks and corresponding parts names in the attached drawings:
[0017] 100-electronic switch tube; 200-detection module; 300-MCU control module. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0019] Example
[0020] The present embodiment provides a soft switching circuit, including an electronic switch tube 100, a detection module 200 and an MCU control module 300, wherein the drain of the electronic switch tube 100 is used to be connected to an input voltage; the source of the electronic switch tube 100 is used to be connected to a load; the input end of the detection module 200 is connected to the drain of the electronic switch tube 100 and the gate of the electronic switch tube 100; the input end of the MCU control module 300 is connected to the output end of the detection module 200; the output end of the MCU control module 300 is connected to the drain of the electronic switch tube 100 and the gate of the electronic switch tube 100; the output end of the detection module 200 and the output end of the MCU control module 300 are both grounded.
[0021] The electronic switch tube 100 is the electronic switch tube Q1 in the circuit structure.
[0022] In this embodiment, the detection module 200 includes a Schottky diode D1, a touch switch K1, a resistor R1 and a resistor R2; pin 1 of the Schottky diode D1 is connected to one end of the resistor R2; the other end of the resistor R2 is connected to one end of the resistor R1 and the gate of the electronic switch tube 100; the other end of the resistor R1 is connected to the drain of the electronic switch tube 100; pin 2 of the Schottky diode D1 is connected to the input end of the MCU control module 300; pin 3 of the Schottky diode D1 is connected to one end of the touch switch K1; the other end of the touch switch K1 is grounded.
[0023] In this embodiment, the MCU control module 300 includes an MCU control unit and a transistor Q2; the input end of the MCU control unit is connected to pin 2 of the Schottky diode D1; the input end of the MCU control unit is connected to the base of the transistor Q2; the emitter of the transistor Q2 is grounded; and the collector of the transistor Q2 is connected to one end of the resistor R2.
[0024] In this embodiment, an LED display module is also included; the LED display module is connected to the output end of the MCU control unit.
[0025] This embodiment provides a soft on / off circuit, and its working principle is as follows:
[0026] During the startup process, the voltage at the VccIN input terminal, when the K1 touch switch is pressed, the gate point of the electronic switch tube Q1 is pulled down. At this time, the source and drain of the electronic switch tube Q1 are turned on, and there is voltage at Vcc OUT. At the same time, the MCU control unit starts to work, making the LED display module work. The power on of the MCU control unit outputs a high voltage, turning on the transistor Q2, and then keeping the gate of the electronic switch tube Q1 at a low level, so that the source and drain of the electronic switch tube Q1 are always turned on, completing the startup. The MCU control unit cooperates with the power amplifier mute circuit of the subsequent stage to avoid impact sound.
[0027] During the shutdown process, long press K1 to touch the switch again. The MCU control unit detects the low level of the ON / OFFDET port through the Schottky diode D1, and the MCU control unit performs the shutdown action. The LED display module goes out, and the POWER ON port of the MCU control unit outputs a low level to turn off the transistor Q2. When the K1 touch switch is released, the gate of the electronic switch tube Q1 has a high potential, the electronic switch tube Q1 is turned off, and there is no voltage output at Vcc OUT, completing the shutdown.
[0028] The soft on / off circuit provided in this embodiment has at least the following advantages:
[0029] ① More integrated and user-friendly, it can be turned on and off with a touch of a switch.
[0030] ②It can avoid the impact sound of turning the machine on and off, effectively protecting consumers' ears and health.
[0031] ③ Combined with MCU drive display, the switch effect can be seen more intuitively.
[0032] ④It can achieve the purpose of reducing power consumption when shutting down.
[0033] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A soft on / off circuit, characterized in that: include: An electronic switch tube (100), wherein a drain electrode of the electronic switch tube (100) is used to be connected to an input voltage; and a source electrode of the electronic switch tube (100) is used to be connected to a load; A detection module (200), wherein an input end of the detection module (200) is connected to a drain of the electronic switch tube (100) and a gate of the electronic switch tube (100); An MCU control module (300), wherein an input end of the MCU control module (300) is connected to an output end of the detection module (200); and an output end of the MCU control module (300) is connected to a drain electrode of an electronic switch tube (100) and a gate electrode of the electronic switch tube (100); The output end of the detection module (200) and the output end of the MCU control module (300) are both grounded.
2. The soft switching circuit according to claim 1, characterized in that: The detection module (200) comprises a Schottky diode D1, a touch switch K1, a resistor R1 and a resistor R2; Pin 1 of the Schottky diode D1 is connected to one end of the resistor R2; The other end of the resistor R2 is connected to one end of the resistor R1 and the grid of the electronic switch tube (100); The other end of the resistor R1 is connected to the drain of the electronic switch tube (100); Pin 2 of the Schottky diode D1 is connected to the input end of the MCU control module (300); Pin 3 of the Schottky diode D1 is connected to one end of the touch switch K1; The other end of the touch switch K1 is grounded.
3. The soft on / off circuit according to claim 2, characterized in that: The MCU control module (300) comprises an MCU control unit and a transistor Q2; the input end of the MCU control unit is connected to pin 2 of the Schottky diode D1; The input end of the MCU control unit is connected to the base of the transistor Q2; The emitter of the transistor Q2 is grounded; The collector of the transistor Q2 is connected to one end of the resistor R2.
4. The soft switching circuit according to claim 3, characterized in that: Also includes an LED display module; The LED display module is connected to the output end of the MCU control unit.