A power supply control circuit

Abstract

This utility model discloses a power control circuit, belonging to the field of power control technology. It includes an instruction input unit, a control unit, a power supply terminal, and several switching circuit units. The instruction input unit and the control unit's signal input terminals are connected. The control unit's signal output terminals are connected to the control terminals of each of the switching circuit units. The power supply terminals are connected to the power input terminals of each switching circuit unit. The power output of each switching circuit unit is connected to its corresponding load. The control unit receives control instructions from the instruction input unit and generates corresponding control signals to control the on / off state of the corresponding switching circuit units, thereby controlling the connection or disconnection of each load and the power supply terminal. This power control circuit can power various loads in the circuit system and can be further expanded for remote control, making the power supply more flexible and free, helping to reduce energy consumption and the influence between various loads in the system.

Description

Technical Field

[0001] This utility model belongs to the field of power control technology, and specifically relates to a power control circuit. Background Technology

[0002] In existing technologies, robot systems typically consist of multiple subsystems, including communication, sensing, display, and alarm subsystems, with the power control system providing synchronous power to each subsystem. Since the load components within each system are simultaneously powered, independent power supply is not possible, resulting in high overall power consumption and insufficient flexibility in power supply control. Summary of the Invention

[0003] The purpose of this invention is to provide a power control circuit so that the power supply of each subsystem load in the power system of the robot system is independent and does not affect each other.

[0004] The objective of this utility model can be achieved through the following technical solution: a power control circuit, comprising an instruction input unit, a control unit, a power supply terminal, and several switching circuit units. The instruction input unit is connected to the signal input terminal of the control unit, the signal output terminal of the control unit is connected to the control terminals of the several switching circuit units, the power supply terminal is connected to the power input terminal of each switching circuit unit, the power output of each switching circuit unit is connected to the corresponding load, and the control unit receives control instructions from the instruction input unit, generates corresponding control signals to control the on / off state of the corresponding switching circuit units to control whether each load and the power supply terminal are connected or not.

[0005] Preferably, the control unit is an MCU, and the I / O port of the MCU serves as a control signal output terminal to output high-level signals and low-level signals to the control terminal of the switching circuit unit.

[0006] Preferably, the instruction input unit is one or more combinations of a switch controller, a handheld mobile terminal, and a smartphone; the switch controller is connected to the control unit via a signal line, and the handheld mobile terminal and smartphone are both connected to the control unit via Ethernet, WiFi, or Bluetooth.

[0007] Preferably, the switching circuit unit includes a first resistor, a second resistor, a third resistor, a first MOSFET, a second MOSFET, a first capacitor, a second capacitor, a third capacitor, and a diode; the first end of the first resistor serves as a control terminal, and the second end of the first resistor is connected to the first end of the second resistor and the gate (G) of the first MOSFET; the second end of the second resistor and the source (S) of the first MOSFET are grounded together; the drain (D) of the first MOSFET is connected to the gate (G) of the second MOSFET and the first end of the third resistor; the source (S) of the second MOSFET and the second end of the third resistor are both connected to power supply terminals; the drain of the second MOSFET is connected to the first end of the first capacitor, the first end of the second capacitor, the first end of the third capacitor, and the cathode of the diode; the second ends of the first capacitor, the second end of the second capacitor, the second end of the third capacitor, and the anode of the diode are grounded; the positive terminal of the load is connected to the cathode of the diode, and the negative terminal of the load is grounded.

[0008] Preferably, the first MOS transistor is an N-MOS transistor, and the second MOS transistor is a P-MOS transistor.

[0009] Preferably, a shunt resistor is connected in series between the drain (D) of the first MOSFET and the gate (G) of the second MOSFET. The shunt resistor is used to prevent excessive current in the circuit, thus providing overcurrent protection.

[0010] Preferably, the third resistor is connected in parallel with an energy storage capacitor. The energy storage capacitor is used to reduce the switching speed of the switching circuit and maintain voltage stability across the load.

[0011] Preferably, the first capacitor is an electrolytic capacitor, with its first terminal being the positive terminal and its second terminal being the negative terminal.

[0012] Preferably, the diode is a transient voltage suppressor diode. This diode is used to prevent reverse current and protect other components in the circuit from damage.

[0013] Compared with existing technologies, this power control circuit has the following advantages: it uses a driver to achieve bidirectional synchronous clamping and loosening, and the clamping synchronization mechanism ensures that the clamps on both sides of the clamping base plate can move synchronously and reliably; by opening a V-shaped groove on the clamping base plate, it can limit the center of the round bar stock, ensuring that the axis of round bars of different sizes can be located at the same point and will not be offset. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the power control circuit in the embodiment.

[0015] Figure 2 This is a circuit diagram of the switching circuit unit in the embodiment. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 As shown, this utility model provides a power control circuit, including an instruction input unit, a control unit, a power supply terminal, and N switching circuit units. The instruction input unit and the control unit are connected to their signal input terminals. The signal output terminals of the control unit are connected to the control terminals of the N switching circuit units respectively. The power supply terminals are connected to the power input terminals of each switching circuit unit. The power output of each switching circuit unit is connected to its corresponding load RL. The control unit receives control instructions from the instruction input unit and generates corresponding control signals to control the on / off state of the corresponding switching circuit units, thereby controlling the connection or disconnection between each load RL and the power supply terminal. In this embodiment, the control unit uses an MCU, and the MCU's I / O port serves as the control signal output terminal, outputting high-level and low-level signals to the control terminals of the switching circuit units. The instruction input terminal uses a handheld mobile terminal, which is connected to the signal input terminal of the MCU via Ethernet. The number of switching circuit units is set according to the actual number of load RLs required, and this embodiment does not limit this number.

[0018] Combination Figure 2 Specifically, the switching circuit unit includes a first resistor R1, a second resistor R2, a third resistor R3, a shunt resistor R4, a first MOSFET Q1, a second MOSFET Q2, a first capacitor C1, a second capacitor C2, a third capacitor C3, an energy storage capacitor C4, and a diode D1. In this embodiment, the first MOSFET is an N-MOSFET; the second MOSFET is a P-MOSFET; the first capacitor C1 is an electrolytic capacitor with parameters of 47uF / 100V; and the diode D1 is a transient voltage suppression diode, model SMDJ14A.

[0019] The electronic components in the aforementioned switching circuit unit are connected as follows: The first terminal of the first resistor R1 serves as the control terminal, receiving high and low level signals from the MCU. The second terminal of the first resistor R1 is connected to the first terminal of the second resistor R2 and the gate (G) of the first MOSFET Q1. The second terminal of the second resistor R2 and the source (S) of the first MOSFET Q1 are grounded together. The drain (D) of the first MOSFET Q1 is connected to the first terminal of the shunt resistor R4. The second terminal of the shunt resistor R4 is connected to the gate (G) of the second MOSFET Q2 and the first terminal of the third resistor R3. Here, the shunt resistor R4 is mainly used to prevent excessive current in the circuit, serving as overcurrent protection. The source (S) of the second MOSFET Q2 and the second terminal of the third resistor R3 are both connected to the power supply terminal, which is 12V DC in this embodiment. The energy storage capacitor C4 is connected in parallel across the third resistor R3. Through the charging and discharging of the energy storage capacitor C4, the switching speed of the switching circuit is slowed down, maintaining the voltage stability across the load RL. The drain (D) of the second MOSFET Q2 is connected to the positive terminal of the first capacitor C1, the first terminal of the second capacitor C2, the first terminal of the third capacitor C3, and the negative terminal of the diode D1. The negative terminal of the first capacitor C1, the second terminal of the second capacitor C2, the second terminal of the third capacitor C3, and the positive terminal of the diode D1 are grounded. The positive terminal of the load RL is connected to the negative terminal of the diode D1, and the negative terminal of the load RL is grounded.

[0020] It should be noted that in other embodiments of the power control circuit provided by this utility model, the instruction input unit can also be implemented using one or more combinations of a switch controller, a handheld mobile terminal, and a smartphone, which can be selected according to actual needs. When a switch controller is selected, it can be connected to the control unit via a signal line; when a handheld mobile terminal or smartphone is selected, it can be connected to the control unit via Ethernet, WiFi, Bluetooth, etc.

[0021] Taking one of the switching circuit units as an example, the control process of the switching circuit unit in this embodiment is as follows:

[0022] When the MCU's I / O port outputs a high level, it is supplied to the gate (G) of the first MOSFET Q1 through the first resistor R1. The gate voltage Vgs of the first MOSFET rises above the source (S), at which point the first MOSFET Q1 turns on. At this time, the gate voltage of the second MOSFET Q2 is close to ground (GND), thereby increasing the voltage difference between the source and gate of the second MOSFET Q2 to nearly 12V, which in turn turns on the source and drain of the second MOSFET Q2. The 12V voltage input from the power supply is rectified and filtered by the first capacitor C1, the second capacitor C2, and the third capacitor C3 before being supplied to the load RL, thus realizing the circuit's power supply function.

[0023] When the MCU's I / O port outputs a low level, it is output to the gate (G) of the first MOSFET Q1 through the first resistor R1. The gate voltage of the first MOSFET decreases, and Vgs is insufficient to maintain the conduction state, so Q13 is turned off. The gate voltage of the second MOSFET rises to 12V under the action of the pull-up resistor, making the voltage difference between the source (S) and gate almost 0V. As a result, the second MOSFET is turned off, and the 12V voltage input from the power supply cannot be delivered to the load RL, thus realizing the circuit power-off function.

[0024] This invention controls the MCU to send different high and low level signals to different switching circuit units through the instruction input unit, so as to independently control the power supply status of each load RL and complete the independent power supply.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A power control circuit, comprising an instruction input unit, a control unit, a power supply terminal, and a plurality of switching circuit units, wherein the instruction input unit is connected to the signal input terminal of the control unit, the signal output terminal of the control unit is connected to the control terminals of the plurality of switching circuit units respectively, the power supply terminal is connected to the power input terminal of each switching circuit unit respectively, the power output of each switching circuit unit is connected to a corresponding load, and the control unit receives a control instruction input by the instruction input unit, generates a corresponding control signal to control the on / off state of the corresponding switching circuit unit to control whether each load and the power supply terminal are connected or not.

2. The power control circuit according to claim 1, characterized in that, The control unit is an MCU, and the I / O port of the MCU serves as a control signal output terminal, outputting high-level signals and low-level signals to the control terminal of the switching circuit unit.

3. A power control circuit according to claim 1 or 2, characterized in that, The instruction input unit is one or more combinations of a switch controller, a handheld mobile terminal, and a smartphone; the switch controller is connected to the control unit via a signal line, and the handheld mobile terminal and smartphone are both connected to the control unit via Ethernet, WiFi, and Bluetooth.

4. A power control circuit according to claim 1 or 2, characterized in that, The switching circuit unit includes a first resistor, a second resistor, a third resistor, a first MOSFET, a second MOSFET, a first capacitor, a second capacitor, a third capacitor, and a diode. The first terminal of the first resistor serves as a control terminal. The second terminal of the first resistor is connected to the first terminal of the second resistor and the gate (G) of the first MOSFET. The second terminal of the second resistor and the source (S) of the first MOSFET are grounded together. The drain (D) of the first MOSFET is connected to the gate (G) of the second MOSFET and the first terminal of the third resistor. The source (S) of the second MOSFET and the second terminal of the third resistor are both connected to power supplies. The drain of the second MOSFET is connected to the first terminal of the first capacitor, the first terminal of the second capacitor, the first terminal of the third capacitor, and the cathode of the diode. The second terminals of the first capacitor, the second terminal of the second capacitor, the second terminal of the third capacitor, and the anode of the diode are grounded. The positive terminal of the load is connected to the cathode of the diode, and the negative terminal of the load is grounded.

5. A power control circuit according to claim 4, characterized in that, The first MOSFET is an N-MOS transistor, and the second MOSFET is a P-MOS transistor.

6. A power control circuit according to claim 4, characterized in that, A shunt resistor is connected in series between the drain (D) of the first MOSFET and the gate (G) of the second MOSFET.

7. A power control circuit according to claim 4, characterized in that, The third resistor is connected in parallel with an energy storage capacitor.

8. A power control circuit according to claim 4, characterized in that, The first capacitor is an electrolytic capacitor, with the first terminal being the positive terminal and the second terminal being the negative terminal.

9. A power control circuit according to claim 4, characterized in that, The diode is a transient voltage suppression diode.

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