A method for controlling emergency power supply during power outage of textile machinery

Abstract

A method for controlling a power outage emergency power supply for textile machinery uses a supercapacitor board as the emergency power supply. When mains power is available, the MCU detects and prompts the user to adjust the output voltage of the switching power supply to DC24V. It also controls pickup relay JC1 to close and power the boost module. The MCU detects and controls pickup relay JC2 to close and open based on the boost module output voltage and the supercapacitor board input and output voltages, switching between charging the supercapacitor board through the charging resistor path and through JC2. Simultaneously, the MCU controls pickup relay JC3 to close and power the step-down module. The MCU detects and prompts the user to adjust the output voltage of the step-down module to DC23V. When the MCU detects a power outage signal, it controls JC1 and JC2 to open and close pickup relay JC4, allowing the supercapacitor board to supply power. After 10 seconds, the MCU controls JC3 and JC4 to close, stopping power. This achieves a safe voltage emergency power supply.

Description

Technical Field

[0001] The present invention belongs to the technical field of textile machinery control, and in particular relates to a method for controlling a power failure emergency power supply of textile machinery equipment. Background Art

[0002] In new textile machinery, more and more textile machinery adopts decentralized single-spindle drive control mode, and the power supply generally adopts DC24V switching power supply. In the event of sudden mains power outage, it is necessary to maintain emergency power supply for 6-10 seconds. The textile machinery handles the power outage emergency action so that the textile machinery can continue to operate when the mains power is restored, avoiding action disorder affecting product production quality and damaging equipment.

[0003] The standard battery UPS power supply commonly used on the market uses battery inverter to generate AC220V as an emergency power supply, which has the following defects: 1. When the power outage equipment is being repaired, the UPS power supply may still have high voltage, which can easily cause safety accidents due to negligence; 2. The standard battery UPS power supply does not have a power outage signal output. The textile machinery equipment control system needs to set up a special power outage signal detection circuit, which increases the complexity and cost of the control system. Summary of the Invention

[0004] The purpose of the present invention is to solve the defects of using a battery UPS power inverter to generate AC220V as an emergency power supply for textile machinery equipment, that is, the residual high voltage electricity is easy to cause safety accidents and a special power outage signal detection circuit needs to be set up, and to provide a power outage emergency power supply control method for textile machinery equipment that can ensure electricity safety and simplify the control system.

[0005] To this end, the present invention adopts the following technical solutions: a method for controlling a power-off emergency power supply for textile machinery equipment, using a switching power supply to convert the mains electricity into the power supply required by the textile machinery equipment, using an MCU as a control unit, the switching power supply input end is connected to the mains electricity supply, the switching power supply output end is connected to the driving power end of the textile machinery equipment, and the switching power supply output end is also connected to the power supply end of the MCU through a voltage stabilizing module to power the MCU, which is characterized in that a supercapacitor board is used as a power-off emergency power supply; a pull-in relay JC1, a boost module and a charging resistor are connected in series from the power switch to the output end of the supercapacitor board, a pull-in relay JC2 in parallel with the charging resistor is connected between the boost module and the supercapacitor board; the supercapacitor board is connected in series with a pull-in relay JC3, a step-down module, a pull-in relay JC4 and a charging resistor. After JC4, they are respectively connected to the voltage stabilizing module and the power end of the textile machinery driving device; the detection port of the MCU is respectively connected to the output end of the switching power supply, the output end of the boost module, the input and output ends of the supercapacitor board and the output end of the buck module through the voltage conversion circuit to detect the voltage value of each port; the detection end of the MCU is also connected to a power failure detection module, which is connected to the mains power supply and the switching power supply in parallel, and the output end of the power failure detection module is connected to the detection port of the MCU; the MCU is respectively controlled and connected to the suction relay JC1, the suction relay JC2, the suction relay JC3 and the suction relay JC4 to control the suction and disconnection of each suction relay; the MCU is connected to a digital tube; the MCU is connected to the power failure signal output interface through the suction relay JC5; its control principle is as follows:

[0006] (1) When there is mains power, the MCU detects whether the voltage value at the output end of the switching power supply is DC24V. If so, it supplies power to the textile machinery equipment and controls the pull-in relay JC1 to be pulled in to supply power to the boost module. Otherwise, the MCU displays the corresponding code on the digital tube to prompt the user to adjust the switching power supply so that the output voltage reaches DC24V.

[0007] (2) After the pull-in relay JC1 is pulled in, the MCU detects whether the output voltage of the boost module is DC60V. Otherwise, the MCU displays the corresponding code on the digital tube to prompt the adjustment of the boost module so that the output voltage reaches DC60V. The MCU detects whether the input and output voltage of the supercapacitor board reaches DC56V. Before reaching DC56V, the MCU controls the pull-in relay JC2 to disconnect and charge the supercapacitor board through the charging resistor path to prevent the charging current from being too large. After reaching DC56V, the MCU controls the pull-in relay JC2 to pull in and directly charge the supercapacitor board through the pull-in relay JC2 path. At the same time, the MCU controls the pull-in relay JC3 to pull in and power the buck module. The MCU detects whether the output voltage of the buck module is DC23V. Otherwise, the MCU displays the corresponding code on the digital tube to prompt the adjustment of the buck module so that the output voltage reaches DC23V.

[0008] (3) When the MCU detects a power-off signal at the output of the power-off detection module, the MCU controls the pull-in relays JC1 and JC2 to disconnect, and controls the pull-in relay JC4 to close. The supercapacitor board then supplies power to the MCU and the textile machinery drive power end through the step-down module. At the same time, the MCU controls the pull-in relay JC5 to close and outputs a power-off signal. After 10 seconds, the MCU controls the pull-in relays JC3 and JC4 to disconnect, and the supercapacitor board stops supplying power. The 10-second emergency power supply from the supercapacitor board enables the textile machinery to handle the power-off emergency action so that the textile machinery can continue to operate when the mains power is restored.

[0009] As a supplement and improvement to the above technical solution, the present invention also includes the following technical features.

[0010] A rectifier diode is connected between the pickup relay JC4 and the voltage stabilizing module and the power end for driving the textile machinery equipment.

[0011] The present invention can achieve the following beneficial effects: by using a supercapacitor board as a power failure emergency power supply, and cooperating with a boost module for charging and a buck module for external power supply, the power failure emergency power supply is charged and stored by the safe voltage of the switching power supply, and a safe voltage emergency power supply is output during a power failure emergency power supply, thereby improving the safety of the equipment. Using an MCU as a control unit to control charging and energy storage, emergency power supply and power failure signal output is simple and stable in operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 2 is a circuit diagram of the control method of the present invention. Implementation Method

[0013] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The described embodiments are only for illustration and explanation of the invention and do not constitute the sole limitation of the invention.

[0014] like Figure 1As shown, the present invention provides a power failure emergency power supply control method for textile machinery equipment, using a switching power supply V1 to convert the mains electricity into the power supply required by the textile machinery equipment, using an MCU as a control unit, the switching power supply input end is connected to the mains power supply J1-3 and J1-4, the switching power supply output end A is connected to the textile machinery equipment driving power end J1-1, the output end A of the switching power supply V1 is also connected to the power end of the MCU through a voltage stabilizing module V5 to power the MCU, and a supercapacitor board V3 is used as a power failure emergency power supply, and the supercapacitor board V3 adopts an existing common supercapacitor directly purchased from the market; a pull-in relay JC1, a boost module V2 and a charging resistor R1 are connected in series from the power switch V1 to the input and output ends C of the supercapacitor board V3, a pull-in relay JC2 in parallel with the charging resistor R1 is connected between the boost module V2 and the supercapacitor board V3; the supercapacitor board V3 is connected in series through a pull-in relay JC3, a step-down module V4, a pull-in relay JC4 and a rectifier diode D1 Then they are respectively connected to the voltage stabilizing module V5 and the textile machinery equipment driving power terminal J1-1; the detection port of the MCU is respectively connected to the output terminal A of the switching power supply V1, the output terminal B of the boost module V2, the input and output terminal C of the supercapacitor board V3 and the output terminal D of the buck module V4 through the voltage conversion circuit V7 to detect the voltage value of each port, and the voltage conversion circuit V7 converts the externally detected voltage value into a voltage value suitable for MCU detection; the detection end of the MCU is also connected to the power failure detection module V6, the power failure detection module V6 is connected to the mains power supply J1-3 and J1-4, and is connected in parallel with the switching power supply V1, and the output terminal E of the power failure detection module V6 is directly connected to the detection port of the MCU; the MCU is respectively controlled and connected with the suction relay JC1, the suction relay JC2, the suction relay JC3 and the suction relay JC4 to control the suction and disconnection of each suction relay; the MCU is connected to the digital tube; the MCU is connected to the power failure signal output interface J1-5 through the suction relay JC5.

[0015] Its control principle is:

[0016] (1) When there is mains power, the MCU detects whether the voltage value of the output terminal A of the switching power supply V1 is DC24V. If it is, it supplies power to the textile machinery equipment and controls the pull-in relay JC1 to be pulled in to supply power to the boost module V2. Otherwise, the MCU displays the corresponding code on the digital tube to prompt the user to adjust the switching power supply V1 so that the voltage of its output terminal A reaches DC24V.

[0017] (2) After the pull-in relay JC1 is pulled in, the MCU detects whether the voltage value of the output terminal B of the boost module V2 is DC60V. Otherwise, the MCU displays the corresponding code through the digital tube to prompt the adjustment of the boost module so that the voltage of its output terminal B reaches DC60V; the MCU detects whether the voltage value of the input and output terminal C of the supercapacitor board V3 reaches DC56V. Before reaching DC56V, the MCU controls the pull-in relay JC2 to disconnect and charge the supercapacitor board V3 through the charging resistor R1 path to prevent the charging current from being too large; after reaching DC56V, the MCU controls the pull-in relay JC2 to pull in and directly charge the supercapacitor board V3 through the pull-in relay JC2 path. At the same time, the MCU controls the pull-in relay JC3 to pull in and power the buck module V4. The MCU detects whether the voltage value of the output terminal D of the buck module V4 is DC23V. Otherwise, the MCU displays the corresponding code through the digital tube to prompt the adjustment of the buck module so that the output terminal voltage reaches DC23V.

[0018] (3) When the mains power is cut off, the MCU detects the power-off signal at the output of the power-off detection module V6. The MCU controls the pickup relays JC1 and JC2 to disconnect and controls the pickup relay JC4 to close. The supercapacitor board V3 supplies power to the MCU and the textile machinery equipment drive power end through the step-down module V4. At the same time, the MCU controls the pickup relay JC5 to close and output the power-off signal. After 10 seconds, the MCU controls the pickup relays JC3 and JC4 to disconnect, and the supercapacitor board V3 stops supplying power to the outside.

[0019] The switching power supply V1 is a commonly used product purchased from the market. The boost module V2, power failure detection module V6, buck module V4, voltage stabilization module V5 and voltage conversion circuit V7 are all commonly used circuit modules.

Claims

1. A method for controlling emergency power supply during power outages of textile machinery, wherein a switching power supply is used to convert mains electricity into the power supply required by the textile machinery, an MCU is used as a control unit, an input end of the switching power supply is connected to the mains electricity supply, an output end of the switching power supply is connected to a drive power end of the textile machinery, and the output end of the switching power supply is further connected to a power supply end of the MCU via a voltage stabilizing module to supply power to the MCU, wherein the method is characterized in that: A supercapacitor board is used as a power supply for emergency power failure; a pull-in relay JC1, a boost module and a charging resistor are connected in series from the power switch to the output end of the supercapacitor board; a pull-in relay JC2 is connected in parallel with the charging resistor between the boost module and the supercapacitor board; the supercapacitor board is connected to the voltage stabilizing module and the power end of the textile machinery equipment through a pull-in relay JC3, a step-down module and a pull-in relay JC4 in series; the detection port of the MCU is connected to the output end of the switching power supply, the output end of the boost module and the input end of the supercapacitor board through a voltage conversion circuit. The input and output terminals are connected to the output terminals of the step-down module to detect the voltage values of each port; the detection terminal of the MCU is also connected to a power-off detection module, which is connected to the mains power supply in parallel with the switching power supply, and the output terminal of the power-off detection module is connected to the detection port of the MCU; the MCU is respectively connected to the pull-in relay JC1, the pull-in relay JC2, the pull-in relay JC3 and the pull-in relay JC4 to control the pull-in and pull-out of each pull-in relay; the MCU is connected to a digital tube; the MCU is connected to the power-off signal output interface through the pull-in relay JC5; its control principle is as follows: (1) When there is mains power, the MCU detects whether the voltage value at the output end of the switching power supply is DC24V. If so, it supplies power to the textile machinery equipment and controls the pull-in relay JC1 to be pulled in to supply power to the boost module. Otherwise, the MCU displays the corresponding code on the digital tube to prompt the user to adjust the switching power supply so that the output voltage reaches DC24V. (2) After the pull-in relay JC1 is pulled in, the MCU detects whether the output voltage of the boost module is DC60V. Otherwise, the MCU displays the corresponding code on the digital tube to prompt the adjustment of the boost module so that the output voltage reaches DC60V. The MCU detects whether the input and output voltage of the supercapacitor board reaches DC56V. Before reaching DC56V, the MCU controls the pull-in relay JC2 to disconnect and charge the supercapacitor board through the charging resistor path to prevent the charging current from being too large. After reaching DC56V, the MCU controls the pull-in relay JC2 to pull in and directly charge the supercapacitor board through the pull-in relay JC2 path. At the same time, the MCU controls the pull-in relay JC3 to pull in and power the buck module. The MCU detects whether the output voltage of the buck module is DC23V. Otherwise, the MCU displays the corresponding code on the digital tube to prompt the adjustment of the buck module so that the output voltage reaches DC23V. (3) When the MCU detects the power-off signal at the output end of the power-off detection module, the MCU controls the pickup relays JC1 and JC2 to disconnect and controls the pickup relay JC4 to close. The supercapacitor board supplies power to the MCU and the textile machinery equipment drive power end through the step-down module. At the same time, the MCU controls the pickup relay JC5 to close and output the power-off signal. After 10 seconds, the MCU controls the pickup relays JC3 and JC4 to disconnect and the supercapacitor board stops supplying power to the outside.

2. The method for controlling emergency power supply of textile machinery according to claim 1, characterized in that: A rectifier diode is connected between the pickup relay JC4 and the voltage stabilizing module and the power end for driving the textile machinery equipment.

Images