CN215870901U - Power-off switching system for power supply of two-for-one twister control system - Google Patents
Power-off switching system for power supply of two-for-one twister control system Download PDFInfo
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- CN215870901U CN215870901U CN202121899347.6U CN202121899347U CN215870901U CN 215870901 U CN215870901 U CN 215870901U CN 202121899347 U CN202121899347 U CN 202121899347U CN 215870901 U CN215870901 U CN 215870901U
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Abstract
A power-off switching system for a power supply of a two-for-one twister control system belongs to the technical field of textile machinery control. The power supply switching device comprises a switching power supply, a frequency converter with a built-in 24VDC power supply, a power supply switching module, a control system power supply module, a power-off detection module and an MCU singlechip control module, wherein the power supply switching module is respectively connected with the switching power supply, the frequency converter and the control system power supply module, the MCU singlechip control module is respectively connected with the control system power supply module, the power supply switching module and the power-off detection module, and the power-off detection module is used for being connected with an external power supply. The power-off detection module detects the on-off of the external power supply in real time, and transmits a detected on-off signal of the external power supply to the MCU singlechip control module, and the MCU singlechip control module controls the power supply switching module to switch the switching power supply or a 24VDC power supply built in the frequency converter to supply power to the control system power supply module.
Description
Technical Field
The utility model belongs to the technical field of textile machinery control, and particularly relates to a power-off switching system for a power supply of a two-for-one twister control system.
Background
The two-for-one twister is spinning equipment which can twist two or more strands of yarns into one strand of yarn with high efficiency, and a plurality of transmission and electrical devices are involved in the twisting process, wherein the twisting motor is controlled by a frequency converter, a winding motor is controlled by a servo motor, and a traversing motor is controlled by a servo motor. When the power supply is accidentally cut off, the control system executes the power-off synchronous stop program when the power supply is cut off due to the fact that the power-off time of the control system is short, and the stop of the two-for-one twister is not controlled or cannot be synchronously stopped, so that the yarn twisting quality is influenced, and raw materials are wasted.
Disclosure of Invention
The utility model mainly solves the technical problems in the prior art and provides a power-off switching system for a power supply of a two-for-one twister control system.
The technical problem of the utility model is mainly solved by the following technical scheme: the utility model provides a outage switched systems for two-for-one twister control system power, includes switching power supply, built-in 24VDC power's converter, power switch module, control system power module, outage detection module and MCU single chip microcomputer control module, power switch module links to each other with switching power supply, converter, control system power module respectively, MCU single chip microcomputer control module links to each other with control system power module, power switch module, outage detection module respectively, outage detection module is used for linking to each other with external power source, and the external power source that will detect is cut off the signal transmission and is given MCU single chip microcomputer control module, MCU single chip microcomputer control module control power switch module switch switching power or the built-in 24VDC power supply of converter give control system power module.
Preferably, the output voltage of the switching power supply is 24V, the output current of the switching power supply is at least 2A, and the power-off maintaining time of the switching power supply is greater than or equal to 30 ms.
Preferably, the output voltage of the 24VDC power supply built in the frequency converter is 24V, and the output current of the 24VDC power supply built in the frequency converter is at least 200 mA.
Preferably, the power failure detection module includes a rectifier bridge B1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a diode D1, a TVS tube DZ1, a capacitor C1, a capacitor C2, a capacitor E9, an optocoupler U1, and a varistor RV1, two input terminals of the rectifier bridge B1 are respectively connected to an external power supply, the varistor RV1 is connected in parallel to two input terminals of the rectifier bridge B1, the resistor R1, the resistor R2, the resistor R3, the resistor R4, and the resistor R5 are sequentially connected in series, one end of the resistor R1 is connected to one output terminal of the rectifier bridge B1, one end of the resistor R5 is respectively connected to a negative electrode of the TVS tube DZ1, one end of the capacitor E1, and one end of the diode R1, one end of the positive electrode of the diode 1, one end of the resistor R1 and one input terminal of the diode D1, and one end of the diode 363672 The other end of electric capacity E9, the other end of resistance R8, the other end of electric capacity C1, diode D1's the positive pole, another way output that the another way input of opto-coupler U1 all connects rectifier bridge B1, the one end of resistance R7 and electric capacity C2's one end are connected respectively to the output of opto-coupler U1, and its public link is as the detection signal end of outage detection module, another termination voltage 3.3V of resistance R7, another way output of opto-coupler U1, the other end ground connection of electric capacity C2, the signal conversion time of outage detection module detection signal end is within 20 ms.
Preferably, the power switching module includes a diode D2, a diode D3, a TVS transistor DZ2, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C3, a MOS transistor Q1, and a transistor Q2, wherein an anode of the diode D2 is connected to an anode of the switching power supply, a cathode of the diode D2 is connected to an anode of the control system power supply module, an anode of the diode D3 is connected to an anode of the 24VDC power supply built in the inverter, a source of the MOS transistor Q1 is respectively connected to a cathode of the diode D3, a cathode of the TVS transistor DZ2, and one end of the resistor R2, a drain of the MOS transistor Q2 is connected to an anode of the control system power supply module, a gate of the MOS transistor Q2 is respectively connected to an anode of the diode DZ2, the other end of the resistor R2 and one end of the resistor R2, a base of the transistor Q2 is respectively connected to one end of the resistor R2 and one end of the transistor Q2, the emitting electrode of the triode Q2, the other end of the resistor R12 and the other end of the capacitor C3 are grounded, and the other end of the resistor R11 is connected with the signal output end of the MCU singlechip control module.
Preferably, the control system power supply module converts an external power supply into a voltage required by the control system.
Preferably, the external power supply is a 220V alternating current power supply obtained by converting and isolating 220V mains supply through an isolation transformer.
Preferably, the MCU singlechip control module is a singlechip.
The utility model has the following beneficial effects: the power-off detection module detects the on-off of the external power supply in real time, and transmits a detected on-off signal of the external power supply to the MCU singlechip control module which controls the power supply switching module to switch the switching power supply or a 24VDC power supply arranged in the frequency converter to supply power to the control system power supply module; when the external power supply is powered off, a 24VDC power supply arranged in the frequency converter supplies power to the power module of the control system, and the frequency converter continuously supplies power to the control system for a period of time due to inertial shutdown, so that the control system can execute a synchronous shutdown program. The utility model can realize synchronous halt of each motor after the power failure of the two-for-one twister, improves the utilization rate of raw materials and reduces the production cost.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a connection structure of the power switching module according to the present invention;
FIG. 3 is a circuit diagram of the power down detection module of the present invention.
In the figure: 1. a switching power supply; 2. a frequency converter; 3. a power switching module; 4. a control system power module; 5. a power-off detection module; 6. the MCU singlechip control module; 7. an external power source.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a power-off switching system for a power supply of a two-for-one twister control system is disclosed, as shown in figures 1-3, and comprises a switching power supply 1, a frequency converter 2 with a built-in 24VDC power supply, a power switching module 3, a control system power supply module 4, a power-off detection module 5 and an MCU singlechip control module 6, wherein the power switching module 3 is respectively connected with the switching power supply 1, the frequency converter 2 and the control system power supply module 4, the MCU singlechip control module 6 is respectively connected with the control system power supply module 4, the power switching module 3 and the power-off detection module 5, the control system power supply module 4 supplies power to the MCU singlechip control module 6, the power-off detection module 5 is connected with an external power supply 7, detects the on-off of the external power supply 7 in real time, transmits a detected on-off signal to the MCU singlechip control module 6, the MCU singlechip control module 6 outputs a corresponding control signal to the power switching module 3 according to the on-off signal, the power supply switching module 3 switches a 24VDC power supply arranged in the switching power supply 1 or the frequency converter 2 to supply power to the control system power supply module 4.
Specifically, when the external power supply 7 is powered, the power-off detection module 5 detects that the external power supply 7 is powered, and transmits a detected power-on signal to the MCU singlechip control module 6, the MCU singlechip control module 6 outputs a control signal to the power switching module 3, and the power switching module 3 switches the switching power supply 1 to supply power to the control system power supply module 4; when the external power supply 7 is powered off, the power-off detection module 5 detects the power-off of the external power supply 7 and transmits a detected power-off signal to the MCU singlechip control module 6, the MCU singlechip control module 6 outputs a control signal to the power switching module 3, the power switching module 3 switches a 24VDC power supply arranged in the frequency converter 2 to supply power to the control system power module 4, and the frequency converter 2 supplies power for the control system for a period of time due to inertial shutdown, so that the control system can execute a synchronous shutdown program.
The switching power supply 1 is a switching power supply 1 with the output voltage of 24V and the output current of more than 2A, and the power-off maintaining time of the switching power supply 1 is more than or equal to 30ms, so that when the power-off is ensured, the system has enough time to detect the power-off signal.
The output voltage of a 24VDC power supply built in the frequency converter 2 is 24V, and the output current is at least 200 mA.
The external power supply 7 is a 220V alternating current power supply obtained by converting and isolating 220V mains supply through an isolation transformer, can be used for system safety, and prevents electric shock.
The power failure detection module 5 comprises a rectifier bridge B1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a diode D1, a TVS tube DZ1, a capacitor C1, a capacitor C2, a capacitor E9, an optocoupler U1, and a piezoresistor RV1, wherein two input ends of the rectifier bridge B1 are respectively connected with an anode and a cathode of an external power supply 7, the piezoresistor RV1 is connected in parallel with the two input ends of the rectifier bridge B1, the resistor R1, the resistor R2, the resistor R3, the resistor E4 and the resistor R5 are sequentially connected in series, one end of the resistor R1 is connected with one output end of the rectifier bridge B1, one end of the resistor R5 is respectively connected with the cathode of the TVS tube DZ1, one end of the capacitor E1 and one end of the diode D1, and one end of the optocoupler 1, and one end of the TVS tube 1, and one end of the diode 1 are respectively connected with the anode of the diode 1, The other end of electric capacity E9, the other end of resistance R8, electric capacity C1's the other end, diode D1's the positive pole, another way output that the another way input of opto-coupler U1 all connects rectifier bridge B1, the one end of resistance R7 and electric capacity C2's one end are connected respectively to the output of opto-coupler U1's the same way, and its common link is as the detection signal end of outage detection module 5, another termination voltage 3.3V of resistance R7, the other end ground connection of another way output, electric capacity C2 of opto-coupler U1.
In the power failure detection module 5, a 220V alternating current power supply is rectified into a direct current power supply through a rectifier bridge B1, and then the direct current power supply is subjected to current limiting through a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a resistor R8 and then transmitted to the input end of an optical coupler U1, wherein a resistor R7 is a pull-up resistor at the output end of the optical coupler U1. When the external power supply 7 is powered on, the optocoupler U1 is switched on, and the detection signal end of the power-off detection module 5 outputs a low level; when the external power supply 7 is powered off, the optocoupler U1 is cut off, and a detection signal end of the power-off detection module 5 outputs a high level; the signal conversion time of the detection signal end is controlled within 20ms, so that the system can effectively detect the power-off signal within the power-off maintaining time of the switching power supply 1. The voltage dependent resistor RV1 is used for preventing the circuit from being damaged by lightning; the capacitor E9, the capacitor C1 and the capacitor C2 are filter capacitors; the diode D1 is an optocoupler U1 reverse voltage limiting to prevent the optocoupler U1 from reverse breakdown; the TVS tube DZ1 is used to protect the circuit from external interference.
The power supply switching module 3 comprises a diode D2, a diode D3, a TVS tube DZ2, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C3, a MOS tube Q1 and a triode Q2, wherein the anode of the switching power supply 1 is connected with the anode of a diode D2, the cathode of the diode D2 is connected with the anode of the control system power supply module 4, the cathode of the switching power supply 1 is connected with the cathode of the control system power supply module 4, the cathode of a 24VDC power supply built in the frequency converter 2 is connected with the cathode of the control system power supply module 4, the anode of a 24VDC power supply built in the frequency converter 2 is connected with the anode of a diode D3, the source of the MOS tube Q1 is respectively connected with the cathode of a diode D3, the cathode of the TVS tube DZ2 and one end of a resistor R9, the drain of the MOS tube Q1 is connected with the anode of the control system power supply module 4, the gate of the MOS tube 46Q 48 is respectively connected with the anode of the TVS tube DZ 5, the other end of the TVS tube DZ 58R 9 and one end of the resistor R57323, the other end of the resistor R10 is connected with the collector of a triode Q2, the base of the triode Q2 is respectively connected with one end of a resistor R12, one end of a capacitor C3 and one end of a resistor R11, the emitter of the triode Q2, the other end of the resistor R12 and the other end of the capacitor C3 are grounded, and the other end of the resistor R11 is connected with the signal output end of the MCU singlechip control module 6.
In the power supply switching module 3, the diodes D2 and D3 are used for preventing the control system power supply from flowing backwards to the built-in 24VDC power supply of the switching power supply 1 and the frequency converter 2; the MOS tube Q1 is used for controlling the on-off of a 24VDC power supply built in the frequency converter 2, when the external power supply 7 is electrified, the MOS tube Q1 is turned off, and when the external power supply 7 is powered off, the MOS tube Q1 is turned on, and as the switching speed of the MOS tube is high, seamless switching can be realized between the switching power supply 1 and the 24VDC power supply built in the frequency converter 2; the TVS transistor DZ2, the resistor R9, the resistor R10, the transistor Q2, the resistor R11, the capacitor C3, and the resistor R12 form a driving circuit of the MOS transistor Q1, and are used for controlling state transition of the MOS transistor Q1.
The control system power supply module 4 converts an external power supply 7 into voltage required by the control system and supplies power to each module of the control system.
The MCU singlechip control module 6 is a singlechip, can detect the on-off of a power-off signal, can control the switching of an MOS (metal oxide semiconductor) tube Q1 in the power supply switching module 3, and can execute a synchronous shutdown program of the two-for-one twister.
In summary, the power-off detection module detects the on/off of the external power supply in real time, and transmits a detected external power supply on/off signal to the MCU singlechip control module, and the MCU singlechip control module controls the power switching module to switch the switching power supply or the 24VDC power supply built in the frequency converter to supply power to the control system power supply module; when the external power supply is powered off, a 24VDC power supply arranged in the frequency converter supplies power to the power module of the control system, and the frequency converter continuously supplies power to the control system for a period of time due to inertial shutdown, so that the control system can execute a synchronous shutdown program. The utility model can realize synchronous halt of each motor after the power failure of the two-for-one twister, improves the utilization rate of raw materials and reduces the production cost.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the utility model is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (8)
1. The utility model provides a outage switched systems for two-for-one twister control system power, includes switching power supply, built-in 24VDC power's converter, power switch module, control system power module, outage detection module and MCU single chip microcomputer control module, its characterized in that, power switch module links to each other with switching power supply, converter, control system power module respectively, MCU single chip microcomputer control module links to each other with control system power module, power switch module, outage detection module respectively, outage detection module is used for linking to each other with external power, gives MCU single chip microcomputer control module with the external power turn-on and turn-off signal transmission that detects, MCU single chip microcomputer control module control power switch module switches switching power or the built-in 24VDC power supply of converter and gives control system power module.
2. The power-off switching system for the power supply of the two-for-one twister control system according to claim 1, wherein the output voltage of said switching power supply is 24V, the output current of said switching power supply is at least 2A, and the power-off maintaining time of said switching power supply is greater than or equal to 30 ms.
3. The power-off switching system for the power supply of the two-for-one twister control system of claim 1, wherein the output voltage of the 24VDC power supply built in the frequency converter is 24V, and the output current of the 24VDC power supply built in the frequency converter is at least 200 mA.
4. The system according to claim 1, wherein the power-off detection module comprises a rectifier bridge B1, a resistor R1, a resistor R2, a resistor R3, a diode D3, a TVS tube DZ 3, a capacitor C3, a capacitor E3, an optocoupler U3, and a piezoresistor RV 3, two input terminals of the rectifier bridge B3 are respectively connected to an external power supply, the piezoresistor RV 3 is connected in parallel to two input terminals of the rectifier bridge B3, the resistor R3, and the resistor R3 are sequentially connected in series, one end of the resistor R3 is connected to one output terminal of the rectifier bridge B3, one end of the resistor R3 is respectively connected to a negative electrode of the TVS tube DZ 3, one end of the capacitor E3, one end of the resistor R3 is connected to one end of the other resistor R3, and one end of the resistor R3 is respectively connected to one end of the other end of the rectifier bridge B3 One end of electric capacity C1, diode D1's negative pole and opto-coupler U1's input all the way, TVS pipe DZ 1's positive pole, electric capacity E9's the other end, resistance R8's the other end, electric capacity C1's the other end, diode D1's positive pole, opto-coupler U1's another way input all connect rectifier bridge B1's another way output, the output of opto-coupler U1 connects respectively resistance R7's one end and electric capacity C2's one end, and its common link is as the detection signal end of outage detection module, another termination voltage 3.3V of resistance R7, another way output of opto-coupler U1, electric capacity C2's the other end ground connection, the signal conversion time of outage detection module detection signal end is within 20 ms.
5. The power-off switching system for the power supply of the two-for-one twister control system of claim 1, wherein said power switching module comprises a diode D2, a diode D3, a TVS tube DZ2, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C3, a MOS tube Q1, and a transistor Q2, wherein the anode of said diode D2 is connected to the anode of the switching power supply, the cathode of said diode D2 is connected to the anode of the control system power supply module, the anode of said diode D3 is connected to the anode of the 24VDC power supply built in the inverter, the source of said MOS tube Q1 is connected to the cathode of the diode D3, the cathode of the TVS tube DZ2 and one end of the resistor R9, the drain of said MOS tube Q1 is connected to the anode of the control system power supply module, the gate of said MOS tube Q1 is connected to the anode of the TVS tube DZ2, the other end of the resistor R8269556, and the collector of said transistor Q8653, the base electrode of the triode Q2 is respectively connected with one end of a resistor R12, one end of a capacitor C3 and one end of a resistor R11, the emitting electrode of the triode Q2, the other end of the resistor R12 and the other end of the capacitor C3 are grounded, and the other end of the resistor R11 is connected with the signal output end of the MCU singlechip control module.
6. The system of claim 1, wherein the control system power module converts an external power source to a voltage required by the control system.
7. The power-off switching system for the power supply of the two-for-one twister control system according to claim 1, wherein said external power supply is 220V AC power supply obtained by converting and isolating 220V mains supply through an isolation transformer.
8. The power-off switching system for the power supply of the two-for-one twister control system according to claim 1, wherein said MCU singlechip control module is a singlechip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121899347.6U CN215870901U (en) | 2021-08-13 | 2021-08-13 | Power-off switching system for power supply of two-for-one twister control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121899347.6U CN215870901U (en) | 2021-08-13 | 2021-08-13 | Power-off switching system for power supply of two-for-one twister control system |
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| Publication Number | Publication Date |
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| CN215870901U true CN215870901U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121899347.6U Active CN215870901U (en) | 2021-08-13 | 2021-08-13 | Power-off switching system for power supply of two-for-one twister control system |
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- 2021-08-13 CN CN202121899347.6U patent/CN215870901U/en active Active
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