阅读说明：本技术 一种用于控制织布机离合器和制动器的切换电路及其工作方法 (Switching circuit for controlling clutch and brake of loom and working method thereof ) 是由 严周鹏 刘卓魁 曹娇娇 于君 丁一诺 陈卫兵 束慧 于 2020-03-20 设计创作，主要内容包括：本发明提供一种用于控制织布机离合器和制动器的切换电路,包括电源电路、高压控制电路、制动器离合器控制电路及单片机；电源电路包括变压器、整流电路、滤波电路和稳压电路；单片机的输出端输出KZGY、KZXC、KZZDQ、KZLHQ信号；高压控制电路为制动器离合器控制电路提供100V直流高压,制动器离合器控制电路包括消磁回路、制动器控制回路和离合器控制回路；本发明还提供一种用于控制织布机离合器和制动器的切换电路的工作方法,包括以下步骤：电源电路工作、高压控制电路工作、消磁功能实现、离合器功能实现、制动器功能实现的过程；本发明可以实现织布机启动速度快,点动灵敏的作用,能够提升织布质量和织布效率。(The invention provides a switching circuit for controlling a clutch and a brake of a loom, which comprises a power circuit, a high-voltage control circuit, a brake clutch control circuit and a single chip microcomputer; the power supply circuit comprises a transformer, a rectifying circuit, a filter circuit and a voltage stabilizing circuit; the output end of the singlechip outputs KZGY, KZXC, KZZDQ and KZLHQ signals; the high-voltage control circuit provides 100V direct current high voltage for the brake clutch control circuit, and the brake clutch control circuit comprises a degaussing loop, a brake control loop and a clutch control loop; the invention also provides an operating method for controlling a switching circuit of a clutch and a brake of a loom, comprising the following steps: the working of a power supply circuit, the working of a high-voltage control circuit, the realization of a demagnetization function, the realization of a clutch function and the realization of a brake function; the invention can realize the functions of high starting speed and sensitive inching of the loom and can improve the weaving quality and the weaving efficiency.)

1. A switching circuit for controlling a clutch and a brake of a loom is characterized by comprising a power supply circuit, a high-voltage control circuit, a brake clutch control circuit and a single chip microcomputer;

the power supply circuit comprises a transformer, a plurality of rectifying circuits, a plurality of filter circuits and a voltage stabilizing circuit; the primary winding end of the transformer is 380V alternating current, and the secondary winding end of the transformer is respectively 100V alternating current, 24V alternating current, 9V alternating current and 14V alternating current; the rectifying circuits and the filtering circuits are respectively used for rectifying and filtering alternating current of 100V, 24V, 9V and 14V to obtain direct current power supplies of 100V, 24V, 9V and 12V, and the 12V direct current power supply obtains a direct current power supply of 5V through a voltage stabilizing circuit to be used by a brake clutch control circuit;

the output end of the singlechip outputs KZGY, KZXC, KZZDQ and KZLHQ signals, wherein the KZGY signal is a pulse signal which is output by the singlechip and used for controlling high-voltage output; the KZXC signal is a pulse signal which is output by the singlechip and is used for controlling demagnetization; the KZZDQ signal is a pulse signal which is output by the singlechip and is used for controlling the brake; the KZLHQ signal is a pulse signal which is output by the single chip microcomputer and is used for controlling the clutch;

the high-voltage control circuit receives a KZGY signal from the singlechip and outputs 100V high voltage to a GYOUT node through a diode D5, and 100V direct-current high voltage is provided for the brake clutch control circuit and is used by the brake clutch control circuit; the high-voltage control circuit comprises an optocoupler PH01, an optocoupler PH02, a time-base integrated circuit NE555, a triode BG1 and a field-effect tube Q1; the optical coupler PH01 and the optical coupler PHO2 are electrically connected with a KZGY signal output end of the singlechip;

the brake clutch control circuit receives KZXC, KZZDQ and KZLHQ signals from the single chip microcomputer and receives a GYOUT signal from the high-voltage control circuit; the brake clutch control circuit comprises a degaussing loop, a brake control loop for controlling the brake to operate and a clutch control loop for controlling the clutch to operate; the input end of the demagnetization loop receives a KZXC signal from a single chip microcomputer, and the demagnetization loop comprises an optocoupler PH03, a triode BG2 and a relay JK 1; one end of the optical coupler PH03 is electrically connected with a 5V direct current and a KZXC signal output end of the singlechip; the brake control loop comprises an optocoupler PH05, a field effect transistor Q2 and a brake; one end of the optical coupler PH05 is electrically connected with a KZZDQ signal output end of the singlechip; the clutch loop comprises an optocoupler PH04, a field effect transistor Q3 and a clutch, wherein one end of the optocoupler PH04 is electrically connected with a KZLHQ signal output end of the singlechip.

2. The switching circuit for controlling a clutch and a brake of a loom according to claim 1, wherein the plurality of the rectifying circuits are a 100V rectifying circuit, a 24V rectifying circuit, a 9V rectifying circuit, a 14V rectifying circuit, respectively; the 100V rectifying circuit is composed of four rectifying diodes 6A 10; the 24V rectifying circuit is composed of four rectifying diodes 6A 10; the 9V rectifying circuit is composed of four rectifying diodes IN 4007; the 9V rectifying circuit adopts a rectifying bridge chip GBU 1010.

3. The switching circuit for controlling the clutch and brake of the loom as claimed in claim 1, wherein the voltage stabilizing circuit employs a three-terminal voltage stabilizing integrated circuit chip 7812.

4. The switching circuit for controlling the clutch and brake of the loom as claimed in claim 1, wherein the optocoupler PH01, the optocoupler PH02, the optocoupler PH03, the optocoupler PH04 and the optocoupler PH05 are all photocouplers PC 817.

5. The switching circuit for controlling the clutch and brake of the loom of claim 1, wherein the transistors BG1 and BG2 are NPN type transistor 8050.

6. The switching circuit for controlling the clutch and brake of the loom as claimed in claim 1, wherein the field effect transistor Q1, the field effect transistor Q2 and the field effect transistor Q3 adopt IRFP 460.

7. The switching circuit for controlling the clutch and brake of the loom according to claim 1, characterized in that the relay JK1 employs HH52P-12 VDC.

8. An operating method of a clutch and brake switching circuit for a loom according to claim 1, characterized by comprising the steps of:

s1, realizing the functions of the power circuit: the transformer converts 380V alternating current input from the outside into 100V alternating current, 24V alternating current, 9V alternating current and 14V alternating current; then, 100V direct current, 24V direct current, 9V direct current and 14V direct current are obtained after rectification by a plurality of rectification circuits and filtering by a plurality of filter circuits respectively, wherein the 14V direct current is subjected to voltage stabilization by a voltage stabilizing circuit and then outputs 12V direct current for a brake clutch control circuit;

s2, the high-voltage control circuit realizes the following functions: when the high-voltage control circuit is in a non-working state, the KZGY signal output by the singlechip is at a high level; when the high-voltage control circuit needs to work, the KZGY signal output by the single chip microcomputer is low-level pulse, and the optical coupler PH01 and the optical coupler PH02 are respectively controlled to be switched on; the high level of dozens of milliseconds is generated by controlling NE555 through an optocoupler PH02, a triode BG1 is conducted, a 9V power supply is provided for the optocoupler PH01, the optocoupler PH01 is conducted, the 9V power supply controls Q1 to be conducted through R10, and 100V high voltage is output to a GYOUT node through a diode D5 for a brake clutch control circuit to use;

s3, realizing the demagnetization function: when the KZZDQ signal output by the single chip microcomputer is at a high level, the brake is released, meanwhile, the KZXC outputs a low level of 10-20ms, the relay JK1 is attracted, 24V direct current is instantaneously and reversely added to a brake coil, the brake is immediately released, and reverse discharge demagnetization is realized;

s4, realizing the clutch function: after the demagnetization function is realized, the KZXC signal output by the single chip microcomputer is at a high level, the relay JK1 is released, and 24V direct current is provided to one end of the clutch through a normally closed contact; then, KZLHQ output by the singlechip is low level; meanwhile, the KZGY node outputs low-level pulses to generate instant high voltage which is superposed to the same end of the clutch; when KZLHQ output by the singlechip is low level, the optocoupler PH04 and the field effect transistor Q3 are conducted, the clutch is electrified, and due to instantaneous high voltage application, the brake is completely released, and the loom acts immediately;

s5, realizing the brake function: when the loom needs to stop, when the KZLHQ signal output by the single chip microcomputer is at a high level, the clutch is de-energized and released, the KZXC signal of the single chip microcomputer is at a high level, the relay JK1 does not act, and 24V direct current is provided to one end of the brake through a normally closed contact; meanwhile, a KZGY node of the singlechip outputs low-level pulses to generate instant high voltage, and the instant high voltage is also superposed to the same end of the brake; meanwhile, a KZZDQ signal output by the single chip microcomputer is at a low level, the optocoupler PH05 is switched on, the field effect transistor Q2 is switched on, the brake is electrified, and the brake is immediately attracted to brake.

9. The operating method of a switching circuit for controlling a clutch and a brake of a loom according to claim 8, wherein the KZLHQ signal is at a short-time low level in step S4 during the jog of the loom, the duration of the low level is adjustable within a range of 1ms-500ms, and the electric distance can be controlled as required.

10. The operating method of a switching circuit for controlling a clutch and a brake of a loom according to claim 8, wherein the KZLHQ signal is kept low until stopped in step S4 during normal operation of the loom.

Technical Field

The invention belongs to the technical field of loom control, relates to a control circuit of a loom, and particularly relates to a switching circuit for controlling a clutch and a brake of the loom and a working method of the switching circuit.

Background

In the loom control system, the conventional protection circuit of the brake and clutch control circuit is a release current circuit consisting of a reverse diode and 1 resistor connected to the 2 ends of the brake and the clutch. Although the circuit has a good circuit protection function, the situation that the brake and the clutch cannot be disengaged in time is caused because the materials used in the production of the brake and the clutch at present have residual magnetism.

In actual operation, the phenomena of slow starting speed, insensitive inching and the like often occur, the weaving quality is seriously influenced, and even when the loom is started, the clutch attracts the motor to run, but the belt is broken because the residual magnetism of the brake still brakes.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a switching circuit for controlling a clutch and a brake of a loom and a working method thereof, wherein the switching circuit has the functions of demagnetizing the brake, and the switching circuit has the advantages of high remanence, high starting speed and sensitive inching, so as to solve the problems in the background art.

In order to solve the above technical problem, an embodiment of the present invention provides a switching circuit for controlling a clutch and a brake of a loom, wherein the switching circuit includes a power circuit, a high voltage control circuit, a brake clutch control circuit, and a single chip;

the power supply circuit comprises a transformer, a plurality of rectifying circuits, a plurality of filter circuits and a voltage stabilizing circuit; the primary winding end of the transformer is 380V alternating current, and the secondary winding end of the transformer is respectively 100V alternating current, 24V alternating current, 9V alternating current and 14V alternating current; the rectifying circuits and the filtering circuits are respectively used for rectifying and filtering alternating current of 100V, 24V, 9V and 14V to obtain direct current power supplies of 100V, 24V, 9V and 12V, and the 12V direct current power supply obtains a direct current power supply of 5V through a voltage stabilizing circuit to be used by a brake clutch control circuit;

the output end of the singlechip outputs KZGY, KZXC, KZZDQ and KZLHQ signals, wherein the KZGY signal is a pulse signal which is output by the singlechip and used for controlling high-voltage output; the KZXC signal is a pulse signal which is output by the singlechip and is used for controlling demagnetization; the KZZDQ signal is a pulse signal which is output by the singlechip and is used for controlling the brake; the KZLHQ signal is a pulse signal which is output by the single chip microcomputer and is used for controlling the clutch;

the high-voltage control circuit receives a KZGY signal from the singlechip and outputs 100V high voltage to a GYOUT node through a diode D5, and 100V direct-current high voltage is provided for the brake clutch control circuit and is used by the brake clutch control circuit; the high-voltage control circuit comprises an optocoupler PH01, an optocoupler PH02, a time-base integrated circuit NE555, a triode BG1 and a field-effect tube Q1; the optical coupler PH01 and the optical coupler PHO2 are electrically connected with a KZGY signal output end of the singlechip;

the brake clutch control circuit receives KZXC, KZZDQ and KZLHQ signals from the single chip microcomputer and receives a GYOUT signal from the high-voltage control circuit; the brake clutch control circuit comprises a degaussing loop, a brake control loop for controlling the brake to operate and a clutch control loop for controlling the clutch to operate; the input end of the demagnetization loop receives a KZXC signal from a single chip microcomputer, and the demagnetization loop comprises an optocoupler PH03, a triode BG2 and a relay JK 1; one end of the optical coupler PH03 is electrically connected with a 5V direct current and a KZXC signal output end of the singlechip; the brake control loop comprises an optocoupler PH05, a field effect transistor Q2 and a brake; one end of the optical coupler PH05 is electrically connected with a KZZDQ signal output end of the singlechip; the clutch loop comprises an optocoupler PH04, a field effect transistor Q3 and a clutch, wherein one end of the optocoupler PH04 is electrically connected with a KZLHQ signal output end of the singlechip.

Further, the rectification circuits are respectively a 100V rectification circuit, a 24V rectification circuit, a 9V rectification circuit and a 14V rectification circuit; the 100V rectifying circuit is composed of four rectifying diodes 6A 10; the 24V rectifying circuit is composed of four rectifying diodes 6A 10; the 9V rectifying circuit is composed of four rectifying diodes IN 4007; the 9V rectifying circuit adopts a rectifying bridge chip GBU 1010.

Further, the voltage stabilizing circuit adopts a three-terminal voltage stabilizing integrated circuit chip 7812.

Further, the optical coupler PH01, the optical coupler PH02, the optical coupler PH03, the optical coupler PH04 and the optical coupler PH05 all adopt an optical coupler PC 817.

Further, the transistor BG1 and the transistor BG2 are NPN type transistor 8050.

Furthermore, IRFP460 is adopted as the field effect transistor Q1, the field effect transistor Q2 and the field effect transistor Q3.

Further, the relay JK1 adopts HH52P-12 VDC.

An embodiment of the present invention also provides an operating method for controlling a switching circuit of a clutch and a brake of a loom, characterized by comprising the steps of:

s1, realizing the functions of the power circuit: the transformer converts 380V alternating current input from the outside into 100V alternating current, 24V alternating current, 9V alternating current and 14V alternating current; then, 100V direct current, 24V direct current, 9V direct current and 14V direct current are obtained after rectification by a plurality of rectification circuits and filtering by a plurality of filter circuits respectively, wherein the 14V direct current is subjected to voltage stabilization by a voltage stabilizing circuit and then outputs 12V direct current for a brake clutch control circuit;

s2, the high-voltage control circuit realizes the following functions: when the high-voltage control circuit is in a non-working state, the KZGY signal output by the singlechip is at a high level; when the high-voltage control circuit needs to work, the KZGY signal output by the single chip microcomputer is low-level pulse, and the optical coupler PH01 and the optical coupler PH02 are respectively controlled to be switched on; the high level of dozens of milliseconds is generated by controlling NE555 through an optocoupler PH02, a triode BG1 is conducted, a 9V power supply is provided for the optocoupler PH01, the optocoupler PH01 is conducted, the 9V power supply controls Q1 to be conducted through R10, and 100V high voltage is output to a GYOUT node through a diode D5 for a brake clutch control circuit to use;

s3, realizing the demagnetization function: when the KZZDQ signal output by the single chip microcomputer is at a high level, the brake is released, meanwhile, the KZXC outputs a low level of 10-20ms, the relay JK1 is attracted, 24V direct current is instantaneously and reversely added to a brake coil, the brake is immediately released, and reverse discharge demagnetization is realized;

s4, realizing the clutch function: after the demagnetization function is realized, the KZXC signal output by the single chip microcomputer is at a high level, the relay JK1 is released, and 24V direct current is provided to one end of the clutch through a normally closed contact; then, KZLHQ output by the singlechip is low level; meanwhile, the KZGY node outputs low-level pulses to generate instant high voltage which is superposed to the same end of the clutch; when KZLHQ output by the singlechip is low level, the optocoupler PH04 and the field effect transistor Q3 are conducted, the clutch is electrified, and due to instantaneous high voltage application, the brake is completely released, and the loom acts immediately;

s5, realizing the brake function: when the loom needs to stop, when the KZLHQ signal output by the single chip microcomputer is at a high level, the clutch is de-energized and released, the KZXC signal of the single chip microcomputer is at a high level, the relay JK1 does not act, and 24V direct current is provided to one end of the brake through a normally closed contact; meanwhile, a KZGY node of the singlechip outputs low-level pulses to generate instant high voltage, and the instant high voltage is also superposed to the same end of the brake; meanwhile, a KZZDQ signal output by the single chip microcomputer is at a low level, the optocoupler PH05 is switched on, the field effect transistor Q2 is switched on, the brake is electrified, and the brake is immediately attracted to brake.

In the jog process of the loom, the KZLHQ signal in step S4 is at a short-time low level, the duration of the low level is adjustable within a range of 1ms to 500ms, and the electric distance can be controlled as required.

Wherein, during the normal operation of the loom, the KZLHQ signal is kept at the low level in step S4 until stopping.

The invention has the beneficial effects that:

(1) the singlechip outputs KZGY, KZXC, KZZDQ and KZLHQ signals; the power supply circuit provides 100V, 24V, 9V and 12V direct current required by the high-voltage control circuit and the brake clutch control circuit.

(2) The high-voltage control circuit can provide instant 100V direct-current high voltage for the brake clutch control circuit under the control of the singlechip.

(3) The brake clutch control circuit comprises a degaussing loop, a brake control loop and a clutch control loop; when the demagnetization loop receives a KZXC signal of the single chip microcomputer and is at a low level, the relay JK1 is attracted, 24V direct current is instantaneously and reversely added to a brake coil, the brake is immediately released, and reverse discharge demagnetization is realized; the remanence in the brake is eliminated, the brake is prevented from being braked due to the remanence under the condition that the clutch attracts the motor to operate when the loom is started, so that the phenomenon of belt breakage is reduced, and the service lives of the motor, the belt, the brake and the clutch are prolonged. Meanwhile, when the clutch or the brake needs to work, the high-voltage control circuit provides 100V high-voltage direct current when receiving KZGY low-level pulses of the single chip microcomputer, and when the 100V high-voltage direct current is instantaneously superposed at one end of the clutch or the brake, the clutch or the brake acts immediately, so that the effects of high starting speed and sensitive inching of the loom are realized, and the weaving quality and the weaving efficiency can be improved.

(4) The high-voltage control circuit adopts the time-base integrated circuit NE555, when the high-voltage control circuit is in a non-working state, the NE555 outputs a low level, and the BG1 is not communicated; when the high-voltage control circuit is required to work, the KZGY signal output by the single chip microcomputer is low-level pulse, the NE555 outputs high-level pulse, the BG1 is communicated to provide 9V direct current, and the time for providing the 9V direct current can be controlled through the control of the NE555, so that the condition that the single chip microcomputer is damaged and high voltage is always applied to a clutch and a brake to cause damage is avoided.

Drawings

FIG. 1 is a circuit diagram of a power circuit for controlling a switching circuit of a clutch and a brake of a loom and a method for operating the same according to the present invention;

FIG. 2 is a circuit diagram of a high voltage control circuit for controlling the switching circuit of the clutch and brake of the loom and the working method thereof according to the present invention;

FIG. 3 is a circuit diagram of a brake clutch control circuit for controlling a switching circuit of a loom clutch and a brake and a method for operating the same according to the present invention;

FIG. 4 is a flow chart of a loom in normal operation of a switching circuit for controlling a clutch and a brake of the loom and a method of operating the same according to the present invention;

FIG. 5 is a flow chart of the present invention for controlling the clutch and brake switching circuit of the loom and the method of operating the same when the loom is stopped;

fig. 6 is a flow chart of a switching circuit for controlling a clutch and a brake of a loom and a method for operating the same according to the present invention, in which the loom is operated by jogging.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, 2 and 3, a switching circuit for controlling a clutch and a brake of a loom includes a power circuit, a high voltage control circuit, a brake clutch control circuit and a single chip.

The power supply circuit comprises a transformer, a plurality of rectifying circuits, a plurality of filter circuits and a voltage stabilizing circuit; the primary winding end of the transformer is 380V alternating current, and the secondary winding end of the transformer is respectively 100V alternating current, 24V alternating current, 9V alternating current and 14V alternating current; the rectifying circuits and the filtering circuits are respectively used for rectifying and filtering alternating current of 100V, 24V, 9V and 14V to obtain direct current power supplies of 100V, 24V, 9V and 12V, and the 12V direct current power supply obtains a direct current power supply of 5V through the voltage stabilizing circuit to be used by the brake clutch control circuit. Specifically, the rectification circuits are respectively a 100V rectification circuit, a 24V rectification circuit, a 9V rectification circuit and a 14V rectification circuit; the 100V rectifying circuit is composed of four rectifying diodes 6A 10; the 24V rectifying circuit is composed of four rectifying diodes 6A 10; the 9V rectifying circuit is composed of four rectifying diodes IN 4007; the 9V rectifying circuit adopts a rectifying bridge chip GBU 1010. The filter circuits are respectively connected with a 100V rectifying circuit, a 24V rectifying circuit, a 9V rectifying circuit, a 14V rectifying circuit and a voltage stabilizing circuit in parallel, and the filter or the filter and the capacitor are adopted to form the filter, and the voltage stabilizing circuit adopts a three-terminal voltage stabilizing integrated circuit chip 7812; see figure 1 for details.

KZGY, KZXC, KZZDQ and KZLHQ output ends of the single chip microcomputer respectively output KZGY, KZXC, KZZDQ and KZLHQ signals, wherein the KZGY signal is a pulse signal which is output by the single chip microcomputer and used for controlling high-voltage output; the KZXC signal is a pulse signal which is output by the singlechip and is used for controlling demagnetization; the KZZDQ signal is a pulse signal which is output by the singlechip and is used for controlling the brake; and the KZLHQ signal is a pulse signal which is output by the singlechip and is used for controlling the clutch.

The high-voltage control circuit receives a KZGY signal from the singlechip and outputs 100V high voltage to a GYOUT node through a diode D5, and 100V direct-current high voltage is provided for the brake clutch control circuit and is used by the brake clutch control circuit; the high-voltage control circuit comprises an optocoupler PH01, an optocoupler PH02, a time-base integrated circuit NE555, a triode BG1 and a field-effect tube Q1; the optical coupler PH01 and the optical coupler PHO2 are electrically connected with a KZGY signal output end of the singlechip; see figure 2 for details.

The brake clutch control circuit receives KZXC, KZZDQ and KZLHQ signals from the single chip microcomputer and receives a GYOUT signal from the high-voltage control circuit; the brake clutch control circuit comprises a degaussing loop, a brake control loop for controlling the brake to operate and a clutch control loop for controlling the clutch to operate; the input end of the demagnetization loop receives a KZXC signal from a single chip microcomputer, and the demagnetization loop comprises an optocoupler PH03, a triode BG2 and a relay JK 1; one end of the optical coupler PH03 is electrically connected with a 5V direct current and a KZXC signal output end of the singlechip; the brake control loop comprises an optocoupler PH05, a field effect transistor Q2 and a brake; one end of the optical coupler PH05 is electrically connected with a KZZDQ signal output end of the singlechip; the clutch loop comprises an optocoupler PH04, a field effect transistor Q3 and a clutch, wherein one end of the optocoupler PH04 is electrically connected with a KZLHQ signal output end of the singlechip; see figure 3 for details.

In a further embodiment, the optocoupler PH01, the optocoupler PH02, the optocoupler PH03, the optocoupler PH04 and the optocoupler PH05 all adopt an optocoupler PC 817.

In a further embodiment, the transistors BG1 and BG2 are NPN transistors 8050.

In a further embodiment, IRFP460 is used as the fet Q1, fet Q2, and fet Q3.

In a further embodiment, the relay JK1 employs HH52P-12 VDC.

A method of operating a switching circuit for controlling a loom clutch and brake, comprising the steps of:

s1, realizing the functions of the power circuit: the transformer converts 380V alternating current input from the outside into 100V alternating current, 24V alternating current, 9V alternating current and 14V alternating current; and then the voltage of the 14V direct current is stabilized by a voltage stabilizing circuit and then 12V direct current used by a brake clutch control circuit is output.

S2, the high-voltage control circuit realizes the following functions: when the high-voltage control circuit is in a non-working state, the KZGY signal output by the singlechip is at a high level; when the high-voltage control circuit needs to work, the KZGY signal output by the single chip microcomputer is low-level pulse, and the optical coupler PH01 and the optical coupler PH02 are respectively controlled to be switched on; the high level of tens of milliseconds is produced through opto-coupler PH02 control NE555, and triode BG1 switches on, provides the opto-coupler PH01 with the 9V power, and opto-coupler PH01 switches on, and the 9V power is switched on through R10 control Q1, passes through diode D5 with the high pressure of 100V and exports the GYOUT node, supplies the use of brake clutch control circuit.

As shown in fig. 3, a flow chart of the operation of the loom; the loom is demagnetized first and then the clutch is actuated.

S3, realizing the demagnetization function: when the KZZDQ signal output by the single chip microcomputer is at a high level, the brake is released, meanwhile, the KZXC outputs a low level of 20ms, the relay JK1 is attracted, 24V direct current is instantaneously and reversely applied to a brake coil, the brake is immediately released, and instantaneous demagnetization is realized.

S4, realizing the clutch function: after the demagnetization function is realized, the KZXC signal output by the single chip microcomputer is at a high level, the relay JK1 is released, and 24V direct current is provided to one end of the clutch through a normally closed contact; then, KZLHQ output by the singlechip is low level; meanwhile, the KZGY node outputs low-level pulses (the pulse width of the low-level pulses is adjustable and ranges from 1ms to 180 ms), generates instant high voltage and superposes the instant high voltage to the same end of the clutch; when KZLHQ output by the single chip microcomputer is low level, the optocoupler PH04 and the field effect transistor Q3 are conducted, the clutch is electrified, and due to the fact that high voltage is added instantly, the brake is completely released, and the loom acts immediately.

In a further embodiment, as shown in fig. 6, when the loom needs to jog, during the jog, the KZLHQ signal in this step is at a short-time low level, the duration of the low level is 1ms-500ms, and the jog moving distance is controlled as required, which is convenient for debugging.

In a further embodiment, when the loom needs to operate normally, the KZLHQ signal is kept low until stopped during normal operation.

S5, realizing the brake function: as shown in fig. 5, when the loom needs to stop, the kzlfq signal output by the single chip microcomputer is at a high level, the clutch is de-energized and released, the KZXC signal of the single chip microcomputer is at a high level, the relay JK1 does not act, and 24V direct current is provided to one end of the brake through the normally closed contact; meanwhile, the KZGY node of the singlechip outputs low-level pulses (the pulse width of the low-level pulses can be adjusted within the range of 1ms-180 ms), generates instant high voltage and is also superposed to the same end of the brake; meanwhile, a KZZDQ signal output by the single chip microcomputer is at a low level, the optocoupler PH05 is switched on, the field effect transistor Q2 is switched on, the brake is electrified, and the brake is immediately attracted to brake.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.