CN111123695B - Interlocking type misoperation prevention control system - Google Patents
Interlocking type misoperation prevention control system Download PDFInfo
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- CN111123695B CN111123695B CN201911258320.6A CN201911258320A CN111123695B CN 111123695 B CN111123695 B CN 111123695B CN 201911258320 A CN201911258320 A CN 201911258320A CN 111123695 B CN111123695 B CN 111123695B
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- switch
- signal
- trigger
- unlocking
- loop
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
Abstract
The invention discloses an interlocking type misoperation prevention control system, which belongs to the technical field of electronic driving switches of low-voltage systems and comprises a trigger control loop and a trigger unlocking loop, wherein the trigger control loop sends out pulse signals for switching-off signals and switching-on signals of a quick switching mechanism; the trigger unlocking circuit sends a negative pulse signal which is used for rapidly switching an unlocking signal of a switching-off circuit and an unlocking signal of a switching-on circuit; when the control system does not need to drive the switch to open or close, the interlocking type misoperation prevention control system can effectively avoid misoperation caused by interference, the interlocking type misoperation prevention control system can effectively avoid misoperation caused by induction of full high level or full low level in a control loop due to interference by mutual exclusion of effective levels of a trigger unlocking signal and a control loop signal, has the trigger unlocking signal, needs a manual operation controller to drive the rapid switch to open or close, and can avoid rapid switch misoperation caused by manual misoperation.
Description
Technical Field
The invention belongs to the technical field of electronic driving switches of low-voltage systems, and particularly relates to an interlocking type misoperation prevention control system.
Background
The quick switch driving power supply of the permanent magnet holding mechanism is arranged in the circuit breaker body, and the electromagnetic interference suffered by the control driving circuit is very severe when the fault current is cut off and the overvoltage is closed, so that the control driving device used as the circuit breaker has high anti-interference performance to ensure the normal action of the circuit breaker, otherwise, the problem of misoperation of the circuit breaker can occur.
Disclosure of Invention
The invention provides an interlocking type misoperation prevention control system which has the characteristics of simple circuit, convenience in driving and capability of avoiding misoperation or operation failure under the condition of strong magnetic field interference.
In order to achieve the purpose, the invention provides the following technical scheme: an interlocking type misoperation prevention control system comprises a trigger control loop and a trigger unlocking loop, wherein the trigger control loop sends out pulse signals for opening and closing signals of a quick switching mechanism;
the trigger unlocking circuit sends a negative pulse signal which is used for rapidly switching an unlocking signal of a switching-off circuit and an unlocking signal of a switching-on circuit;
when the control system does not need to drive the switch to open or close, the switch-on loop unlocking signal and the switch-off loop unlocking signal output a high-level signal, the switch-off signal and the switch-on signal output a low-level signal, the switch-off and switch-on loop unlocking signal and the switch-off and switch-on signal have mutually exclusive effective levels, the fast switch keeps the original state unchanged, when the fast switch needs to control the switch to open, the control system used for driving the fast switch to open the switch controls the state of the output switch-off loop unlocking signal to be pulled down from the high level to the low level, the switch-off signal state is pulled up from the low level to the high level, and the fast switch completes the switch-off action when receiving the low-level switch-off loop unlocking signal and the high-level switch-off signal at the same time; when the switch is switched on, the state of an unlocking signal of the switch-on loop is controlled to be reduced from a high level to a low level, the state of the switch-on signal is controlled to be reduced from the low level to the high level, and the fast switch completes the switch-on action when receiving the unlocking signal of the switch-on loop with the low level and the switch-on signal with the high level at the same time.
Preferably, the normal output signal of the trigger control loop is 0-5V, and a high level signal of 180-220V is sent out when the trigger output is needed.
Preferably, the trigger unlocking loop normally outputs 180-220V, and when the rapid switch is required to be driven to perform switching-on and switching-off actions, the trigger unlocking loop is controlled to send out corresponding switching-on and switching-off trigger unlocking loop signals, and the level signals are output by 0-5V.
Preferably, when the trigger control circuit and the trigger unlocking circuit need to drive the rapid switch to switch on and switch off, the corresponding trigger control circuit and the trigger unlocking circuit effective signals are simultaneously sent out and last for 10 ms.
Preferably, the pulse signal sent by the trigger control circuit is a 10ms 220V pulse signal, and the negative pulse signal sent by the trigger unlocking circuit is a 10ms 220V negative pulse signal.
Compared with the prior art, the invention has the beneficial effects that:
1. the electromagnetic interference on the control driving circuit is very severe when the quick switch cuts off fault heavy current and closes the switch to generate overvoltage in the operation of the power system, and the interlocking type misoperation prevention control system can effectively avoid misoperation caused by interference.
2. According to the invention, by triggering the mutual exclusion of the unlocking signal and the effective level of the control loop signal, the misoperation caused by inducing full high level or full low level in the control loop due to interference can be effectively avoided.
3. The invention has the advantages that the unlocking signal is triggered, the rapid switch on-off switch is driven by a manual operation controller, and the rapid switch misoperation caused by manual misoperation can be avoided.
Drawings
Fig. 1 is a schematic diagram of an internal circuit of an interlock type malfunction prevention control system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides the following technical solutions: an interlocking type misoperation prevention control system comprises a trigger control loop and a trigger unlocking loop, wherein the trigger control loop sends out pulse signals for a switching-off signal and a switching-on signal of a quick switching mechanism;
triggering the unlocking loop to send a negative pulse signal for rapidly switching an unlocking signal of the opening loop and an unlocking signal of the closing loop;
when the control system does not need to drive the switch to open or close, the switch-on loop unlocking signal and the switch-off loop unlocking signal output a high-level signal, the switch-off signal and the switch-on signal output a low-level signal, the switch-off and switch-on loop unlocking signal and the switch-off and switch-on signal have mutually exclusive effective levels, the fast switch keeps the original state unchanged, when the fast switch needs to control the switch to open, the control system used for driving the fast switch to open the switch controls the state of the output switch-off loop unlocking signal to be pulled down from the high level to the low level, the switch-off signal state is pulled up from the low level to the high level, and the fast switch completes the switch-off action when receiving the low-level switch-off loop unlocking signal and the high-level switch-off signal at the same time; when the high-level switch-on control circuit is switched on, the state of an unlocking signal of a switch-on loop is controlled and output to be pulled down to a low level from a high level, the state of a switch-on signal is pulled up to a high level from a low level, the high-level switch-on action is completed when the high-level switch-on control circuit simultaneously receives the unlocking signal of the switch-on loop and the high-level switch-on signal, even if a strong magnetic interference signal is generated in the switch-on control circuit to induce the high level, the high level of the switch-on signal caused by the interference can not drive the high-level switch to act because the switch-on loop unlocking signal is not generated, and when the switch-on is required, the high level of a switch-off control signal caused by the interference can not drive the high-level switch to act.
In the invention, as shown in fig. 1, the output PWM1 of the control chip CPLD is normally high, the output PWM2 is normally low, the secondary output PWMO1 of the optical mos is DC +, PWMO2 is in a floating state under the driving mode, because the fast switch side is connected with DC-through a resistor, PWMO2 is normally low, PWMO1 is used as a brake-off triggering unlocking signal, PWMO2 is used as a triggering control brake-off signal, when the fast switch needs to be driven to perform brake-off operation, the CPLD controls the pin PWM1 to output 10ms low-level pulse, the pin PWM2 outputs 10ms high-level pulse, at this time, the PWO2 can be measured to output 10ms high-level pulse, and the fast switch completes the brake-off operation after receiving the brake-off unlocking signal and the brake-off control signal at the same time.
In the invention, the normal output signal of the trigger control loop is 0-5V, and a high-level signal of 180-220V is sent out when the trigger output is needed.
According to the invention, the trigger unlocking loop normally outputs 180-220V, and when the rapid switch is required to be driven to switch on and switch off, the trigger unlocking loop for switching on and switching off is controlled to output 0-5V level signals.
In the invention, when the trigger control circuit and the trigger unlocking circuit need to drive the rapid switch to switch on and switch off, the corresponding trigger control circuit and the trigger unlocking circuit effective signals are simultaneously sent out and last for 10 ms.
In the invention, the pulse signal sent by the trigger control loop is a 10ms 220V pulse signal, and the negative pulse signal sent by the trigger unlocking loop is a 10ms 220V negative pulse signal.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an interlocking type prevents maloperation control system, includes trigger control circuit and trigger unblock return circuit, its characterized in that: the trigger control loop sends out pulse signals for switching-off signals and switching-on signals of the quick switching mechanism;
the trigger unlocking circuit sends a negative pulse signal which is used for rapidly switching an unlocking signal of a switching-off circuit and an unlocking signal of a switching-on circuit;
when the control system does not need to drive the switch to open or close, the switch-on loop unlocking signal and the switch-off loop unlocking signal output a high-level signal, the switch-off signal and the switch-on signal output a low-level signal, the switch-off and switch-on loop unlocking signal and the switch-off and switch-on signal have mutually exclusive effective levels, the fast switch keeps the original state unchanged, when the fast switch needs to control the switch to open, the control system used for driving the fast switch to open the switch controls the state of the output switch-off loop unlocking signal to be pulled down from the high level to the low level, the switch-off signal state is pulled up from the low level to the high level, and the fast switch completes the switch-off action when receiving the low-level switch-off loop unlocking signal and the high-level switch-off signal at the same time; when the switch is switched on, the state of an unlocking signal of the switch-on loop is controlled to be reduced from a high level to a low level, the state of the switch-on signal is controlled to be reduced from the low level to the high level, and the fast switch completes the switch-on action when receiving the unlocking signal of the switch-on loop with the low level and the switch-on signal with the high level at the same time.
2. An interlocking type malfunction prevention control system according to claim 1, characterized in that: the normal output signal of the trigger control loop is 0-5V, and a 180-220V high-level signal is sent out when the trigger output is needed.
3. An interlocking type malfunction prevention control system according to claim 1, characterized in that: the trigger unlocking loop normally outputs 180-220V, and when the rapid switch is required to be driven to perform switching-on and switching-off actions, the trigger unlocking loop is controlled to send out corresponding switching-on and switching-off trigger unlocking loop signals, and the trigger unlocking loop outputs 0-5V level signals.
4. An interlocking type malfunction prevention control system according to claim 1, characterized in that: when the trigger control circuit and the trigger unlocking circuit need to drive the rapid switch to switch on and switch off, the corresponding effective signals of the trigger control circuit and the trigger unlocking circuit are simultaneously sent out and last for 10 ms.
5. An interlocking type malfunction prevention control system according to claim 1, characterized in that: the trigger control loop sends out a pulse signal of 10ms 220V, and the trigger unlocking loop sends out a negative pulse signal of 10ms 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258320.6A CN111123695B (en) | 2019-12-10 | 2019-12-10 | Interlocking type misoperation prevention control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258320.6A CN111123695B (en) | 2019-12-10 | 2019-12-10 | Interlocking type misoperation prevention control system |
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| CN111123695A CN111123695A (en) | 2020-05-08 |
| CN111123695B true CN111123695B (en) | 2022-04-19 |
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| CN209401519U (en) * | 2019-04-10 | 2019-09-17 | 常州电子研究所有限公司 | Permanent magnetism coil drive full bridge driving circuit |
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2019
- 2019-12-10 CN CN201911258320.6A patent/CN111123695B/en active Active
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| JP2009171760A (en) * | 2008-01-17 | 2009-07-30 | Fuji Electric Systems Co Ltd | Uninterruptible power supply |
| CN101826719A (en) * | 2010-05-29 | 2010-09-08 | 珠海欧力配电自动化系统有限公司 | Trip-proof lockout microcomputer protection system |
| CN103682999A (en) * | 2013-11-05 | 2014-03-26 | 株洲南车时代电气股份有限公司 | Switch cabinet opening locking state distinguishing system |
| WO2015103883A1 (en) * | 2014-01-13 | 2015-07-16 | 江苏现代电力科技股份有限公司 | Integrated high-voltage alternating-current circuit breaker controller |
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| CN111123695A (en) | 2020-05-08 |
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