CN105159058A - Pilot circuit control method, pilot circuit controller and pilot circuit - Google Patents
Pilot circuit control method, pilot circuit controller and pilot circuit Download PDFInfo
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- CN105159058A CN105159058A CN201510448154.1A CN201510448154A CN105159058A CN 105159058 A CN105159058 A CN 105159058A CN 201510448154 A CN201510448154 A CN 201510448154A CN 105159058 A CN105159058 A CN 105159058A
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Abstract
The embodiments of the invention disclose a pilot circuit control method, a pilot circuit controller and a pilot circuit. The pilot circuit control method comprises the following steps: acquiring a current value of a DC relay; determining whether the current value is within a preset current value scope, wherein the preset current value scope comprises a closed current value scope and a broken current value scope; if the current value is within the closed current value scope, determining that the lasting time of the current value in the closed current value scope is greater than a preset time value; if so, driving a power supply switch to be switched on; and if the current value is within the broken current value scope, driving the power supply switch to be broken, so that false triggering caused by external factors to the power supply switch is avoided, safety hidden risks are reduced, and personnel and normal equipment production are guaranteed.
Description
Technical field
The present invention relates to precursor circuit technical field, more particularly, relate to a kind of precursor circuit control method, precursor circuit controller and precursor circuit.
Background technology
Precursor circuit is a kind of far-end control circuit, is mainly used in the prime power switch of remote on-off workplace extractive equipment, realizes far end supply management, guarantees the safe operation of personnel and equipment.But in the course of the work, because voltage ripple of power network, DC relay coil magnetic circuit are non-linear, electron device loose contact, operating personnel the reason such as to touch, and can carry out false triggering to power switch, impact is normally produced by mistake.
Therefore, how to avoid extraneous factor to the false triggering of power switch, reduce potential safety hazard, it is the problem needing now to solve that support personnel, equipment are normally produced.
Summary of the invention
The object of the present invention is to provide a kind of precursor circuit control method, precursor circuit controller and precursor circuit, to avoid extraneous factor to the false triggering of power switch, reduce potential safety hazard, support personnel, equipment are normally produced.
For achieving the above object, following technical scheme is embodiments provided:
A kind of precursor circuit control method, comprising:
Gather the current value of DC relay;
Judge described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope;
If described current value is within the scope of described closed electrical flow valuve, then judge whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, power switch is then driven to close;
If described current value is within the scope of described turn-off current value, then power switch is driven to disconnect.
Preferably, before the current value of described collection DC relay, also comprise:
Gather the magnitude of voltage of electrical network;
According to described magnitude of voltage and loop resistance value counter circuit current value;
According to the electric current adjustment parameter under different mode, described loop current value is corrected, obtains described pre-set current value scope.
Preferably, if described current value is within the scope of described closed electrical flow valuve, then, after driving power switch closes, also comprise:
Whether detect current value is maintain current value; If not, then control accident warning device to give a warning.
Preferably, if described current value is within the scope of described turn-off current value, then, after driving power switch disconnection, also comprise:
Detect current value and whether be still off current value; If so, then control accident warning device to give a warning.
A kind of precursor circuit controller, comprising:
Current acquisition module, for gathering the current value of DC relay;
The electric current judge module be connected with described current acquisition module, for judging described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope;
If when described electric current judge module judges that described current value is within the scope of described closed electrical flow valuve, triggered time judge module; If when described electric current judge module judges that described current value is within the scope of described turn-off current value, then trigger the first driver module
The described time judgment module be connected with described electric current judge module, for judging whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, the second driver module is then driven;
The first driver module be connected with described electric current judge module, disconnects for driving power switch;
The second driver module be connected with described time judgment module, closes for driving power switch.
Preferably, described precursor circuit controller also comprises:
Voltage acquisition module, for gathering the magnitude of voltage of electrical network;
The computing module be connected with described voltage acquisition module, for according to described magnitude of voltage and loop resistance value counter circuit current value;
The correction module be connected with described electric current judge module with described computing module, for according to the electric current adjustment parameter under different mode, corrects described loop current value, obtains described pre-set current value scope.
A kind of precursor circuit, comprises above-mentioned precursor circuit controller, also comprises:
The power switch be connected with described pilot controller, the transformer be connected with described pilot controller, the DC relay be connected with described pilot controller;
The start button be connected with described DC relay, the build-out resistor in parallel with described start button, the stop button be all connected with described build-out resistor with described start button;
The half-wave rectification diode be connected with described stop button.
Preferably, described power switch also comprises accident warning device.
Known by above scheme, a kind of precursor circuit control method, precursor circuit controller and precursor circuit that the embodiment of the present invention provides, comprise the current value gathering DC relay; Judge described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope; If described current value is within the scope of described closed electrical flow valuve, then judge whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, power switch is then driven to close; If described current value is within the scope of described turn-off current value, then drive power switch to disconnect, avoid extraneous factor to the false triggering of power switch, reduce potential safety hazard, support personnel, equipment are normally produced.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of precursor circuit control method process flow diagram disclosed in the embodiment of the present invention;
Fig. 2 is a kind of precursor circuit controller schematic diagram disclosed in the embodiment of the present invention;
Fig. 3 is a kind of precursor circuit schematic diagram disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of precursor circuit control method, precursor circuit controller and precursor circuit, to avoid extraneous factor to the false triggering of power switch, reduce potential safety hazard, support personnel, equipment are normally produced.
See Fig. 1, a kind of precursor circuit control method process flow diagram that the embodiment of the present invention provides, comprising:
The current value of S101, collection DC relay;
S102, judge described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope;
Concrete, the current value by gathering DC relay in the present embodiment, not only can judge that current value belongs to closed electrical flow valuve scope or turn-off current value scope, the change of the current value height that described current value specifically causes due to what factor can also be judged.
Such as: when described current value is within the scope of operating current, even if the current value range of relay adhesive power switch, then Remote feeding switch is driven to be converted to closure state from off-state;
When described current value is in maintenance range of current, even if after relay adhesive, after start button is released, the current value range remained closed, then drive Remote feeding switch to be in closure state;
When described current value is within the scope of short-circuit current, namely in start button one end, because non-artificial factor causes start button end to be shorted, then drive Remote feeding switch to disconnect, and the information be shorted is shown in terminal;
When described current value is within the scope of breaking current, even if after relay adhesive, stop button is pressed, then Remote feeding switch is driven to disconnect;
When described current value fluctuates within the scope of the curent change that causes in normal voltage, then do not process, state of remaining stationary.
If described current value is within the scope of described closed electrical flow valuve, then performs S103, judge whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value;
If so, then perform S104, drive power switch to close;
If not, then continue to perform S101.
Concrete, owing to considering the false triggering due to personnel, cause start button by situation about pressing by mistake, setting only has when current value being detected, the time continued within the scope of closed electrical flow valuve is when being greater than preset time value, power switch just can be driven to close, improve the security of producing, ensure field personnel's safety.
If described current value is within the scope of described turn-off current value, then performs S105, drive power switch to disconnect.
Concrete, when far-end stop button be pressed, precursor circuit open circuit time, the electric current that precursor circuit controller detects is zero, and now precursor circuit controller disconnects power switch automatically, and gives accident warning device failure message, allows it give a warning; Cause power switch to disconnect if be pressed by stop button, then ignore; If cause precursor circuit to disconnect by non-artificial factor, then staff can be warned, to investigate fault in time.
The precursor circuit controller carrying out designing based on voltage auxiliary detection and curent change delayed startup principle that the present embodiment provides can distinguish remote action state easily, eliminate voltage ripple of power network to the impact of pilot circuit electric current, avoid device quality, touch by mistake, the misoperation of pilot circuit that line fault causes and refused action, achieve the normal operation of equipment, be conducive to maintaining carrying out smoothly of production, improve production security and ensure field personnel's safety.
A kind of precursor circuit control method that the embodiment of the present invention provides, comprises the current value gathering DC relay; Judge described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope; If described current value is within the scope of described closed electrical flow valuve, then judge whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, power switch is then driven to close; If described current value is within the scope of described turn-off current value, then drive power switch to disconnect, avoid extraneous factor to the false triggering of power switch, reduce potential safety hazard, support personnel, equipment are normally produced.
Preferably, in another embodiment of the invention, before the current value of described collection DC relay, also comprise:
Gather the magnitude of voltage of electrical network;
According to described magnitude of voltage and loop resistance value counter circuit current value;
According to the electric current adjustment parameter under different mode, described loop current value is corrected, obtains described pre-set current value scope.
Concrete, length and the material of described loop resistance and connecting line and cable are relevant, and before the use, the resistance of its loop resistance is determined.
Concrete, when precursor circuit is just connected, when start button is not pressed, precursor circuit controller is according to the coupling of line voltage at that time pilot circuit parameter, according to the magnitude of voltage and the loop resistance value counter circuit current value that gather electrical network, and according to the electric current adjustment parameter under different mode, described loop current value is corrected, and preserves.
Concrete, the magnitude of voltage of the detection of grid that precursor circuit controller can be real-time, if when electrical network change comparison in difference greatly, according to the magnitude of voltage of the electrical network of Real-time Collection, pre-set current value scope can be adjusted.
Preferably, in another embodiment of the invention whether, if described current value is within the scope of described closed electrical flow valuve, then after driving power switch closes, also comprising detection current value is maintain current value;
If detecting current value is not maintain current value, then controls accident warning device and give a warning;
Whether concrete, whether, after driving power switch is closed, is maintain current value, after judging that start button is pressed, is released by detecting current value, namely build-out resistor has not by place in circuit again; If be not released after start button is pressed, then can give a warning by controlling accident warning device, thus warning staff.
If described current value is within the scope of described turn-off current value, then after driving power switch disconnection, also comprise detection current value and whether be still off current value;
If detect current value to be still turn-off current value, then control accident warning device and give a warning.
Concrete, after driving power switch disconnects, whether whether be still off current value by detecting current value, after judging that stop button is pressed, be released, namely whether precursor circuit recloses; If be not released after stop button is pressed, then can give a warning by controlling accident warning device, thus warning staff.
Concrete, after the action of driving power switch, by detecting current value, can judge whether driving switch performs relevant action; If described driving switch does not perform relevant action, can give a warning and remind staff by driving warning device, make staff can be timely the duty of equipment, to investigate fault in time, increase the security of staff.
See Fig. 2, a kind of precursor circuit controller schematic diagram that the embodiment of the present invention provides, comprising:
Current acquisition module 110, for gathering the current value of DC relay;
Concrete, the precursor circuit controller in the present embodiment can the current value of Real-time Collection DC relay.
The electric current judge module 120 be connected with described current acquisition module 110, for judging described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope;
If when described electric current judge module 120 judges that described current value is within the scope of described closed electrical flow valuve, triggered time judge module 130; If when described electric current judge module 120 judges that described current value is within the scope of described turn-off current value, then trigger the first driver module 140
The described time judgment module 130 be connected with described electric current judge module 120, for judging whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, the second driver module 150 is then driven;
The first driver module 140 be connected with described electric current judge module 120, disconnects for driving power switch;
The second driver module 150 be connected with described time judgment module 130, closes for driving power switch.
A kind of precursor circuit controller that the embodiment of the present invention provides, comprises the current value gathering DC relay; Judge described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope; If described current value is within the scope of described closed electrical flow valuve, then judge whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, power switch is then driven to close; If described current value is within the scope of described turn-off current value, then drive power switch to disconnect, avoid extraneous factor to the false triggering of power switch, reduce potential safety hazard, support personnel, equipment are normally produced.
Preferably, in another embodiment of the invention, precursor circuit controller also comprises:
Voltage acquisition module, for gathering the magnitude of voltage of electrical network;
The computing module be connected with described voltage acquisition module, for according to described magnitude of voltage and loop resistance value counter circuit current value;
The correction module be connected with described electric current judge module with described computing module, for according to the electric current adjustment parameter under different mode, corrects described loop current value, obtains described pre-set current value scope.
The precursor circuit Controller gain variations theory that the present embodiment provides is advanced, scheme is simple and easy to copy, not only easily can access the control system of the autonomous Design such as single-chip microcomputer, DSP exploitation, also the control system that PLC makes can be accessed easily, contribute to the unification realizing many power switch leading control circuits, should be widely promoted and application.
See Fig. 3, a kind of precursor circuit schematic diagram that the embodiment of the present invention provides, comprises the precursor circuit controller 100 in above-described embodiment, also comprises:
The power switch 200 be connected with described pilot controller 100, the transformer 400 be connected with described pilot controller 100, the DC relay 300 be connected with described pilot controller 100;
The start button 600 be connected with described DC relay 300, the build-out resistor 500 in parallel with described start button 600, the stop button 700 be all connected with described build-out resistor 500 with described start button 600;
The half-wave rectification diode 800 be connected with described stop button 700.
Preferably, in another embodiment of the invention, described power switch 200 arranges control accident warning device.
Described accident warning device is specifically as follows the display section providing warning picture, such as failure screen; Also can give a warning the loudspeaker of sound, thus can better warn staff.
A kind of precursor circuit that the embodiment of the present invention provides, comprises the current value gathering DC relay; Judge described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope; If described current value is within the scope of described closed electrical flow valuve, then judge whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, power switch is then driven to close; If described current value is within the scope of described turn-off current value, then drive power switch to disconnect, avoid extraneous factor to the false triggering of power switch, reduce potential safety hazard, support personnel, equipment are normally produced.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a precursor circuit control method, is characterized in that, comprising:
Gather the current value of DC relay;
Judge described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope;
If described current value is within the scope of described closed electrical flow valuve, then judge whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, power switch is then driven to close;
If described current value is within the scope of described turn-off current value, then power switch is driven to disconnect.
2. precursor circuit control method according to claim 1, is characterized in that, before the current value of described collection DC relay, also comprises:
Gather the magnitude of voltage of electrical network;
According to described magnitude of voltage and loop resistance value counter circuit current value;
According to the electric current adjustment parameter under different mode, described loop current value is corrected, obtains described pre-set current value scope.
3. precursor circuit control method according to claim 1, is characterized in that, if described current value is within the scope of described closed electrical flow valuve, then, after driving power switch closes, also comprises:
Whether detect current value is maintain current value; If not, then control accident warning device to give a warning.
4. precursor circuit control method according to claim 1, is characterized in that, if described current value is within the scope of described turn-off current value, then, after driving power switch disconnection, also comprises:
Detect current value and whether be still off current value; If so, then control accident warning device to give a warning.
5. a precursor circuit controller, is characterized in that, comprising:
Current acquisition module, for gathering the current value of DC relay;
The electric current judge module be connected with described current acquisition module, for judging described current value whether within the scope of pre-set current value; Wherein, described pre-set current value scope comprises closed electrical flow valuve scope and turn-off current value scope;
If when described electric current judge module judges that described current value is within the scope of described closed electrical flow valuve, triggered time judge module; If when described electric current judge module judges that described current value is within the scope of described turn-off current value, then trigger the first driver module
The described time judgment module be connected with described electric current judge module, for judging whether the time that described current value continues within the scope of described closed electrical flow valuve is greater than preset time value; If so, the second driver module is then driven;
The first driver module be connected with described electric current judge module, disconnects for driving power switch;
The second driver module be connected with described time judgment module, closes for driving power switch.
6. precursor circuit controller according to claim 5, is characterized in that, also comprise:
Voltage acquisition module, for gathering the magnitude of voltage of electrical network;
The computing module be connected with described voltage acquisition module, for according to described magnitude of voltage and loop resistance value counter circuit current value;
The correction module be connected with described electric current judge module with described computing module, for according to the electric current adjustment parameter under different mode, corrects described loop current value, obtains described pre-set current value scope.
7. a precursor circuit, is characterized in that, comprises the precursor circuit controller as described in claim 5 to 6 any one, also comprises:
The power switch be connected with described pilot controller, the transformer be connected with described pilot controller, the DC relay be connected with described pilot controller;
The start button be connected with described DC relay, the build-out resistor in parallel with described start button, the stop button be all connected with described build-out resistor with described start button;
The half-wave rectification diode be connected with described stop button.
8. precursor circuit according to claim 7, is characterized in that, described power switch also comprises accident warning device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510448154.1A CN105159058B (en) | 2015-07-27 | 2015-07-27 | A kind of precursor circuit control method, precursor circuit controller and precursor circuit |
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| CN201510448154.1A CN105159058B (en) | 2015-07-27 | 2015-07-27 | A kind of precursor circuit control method, precursor circuit controller and precursor circuit |
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| CN105159058A true CN105159058A (en) | 2015-12-16 |
| CN105159058B CN105159058B (en) | 2019-03-19 |
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