Utility model content
The utility model, in order to overcome the deficiencies in the prior art, provides a kind of isolating switch intelligent controller.
To achieve these goals, the utility model provides a kind of isolating switch intelligent controller, comprises input equipment, controller, AC motor drive and tracer.Input equipment comprises combined floodgate button and separating brake button.Controller is electrically connected input equipment, receives the input message of input equipment, and controls signal to accordingly AC motor drive according to this input message output.AC motor drive is electrically connected controller, comprises the first relay, the second relay and the AC power for alternating current machine power supply.The control end of the first relay and the second relay is electrically connected respectively controller, and the control signal that receives controller output changes the sense of current that exports alternating current machine to, drives alternating current machine to realize rotating.Tracer is configured to detect the fault-signal of alternating current machine, comprises current transformer, half-wave rectifier, filter, comparator and reference signal source.Current transformer gathers the output current of alternating current machine, exports the positive input of comparator after half-wave rectifier and filter process to, and the inverting input of comparator is electrically connected reference signal source, and comparator output comparative result is to controller.
In the utility model one embodiment, isolating switch intelligent controller comprises state detector.State detector comprises the first photoelectrical coupler and DC power supply, and in the first photoelectrical coupler, the negative electrode of diode is detection signal input, and anode connects DC power supply, the grounded emitter of triode, and collector electrode connects high level, and collector electrode outputs signal to controller.
In the utility model one embodiment, isolating switch intelligent controller also comprises display, is configured to the status signal of the isolating switch that show state detector detects.
In the utility model one embodiment, controller comprises the first triode and the second triode that single-chip microcomputer and base stage are connected with single-chip microcomputer, and the collector electrode of the first triode and the second triode exports respectively AC motor drive to.
In the utility model one embodiment, reference signal source is adjustable reference signal source.
In the utility model one embodiment, the potential-divider network of adjustable reference signal source for being formed by fixed resistance and variable resistor.
In the utility model one embodiment, the two ends of the first relay and the second relay are parallel with the first diode and the second diode that shield.
In the utility model one embodiment, isolating switch intelligent controller also comprises alarm module, comprises the 3rd triode and alarm, and the 3rd triode is electrically connected controller, when tracer detects after fault-signal, controller output alarm signal is to alarm module.
In sum, the isolating switch intelligent controller that the utility model provides compared with prior art, has the following advantages:
Controller controls signal to according to the signal output of input equipment input the first relay or the second relay that drive alternating current machine accordingly.It is alternating current machine power supply that the closure of the first relay or the second relay will make AC power, and alternating current machine driven wheel drives isolating switch, realizes point bit motion and the co-bit action of isolating switch.Further, for effectively preventing that alternating current machine from breaking down, the output current that tracer detects alternating current machine is in real time set, once alternating current machine breaks down and makes output current excessive, controller is exported control signal immediately, close the first relay and the second relay, alternating current machine quits work.Realize the change of isolating switch state by signal of telecommunication control, compared with traditional manual control, there is automaticity high, the advantage such as more time saving and energy saving and control security is strong.
Further, for the convenient state that shows intuitively isolating switch of energy, prevent repetitive operation, be provided for detecting the state detector of isolating switch and interlocking switch state.State detector by the state feedback of isolating switch and interlocking switch to controller.Controller outputs control signals to AC motor drive after the input signal of this feedback signal and input equipment is compared again, avoids duplicating operation.And the demonstration of isolating switch state makes user can be observed the state of isolating switch outward at switch cubicle, uses convenient.
For above-mentioned and other objects, features and advantages of the present utility model can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Embodiment
Figure 1 shows that the schematic block circuit diagram of the isolating switch intelligent controller that the utility model one embodiment provides.Figure 2 shows that the circuit theory diagrams of the isolating switch intelligent controller middle controller that the utility model one embodiment provides.Figure 3 shows that the circuit theory diagrams of state detector in the isolating switch intelligent controller that the utility model one embodiment provides.Figure 4 shows that the circuit theory diagrams of AC motor drive in the isolating switch intelligent controller that the utility model one embodiment provides.Figure 5 shows that the circuit theory diagrams of tracer in the isolating switch intelligent controller that the utility model one embodiment provides.See also Fig. 1 to Fig. 5.
The isolating switch intelligent controller that the present embodiment provides, comprises input equipment, controller 1, AC motor drive 2 and tracer 3.Input equipment comprises combined floodgate button and separating brake button.Controller 1 is electrically connected input equipment, receives the input message of input equipment, and controls signal to accordingly AC motor drive 2 according to this input message output.AC motor drive 2 is electrically connected controller 1, comprises the first relay K 1, the second relay K 2 and the AC power S1 for alternating current machine power supply.The control end of the first relay K 1 and the second relay K 2 is electrically connected respectively controller 1, and the control signal that reception controller 1 is exported changes the sense of current that exports alternating current machine to, drives alternating current machine to realize rotating.Tracer 3 is configured to detect the fault-signal of alternating current machine, comprises Current Transmit, half-wave rectifier, filter, comparator A and reference signal source.Current transformer gathers the output current of alternating current machine, exports the positive input of comparator A after half-wave rectifier and filter process to, and the inverting input of comparator A is electrically connected reference signal source, and comparator A output comparative result is to controller 1.
Further, isolating switch intelligent controller also comprises state detector 4.State detector 4 comprises the first photoelectrical coupler U1 and DC power supply, in the first photoelectrical coupler U1, the negative electrode of diode is detection signal input, and anode connects DC power supply, the grounded emitter of triode, collector electrode connects high level, and collector electrode outputs signal to controller 1.In the present embodiment, the quantity of state detector 4 has three, wherein the first state detector 41 is for detection of point position signal of isolating switch, and the second state detector 42 is for detection of the co-bit signal of isolating switch, and third state detector 43 is for detection of the co-bit signal of interlocking switch.And from switch, observe for the convenience of the user the state of isolating switch, display is set indicates the state of isolating switch.
In the present embodiment, controller 1 comprises the first triode Q1 and the second triode Q2 that single-chip microcomputer U2 and base stage are connected with single-chip microcomputer, and the collector electrode of the first triode Q1 and the second triode Q2 exports respectively AC motor drive 2 to.In the present embodiment, the model of single-chip microcomputer is ATMEGA8, has 32 pins.Wherein the 10th pin of single-chip microcomputer U2 and separating brake button are electrically connected, and 11 pins of single-chip microcomputer and combined floodgate button are electrically connected.
Particularly: if isolating switch is in closure state, the negative electrode input low level of the diode of the first photoelectrical coupler U1 in the second state detector 42, diode current flow, the second photoelectrical coupler U1 is in running order, and the second state detector 42 output low levels are to controller 1.Accordingly, 41 output high level of the first state detector are to controller 1.Now, controller 1 will be realized control according to external input signal.
Concrete condition is as follows: if user presses combined floodgate button, the 10th pin of controller 1 (detecting separating brake button) detects high level signal, consistent with the signal of telecommunication that the first state detector 41 is exported.And the 11st pin of single-chip microcomputer U2 (detecting combined floodgate button) will detect low level signal, the signal condition that exports single-chip microcomputer with the second state detector 42 to is consistent.Therefore, single-chip microcomputer U3 does not export any signal to AC motor drive 2.
If user presses separating brake button, now the 10th pin of single-chip microcomputer will detect low level signal, and the signal of telecommunication of exporting with the first state detector 41 is contrary.Be high level signal and the 11st pin detects, the signal of telecommunication of exporting with the second state detector 42 is contrary.Now, single-chip microcomputer U2 output high level signal to the first triode Q1, Q1 conducting, the first relay K 1 conducting in AC motor drive 2, alternating current machine rotates, and realizes separating brake.
Identical, when isolating switch is during in opening, the first state detector 41 output low levels are to single-chip microcomputer U2, and the second state detector 42 is exported high level to single-chip microcomputer U2.In the time that combined floodgate button is pressed, the 10th pin of single-chip microcomputer U2 (detecting separating brake button) will detect high level signal, and the signal that exports single-chip microcomputer U2 with the first state detector 41 to is contrary.And the 11st pin (detect combined floodgate button) what detect is low level signal, the signal that exports single-chip microcomputer U2 with the second state detector 42 to is contrary.Controller 1 is exported high level to the second triode Q2, Q2 conducting, and the second relay K 2 conductings in AC motor drive 2, alternating current machine reversion, realizes and closing a floodgate.
In the present embodiment, for preventing that isolating switch from because the phenomenon of stateless signal appears in fault, (as isolating switch is parked in midway) occurring, and arranges input equipment and comprises that reset key further improves the stability of isolating switch.In the present embodiment, reset key is connected with 24 pin of single-chip microcomputer U2.Once reset key is pressed, the 24 pin output reset signals of single-chip microcomputer U2 are to AC motor drive 2.AC motor drive 2 drives alternating current machine to rotate, thereby the isolating switch that makes to be parked in midway returns to gate-dividing state.
In addition, be the security incident that prevents that the reasons such as misoperation from bringing, third state detector 43 be set detect the state of interlocking switch.Only have interlocking switch closure, third state detector 43 output low levels are to single-chip microcomputer U2.Controller 1 just can be exported and control signal to accordingly AC motor drive 2 according to external input signal.Once interlocking switch is opened, third state detector 43 is exported high level to single-chip microcomputer U2, and controller 1 is not exported any signal to AC motor drive 2, effectively prevents various misoperations.
For preventing that alternating current machine from breaking down in the course of the work, tracer 3 output current of detection alternating current machine is in real time set.Current Transmit can export the little electric current of large electric current no-load voltage ratio of alternating current machine output to be made up of two diodes half-wave rectifier, after rectification, after capacitor filtering, export the inverting input of comparator A to, and the positive input of comparator A is inputted by three fixed resistance R3, R4 and R6 and an adjustable reference signal source that variable resistor R5 forms.This adjustable reference signal source can be improved the impact of the mechanical structures such as gear on alternating current machine operating current.In the present embodiment, the model of comparator A is LM358, and the model of Current Transmit is HKCT21EM.But the utility model is not limited in any way this.
Specific works principle: once alternating current machine breaks down (as stall), the output current of alternating current machine is increased, current value after Current Transmit no-load voltage ratio is still in ampere level, its value will be far longer than adjustable reference signal source S3, and now comparator A output low level signal is to single-chip microcomputer U2.Single-chip microcomputer U2 outputs control signals to the first triode Q1 and the second triode Q2 according to this low level signal.The first triode Q1 and the second triode Q2 cut-off, the first relay K 1 and the second relay K 2 are in off-state, and AC power S1 and alternating current machine disconnect, and alternating current machine quits work.Effectively prevent the device damage causing because of electrical fault.
In the present embodiment, isolating switch intelligent controller also comprises alarm module 5, comprises the 3rd triode Q3 and alarm H.The base stage of the 3rd diode Q3 is electrically connected controller 1, and when tracer 3 detects after fault-signal, controller 1 output alarm signal is to alarm module 5.Prompting user alternating current machine breaks down, and improves the overhaul efficiency of equipment.
In the present embodiment, the two ends of the first relay K 1 and the second relay K 2 are parallel with the first diode D1 and the second diode D2 that shield.In the time that being transformed into off-state from attracting state, the first relay K 1 and the second relay K 2 will produce the very high electromotive force of voltage.This electromotive force is easy to puncture the first triode Q1 and the second triode Q2.And the form that increase the first diode D1 and the second diode D2 can be converted to electric current by this high-tension electricity kinetic potential neutralizes.In the present embodiment, the first diode D1 and the second diode D2 are fast recovery diode.The model of the first triode Q1, the second triode Q2 and the 3rd triode Q3 is S9013.But the utility model is not limited in any way this.
In the present embodiment, be the state that better shows isolating switch, isolating switch intelligent controller also comprises display.Display is electrically connected controller 2, the operating state of the equipment such as isolating switch and power supply that state detector 4 detects.
In sum, controller 1 controls signal to according to the signal output of input equipment input the first relay K 1 or the second relay K 2 that drive alternating current machine accordingly.It is alternating current machine power supply that the closure of the first relay K 1 or the second relay K 2 will make AC power, and alternating current machine driven wheel drives isolating switch, realizes point bit motion and the co-bit action of isolating switch.Further, for effectively preventing that alternating current machine from breaking down, the output current that tracer 3 detects alternating current machine is in real time set, once alternating current machine breaks down and makes output current excessive, controller 1 is exported control signal immediately, close the first relay K 1 and the second relay K 2, alternating current machine quits work.Realize the change of isolating switch state by signal of telecommunication control, compared with traditional manual control, there is automaticity high, the advantage such as more time saving and energy saving and control security is strong.
Further, for the convenient state that shows intuitively isolating switch of energy, prevent repetitive operation, be provided for detecting the state detector 4 of isolating switch and interlocking switch state.State detector 4 by the state feedback of isolating switch and interlocking switch to controller 1.Controller 1 outputs control signals to AC motor drive 2 after the input signal of this feedback signal and input equipment is compared again, avoids duplicating operation.And the demonstration of isolating switch state makes user can be observed the state of isolating switch outward at switch cubicle, uses convenient.
Although the utility model is disclosed as above by preferred embodiment; but not in order to limit the utility model; anyly know this skill person; not departing from spirit and scope of the present utility model; can do a little change and retouching, therefore protection range of the present utility model is when being as the criterion depending on claims scope required for protection.