CN107380209A - For controlling the detection circuit of goat - Google Patents
For controlling the detection circuit of goat Download PDFInfo
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- CN107380209A CN107380209A CN201710681570.5A CN201710681570A CN107380209A CN 107380209 A CN107380209 A CN 107380209A CN 201710681570 A CN201710681570 A CN 201710681570A CN 107380209 A CN107380209 A CN 107380209A
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- 238000001514 detection method Methods 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 claims abstract description 141
- 238000012360 testing method Methods 0.000 claims abstract description 31
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention provides the detection circuit for controlling goat, belong to railroad track field, controller is provided with detection circuit, controller is provided with the first drive end, second drive end, first test side, second test side, first back production end and the second back production end, controller includes direction handover module, first back production circuit, second back production circuit, the input of direction handover module is connected with the first drive end, second drive end, output end is connected with the first back production circuit, second back production circuit, the input of first back production circuit is connected with the first test side, output end is connected with goat, first back production end.The drive signal exported by controller to the first drive end, the second drive end carries out back inspection respectively, corresponding back production signal is collected according to the first back production end and the second back production end whether there is, and then may determine that whether signal system has output failure, it ensure that output safety.
Description
Technical field
The invention belongs to railroad track field, is more particularly to used for the detection circuit for controlling goat.
Background technology
Goat be for a kind of important executing agency in track traffic, for changing locking point tongue or heart rail,
Represent the position and state of point tongue or heart rail in supervision interlocking area.The mode of operation of goat is divided into electronic and manual two kinds
Mode, by track switch controller be uniformly controlled using electronic mode when equipment is normal and realize that the fixed of goat, antiposition drive；
When power failure or goat failure and corresponding track circuit failure, track switch is changed by hand mode.
After goat rotate in place, the electric current on its center line (N lines) can increase rapidly because of the stall of motor, control
Device processed cuts off driving output because collecting the larger current on center line (N lines) so that and goat stops operating, but at present
Driving output not to goat does not carry out back inspection, therefore not can determine that whether driving output has normally exported, circuit
Working condition can not in-service monitoring controller may be oriented to hazardous side because of the adhesion fault of device.
The content of the invention
In order to solve shortcoming and defect present in prior art, the invention provides pass through driving of the controller to output
Signal carry out back inspection, so as to judge whether signal system has output failure, ensure that Safety output be used for control goat
Detect circuit.
In order to reach above-mentioned technical purpose, the invention provides the detection circuit for controlling goat, in detection circuit
Controller is provided with, controller is provided with the first drive end, the second drive end, the first test side, the second test side, the first back production end
With the second back production end, the controller includes：
Direction handover module, the first back production circuit, the second back production circuit, the input of direction handover module are connected with first
Drive end and the second drive end, the output end of direction handover module are connected with the first back production circuit and the second back production circuit, three-phase
L2, L3 line end of four-wire system power supply connect the feeder ear of goat, L1, N line of three-phase four-wire system power supply through direction handover module
The feeder ear of end connection goat；
The input of first back production circuit is connected with the first test side, and the output end of the first back production circuit is connected with goat
With the first back production end, the input of the second back production circuit is connected with the second test side, and the output end of the second back production circuit is connected with
Goat and the second back production end.
Optionally, first drive end includes the first drive end A, the first drive end B, and the second drive end includes second and driven
Moved end A, the second drive end B, controller also include the 3rd back production end and IGCT.
Optionally, the first back production circuit includes：
The relay RLY1 and relay RLY2 to be connected with relay RLY1；
Relay RLY1 coil both ends connect the first drive end A and B, relay RLY1 SRE RLY2 respectively,
Relay RLY1 is provided with normally-closed contact K1, and relay RLY2 is provided with normally-closed contact K2, and the first test side is through normally-closed contact K1, normally closed
Contact K2 the first back production of connection end.
Optionally, the second back production circuit includes：
Normally closed optocoupler U10 is provided between the second drive end A and the second drive end B, normally closed optocoupler U10 first end is through electricity
R51 the second drive ends of connection A, normally closed optocoupler U10 first end are hindered through resistance R49 the second drive ends of connection B, normally closed optocoupler U10
The second end connect the second drive end B, the normally closed optocoupler U10 back production end of three-terminal link the 4th, normally closed optocoupler U10 the 4th end
Connect the second test side.
Optionally, the detection circuit also includes：
The self-locking electricity being used for IGCT input drive signal DO2 is provided between the second drive end A, the second drive end B
Road, the input of latching circuit, which is provided with, is used for having the cut-out electricity that driving latching circuit is cut off larger current on N lines because collecting
Road, the output end of latching circuit are connected with IGCT, cut off and three-phase four-wire system power supply is connected with the input of circuit.
Optionally, the cut-out circuit includes：
Abnormal current detection circuit, be connected to abnormal current detection circuit output end transformer, be connected to transformer
Output end rectifier and the triode Q1 that is connected in the output end of rectifier, abnormal current detect the input of circuit
Three-phase four-wire system power supply is connected with end, the output end of abnormal current detection circuit connects the input of transformer, transformer
Output end connects the input of rectifier, the output end connecting triode Q1 of rectifier base stage, and triode Q1 colelctor electrode connects
It is connected to the input of lock circuit, triode Q1 grounded emitter.
Optionally, it is characterised in that the latching circuit includes：
Normally opened optocoupler U2 connected normally closed optocoupler U1 and normally closed optocoupler U1, normally closed optocoupler U1 first end connection feeder ear
VCC, normally closed optocoupler U1 the second end connecting triode Q1 colelctor electrode, the of normally closed optocoupler U1 the 5th end and normally closed optocoupler U1
Four ends, the 6th end are connected, and normally closed optocoupler U1 the 5th end connects normally opened optocoupler U2 first end, and normally closed optocoupler U1 the 5th end connects
The control terminal of IGCT is connect, normally opened optocoupler U2 first end, the second end connect the second drive end B, normally opened optocoupler U2 the 3rd end
Connect normally closed optocoupler U1 the 6th end, the second drive end A of normally opened optocoupler U2 the 4th end connection controller.
Optionally, described be provided with the second drive end A, the second drive end B is used to avoid cutting off circuit because erroneous judgement and cutting
The delay circuit of disconnected latching circuit.
Optionally, the delay circuit includes：
The triode Q3 and normally closed optocoupler U5 being connected with triode Q3, triode Q3 base stage, emitter stage connect respectively
Second drive end A, the second drive end B, are provided with RC circuits between triode Q3 base stage and emitter stage, and the of normally closed optocoupler U5
One end connecting triode Q3 base stage, normally closed optocoupler U5 the second end connecting triode Q3 colelctor electrode, the of normally closed optocoupler U5
Five ends are connected with normally closed optocoupler U5 the 4th end, the 6th end, normally closed optocoupler U5 the 5th end connection latching circuit.
Optionally, the RC circuits include one or more one electric capacity of resistant series, or including one or more resistance
It is connected in parallel with a capacitor, or one or more resistance strings are connected in parallel with a capacitor.
The beneficial effect that technical scheme provided by the invention is brought is：By controller to the first drive end, the second driving
The drive signal of end output carries out back inspection respectively, is whether there is according to the first back production end and the second back production end and collects corresponding return
The number of accepting and believing, and then may determine that whether signal system has output failure, it ensure that output safety.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the detection circuit rotated forward provided by the present invention for control goat；
Fig. 2 is the structural representation provided by the present invention for the detection circuit of control goat reversion；
Fig. 3 is reference signal PHR provided by the invention and detection signal PH1 phase relation；
Fig. 4 is reference signal PHR provided by the invention and detection signal PH2 phase relation；
Fig. 5 is drive signal DO1 provided by the invention the first back production circuit diagram；
Fig. 6 is drive signal DO2 provided by the invention the second back production circuit diagram；
Fig. 7 is drive signal DO2 provided by the invention latching circuit figure；
Fig. 8 is drive signal DO2 provided by the invention delay circuit figure.
Embodiment
To make the structure of the present invention and advantage clearer, the structure of the present invention is made further below in conjunction with accompanying drawing
Description.
Embodiment one
The embodiment of the present invention proposes the detection circuit for controlling goat, is provided with controller on detection circuit, controls
Device processed is provided with the first drive end, the second drive end, the first test side, the second test side, the first back production end and the second back production end, institute
Stating controller includes：
Direction handover module, the first back production circuit, the second back production circuit, the input of direction handover module are connected with first
Drive end and the second drive end, the output end of direction handover module are connected with the first back production circuit and the second back production circuit, three-phase
L2, L3 line end of four-wire system power supply connect the feeder ear of goat, L1, N line of three-phase four-wire system power supply through direction handover module
The feeder ear of end connection goat；
The input of first back production circuit is connected with the first test side, and the output end of the first back production circuit is connected with goat
With the first back production end, the input of the second back production circuit is connected with the second test side, and the output end of the second back production circuit is connected with
Goat and the second back production end.
In force, controller being provided with detection circuit, controller includes direction handover module, back production circuit, wherein, turn
The feeder ear of rut machine includes the first feeder ear, the second feeder ear, the 3rd feeder ear and the 4th feeder ear, three-phase four-wire system power supply
L1, N line end connect the first feeder ear of goat, the 4th feeder ear respectively, when goat is in rotating forward state, then three-phase four
L2, L3 line end of line power supply connect the second feeder ear of goat goat, the 3rd feeder ear through direction handover module respectively,
When goat is in inverted status, then L2, L3 line end of three-phase four-wire system power supply connect turn-out track respectively through direction handover module
The 3rd feeder ear, the second feeder ear of machine goat.
When simultaneously drive signal DO1 inputs than drive signal DO2 elder generations input direction handover module or drive signal DO1, DO2
During the handover module of direction, then three-phase four-wire system L2, L3 line ends through direction handover module connect goat the second feeder ear, the 3rd
Feeder ear so that goat rotates forward；When drive signal DO2 is than drive signal DO1 elder generations input direction handover module, then direction is cut
Change the mold the order of L2, L3 line end connection goat of block switching three-phase four-wire system power supply so that L2, L3 of three-phase four-wire system power supply
Line end connects the 3rd feeder ear, the second feeder ear of goat through direction handover module, then causes goat reversion.Direction switches
Module realizes that L2/L3 phase sequences switch according to drive signal DO1, DO2 successively input, so as to realize goat forward or reverse.
When drive signal DO1, DO2 output are effective, meanwhile, controller internal circuitry senses entry to drive signal DO1, DO2
Back production signal DI3, DI4, and then determine goat be in rotary state, wherein, controller internal circuitry senses entry to drive letter
Number DO1 back production signal DI3 and drive signal DO2 back production signal DI4 specific steps are described in detail below, herein
Repeat no more.
As shown in figure 1, when goat rotates forward completion, first test side the first back production circuit sends to goat and detected
Signal PH1, second test side the second back production circuit send detection signal PH2 to goat, meanwhile, the first back production end first
Back production circuit carries out back production to detection signal PH1, and will collect back production signal DI1 and transmit to controller, the second back production end warp
Second back production circuit carries out back production to detection signal PH2, and will collect back production signal DI2 and transmit to controller.
As shown in Fig. 2 when goat inverts completion, first test side the first back production circuit sends to goat and detected
Signal PH1, second test side the second back production circuit send detection signal PH2 to goat, meanwhile, the first back production end first
Back production circuit carries out back production to detection signal PH2, and will collect back production signal DI2 and transmit to controller, and the second back production end will
Back production is carried out to detection signal PH1 through the second back production circuit, and back production signal DI1 will be collected and transmitted to controller.Therefore, control
The back production signal type that device processed collects according to the first back production end, the second back production end, determines the location of goat.
When drive signal DO1, DO2 output are effective, then illustrate that goat is in rotary state, controller passes through first time
Adopt end, the second back production end does not all collect corresponding back production signal, then illustrate that signal system is in normal condition, conversely,
Controller collects corresponding back production signal by one of back production end or two back production ends all each collect relatively
The back production signal answered, then illustrate that signal system is in malfunction, just by signal system failure to the safe side side.
When there is no output drive signal DO1, DO2, then illustrate that goat is in halted state, controller passes through first time
Adopt end, the second back production end collects corresponding back production signal respectively, illustrates that goat is in normal condition, controller is according to adopting
The two back production signal types collected, it may be determined that the location of goat.Conversely, two back production ends on controller are not to having
Corresponding back production signal or collection other signals are collected, then illustrate that signal system is in malfunction, just by signal system
System failure to the safe side side.
Further, since external circuit interference or failure cause back production signal inaccurate, and then cause position detection inaccurate,
Possibly even make it that track is in the hole because goat rotates not in place, therefore controller only collects back production signal
Frequency and phase just can determine that detection is effective, once the back production signal that controller collects is inaccurate, will all make signal system
System failure to the safe side side.As shown in figure 3, detection signal PH1 frequency is set into 15Hz, dutycycle is set to 25% pulse signal,
And by being all 15Hz with frequency, the reference signal PHR that dutycycle is 50% relatively makes a distinction, and processor is with PHR signals
Trailing edge be synchronous sampling point, carry out shifted samples with 8 overtones bands of PHR frequencies.
As shown in figure 4, detection signal PH2 frequency is set into 15Hz, dutycycle is set to 25% pulse signal, wherein,
Phase between detection signal PH1, PH2 differs 180 °, will be by being all 15Hz with frequency, and dutycycle is 50% reference signal
PHR is relatively made a distinction, and processor is entered still using the trailing edge of PHR signals as synchronous sampling point with 8 overtones bands of PHR frequencies
Row shifted samples.
Represent it is PH1 signals when adopting 0x60, then represent it is PH2 signals when adopting 0x06.Make by using PH1/PH2
There are higher safety grades than common low and high level for detection signal, and then improve the security of signal system.
Optionally, the first drive end includes the first drive end A, the first drive end B, and the second drive end includes the second drive end
A, the second drive end B, controller also include the 3rd back production end and IGCT.
In force, the first back production circuit is subsequently mentioned to for convenience of description, therefore the first drive end is divided into first
Drive end A, the first drive end B, and the first drive end A, the first drive end B are respectively the positive and negative terminal of the first drive end.
The second back production circuit is subsequently mentioned to for convenience of description, therefore the second drive end is divided into the second drive end A,
Two drive end B, the second drive end A, the second drive end B are respectively the positive and negative terminal of the second drive end.
Wherein, in order to which the second back production circuit drawn hereafter is mentioned to the 3rd back production end, and latching circuit is mentioned to crystalline substance
Brake tube, therefore controller also includes the 3rd back production end and IGCT.
Optionally, the first back production circuit includes：
The relay RLY1 and relay RLY2 to be connected with relay RLY1；
Relay RLY1 coil both ends connect the first drive end A and B, relay RLY1 SRE RLY2 respectively,
Relay RLY1 is provided with normally-closed contact K1, and relay RLY2 is provided with normally-closed contact K2, and the first test side is through normally-closed contact K1, normally closed
Contact K2 the first back production of connection end.
In force, as shown in figure 5, in circuit, A-DO1, B-DO1 refer to from the first drive end A, the first drive end B respectively
The drive signal DO1 of output, the first back production circuit are to be connected by normally-closed contact K1 with normally-closed contact K2 realization.When output is driven
When dynamic signal DO1 is effective, then relay RLY1, RLY2 is powered, and normally-closed contact K1, K2 disconnect, then the inspection of the first test side output
Surveying signal PH2 can not be transmitted to controller by the 3rd back production end；As no output drive signal DO1, then relay RLY1,
RLY2 is powered off, and normally-closed contact K1, K2 closure, forms the first back production circuit, and the 3rd back production end carries out back production to detection signal PH2,
And the back production signal DI3 collected is transmitted to controller through the 3rd back production end.
Therefore, controller carries out back production through relay RLY1, RLY2 to detection signal PH2, is whether there is according to the first back production end
Collect the output state that back production signal DI3 determines drive signal DO1.
Optionally, the second back production circuit includes：
Normally closed optocoupler U10 is provided between the second drive end A and the second drive end B, normally closed optocoupler U10 first end is through electricity
R51 the second drive ends of connection A, normally closed optocoupler U10 first end are hindered through resistance R49 the second drive ends of connection B, normally closed optocoupler U10
The second end connect the second drive end B, the normally closed optocoupler U10 back production end of three-terminal link the 4th, normally closed optocoupler U10 the 4th end
Connect the second test side.
In force, as shown in fig. 6, in circuit, A-DO2, B-DO2 refer to defeated from the second drive end A, the second drive end respectively
The drive signal DO2 gone out, as no output drive signal DO2, normally closed optocoupler U10 first end, the second end must not electricity, then the
Three ends, the conducting of the 4th end so that controller sends out detection signal PH2 through the second test side to normally closed optocoupler U10, and through the 4th
Back production end carries out back production to detection signal PH2, and collects back production signal DI4.It is normally closed when output drive signal DO2 is effective
Optocoupler U10 first end, the second end obtain electric, then the 3rd end, the 4th end are not turned on, the detection that controller exports through the second test side
Signal PH2, and back production is carried out to detection signal PH2 through the 4th back production end, but do not collect back production signal DI4.
Therefore, controller carries out back production by normally closed optocoupler U10 to detection signal PH2, and back production letter is collected according to whetheing there is
Number DI4 determines drive signal DO2 output state.
The embodiment of the present invention proposes the detection circuit for controlling goat, is provided with controller on detection circuit, controls
Device processed is provided with the first drive end, the second drive end, the first test side, the second test side, the first back production end and the second back production end, control
Device processed includes direction handover module, the first back production circuit, the second back production circuit, and the input of direction handover module is connected with first
Drive end, the second drive end, output end are connected with the first back production circuit, the second back production circuit, the input of the first back production circuit
The first test side is connected with, output end is connected with goat, the first back production end.The first drive end, second are driven by controller
Moved end output drive signal carry out back respectively examine, whether there is according to the first back production end and the second back production end collect it is corresponding
Back production signal, and then may determine that whether signal system has output failure, it ensure that output safety.
Embodiment two
The present embodiment proposes the detection circuit for controlling goat from another point of view, and the detection circuit also includes：
The self-locking electricity being used for IGCT input drive signal DO2 is provided between the second drive end A, the second drive end B
Road, the input of latching circuit, which is provided with, is used for having the cut-out electricity that driving latching circuit is cut off larger current on N lines because collecting
Road, the output end of latching circuit are connected with IGCT, cut off and three-phase four-wire system power supply is connected with the input of circuit.
In force, when controller is transmitted to drive signal by the second drive end A, the second drive end B to latching circuit
DO2, and exported by latching circuit to IGCT, latching circuit keeps continuing output drive signal DO2 to the state of IGCT.It is brilliant
Brake tube is according to receiving drive signal DO2 so that goat rotates.Until when goat rotate in place, cut-out circuit collects
Larger electric current on center line (N lines) on three-phase four-wire system power supply, thus latching circuit is just cut off, latching circuit stops to crystalline substance
Brake tube sends drive signal DO2 so that goat stops operating.The application is by cutting off circuit according to collecting center line (N
Line) on larger electric current and cut off latching circuit so that goat stops operating.With respect to software processing so that goat
It is stopped, time-consuming shorter, response is faster.
Optionally, the cut-out circuit includes：
Abnormal current detection circuit, be connected to abnormal current detection circuit output end transformer, be connected to transformer
Output end rectifier and the triode Q1 that is connected in the output end of rectifier, abnormal current detect the input of circuit
Three-phase four-wire system power supply is connected with end, the output end of abnormal current detection circuit connects the input of transformer, transformer
Output end connects the input of rectifier, the output end connecting triode Q1 of rectifier base stage, and triode Q1 colelctor electrode connects
It is connected to the input of lock circuit, triode Q1 grounded emitter.
In force, cutting off circuit includes abnormal current detection circuit, transformer, rectifier and triode Q1, wherein,
Triode Q1 uses as switch.The electric current on N lines is collected when abnormal current detection circuit, by transformer by N lines
Electric current changes into alternating voltage, then alternating voltage is made into DC voltage by rectifier, finally transmits to triode Q1 so that
Rectifier exports larger DC voltage, when the DC voltage increases to certain value so that triode Q1 saturation conductions, then cut
Disconnected latching circuit, so as to which latching circuit stops output drive signal so that goat stops operating.
Optionally, it is characterised in that the latching circuit includes：
Normally opened optocoupler U2 connected normally closed optocoupler U1 and normally closed optocoupler U1, normally closed optocoupler U1 first end connection feeder ear
VCC, normally closed optocoupler U1 the second end connecting triode Q1 colelctor electrode, the of normally closed optocoupler U1 the 5th end and normally closed optocoupler U1
Four ends, the 6th end are connected, and normally closed optocoupler U1 the 5th end connects normally opened optocoupler U2 first end, and normally closed optocoupler U1 the 5th end connects
The control terminal of IGCT is connect, normally opened optocoupler U2 first end, the second end connect the second drive end B, normally opened optocoupler U2 the 3rd end
Connect normally closed optocoupler U1 the 6th end, the second drive end A of normally opened optocoupler U2 the 4th end connection controller.
In force, as shown in fig. 7, latching circuit includes normally closed optocoupler U1 and normally opened optocoupler U2, when triode Q1 is not led
When logical, normally closed optocoupler U1 first end, the second end do not have a driving voltage, and normally closed optocoupler U1 the 4th end, the 5th end and the
Six ends turn on, and controller transmits drive signal DO2 to normally closed optocoupler U1 through the second drive end A, and normally closed optocoupler U1, which will drive, to be believed
Number DO2 is transmitted to normally opened optocoupler U2 first end through the 4th end, the 5th end and the 6th end of itself so that normally opened optocoupler U2 is obtained
Electricity, drive signal DO2 often open the light coupling U2 the 3rd end, the 4th end be transmitted back to again normally closed optocoupler U1 the 4th end, the 5th end with
And the 6th end, and then form latching circuit.
The embodiment of the present invention proposes the detection circuit for controlling goat, and the detection circuit also includes：
The self-locking electricity being used for IGCT input drive signal DO2 is provided between the second drive end A, the second drive end B
Road, the input of latching circuit, which is provided with, is used for having the cut-out electricity that driving latching circuit is cut off larger current on N lines because collecting
Road, the output end of latching circuit are connected with IGCT, cut off and three-phase four-wire system power supply is connected with the input of circuit.By cutting
Deenergizing collects electric current larger on three-phase four-wire system power supply N lines, just cuts off latching circuit so that latching circuit stops output
Drive signal, and then goat is stopped operating.
Embodiment three
The present embodiment also proposed the detection circuit for controlling goat, described in the second drive end A, the second drive end
B, which is provided with, to be used to avoid cutting off circuit because erroneous judgement and cutting off the delay circuit of latching circuit.
In force, due to there may be the unstable situation of starting current when goat just starts and rotated, so that
Cut-out circuit may collect larger current within the of short duration time, cause to cut off circuit erroneous action cut-out latching circuit so that from
Lock circuit stops driving, so as to cause goat to start failure.Therefore, it is provided with and prolongs on the second drive end A, the second drive end B
When circuit.
Drive signal DO2 is first transmitted to IGCT control goat through delay circuit and rotated, until the electric current of goat is steady
Regularly, delay circuit completes output drive signal DO2, then continues to output drive signal DO2 by latching circuit, until goat arrives
During position, cut-out circuit, which is collected on the center line (N lines) of three-phase four-wire power, larger current, just cuts off latching circuit, and then
So that goat stops operating.
Optionally, the delay circuit includes：
The triode Q3 and normally closed optocoupler U5 being connected with triode Q3, triode Q3 base stage, emitter stage connect respectively
Second drive end A, the second drive end B, are provided with RC circuits between triode Q3 base stage and emitter stage, and the of normally closed optocoupler U5
One end connecting triode Q3 base stage, normally closed optocoupler U5 the second end connecting triode Q3 colelctor electrode, the of normally closed optocoupler U5
Five ends are connected with normally closed optocoupler U5 the 4th end, the 6th end, normally closed optocoupler U5 the 5th end connection latching circuit.
In force, as shown in figure 8, in circuit, A-DO2, B-DO2 refer to from the second drive end A, the second drive end B respectively
The drive signal DO2 of output, resistance R23, R31 and electric capacity C13 form RC circuits, when drive signal DO2 through the second drive end A,
Second drive end B is transmitted to triode Q3, and RC circuits charge when not yet completing, and triode Q3 is not turned on, normally closed optocoupler U5's
First end, the second end are not turned on voltage, then normally closed optocoupler U5 the 4th end, the 5th end and the 6th end conducting voltage, then drive
The frequent black out coupling U5 of dynamic signal DO2 the 4th end, the 5th end and the 6th end exports to IGCT control goat and rotated.
When RC circuit charging completes, then triode Q3 saturation conductions, normally closed optocoupler U5 first end, the second end electric conduction
Pressure, and normally closed optocoupler U5 the 4th end, the 5th end and the 6th end disconnect, then drive signal DO2 is exported to latching circuit, then by
Latching circuit is exported to IGCT control goat and rotated.Wherein, the delay time of delay circuit can be arranged to according to RC parameters
400ms~1000ms.
Optionally, the RC circuits include one or more one electric capacity of resistant series, or including one or more resistance
It is connected in parallel with a capacitor, or one or more resistance strings are connected in parallel with a capacitor.
In force, when RC circuits are made up of one or more one electric capacity of resistant series, due to the presence of electric capacity
DC current can not be flowed through, resistance and electric capacity all have inhibition to electric current.Its total impedance is determined by resistance and capacitive reactance, total to hinder
It is anti-to change and change with frequency.
When RC circuits are by one or more one electric capacity of resistor coupled in parallel, parallel circuit not only by direct current but also can pass through friendship
Flow signal.
When RC circuits are connected in parallel with a capacitor by one or more resistance strings to be formed, RC circuits have two corner frequencies, then
Need to be analyzed according to physical circuit.
Wherein, RC circuits are in charge and discharge process, and the voltage on electric capacity exponentially changes with the time, and pace of change takes
Certainly in time constant T, T=RC, when voltage is in stationary state, electric capacity C is bigger, then the discharge and recharge time is longer, or when electricity
Resistance R is bigger, and charging or discharging current is smaller, then the discharge and recharge time is also longer.
The embodiment of the present invention proposes the detection circuit for controlling goat, described in the second drive end A, the second driving
End B, which is provided with, to be used to avoid cutting off circuit because erroneous judgement and cutting off the delay circuit of latching circuit.By in the second drive end A,
Two drive end B are provided with delay circuit, avoid and that starting current is unstable be present when goat just starts and rotated, make
Circuit, which must be cut off, to collect larger current within the of short duration time, cause to cut off circuit erroneous action cut-out latching circuit, and then
So that goat starts failure.
Each sequence number in above-described embodiment is for illustration only, does not represent the elder generation during the assembling or use of each part
Order afterwards.
Embodiments of the invention are the foregoing is only, are not intended to limit the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. for controlling the detection circuit of goat, be provided with controller on detection circuit, controller is provided with the first drive end, the
Two drive ends, the first test side, the second test side, the first back production end and the second back production end, it is characterised in that the controller bag
Include：
Direction handover module, the first back production circuit, the second back production circuit, the input of direction handover module are connected with the first driving
End and the second drive end, the output end of direction handover module are connected with the first back production circuit and the second back production circuit, three-phase and four-line
L2, L3 line end of power supply processed connect the feeder ear of goat through direction handover module, and L1, N line end of three-phase four-wire system power supply connect
Connect the feeder ear of goat；
The input of first back production circuit is connected with the first test side, and the output end of the first back production circuit is connected with goat and
One back production end, the input of the second back production circuit are connected with the second test side, and the output end of the second back production circuit is connected with turn-out track
Machine and the second back production end.
2. the detection circuit according to claim 1 for being used to control goat, it is characterised in that the first drive end bag
Containing the first drive end A, the first drive end B, the second drive end includes the second drive end A, the second drive end B, and controller also includes
3rd back production end and IGCT.
3. the detection circuit according to claim 2 for being used to control goat, it is characterised in that the first back production circuit
Including：
The relay RLY1 and relay RLY2 to be connected with relay RLY1；
Relay RLY1 coil both ends connect the first drive end A and B, relay RLY1 SRE RLY2, relay respectively
Device RLY1 is provided with normally-closed contact K1, and relay RLY2 is provided with normally-closed contact K2, and the first test side is through normally-closed contact K1, normally-closed contact
K2 the first back production of connection end.
4. the detection circuit according to claim 2 for being used to control goat, it is characterised in that the second back production circuit
Including：
Normally closed optocoupler U10 is provided between the second drive end A and the second drive end B, normally closed optocoupler U10 first end is through resistance
R51 the second drive ends of connection A, normally closed optocoupler U10 first end through resistance R49 the second drive end of connection B, normally closed optocoupler U10's
Second end connects the second drive end B, the normally closed optocoupler U10 back production end of three-terminal link the 4th, and normally closed optocoupler U10 the 4th end connects
Connect the second test side.
5. the detection circuit according to claim 2 for being used to control goat, it is characterised in that the detection circuit also wraps
Include：
The latching circuit being used for IGCT input drive signal DO2 is provided between the second drive end A, the second drive end B, from
The input of lock circuit, which is provided with, is used for having the cut-out circuit that driving latching circuit is cut off larger current on N lines because collecting, from
The output end of lock circuit is connected with IGCT, cuts off and three-phase four-wire system power supply is connected with the input of circuit.
6. the detection circuit according to claim 5 for being used to control goat, it is characterised in that the cut-out circuit bag
Include：
Abnormal current detection circuit, be connected to abnormal current detection circuit output end transformer, be connected to the defeated of transformer
The triode Q1 for going out the rectifier at end and being connected in the output end of rectifier, abnormal current are detected on the input of circuit
It is connected with three-phase four-wire system power supply, the input of the output end connection transformer of abnormal current detection circuit, the output of transformer
The input of end connection rectifier, the output end connecting triode Q1 of rectifier base stage, triode Q1 colelctor electrode connection is certainly
The input of lock circuit, triode Q1 grounded emitter.
7. the detection circuit according to claim 5 for being used to control goat, it is characterised in that the latching circuit bag
Include：
Normally opened optocoupler U2 connected normally closed optocoupler U1 and normally closed optocoupler U1, normally closed optocoupler U1 first end connection feeder ear VCC,
Normally closed optocoupler U1 the second end connecting triode Q1 colelctor electrode, normally closed optocoupler U1 the 5th end and the 4th of normally closed optocoupler U1 the
End, the 6th end are connected, and normally closed optocoupler U1 the 5th end connects normally opened optocoupler U2 first end, normally closed optocoupler U1 the 5th end connection
The control terminal of IGCT, the 3rd end that normally opened optocoupler U2 first end, the second end connect the second drive end B, normally opened optocoupler U2 connect
Meet normally closed optocoupler U1 the 6th end, the second drive end A of normally opened optocoupler U2 the 4th end connection controller.
8. the detection circuit according to claim 5 for being used to control goat, it is characterised in that described in the second drive end
A, the second drive end B, which is provided with, is used to avoid cutting off circuit because erroneous judgement and cutting off the delay circuit of latching circuit.
9. the detection circuit according to claim 8 for being used to control goat, it is characterised in that the delay circuit bag
Include：
The triode Q3 and normally closed optocoupler U5 being connected with triode Q3, triode Q3 base stage, emitter stage connect second respectively
Drive end A, the second drive end B, RC circuits, normally closed optocoupler U5 first end are provided between triode Q3 base stage and emitter stage
Connecting triode Q3 base stage, normally closed optocoupler U5 the second end connecting triode Q3 colelctor electrode, normally closed optocoupler U5 the 5th end
It is connected with normally closed optocoupler U5 the 4th end, the 6th end, normally closed optocoupler U5 the 5th end connection latching circuit.
10. the detection circuit according to claim 9 for being used to control goat, it is characterised in that the RC circuits include
One or more one electric capacity of resistant series, or including one or more one electric capacity of resistor coupled in parallel, or one or more resistance
One electric capacity of connection in series-parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710681570.5A CN107380209B (en) | 2017-08-10 | 2017-08-10 | Detection circuit for controlling switch machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710681570.5A CN107380209B (en) | 2017-08-10 | 2017-08-10 | Detection circuit for controlling switch machine |
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| CN107380209B CN107380209B (en) | 2024-03-12 |
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| CN201710681570.5A Active CN107380209B (en) | 2017-08-10 | 2017-08-10 | Detection circuit for controlling switch machine |
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Cited By (1)
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| Publication number | Publication date |
|---|---|
| CN107380209B (en) | 2024-03-12 |
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