CN109283884A - Gate equipotential intelligence conducting device - Google Patents
Gate equipotential intelligence conducting device Download PDFInfo
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- CN109283884A CN109283884A CN201811085266.5A CN201811085266A CN109283884A CN 109283884 A CN109283884 A CN 109283884A CN 201811085266 A CN201811085266 A CN 201811085266A CN 109283884 A CN109283884 A CN 109283884A
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- Prior art keywords
- terminal
- gate
- switch
- rail
- connect
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B1/00—General arrangement of stations, platforms, or sidings; Railway networks; Rail vehicle marshalling systems
- B61B1/02—General arrangement of stations and platforms including protection devices for the passengers
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses gate equipotential intelligence conducting devices, gate terminal is connect by first switch with rail terminal, current measurement module is used to incude the current signal on the electric connection line of gate terminal and rail terminal, gate terminal also passes through second switch and connect with ground terminal, rail terminal is switched by third and is connect with ground terminal, first switch, second switch and third switch are controlled with PLC controller and are connected, and current measurement module and PLC controller control connect.The beneficial effects of the invention are as follows from single connection or can be not connected to state and be converted to intelligent control state the equipotential link of gate and rail, it can prevent gate and rail equipotential link or be not connected to, the security risk that gate internal control circuit damage in insulation generates, and gate and electric current when rail equipotential link state can be monitored, monitor whether gate insulation against ground is abnormal, and alarm is provided, counter-measure is taken convenient for staff.
Description
Technical field
The invention belongs to technical field of rail traffic, and in particular to gate equipotential intelligence conducting device.
Background technique
In traditional urban rail traffic platform door system design, because there are current potentials between rail or vehicle and gate
Difference, cathode of the rail as traction current, there are voltage differences to avoid between rail or vehicle and gate, to pacify to passenger
It impacts, can will be generally attached between rail and gate with cable entirely, realize equipotential link.Equipotential link refers to
Separated device, all conductive bodies equipotential bonding conductor or surge protector are connected with reduce electric current at them it
Between the potential difference that generates.
After vehicle and gate realize equipotential, if gate insulation against ground is bad, it will result directly in rail and pass through station
Tai Men be attached, cause a large amount of rails to enter station back up through gate, one side high current is by being easy in weakness
Point causes to generate heat on fire, and on the other hand a large amount of stray electrical currents enter station, will cause electric current rotten to underground metal pipeline structures
Erosion.Wherein, stray electrical current refers to the electric current flowed other than design or regulation circuit, also referred to as " fan's stream ".
According to " 9.3.11 " in " metro design code " GB50157-2013 it is found that when gate is arranged in platform, from
Insulation processing should be carried out under the platform ground decoration layer of the inside 1m range of platform genesis.Its purpose is to prevent vehicle electrical
Position is higher than station ground potential, and then jeopardizes passenger safety；In " metro design code " GB50157-2013 " 26.5.7 it is found that
Gate and compartment preferably keep equipotential, and when having with rail, when coupling demand, equipotential should meet respective specified.
From the point of view of specification, platform finishing layer insulation is carried out, and realize that the equipotential link of gate and rail (train) is
Ideal engineered solution.But it is found during actual operation, platform finishing layer insulation changes with external environment, is difficult
It is guaranteed always, insulation resistance, which can be reduced constantly, even to fail.If gate in this case and rail holding etc.
Current potential connection, is equal to directly be grounded rail, will lead to high current sparking, and crisis station is safe, after tested, the maximum electricity in part
It flows up to 700A.
Therefore, urban operating line generally takes after platform finishing layer insulation reduces and disconnects equipotential device,
The scheme of insulating film and brushing insulated paint is added in the place that passenger can contact.But the program is first is that at high cost；Second is that insulation is assorted
When can not effectively predict, bring hidden danger to O&M；Third is that if equipotential does not connect, when gate internal control route is damaged
When, gate will be made to be in high pressure, crisis passenger safety.
Summary of the invention
To overcome technological deficiency of the existing technology, the invention discloses a kind of gate equipotential, intelligently conducting is filled
It sets, can the equipotential link of gate and rail from single connection or is not connected to state and be converted to intelligent control state shape
State can prevent gate and rail equipotential link or be not connected to the security risk generated, and can monitor gate and rail etc.
Whether abnormal electric current when current potential connection status monitors gate insulating layer, and provides alarm, takes and answers convenient for staff
To measure.
The technical solution adopted by the present invention to solve the technical problems is gate equipotential intelligence conducting device, including
PLC controller, manual automatic transfer switch, equipotential on-off change-over switch, current measurement module, gate terminal, rail end
Son and ground terminal；
Equipotential on-off change-over switch, status indicator lamp and manual automatic transfer switch are connect with PLC controller, gate end
Son is connect by first switch with rail terminal, and current measurement module is used to incude the electrical connection of gate terminal and rail terminal
Current signal on line, gate terminal also pass through second switch and connect with ground terminal, rail terminal by third switch with
Ground terminal connection, the first switch, second switch and third switch are controlled with PLC controller and are connected, current measurement mould
Block and PLC controller control connect.
Preferably, the first end of rail terminal connection control circuit, gate terminal connect the second end of control circuit, control
Circuit processed includes first diode, the second diode, third diode, the 4th diode, first switch and second switch, and first
Diode cathode is connect as the first end of control circuit with rail terminal, and first diode is connect with the second diode cathode,
Second diode cathode is connect with third diode cathode, and third diode cathode is connect with the 4th diode cathode, and the four or two
Pole pipe cathode is connect with first diode anode, and first diode cathode also passes through second switch and connect with ground terminal, and first
Diode cathode also passes through first switch and connect with third diode cathode, the anode of the second diode as control circuit
Two ends are connect with gate terminal.
Preferably, rail terminal includes left side rail connection terminal and right side rail connection terminal, gate terminal include
Left side gate connection terminal and right side gate connection terminal；
Wherein, rail connection terminal in left side is connect with left side gate connection terminal with a control circuit, the connection of left side rail
Terminal connects the first end of control circuit, and left side gate connection terminal connects the second end of control circuit；
Right side rail connection terminal is connect with right side gate connection terminal with another control circuit, right side rail connection terminal
The first end of control circuit is connected, right side gate connection terminal connects the second end of control circuit.
Preferably, further include voltage sensor and leakage alarm, the voltage sensor be connected serially to gate terminal and
On the electric connection line of ground terminal, leakage alarm is connect with the PLC controller.
It preferably, further include status indicator lamp, the status indicator lamp includes equipotential on-off indicator light and ground connection on-off
Indicator light, equipotential on-off indicator light and ground connection on-off indicator light are controlled with PLC controller and are connected.
It preferably, further include counter, counter is connect with the PLC controller.
It preferably, further include insulation damages alarm, insulation damage alarm is connect with the PLC controller.
The beneficial effects of the present invention are:
First, realize the intelligence conducting of equipotential link, no train under normal circumstances, gate be attached, it is disconnected
Open the equipotential link of gate and rail, it is ensured that the safety of platform personnel prevents rail current from sealing in station；
Second, when there is train stop, the connection of gate and ground terminal is disconnected by the present apparatus, be closed gate and rail etc.
Current potential connection, prevents from forming voltage between train and ground, it is ensured that vehicle multiplies the personal safety of personnel；
Third, when gate and rail equipotential link, the present apparatus can be by current measurement module on bonding wire
Circuit be monitored, if monitoring current is greater than the set value, PLC controller reminds that staff handle in time and automatic disconnect is stood
The equipotential link of platform door and rail, containment gate insulation weak spot " sparking " avoid the damage of platform insulating layer that disaster occurs.
Detailed description of the invention
Fig. 1 is a kind of functional block diagram schematic diagram of the invention.
Fig. 2 is a kind of circuit control principle schematic diagram of the invention.
Fig. 3 is a kind of existing subway equipotential link schematic diagram.
Appended drawing reference: A1- first end, A2- second end, 1- control circuit, D1- first diode, the second diode of D2-,
D3- third diode, the 4th diode of D4-.
Specific embodiment
More detailed description is done to embodiments of the present invention below in conjunction with attached drawing and appended drawing reference, makes to be familiar with this field
Technology people can implement accordingly after studying this specification carefully.It should be appreciated that specific embodiment described herein is only to explain this
Invention, is not intended to limit the present invention.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term " on ", "horizontal", "inner"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitation of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
Embodiment: referring to attached drawing 1, attached drawing 2, attached gate equipotential intelligence conducting device shown in Fig. 3, including PLC control
It device processed, manual automatic transfer switch, equipotential on-off change-over switch, current measurement module, gate terminal, rail terminal and connects
Ground terminal；
Equipotential on-off change-over switch, status indicator lamp and manual automatic transfer switch are connect with PLC controller, gate end
Son is connect by first switch with rail terminal, and current measurement module is used to incude the electrical connection of gate terminal and rail terminal
Current signal on line, gate terminal also pass through second switch and connect with ground terminal, rail terminal by third switch with
Ground terminal connection, the first switch, second switch and third switch are controlled with PLC controller and are connected, current measurement mould
Block and PLC controller control connect.
In the present embodiment, since rail is return current rail, to avoid corrosion of the DC power supply to structure reinforcing bars, metallic conduit,
Rail need to be connected to ground, therefore there are voltages between rail and ground, if gate does not carry out equipotential link or platform with rail
When door insulation is inadequate, when train rests in platform, voltage, value and shuttle train driving shape will be present between train and gate
State is related, that is, is equal to the current potential of rail over the ground.If this current potential exceeds the voltage that human body is resistant to, passenger safety will be jeopardized.Therefore
Rail and gate need to be subjected to equipotential link, thus it requires gate needs to be insulated.
The intellectual monitoring for the equipotential link that the present apparatus can insulate between situation progress rail and gate according to platform, one
It is by alarming gate damage in insulation and gate electric leakage monitoring of stray current；Second is that preventing gate equipotential
Connect or be not connected to the security risk generated.
When the working principle of the present apparatus, to be stopped under normal circumstances in no train, gate terminal is connect with ground terminal,
The safety for ensuring platform personnel prevents rail electric current from sealing in station；
After having train to enter the station to come to a complete stop, gate terminal is disconnected with ground terminal, and PLC controller makes gate terminal and steel
The connection of rail terminal, and supervise current measurement module to the electric current on both gate terminal and rail terminal electric connection line
It surveys, if the current value is normal, gate terminal is normally connect with rail terminal, if the current value is greater than the set value, PLC
Controller disconnects the connection (or control gate terminal is connected to the short time on ground) of gate terminal and rail terminal, containment
Gate insulate weak spot " sparking ", and after gate shutdown, gate terminal restores to the connection with ground terminal.
Wherein, current measurement module is common electric current inductive switch, and electric current inductive switch is for the electricity in induction line
Stream, the setting value are set by the electric current inductive switch, when the electric current for passing through electric current inductive switch is greater than its setting value, the then electricity
Influenza inductive switch exports alarm signal, which can be used as the trigger signal of first switch, second switch and third switch,
Trigger switch response device switch motion.The sparking current critical value that the setting value of electric current inductive switch is contemplated that as gate.
Specifically, when manual automatic transfer switch is located at automatic position, if platform door switch enable signal provides shutdown and refers to
When enabling to PLC controller, PLC controller switchs first switch and third to disconnect, and second switch is connected, gate terminal with connect
The connection of ground terminal；If platform door switch enable signal provides door open command to PLC controller, PLC controller makes second switch
And third switch disconnects, first switch is connected, and gate terminal and ground terminal disconnect, and gate terminal and rail terminal etc. are electric
Position connection, and the electric current between gate terminal and rail terminal is monitored at this time, if electric current is greater than the set value, table at this time
Show that gate insulating layer damages, current measurement module disconnects first switch, realizes current protection, PLC controller control insulation damage
Bad alarm provides the alarm of gate insulation damages, avoids striking sparks.
When manual automatic transfer switch is located at manual position, it is used for by manually controlling equipotential on-off change-over switch
Gate terminal and the equipotential on-off of rail terminal control, and are convenient for overhaul of the equipments, it can also be used to which gate is exhausted under even in everyday situations
The use of edge detection.
In the case where no train is stopped, the first, second, third switch is all off, at this point, can pass through voltage sensor
Gate terminal is detected to the voltage of ground terminal, if the voltage is higher than the peak of gate voltage-to-ground, then it represents that platform
Leak current fault may occur for door, and PLC controller control leakage alarm sounds an alarm, for warning staff.Voltage passes
Sensor refers to the sensor that can be experienced measured voltage and be converted into usable output signal.Preferably, the voltage sensor uses
Alternating current-direct current transmitter realizes multiplexing.
Preferably, in the case where there is train stop, gate terminal and rail terminal equipotential link be can be used two-way
Direct current transmitter detects whether current gate occurs leak current fault, since DC leakage or exchange may occur for gate at this time
Electric leakage, when there is ac leakage, direct current transmitter can only accomplish that half-wave detects, it is therefore desirable to and voltage transmitter cooperation makes
With.
The present apparatus further includes counter, and counter is connect with PLC controller, which is used to have train to stop
In the case of the number of insulation fault is counted, when counter reaches the insulation fault number of certain numerical value, may indicate
Gate insulating layer insulation damages are more serious, the present apparatus by not in the equipotential link into gate terminal and rail terminal,
It needs manually to reset after manually overhauling.
Equipotential on-off indicator light is used for the display mark that gate terminal is connected to rail terminal, is grounded on-off indicator light
The display mark being connected to for gate terminal with ground terminal.
As shown in Fig. 2, indicate that left and right gate is separately controlled, specific: control circuit includes first diode, second
Diode, third diode, the 4th diode, first switch and second switch, first diode anode is as control circuit
First end is connect with rail terminal, and first diode is connect with the second diode cathode, the second diode cathode and the three or two pole
The connection of pipe cathode, third diode cathode are connect with the 4th diode cathode, the 4th diode cathode and first diode anode
Connection, first diode cathode also pass through second switch and connect with ground terminal, and first diode cathode also passes through first switch
It is connect with third diode cathode, the anode of the second diode is connect as the second end of control circuit with gate terminal.
Left side rail connection terminal is connect with left side gate connection terminal with a control circuit, left side rail connecting pin
The first end of son connection control circuit, left side gate connection terminal connect the second end of control circuit；
Right side rail connection terminal is connect with right side gate connection terminal with another control circuit, right side rail connection terminal
The first end of control circuit is connected, right side gate connection terminal connects the second end of control circuit.
By the way that left gate and right gate is separately controlled, if left side rail voltage is higher than left side platform gate voltage, when having
When train is stopped, first switch closure, second switch is disconnected, and left side rail connection terminal passes through first diode, first switch
And third diode and left side gate connection terminal are formed into a loop, and realize that the equipotential of left side gate and left side rail connects
It connects；Equally, in another control circuit, right side rail connection terminal passes through first diode, first switch and the three or two pole
Pipe is formed into a loop with right side gate connection terminal, realizes the equipotential link of right side gate and right side rail；
When no train is stopped, since gate has certain voltage over the ground, first switch is disconnected, second switch closure, left side
Gate terminal is formed into a loop by the second diode, second switch and ground terminal, realizes left side gate and ground terminal
Connection；Equally, in another control circuit, right side gate terminal passes through the second diode, second switch and ground terminal
Son forming circuit, realizes the connection of right side gate and ground terminal；
Wherein, in gate and rail equipotential link, it is electric that current measurement module incudes gate terminal and rail terminal etc.
Electric current on the connecting line of position can be in gate terminal and rail if current measurement module or controller failure can not be protected
One fuse is set on terminal bonding wire, as spare overcurrent protection.Fuse refer to when electric current be more than specified value when,
Melt is set to fuse with the heat that itself is generated, a kind of electric appliance of disconnecting circuit.
When gate is connect with ground terminal, voltage sensor is for detecting between gate terminal and ground terminal
Voltage is used for detection of electrical leakage.
The above content is combine specific preferred embodiment to the further description of the invention made, and it cannot be said that originally
The specific embodiment of invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs,
The other embodiments obtained in the case where not departing from technical solution of the present invention, should be included within the scope of the present invention.
Claims (7)
1. gate equipotential intelligence conducting device, it is characterised in that: including PLC controller, manual automatic transfer switch, etc. electricity
Position on-off change-over switch, current measurement module, gate terminal, rail terminal and ground terminal；
Equipotential on-off change-over switch, status indicator lamp and manual automatic transfer switch are connect with PLC controller, gate end
Son is connect by first switch with rail terminal, and current measurement module is used to incude the electrical connection of gate terminal and rail terminal
Current signal on line, gate terminal also pass through second switch and connect with ground terminal, rail terminal by third switch with
Ground terminal connection, the first switch, second switch and third switch are controlled with PLC controller and are connected, current measurement mould
Block and PLC controller control connect.
2. gate equipotential intelligence conducting device as described in claim 1, it is characterised in that: rail terminal connection control electricity
The first end on road, gate terminal connect control circuit second end, control circuit include first diode, the second diode,
Third diode, the 4th diode, first switch and second switch, first diode anode as control circuit first end with
The connection of rail terminal, first diode are connect with the second diode cathode, and the second diode cathode and third diode cathode connect
It connecing, third diode cathode is connect with the 4th diode cathode, and the 4th diode cathode is connect with first diode anode, and first
Diode cathode also passes through second switch and connect with ground terminal, and first diode cathode also passes through first switch and the three or two pole
The connection of pipe anode, the anode of the second diode are connect as the second end of control circuit with gate terminal.
3. gate equipotential intelligence conducting device as claimed in claim 2, it is characterised in that: rail terminal includes left side steel
Rail connection terminal and right side rail connection terminal, gate terminal include left side gate connection terminal and the connection of right side gate
Terminal；
Wherein, rail connection terminal in left side is connect with left side gate connection terminal with a control circuit, the connection of left side rail
Terminal connects the first end of control circuit, and left side gate connection terminal connects the second end of control circuit；
Right side rail connection terminal is connect with right side gate connection terminal with another control circuit, right side rail connection terminal
The first end of control circuit is connected, right side gate connection terminal connects the second end of control circuit.
4. gate equipotential intelligence conducting device as described in claim 1, it is characterised in that: further include voltage sensor and
Leakage alarm, the voltage sensor are connected serially on the electric connection line of gate terminal and ground terminal, leakage alarm with
The PLC controller connection.
5. gate equipotential intelligence conducting device as described in claim 1, it is characterised in that: it further include status indicator lamp,
The status indicator lamp include equipotential on-off indicator light and ground connection on-off indicator light, equipotential on-off indicator light and ground connection on-off
Indicator light is controlled with PLC controller and is connected.
6. gate equipotential intelligence conducting device as described in claim 1, it is characterised in that: further include counter, count
Device is connect with the PLC controller.
7. gate equipotential intelligence conducting device as described in claim 1, it is characterised in that: further include insulation damages alarm
Device, insulation damage alarm are connect with the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085266.5A CN109283884A (en) | 2018-09-18 | 2018-09-18 | Gate equipotential intelligence conducting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085266.5A CN109283884A (en) | 2018-09-18 | 2018-09-18 | Gate equipotential intelligence conducting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109283884A true CN109283884A (en) | 2019-01-29 |
Family
ID=65181548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811085266.5A Pending CN109283884A (en) | 2018-09-18 | 2018-09-18 | Gate equipotential intelligence conducting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109283884A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113479220A (en) * | 2021-06-08 | 2021-10-08 | 广州地铁设计研究院股份有限公司 | Platform door insulation monitoring and automatic rail connecting control device and control method |
| CN115092188A (en) * | 2022-05-09 | 2022-09-23 | 卡斯柯信号有限公司 | Platform door safety protection method, equipment and medium for dual-standard signal system |
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| CN113479220A (en) * | 2021-06-08 | 2021-10-08 | 广州地铁设计研究院股份有限公司 | Platform door insulation monitoring and automatic rail connecting control device and control method |
| CN113479220B (en) * | 2021-06-08 | 2022-06-07 | 广州地铁设计研究院股份有限公司 | Platform door insulation monitoring and automatic rail connecting control device and control method |
| CN115092188A (en) * | 2022-05-09 | 2022-09-23 | 卡斯柯信号有限公司 | Platform door safety protection method, equipment and medium for dual-standard signal system |
| CN115092188B (en) * | 2022-05-09 | 2024-03-29 | 卡斯柯信号有限公司 | Platform door safety protection method, equipment and medium for double-system signal system |
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Application publication date: 20190129 |