CN107776612B - The monitoring foreign bodies control unit of railway foreign body intrusion monitoring system - Google Patents
The monitoring foreign bodies control unit of railway foreign body intrusion monitoring system Download PDFInfo
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- CN107776612B CN107776612B CN201711041074.XA CN201711041074A CN107776612B CN 107776612 B CN107776612 B CN 107776612B CN 201711041074 A CN201711041074 A CN 201711041074A CN 107776612 B CN107776612 B CN 107776612B
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- relay
- netlist
- contact switch
- foreign body
- body intrusion
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Classifications
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- 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 vehicle trains
- B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
- B61L23/041—Obstacle detection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
Abstract
The invention discloses a kind of monitoring foreign bodies control units of railway foreign body intrusion monitoring system, including indicating that relay, foreign body intrusion indicate that the cathode feeder ear of relay is connected with DC power cathode by the foreign body intrusion that the first branch and second branch are powered respectively by DC power anode；The first branch includes that A netlist shows that the 1# contact switch of relay, B netlist show that the 1# contact switch of relay and foreign body intrusion indicate the contact switch of relay；Second branch includes that A netlist shows that the 2# contact switch of relay, B netlist show the 2# contact switch of relay and dispatch the contact switch of reset relay.Above-mentioned device, which is mutually redundant and could only while when meeting multiple conditions trigger foreign body intrusion, indicates that relay excitation power-up and state change, it is ensured that the safety to the control of railway system's foreign body intrusion.
Description
Technical field
The invention belongs to railway anti-disasters to monitor system, and in particular to a kind of railway foreign body intrusion monitoring system control unit.
Background technique
Profession of taking precautions against natural calamities is suitable for the New Specialty of engineering after Railways Stations as one, generally answers in high-speed rail construction at present
With, for foreign body intrusion system as railway anti-disaster profession chief component, directly participation thermoacoustic prime engine, safety requirements is high, due to
The appearance successively of professional standard, existing foreign body monitoring system has been unable to satisfy standard requirements, and structure is complicated at present, spare and accessory parts
It is more, the problems such as small circuit is more, and circuit logic is unintelligible, high failure rate, safety is not high.
Summary of the invention
The purpose of the present invention is to provide a kind of monitoring foreign bodies control units of railway foreign body intrusion monitoring system, using more
The combination of a relay contact indicates that relay is powered control to foreign body intrusion, it is ensured that the safety of system.
Technology contents of the invention are as follows:
A kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system, including pass through first by DC power anode
Foreign body intrusion that branch and second branch are powered respectively indicates relay, and foreign body intrusion indicates the cathode feeder ear of relay and straight
Stream power cathode is connected；
The first branch includes that A netlist shows that the 1# contact switch of relay, B netlist show the 1# contact switch of relay
The contact switch of relay is indicated with foreign body intrusion；DC power anode shows the 1# contact switch and B net of relay by A netlist
After the circuit for indicating the 1# contact switch parallel connection of relay, after indicating that the contact switch of relay is connected with foreign body intrusion, connection
Connecing indicates the positive feeder ear of relay in foreign body intrusion；
The second branch includes that A netlist shows that the 2# contact switch of relay, B netlist show the 2# contact switch of relay
With the contact switch of scheduling reset relay；DC power anode shows that the 2# contact switch of relay, B netlist show by A netlist
After the series circuit of the contact switch composition of the 2# contact switch and scheduling reset relay of relay, it is connected in foreign body intrusion table
Show the positive feeder ear of relay.
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, A netlist shows relay work in A power grid
In power-supplying circuit, A power grid power-supplying circuit includes isolating transformer, polar biased relay, rectistack, capacitor, resistance
With electric network state feedback module, concatenated after polar biased relay is in parallel with capacitor with resistance, the both ends of sequential circuit connect respectively
Two output ends of isolating transformer, after electric network state feedback module is connected with rectistack, both ends be connected in parallel on respectively polar biased after
Two endpoints of electric appliance；A netlist shows that relay is the polar biased relay in A power grid power-supplying circuit.
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, B netlist shows relay work in B power grid
In power-supplying circuit, B power grid power-supplying circuit includes isolating transformer, polar biased relay, rectistack, capacitor, resistance
With electric network state feedback module, concatenated after polar biased relay is in parallel with capacitor with resistance, the both ends of sequential circuit connect respectively
Two output ends of isolating transformer, after electric network state feedback module is connected with rectistack, both ends be connected in parallel on respectively polar biased after
Two endpoints of electric appliance；B netlist shows that relay is the polar biased relay in B power grid power-supplying circuit.
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, electric network state feedback module is that setting exists
Along Railway is across the mesh transmission conducting wire or normally closed switch on railroad bridge
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, scheduling reset relay is included in relay
In device assembled unit, control centre issues scheduling and restores after instructing, and is that scheduling restores relay by the PLC control unit of indoor machine
The power-up of device driving coil excitation.
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, scheduling reset relay puts type using slow
Relay, its contact switch is on state when scheduling reset relay excitation is powered on, and is disconnected automatically after extending a period of time.
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, show polar biased relay excitation in A netlist
When power-up, A netlist shows that the 1# contact switch of relay and A netlist show that the 2# contact switch of relay is on state.
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, show polar biased relay excitation in B netlist
When power-up, B netlist shows that the 1# contact switch of relay and B netlist show that the 2# contact switch of relay is on state.
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, relay excitation is indicated in foreign body intrusion
When power-up, foreign body intrusion indicates that the contact switch of relay is on state.
In the monitoring foreign bodies control unit of above-mentioned railway foreign body intrusion monitoring system, slow type relay of putting is JWJXC-H340
Type.
The advantageous effects that the present invention has are as follows:
1, foreign body intrusion of the invention indicates that relay uses A netlist and shows that relay, B netlist show that relay, scheduling are extensive
Multiple relay and foreign body intrusion indicate that multiple contact switch of relay itself form control circuit, and above-mentioned device is superfluous each other
It is remaining and could only trigger foreign body intrusion when meeting multiple conditions simultaneously and indicate relay excitation power-up and state change, it is ensured that
To the reliability of railway system's foreign body intrusion control.
2, in double net supply control units of the invention, the rectistack of single-phase conducting is accessed in AC transformer circuit,
And matched with polar biased relay, ingenious to realize under A power grid and B electric network state fine status, A netlist shows relay, B net
Indicate that relay is just in powering state, it is therefore prevented that be mixed into malfunction when other power supplys in short circuit and power supply, improve A net
Indicate that relay, B netlist show the reliability of relay operating circuit, so ensure foreign body intrusion control circuit reliability and
Safety.
3, in double net supply control units of the invention, by outdoor electric network state feedback module access polar biased relay electricity
Lu Zhong provides electricity once outdoor electric network state feedback module occurs interrupting or failure, polar biased relay are overturn with regard to generating state
The prompt of net failure easily and reliably realizes the monitoring to outdoor electric network state.
Detailed description of the invention
Fig. 1 is railway foreign body intrusion control unit system composition schematic diagram of the present invention；
Fig. 2 is the theory of constitution figure of the double net supply control units of the present invention；
Fig. 3 is double current flow diagrams of the net supply control unit in preceding half-wave voltage of the present invention；
Fig. 4 is double current flow diagrams of the net supply control unit in rear half-wave voltage of the present invention；
Fig. 5 is the theory of constitution figure of monitoring foreign bodies control unit of the present invention.
Appended drawing reference are as follows: 1-PLC control unit；2-indoor machine cabinets；3-relay assembly units；The control of 4-tracksides
Device；5-power grids；6-outdoor equipments；7-signal Machine Rooms；8-column control interfaces；10-outdoor circuits；11-isolating transformers；
12-resistance；13-polar biased relays；14-capacitors；15-rectistacks；16-electric network state feedback modules；17-positive terminals
Son；18-negative terminals；19-preceding half-wave current directions；20-rear half-wave current directions；31-A netlists show the 1# touching of relay
Point switch；32-B netlists show the 1# contact switch of relay；The contact switch of 33-foreign body intrusions expression relay；34-is different
Object, which invades limit, indicates relay；35-A netlists show the 2# contact switch of relay；36-B netlists show the 2# contact switch of relay；
The contact switch of 37-scheduling reset relays.
Specific embodiment
As shown in Figure 1, the control unit of railway foreign body intrusion monitoring system of the invention, including it is mounted on indoor machine cabinet 2
PLC control unit 1 and relay assembly unit 3, the relay assembly unit 3 include several relays and Xiang Guan electricity
The column control interface 8 of device element, relay assembly unit 3 and signal Machine Room 7 and 5 Electricity Federation of trackside controller of outdoor equipment 6
It connects.The PLC control unit 1 that foreign body intrusion monitors control unit can be the relay in relay assembly unit 3 according to dispatch command
The letter that the power-up of device excitation, signal required for generating, while PLC control unit 1 are provided by acquiring relay assembly unit 3
Number, live electric network state is monitored in real time.
The control unit of railway foreign body intrusion monitoring system can pass through relay assembly under the control of PLC control unit 1
The combination of relay and its contact switch and peripheral components in unit 3 generates multi-channel control circuit, and main includes double net power supplies
Control unit and monitoring foreign bodies control unit.
As in Figure 2-4, double net supply control units of the invention include the A power grid power-supplying circuit that is mutually redundant and
B power grid power-supplying circuit；
A power grid power-supplying circuit and B power grid power-supplying circuit respectively include isolating transformer 11, polar biased relay
13, rectistack 15, capacitor 14, resistance 12 and electric network state feedback module 16, after polar biased relay 13 is in parallel with capacitor 14
It is concatenated with resistance 12, the both ends of sequential circuit connect two output ends in isolating transformer 11, electric network state feedback module respectively
After 16 connect with rectistack 15, both ends are connected in parallel on two endpoints of polar biased relay 13 respectively.Wherein electric network state feeds back mould
Block 16 and rectistack 15 are 10 part of outdoor circuit, remaining is interior circuit.The wherein parameter of resistance 12 and capacitor 14 point
It is not 750 ohm, 4 microfarads.
A power grid power-supplying circuit is identical with the structure of B power grid power-supplying circuit, only A power grid power supply control
The input terminal of the isolating transformer 11 of circuit is powered by A power grid 220V, the isolating transformer of the B power grid power-supplying circuit
11 input terminal is powered by B power grid 220V, and two sets of power grids are mutually redundant, it is ensured that at least a set of network operation is normal, and makes it
Corresponding polar biased relay 13 works normally.In addition the polar biased relay 13 in A power grid power-supplying circuit is also known as A netlist and shows
Relay, the polar biased relay 13 in B power grid power-supplying circuit are also known as B netlist and show relay, are all made of JPXC-1000 type
Safety polar biased relay, ability excitation is powered on when only the input voltage when both ends meets polar requirement, and causes contacts status
Variation.
The model BD1-7 of isolating transformer 11 in Fig. 2, voltage input output is than being 2:1, i.e. 220V input, 110V output.
The one section of mesh transmission conducting wire or a normally closed switch in monitored power grid periphery can be set in electric network state feedback module 16,
Purpose is that whether normal condition is fed back to power grid, and in the operation of practical high-speed rail, electric network state feedback module 16 is arranged in height
It, can be by electric network state feedback module 16 when having under pendant object (such as vehicle falls down from the bridge) pendant on bridge on bridge two sides along iron
Damage, causes circuit breaker in Fig. 2, so that the namely A netlist of polar biased relay 13 shows that relay or B netlist show relay
It is overturn by excitation powering state, provides the prompt of A net and/or B net power supply circuit failure.
The working principle of double net supply control units is as shown in Figure 3 and Figure 4, the core component of A/B net power-supplying circuit
It is two safety polar biased relays 13, model JPXC-1000 type has polarity selective energy.When A/B net power supply control electricity
When the access of road, connected the secondary side circuit of isolating transformer 11, external circuit by A/B netlist show the actuating coil of relay with
15 parallel circuit of rectistack is constituted, and by adjusting the direction of rectistack, is filtered off alternating current and is flowed away a half-wave, show A/B netlist
The operating voltage of relay acquisition single direction.As shown in figure 3,19 be the electricity of its preceding half-wave in a half-wave of alternating current
Stream flow direction, this half-wave current show that relay positive terminal 17 flows by A/B netlist, and negative terminal 18 flows out, thus makes A/B netlist
Show that relay excitation picks up, and charges for capacitor C1, and rectistack 15 is because of the cutoff function of the reverse current of diode, in electric current
This half wave cycles in be off state.
As shown in figure 4,20 be the current direction of half-wave thereafter, due to rectistack 15 in another half-wave of alternating current
Diode current flow, electric current circulates from rectistack Z, A/B netlist show relay due to for two polar biased relays, therefore this partly
In wave period can not excitation show that the magnet exciting coil of relay provides electric current to A/B netlist but due to the electric discharge of capacitor C1, from
And remain at attracting state.This assures within the entire AC power supply period, as long as the power supply of A/B power grid is normal, A/B
Netlist shows that relay is normal attracting state.It is only double to net while breaking, alarm is just provided, when singly net is disconnected for any one
It does not alarm.
This circuit has the effect that
(1) short-circuit protection:
Once short circuit occurs for some part in circuit, then rectistack 15 is ineffective, indicates in relay coil at this time, only
There is alternating current circulation, and A/B netlist shows that relay is DC relay, so alternating current is unable to excitation and picks up.
(2) prevent power supply from mixing road
Since A/B net has dedicated isolating transformer respectively, that is, isolated from power Protection Code is used, so A net and B net are equal
It powers for independent current source, therefore when being mixed into other power supplys in circuit, closed circuit will not be constituted, thus indicate that relay will not
Malfunction.
As shown in figure 5, the core of monitoring foreign bodies control unit of the invention is one by the different of DC power supply power supply
Object, which invades limit, indicates that relay 34, the relay are powered by DC power anode by the first branch and second branch respectively, foreign matter
Invading limit indicates that the cathode feeder ear of relay 34 is connected with DC power cathode；
The first branch includes that A netlist shows that the 1# contact switch 31 of relay, B netlist show 32 and of 1# contact switch of relay
The contact switch 33 of foreign body intrusion expression relay；DC power anode shows the 1# contact switch 31 and B of relay by A netlist
After netlist shows the 1# contact switch 32 of relay circuit in parallel, indicating that the contact switch 33 of relay is connected with foreign body intrusion
Afterwards, being connected in foreign body intrusion indicates the positive feeder ear of relay 34；
Second branch includes that A netlist shows that the 2# contact switch 35 of relay, B netlist show 36 and of 2# contact switch of relay
Dispatch the contact switch 37 of reset relay；DC power anode shows the 2# contact switch 35 of relay, B netlist by A netlist
After the series circuit that the contact switch 37 of the 2# contact switch 36 and scheduling reset relay that show relay forms, it is connected in foreign matter
Invading limit indicates the positive feeder ear of relay 34.
Wherein scheduling reset relay includes in relay assembly unit 3, and control centre issues scheduling and restores after instructing,
It is scheduling reset relay driving coil excitation power-up by the PLC control unit 1 of indoor machine.Reset relay is dispatched to use
JWJXC-H340 type is slow to put type relay, its contact switch is on state when scheduling reset relay excitation is powered on, and extends one
It is disconnected automatically after the section time, usual delay time is 5s, and wherein DC power supply is DC24V.
Arrow indicates each relay working condition under normal operating conditions in Fig. 5, and " ↑ " indicates A netlist under normal condition
Show that relay, B netlist show that relay, foreign body intrusion indicate that relay is the state that picks up, the contact of corresponding relay is to connect in figure
Logical state；" ↓ ", indicates that normal operating conditions dispatching reset relay is full state, and corresponding contact is off-state in figure.
That is A netlist show 1 excitation of polar biased relay power-up when, A netlist show the 1# contact switch 31 of relay and A netlist show after
The 2# contact switch 35 of electric appliance is on state；When B netlist shows the power-up of 13 excitation of polar biased relay, B netlist shows relay
1# contact switch 32 and B netlist show that the 2# contact switch 36 of relay is on state.The contact of foreign body intrusion expression relay
It is open-circuit condition when switch 33 is flat, only when foreign body intrusion indicates the power-up of 34 excitation of relay, foreign body intrusion indicates relay
Contact switch 33 become on state.
Its working principle is that the foreign body intrusion picked up by itself indicates after foreign body intrusion indicates that relay 34 picks up
The contact switch 33 and A netlist of relay show that the 1# contact switch 31 of relay or B netlist show 2 structure of 1# contact switch of relay
At closed circuit.When A netlist shows that relay failure is fallen, show that relay energized contact 24V controls power supply by B netlist
Just；When B netlist shows that relay failure is fallen, show that relay energized contact 24V controls positive pole by A netlist, only
When having the A netlist being mutually redundant to show that relay, B netlist show relay while falling, cutting 24V controls positive pole power supply ability
Foreign body intrusion is set to indicate that 34 power loss of relay is fallen.When the A netlist for respectively indicating outdoor live redundant network normal ON show after
When electric appliance, B netlist show that relay excitation picks up, outdoor circuit is indicated in normal condition, control centre is transmittable at this time orders
Order makes foreign body intrusion circuit restore normal, and PLC will dispatch reset relay driving excitation at this time, and connecting foreign body intrusion at this time indicates
The coil circuit of relay 34.Scheduling reset relay puts type relay using slow, when foreign body intrusion indicates relay excitation electricity
It when road is connected, is put by the way that scheduling reset relay is slow, extending foreign body intrusion indicates that relay excitation circuit extends turn-on time, protects
Card foreign body intrusion indicates that relay reliably picks up.
When practical application, along high-speed rail across two sets of isolated power network state feedback modules are arranged on railroad bridge parallel,
Indoor control circuit is connected to by cable with outdoor electric network state feedback module under normal condition, and the bis- power grids of A/B indicate relay
It picks up, forms real-time foreign matter monitoring network.
(1) alarm principle
When having under pendant object (such as vehicle falls down from the bridge) pendant on bridge, electric network state feedback module 16 can be damaged, cause it is indoor with
Outdoor liaison circuit interrupts, and the bis- power grids of A/B is caused to indicate that relay is fallen, then indoor to be provided by the control of logic circuit
Warning message.
(2) restore process
If foreign matter intrusion or electric network fault occurs in scene, when scene rush to repair finishes, the indoor bis- power grids of A/B indicate relay
Device picks up, and what control centre need to confirm foreign body intrusion system can access running control system, then by control centre to different
The PLC that object invades limit system sends scheduling and restores order, and scheduling reset relay picks up, and restores foreign body intrusion logic control circuit
Normal condition finally ensures the redundancy of double net power supplies and the reliability and safety of foreign body intrusion control.
Claims (8)
1. a kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system, it is characterised in that: including by DC power supply just
Pole indicates relay (34) by the foreign body intrusion that the first branch and second branch are powered respectively, and foreign body intrusion indicates relay
(34) cathode feeder ear is connected with DC power cathode；
The first branch includes that A netlist shows that the 1# contact switch (31) of relay, B netlist show the 1# contact switch of relay
(32) and foreign body intrusion indicate relay contact switch (33)；DC power anode shows the contact 1# of relay by A netlist
After switch (31) and B netlist show the circuit of 1# contact switch (32) parallel connection of relay, relay is being indicated with foreign body intrusion
After contact switch (33) series connection, being connected in foreign body intrusion indicates the positive feeder ear of relay (34)；
The second branch includes that A netlist shows that the 2# contact switch (35) of relay, B netlist show the 2# contact switch of relay
(36) and scheduling reset relay contact switch (37)；DC power anode shows the 2# contact switch of relay by A netlist
(35), B netlist shows the 2# contact switch (36) of relay and dispatches the series electrical of contact switch (37) composition of reset relay
Lu Hou, being connected in foreign body intrusion indicates the positive feeder ear of relay (34)；
The A netlist shows relay work in A power grid power-supplying circuit, and A power grid power-supplying circuit includes isolation transformation
Device (11), polar biased relay (13), rectistack (15), capacitor (14), resistance (12) and electric network state feedback module (16), partially
It is concatenated after pole relay (13) is in parallel with capacitor (14) with resistance (12), the both ends of sequential circuit are connect respectively in isolating transformer
(11) two output ends, after electric network state feedback module (16) is connected with rectistack (15), both ends are connected in parallel on polar biased respectively
Two endpoints of relay (13)；A netlist shows that relay is the polar biased relay (13) in A power grid power-supplying circuit；
The electric network state feedback module (16) be setting along the railway across on railroad bridge mesh transmission conducting wire or often
Make and break is closed.
2. a kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system according to claim 1, feature exist
In: B netlist show relay work in B net power-supplying circuit, B power grid power-supplying circuit include isolating transformer (11),
Polar biased relay (13), rectistack (15), capacitor (14), resistance (12) and electric network state feedback module (16), polar biased relay
It is concatenated after device (13) is in parallel with capacitor (14) with resistance (12), the both ends of sequential circuit are connect respectively in isolating transformer (11)
Two output ends, after electric network state feedback module (16) is connected with rectistack (15), both ends are connected in parallel on polar biased relay respectively
(13) two endpoints；B netlist shows that relay is the polar biased relay (13) in B power grid power-supplying circuit.
3. a kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system according to claim 1, feature exist
In: scheduling reset relay is included in relay assembly unit (3), and control centre issues scheduling and restores after instructing, by interior
The PLC control unit (1) of cabinet-type air conditioner is scheduling reset relay driving coil excitation power-up.
4. a kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system according to claim 1, feature exist
In: scheduling reset relay puts type relay using slow, its contact switch is conducting shape when scheduling reset relay excitation is powered on
State disconnects automatically after extending a period of time.
5. a kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system according to claim 1, feature exist
In: A netlist show polar biased relay (13) excitation power-up when, A netlist show the 1# contact switch (31) of relay and A netlist show after
The 2# contact switch (35) of electric appliance is on state.
6. a kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system according to claim 1, feature exist
In: B netlist show polar biased relay (13) excitation power-up when, B netlist show the 1# contact switch (32) of relay and B netlist show after
The 2# contact switch (36) of electric appliance is on state.
7. a kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system according to claim 1, feature exist
In: when foreign body intrusion indicates the power-up of relay (34) excitation, foreign body intrusion indicates that the contact switch (33) of relay is conducting
State.
8. a kind of monitoring foreign bodies control unit of railway foreign body intrusion monitoring system according to claim 1, feature exist
In: scheduling reset relay, which is that JWJXC-H340 type is slow, puts type relay.
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| CN201711041074.XA CN107776612B (en) | 2017-10-30 | 2017-10-30 | The monitoring foreign bodies control unit of railway foreign body intrusion monitoring system |
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| CN113562028B (en) * | 2021-07-08 | 2023-06-30 | 中车南京浦镇车辆有限公司 | Rail vehicle contact type obstacle detection circuit and obstacle detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144651A (en) * | 2012-12-27 | 2013-06-12 | 北京佳讯飞鸿电气股份有限公司 | Foreign invasion limiting monitoring system orienting to railway disaster prevention |
| CN105172843A (en) * | 2015-08-19 | 2015-12-23 | 中铁二十四局集团上海电务电化有限公司 | Interface structure between disaster-preventing foreign matter invasion limiting system and signal system of high-speed rail and method of interface structure |
| CN106019992A (en) * | 2016-05-27 | 2016-10-12 | 中铁二十四局集团上海电务电化有限公司 | System debugging method for high speed rail disaster prevention and foreign object intrusion prevention system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004355347A (en) * | 2003-05-29 | 2004-12-16 | Matsushita Electric Ind Co Ltd | Intrusion detection method and apparatus using it |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144651A (en) * | 2012-12-27 | 2013-06-12 | 北京佳讯飞鸿电气股份有限公司 | Foreign invasion limiting monitoring system orienting to railway disaster prevention |
| CN105172843A (en) * | 2015-08-19 | 2015-12-23 | 中铁二十四局集团上海电务电化有限公司 | Interface structure between disaster-preventing foreign matter invasion limiting system and signal system of high-speed rail and method of interface structure |
| CN106019992A (en) * | 2016-05-27 | 2016-10-12 | 中铁二十四局集团上海电务电化有限公司 | System debugging method for high speed rail disaster prevention and foreign object intrusion prevention system |
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