CN203689673U - Railway-vehicle current loop filtering device - Google Patents
Railway-vehicle current loop filtering device Download PDFInfo
- Publication number
- CN203689673U CN203689673U CN201320539621.8U CN201320539621U CN203689673U CN 203689673 U CN203689673 U CN 203689673U CN 201320539621 U CN201320539621 U CN 201320539621U CN 203689673 U CN203689673 U CN 203689673U
- Authority
- CN
- China
- Prior art keywords
- common
- current loop
- mode filter
- electric current
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model relates to a railway-vehicle current loop filtering device which comprises a control device and electrical equipment, wherein the control device and the electrical equipment are arranged on a railway vehicle and are connected with each other through a current loop, and a common-mode filter is arranged on the current loop. The railway-vehicle current loop filtering device with a simple structure is provided with the common-mode filter, thereby filtering out common-mode signals in the same direction in a circuit, causing effective common-mode signals to pass in an undamaged manner, and solving the interference problem of a communication circuit of the railway-vehicle current loop. The railway-vehicle current loop filtering device has the advantages of simple structure, no power supply, miniaturization and no influence on the original communication circuit.
Description
Technical field
The utility model relates to a kind of filter, particularly a kind of rail vehicle electric current loop filter.
Background technology
At present the domestic rail vehicle speed per hour that runs on main line railway reached 380 kilometers and more than, thereby vehicle power and control system have been proposed to more strict design and usability requirement.
Existing motor train unit respectively saves between electrical equipment in compartment and vehicle central device and end device and realizes signal transmission by electric current loop communication cable, and such as train supervision display, display control unit, range sensor etc. are realized signal transmission with central means by electric current loop communication cable; Air-conditioning control, accessory power supply, guidance information display etc. are realized signal transmission with end device by electric current loop communication cable, but due to extraneous interference, have the bad problem of transmission.Current solution is to change electric current loop communication cable routing path, but this method exists certain shortcoming, changes routing path and need to wait for when train returns the senior maintenance of factory, carries out after removing a large amount of jamming equipments, and cost is high, and effect is undesirable.Also having a kind of method is that the equipment of electric current loop communication is laid as far as possible nearby, avoid interference in the mode that shortens communication line length the transmission bad error causing, but exist again existing vehicle device layout not allow the shortcoming of laying nearby, and the anti-jamming effectiveness of this mode is also not ideal enough.
Utility model content
The utility model fundamental purpose is to address the above problem and is not enough, provides a kind of simple in structure, the rail vehicle electric current loop filter that interference suppressioning effect is good.
For achieving the above object, the technical solution of the utility model is:
A kind of rail vehicle electric current loop filter, comprises the control device and the electrical equipment that are arranged on rail vehicle, between described control device and electrical equipment, is connected by electric current loop, on described electric current loop, is provided with common-mode filter.
Further, common-mode filter arranges four, is respectively the first common-mode filter, the second common-mode filter, the 3rd common-mode filter, the 4th common-mode filter.
Further, the first common-mode filter is arranged on the current ring communication cable of transmitting terminal of described control device, described the second common-mode filter is arranged on the current ring communication cable of receiving end of described control device, described the 3rd common-mode filter is arranged on the current ring communication cable of transmitting terminal of described electrical equipment, and described the 4th common-mode filter is arranged on the current ring communication cable of receiving end of described electrical equipment.
Further, in the boring of the car body position at described common-mode filter place, the ground wire of described common-mode filter is by described boring ground connection.
To sum up content, a kind of rail vehicle electric current loop filter described in the utility model, simple in structure, by common-mode filter is set, by equidirectional common-mode signal filtering in circuit, and make that effective difference mode signal is harmless to be passed through, solved the interference problem of rail vehicle current-loop communication circuit, and have simple in structure, without power supply, miniaturization, former communicating circuit is not had to influential advantage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
As shown in Figure 1, control device 1, electrical equipment 2, first signal output module 3, first signal receiver module 4, secondary signal output module 5, secondary signal receiver module 6, the first common-mode filters 7, the second common-mode filter 8, the three common-mode filter 9, the four common-mode filters 10.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in Figure 1, a kind of rail vehicle electric current loop filter, for the electric current loop communication system of rail vehicle, the control device 1 in rail vehicle connects each electrical equipment 2 in car by electric current loop, and control device 1 is central means and end device.
On control device 1, be provided with first signal output module 3 and first signal receiver module 4, on electrical equipment 2, be provided with secondary signal output module 5 and secondary signal output module 6, described first signal output module 3 is connected respectively with secondary signal output module 5 and secondary signal receiver module 6 by electric current loop, and first signal receiver module 4 is connected respectively with secondary signal output module 5 and secondary signal receiver module 6 by electric current loop.
The transmitting terminal of control device 1 comprises two ports, connects respectively first signal output module 3 and first signal receiver module 4, and the receiving end of control device 1 comprises two ports equally, connects equally respectively first signal output module 3 and first signal receiver module 4.The transmitting terminal of electrical equipment 2 comprises two ports, and two ports connect respectively secondary signal output module 5, and the receiving end of electrical equipment 2 comprises two ports equally, and two ports connect respectively secondary signal receiver module 6.
On the electric current loop communication cable between control device 1 and electrical equipment 2, be symmetrically arranged with four common-mode filters, be respectively the first common-mode filter 7, the second common-mode filter 8, the 3rd common-mode filter 9 and the 4th common-mode filter 10.
The first common-mode filter 7 is arranged on the current ring communication cable of transmitting terminal of control device 1, the second common-mode filter 8 is arranged on the electric current loop communication cable of receiving end of control device 1, the 3rd common-mode filter 9 is arranged on the electric current loop communication cable of transmitting terminal of electrical equipment 2, and the 4th common-mode filter 10 is arranged on the current ring communication cable of receiving end of electrical equipment 2.
On each common-mode filter, be provided with common mode inductance, common mode inductance comprises that two coils are oppositely wound on an iron core, for eliminating common mode interference.
On cable between first signal output module 3 and secondary signal output module 5, connect coil of the first common-mode filter 7 and a coil of the 3rd common-mode filter 9 are set; On cable between first signal receiver module 4 and secondary signal output terminal 5, connect and be provided with another coil of the first common-mode filter 7 and another coil of the 3rd common-mode filter 9; On cable between first signal output module 3 and secondary signal receiver module 6, connect and be provided with coil of the second common-mode filter 8 and a coil of the 4th common-mode filter 10; On cable between first signal receiver module 4 and secondary signal receiver module 6, connect and be provided with another coil of the second common-mode filter 8 and another coil of the 4th common-mode filter 10.
In the time of control device 1 and electrical equipment 2 normal communication, two coil transmission communication signals on each common-mode filter and feedback signal, opposite current, produces reversed magnetic field and cancels out each other.Due to the same tropism of common-mode signal, produce magnetic field in the same way, thereby increase coil induction reactance, effectively eliminate common-mode signal.
The common-mode filter ground connection of holing is nearby holed near car body common-mode filter, and common-mode filter ground wire is through boring ground connection.
Can be by equidirectional common-mode signal filtering by common-mode filter, and make that effective difference mode signal is harmless to be passed through, improve the antijamming capability of electric current loop communication system.Whole filter is simple in structure, and without external power supply, miniaturization, does not affect former communication system, has realized the safe and reliable work of rail vehicle control circuit.
As mentioned above, given scheme content, can derive similar technical scheme by reference to the accompanying drawings.In every case be the content that does not depart from technical solutions of the utility model, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. a rail vehicle electric current loop filter, comprises the control device and the electrical equipment that are arranged on rail vehicle, between described control device and electrical equipment, is connected by electric current loop, it is characterized in that: on described electric current loop, be provided with common-mode filter.
2. rail vehicle electric current loop filter according to claim 1, is characterized in that: described common-mode filter arranges four, is respectively the first common-mode filter, the second common-mode filter, the 3rd common-mode filter, the 4th common-mode filter.
3. rail vehicle electric current loop filter according to claim 2, it is characterized in that: described the first common-mode filter is arranged on the current ring communication cable of transmitting terminal of described control device, described the second common-mode filter is arranged on the current ring communication cable of receiving end of described control device, described the 3rd common-mode filter is arranged on the current ring communication cable of transmitting terminal of described electrical equipment, and described the 4th common-mode filter is arranged on the current ring communication cable of receiving end of described electrical equipment.
4. rail vehicle electric current loop filter according to claim 1, is characterized in that: in the boring of the car body position at described common-mode filter place, the ground wire of described common-mode filter is by described boring ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539621.8U CN203689673U (en) | 2013-08-30 | 2013-08-30 | Railway-vehicle current loop filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539621.8U CN203689673U (en) | 2013-08-30 | 2013-08-30 | Railway-vehicle current loop filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203689673U true CN203689673U (en) | 2014-07-02 |
Family
ID=51011550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320539621.8U Expired - Lifetime CN203689673U (en) | 2013-08-30 | 2013-08-30 | Railway-vehicle current loop filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203689673U (en) |
-
2013
- 2013-08-30 CN CN201320539621.8U patent/CN203689673U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103081369B (en) | Power line communication system, power line communication device, and connector device | |
| US9287934B2 (en) | Communication device and communication system | |
| CN106165306A (en) | Communicator | |
| JP5903993B2 (en) | Communications system | |
| US9130659B2 (en) | Communication device and communication system | |
| CN203164332U (en) | Transformer DC magnetic bias characteristic testing apparatus | |
| WO2015012230A1 (en) | Plc signal repeating system | |
| US20150137620A1 (en) | Anti-interference switch signal transmission circuit | |
| JP4708068B2 (en) | Power line communication system | |
| CN203689673U (en) | Railway-vehicle current loop filtering device | |
| CN204719240U (en) | Nuclear magnetic resonance wide and narrow strip merges amplifier module | |
| KR20140025323A (en) | Inductive contactless energy and data transmission system | |
| CN201878154U (en) | Anti-electromagnetic interference device based on CAN (controller area network) bus | |
| CN102916669B (en) | Filter circuit | |
| CN103368649A (en) | Anti-interference transmission system for remote control signals of power grid | |
| CN102059991A (en) | CAN (controller area network) bus interface circuit for hybrid power automobile system | |
| Sohn et al. | Experiments of In-Vehicle Inductive High-Voltage Power Line Communication | |
| KR102176288B1 (en) | Signalling system | |
| CN206743201U (en) | A kind of rotary transformer and its coffret, the filter circuit of interface signal | |
| CN201413352Y (en) | Sensor device with strong interference resistance | |
| KR20120042798A (en) | Apparatus for detecting impair of rails and method using the same | |
| CN218587174U (en) | Communication isolation circuit and switching power supply | |
| CN104527664B (en) | Locomotive short-distance wireless communication control system | |
| CN216424424U (en) | Inductance box and coding system | |
| CN203521124U (en) | Transformer structure and charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Patentee after: CRRC QINGDAO SIFANG CO., LTD. Address before: Chengyang District of Qingdao city Jihongtan town Shandong city Qingdao province Jinhong road 266111 No. 88 Patentee before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |