JP4744487B2 - Train information transmission / reception system - Google Patents

Description

  The present invention relates to a train information transmission / reception system that controls various types of information in order to monitor, control, and inspect various electrical components mounted on a train, and that transmits and receives various types of information across vehicles within a train train. is there.

  2. Description of the Related Art Conventionally, in an automobile electrical system in which electric power is supplied from a DC power source to a semiconductor power converter via a semiconductor power converter, a conductive material, a first insulating material, and a thin plate-like static wire are connected to the wiring from the DC power source to the semiconductor power converter. An electric shield material, a second insulating material, and a thin plate-shaped magnetic shield material are used concentrically in order from the center, a main current is passed through the conductive material, and one end of the electrostatic shield material Is connected to the ground potential of the semiconductor power converter, and one end of the magnetic shield material is connected to the housing of the semiconductor power converter (for example, see Patent Document 1). The shield of this electrical system is grounded on one side.

JP 2002-051403 A (FIG. 1)

  Since railway vehicles are equipped with devices that generate noise such as motors and inverters, a transmission path having noise resistance must be provided in order to perform high-speed transmission of information between vehicles. In order to ensure noise resistance, a cable with a shielding layer (shielding layer) intended to shield noise is used in the transmission line.

  Generally, the shielding effect is enhanced by grounding the shield layer at two locations on both ends of the cable. However, in a railway vehicle, the potential of the vehicle body ground is not constant, and the potential varies depending on the location and time. Therefore, if the shield is grounded to the vehicle body at two locations on both ends, a large amount of current may flow through the shield and burn out. There is. Therefore, grounding is performed only at one place on one side. In particular, caution is necessary because the potential difference is large between vehicles.

  In the technique described in Patent Document 1 described above, the shield layer is grounded only at one place on one side. However, the technique is applied to an automobile, and is an information transmission path between vehicles connected like a train. It cannot be applied to.

  In railway vehicles, vehicle crossover cables are used to electrically connect adjacent vehicles. A jumper cable in which a plurality of types of electric wires are bundled is used as a vehicle crossover cable. There is also a relief jumper cable that connects the minimum necessary signal lines and power lines so that the train can be towed by another train of a different type in case of a vehicle failure.

  When using shielded wires with these jumper cables, the direction of the jumper cable must be considered so that the shield layer is connected to one location, and the vehicle must be organized so that the direction of the vehicle is not changed. It was inconvenient in terms of operation. Therefore, the shield layer is often used without being connected anywhere (not grounded), and there is a problem that the shielding effect of the shield layer is not sufficiently exhibited.

  The present invention has been made in view of the above, and does not restrict the organization and operation of a vehicle, and can be used even in an environment where there is a large amount of external noise. A jumper cable for a vehicle crossover cable has been newly developed. Therefore, an object of the present invention is to obtain a train information transmission / reception system capable of transmitting information at a higher speed than before.

In order to solve the above-described problems and achieve the object, the present invention is mounted on each of a plurality of vehicles constituting one train, and is an information transmission / reception apparatus that performs train information processing in cooperation with each other, First and second vehicle-side connectors respectively installed at both ends of the vehicle and having a ground terminal and a plurality of signal transmission path terminals grounded to the vehicle, and the first and second vehicle-side connectors, respectively. First and second in-vehicle wirings having a plurality of signal transmission paths for connecting a plurality of signal transmission path terminals and the information transmitting / receiving device, and a shield layer that is grounded to the vehicle and shields the plurality of signal transmission paths. A cable, and first and second connecting ground terminals and a plurality of connecting signal transmission path terminals which can be fitted to the ground terminal and the plurality of signal transmission path terminals of the first and second vehicle side connectors, respectively, at both ends. The second crossover connector S mounted, first, a plurality of crossover signal transmission line connecting a plurality of connecting the signal transmission line terminals of the second crossover connectors, and the entire crossover signal transmission path of the plurality of surrounding a single shielding layer A vehicle transition cable having a shield layer that is shielded and connected only to one of the respective transition ground terminals of the first and second transition connectors, and the first vehicle side of one adjacent vehicle The connector and the first transition connector of the vehicle transition cable are connected, and the second vehicle side connector of the other adjacent vehicle and the second transition connector of the vehicle transition cable are connected to each other between adjacent vehicles. It characterized that you configure a transmission path.

According to the present invention, operation of the vehicle is not restricted, it can be used even in an environment with a large external noise, and there is no need to newly develop a jumper cable for a vehicle crossover cable. There is an effect that a train information transmission / reception system capable of transmitting the train is obtained. In addition, even when there is a potential difference between adjacent vehicles, a jumper cable using a normal shield cable without using a special cable can provide a shielding effect without being conscious of the connection direction, and the current due to the potential difference can be shielded. There is an effect that it does not flow and burn out.

  Embodiments of a train information transmission / reception system according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment FIG. 1 is a diagram showing a schematic configuration of a typical train information transmission / reception system, and FIG. 2 is a diagram showing a configuration of a transmission path of the train information transmission / reception system.

  As shown in FIG. 1, the information transmitting / receiving device 10 is mounted on each vehicle 201 of a train 200, and the information transmitting / receiving devices 10 mounted on adjacent vehicles 201, 201 are connected by a transmission path 11.

  As shown in FIG. 2, the transmission line 11 includes a first in-vehicle wiring cable 21, a first vehicle-side connector 21 a, a first transition connector 61, a vehicle transition cable 60, and a second transition connector. 62, the 2nd vehicle side connector 22a, and the 2nd in-vehicle wiring cable 22 are connected.

  The information transmitting / receiving apparatus 10 includes a first in-vehicle wiring cable 21, a first vehicle side connector 21a, a first transition connector 61, a vehicle transition cable 60, a second transition connector 62, a second vehicle side connector 22a, and Via the second in-vehicle wiring cable 22, it is connected to the information transmitting / receiving device 10 that is connected and mounted on an adjacent vehicle.

  The first vehicle-side connector 21a is installed at the front end of the vehicle, and the second vehicle-side connector 22a is installed at the rear end. The first and second transition connectors 61 and 62 are attached to the vehicle transition cable 60. One of the first and second transition connectors 61 and 62 is fitted to the first vehicle-side connector 21a, the other is fitted to the second vehicle-side connector 22a, and the first in-vehicle wiring cable 21, the vehicle crossover cable 60, and the second in-vehicle wiring cable 22 are connected.

  FIG. 3 is a cross-sectional view of the vehicle crossover cable 60 according to the embodiment. A jumper cable in which a plurality of types of cables are bundled is used as the vehicle crossover cable 60. The vehicle crossover cable 60 is obtained by coating a bundle of a plurality of shielded twisted pair electric wires 80, a plurality of shielded electric wires 33, and a plurality of non-shielded electric wires 32 with a sheath (protective coating) 34.

  There are various types of electric wires, electric wire arrangements and wire diameters of the vehicle transfer cable, and the vehicle transfer cable of the present invention is not limited to the vehicle transfer cable 60 of the embodiment.

  FIG. 4 is a cross-sectional view of an unshielded electric wire. The unshielded electric wire 32 is obtained by covering an electric wire 35 with a cylindrical insulating layer 37.

  FIG. 5 is a cross-sectional view of the shielded electric wire. The shielded electric wire 33 covers the electric wire 35 with a cylindrical insulating layer 38, the insulating layer 38 is covered with a shield layer (shielding layer) 36 knitted with a copper wire or the like, and the shield layer 36 is further cylindrical. The insulating layer 39 covers the structure.

FIG. 6 is a cross-sectional view of a shielded twisted pair electric wire. The twisted pair electric wire 80 is formed by twisting two insulated wires obtained by covering the wires 85 and 85 as the crossing signal transmission path with the cylindrical insulating layers 87 and 87, covering the periphery with the shield layer 86, and surrounding the sheath ( (Protective coating) 84.

  Since the jumper cable used for the vehicle crossover cable 60 that directly passes between the vehicles is required to have high mechanical strength, a hard copper wire is contained in the center of the electric wires 35 and 85 in the jumper cable, and the soft copper wire is surrounded around the wire. Are twisted together to form the electric wires 35 and 85.

  FIG. 7 shows a cross section of a shielded twisted pair electric wire used as the first and second in-vehicle wiring cables 21 and 22, and the cylindrical insulating layers 27 and 27 are covered around the electric wires 25 and 25. Two insulated wires are twisted together, covered around with a shield layer 26, and covered around with a sheath (protective coating) 24.

Generally shielded cables are resistant to external noise. On the other hand, trains are equipped with various high-voltage or high-frequency electric devices, and noise is always generated. Accordingly, the first and second in-vehicle wiring cables 21 and 22 shown in FIG. 7 are used as transmission lines in the vehicle. Moreover, in the part which crosses between vehicles, the twisted pair electric wire 80 shielded from the electric wires which comprise the vehicle connecting cable 60 is selected, and it uses as a transmission line.

  8-12 is a figure which shows a typical train information transmission / reception system typically.

  In the train information transmission / reception system shown in FIG. 8, the first and second vehicle-side connectors 21 a and 22 a are ground terminals connected to the vehicle bodies 101 and 101 of the vehicles 201 and 201 via the shield ground wires 100 and 100, respectively. 21b and 22b, and two (plural) signal transmission line terminals 21c and 22c, respectively.

  The first and second in-vehicle wiring cables 21 and 22 respectively connect the two (plural) signal transmission path terminals 21c and 22c of the first and second vehicle side connectors 21a and 22a and the information transmitting / receiving device 10 respectively. A plurality of signal transmission paths (electric wires) 25 and 25 to be connected and shield layers 26 and 26 which are grounded to the vehicle bodies 101 and 101 of the vehicles 201 and 201 and shield the plurality of signal transmission paths 25 and 25 are provided.

  The vehicle crossover cable 60a has crossover ground terminals 61b and 62b that can be fitted to the ground terminals 21b and 22b of the first and second vehicle-side connectors 21a and 22a and the plurality of signal transmission line terminals 21c and 22c, respectively, at both ends. And first and second transition connectors 61 and 62 having a plurality of transition signal transmission path terminals 61c and 62c, respectively, and a plurality of transition signal transmission path terminals 61c of the first and second transition connectors 61 and 62, respectively. The plurality of transition signal transmission paths 85 and 85 connecting the 62c and the plurality of transition signal transmission paths 85 and 85 are shielded and connected to both the first and second transition connectors 61 and 62. A twisted pair electric wire 80 is provided.

  That is, in the train information transmission / reception system shown in FIG. 8, the shield layer 86 is connected to the grounding terminal 61b of the first and second transition connectors 61, 62 at the two ends of the shielded twisted pair electric wire 80 of the vehicle transition cable 60a. 62b, the first and second vehicle-side connectors 21a and 22a are grounded to the vehicle bodies 101 and 101 via the ground terminals 21b and 22b and the shield ground wires 100 and 100, respectively.

  In the train information transmission / reception system shown in FIG. 8, in a railway vehicle in which the potential of the vehicle body is not constant depending on the location, a large amount of current may flow through the shield layer 86 and burn out.

  In the train information transmission / reception system shown in FIG. 9, the shield layer 86 is formed only at one place on one side of the shielded twisted pair electric wire 80 of the vehicle connecting cable 60, the connecting ground terminal 61 b of the first connecting connector 61, and the first vehicle side. The vehicle body 101 is grounded via the ground terminal 21 b of the connector 21 a and the shield ground wire 100.

  FIG. 10 shows a state in which the vehicle connecting cable 60 is connected in the opposite direction to the connection state shown in FIG. 9. In this state, the shield layer 86 is not grounded to the vehicle body 101 on either side.

  In the connection state shown in FIG. 10, since the shield layer 86 of the vehicle crossover cable 60 is not grounded, the effect of shielding external noise is small. In the train information transmission / reception system shown in FIG. 9, when the direction of the vehicle 201 changes, the connection state shown in FIG. 11 is established, and the connection state shown in FIG. Less is.

  In order to secure the grounding state as shown in FIG. 9 and obtain a sufficient external noise shielding effect, it is necessary to connect the vehicles 201 in consideration of not only the direction of the vehicle connecting cable 60 but also the direction of the vehicle 201. is there.

  In the train information transmission / reception system shown in FIG. 12, the shield layer 86 of the shielded twisted pair electric wire 80 of the vehicle connecting cable 60b is not grounded to the vehicle body. Even if the direction of the vehicle transition cable 60b and the direction of the vehicle 201 are changed, the same connection state is obtained. Therefore, it is not necessary to consider the direction of the vehicle transition cable 60b and the vehicle 201 when connecting the train 200. The connection state shown in FIGS. 10 and 11 is the same in that the external noise shielding effect cannot be obtained.

  FIG.13 and FIG.14 is a figure which shows embodiment of the train information transmission / reception system 205 of this invention. As shown in FIG. 13, the first and second vehicle-side connectors 21a and 22a installed at both ends of the respective vehicles 201 and 201 are connected to the vehicle body 101 and 101 of the vehicles 201 and 201 with the shield ground wire 100, Each of the ground terminals 21b and 22b is grounded via 100 and two (a plurality) of signal transmission line terminals 21c and 22c are provided.

  The first and second in-vehicle wiring cables 21 and 22 respectively connect the two (plural) signal transmission path terminals 21c and 22c of the first and second vehicle side connectors 21a and 22a and the information transmitting / receiving device 10 respectively. A plurality of signal transmission paths 25 and 25 to be connected and shield layers 26 and 26 which are grounded to the vehicle bodies 101 and 101 of the vehicles 201 and 201 and shield the plurality of signal transmission paths 25 and 25 are provided.

  The vehicle crossover cable 60 has crossover ground terminals 61b and 62b that can be fitted to both ends of the ground terminals 21b and 22b of the first and second vehicle-side connectors 21a and 22a and the plurality of signal transmission line terminals 21c and 22c, respectively. And first and second transition connectors 61 and 62 each having a plurality of transition signal transmission path terminals 61c and 62c, and a plurality of transition signal transmission paths of the first and second transition connectors 61 and 62, respectively. A plurality of transition signal transmission paths 85, 85 for connecting the terminals 61c, 62c, and a plurality of transition signal transmission paths 85, 85 to shield the respective transition ground terminals 61b of the first and second transition connectors 61, 62; The twisted pair electric wire 80 which has the shield layer 86 connected only to one side of 62b is provided.

  That is, the train information transmission / reception system 205 of the embodiment shown in FIG. 13 connects the shield layer 86 of the twisted pair electric wire 80 to the transition ground terminal 61b of one (first) transition connector 61 of the vehicle transition cable 60, and the other It is not connected to the transition ground terminal 62b of the (second) transition connector 62.

  On the other hand, on the vehicles 201 and 201 side, shielded ground wires 100 and 100 grounded to the vehicle bodies 101 and 101 are connected to ground terminals 21b and 22b of the vehicle-side connectors 21a and 22a, respectively. In this state, when the first and second crossover connectors 61 and 62 of the vehicle crossover cable 60 are connected to the first and second vehicle-side connectors 21a and 22a, respectively, the shield layer 86 is attached only to one vehicle body 101. Connected.

  FIG. 14 shows a state in which the vehicle connecting cable 60 is connected in the opposite direction to the connection state shown in FIG. 13. In this state as well, the shield layer 86 is connected only to one vehicle body 101. Thus, the shield layer 86 of the vehicle transition cable 60 can be grounded only to one vehicle body 101 without considering the orientation of the vehicle transition cable 60 and the vehicles 201 and 201.

  Note that a plurality of shielded wires 33 may be used instead of the twisted pair wires 80 as the crossing signal transmission path of the vehicle connecting cable 60.

  According to the train information transmission / reception system 205 of the embodiment, even when the information transmission / reception devices 10, 10 mounted on separate vehicles 201, 201 transmit information via the vehicle crossover cable 60, Even if the direction of the cable 60 and the direction of the vehicles 201 and 201 are not taken into consideration, a sufficient external noise shielding effect can be ensured and information can be transmitted at a higher speed than before.

  As described above, the train information transmission / reception system according to the present invention is useful as a train information transmission / reception system for trains with different vehicle formations.

It is a figure which shows the structure of a typical train information transmission / reception system. It is a figure which shows the structure of the transmission line of a train information transmission / reception system. It is sectional drawing of the vehicle crossover cable of embodiment. It is sectional drawing of an unshielded electric wire. It is sectional drawing of a shield electric wire. It is sectional drawing of the shielded twisted pair electric wire. It is sectional drawing of the shielded twisted pair electric wire. It is a figure which shows a general train information transmission / reception system. It is a figure which shows a general train information transmission / reception system. It is a figure which shows a general train information transmission / reception system. It is a figure which shows a general train information transmission / reception system. It is a figure which shows a general train information transmission / reception system. It is a figure which shows embodiment of the train information transmission / reception system of this invention. It is a figure which shows embodiment of the train information transmission / reception system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Information transmitter / receiver 11 Transmission path 21 1st in-vehicle wiring cable (a twist pair electric wire is included )
21a First vehicle-side connector 21b Ground terminal 21c Signal transmission path terminal 22 Second in-vehicle wiring cable ( including twisted pair electric wire)
22a Second vehicle side connector 22b Ground terminal 22c Signal transmission line terminal 24, 39, 84 Sheath (protective coating)
25, 35, 85 Electric wire 26, 36, 86 Shield layer (shield layer)
27, 37, 38, 87 Insulating layer 32 Non-shielded wire 33 Shielded wire 60 Vehicle transition cable 61 First transition connector 61b Transition ground terminal 61c Transition signal transmission path terminal 62 Second transition connector 62b Transition ground terminal 62c Transition signal transmission Road terminal 80 Shielded twisted pair electric wire 100 Shield ground wire 101 Car body 200 Train 201 Vehicle 205 Train information transmission / reception system

Claims (2)

An information transmitting / receiving device mounted on each of a plurality of vehicles constituting one train and performing train information processing in cooperation with each other;
First and second vehicle side connectors respectively installed at both ends of the respective vehicles, each having a ground terminal and a plurality of signal transmission path terminals grounded to the vehicle;
A plurality of signal transmission paths connecting the plurality of signal transmission path terminals of each of the first and second vehicle-side connectors and the information transmitting / receiving device; and a shield that is grounded to the vehicle and shields the plurality of signal transmission paths First and second in-vehicle wiring cables having layers;
The first and second transition ground terminals and the plurality of transition signal transmission path terminals that can be respectively fitted to the ground terminals and the plurality of signal transmission path terminals of the first and second vehicle side connectors at both ends. over connector are respectively mounted, first, a plurality of crossover signal transmission line, and the plurality of crossover signal transmission path the entire single shielding layer connecting the plurality of the crossover signal transmission line terminals of the second crossover connectors the vehicle over the cable having a shield layer that is connected to only one of the shield and the first, each of the connecting ground terminal of the second crossover connector surrounds at,
The first vehicle side connector of one adjacent vehicle and the first transition connector of the vehicle transition cable, and the second vehicle side connector of the other adjacent vehicle and the vehicle transition train information transmission and reception system by connecting the second crossover cable connector characterized that you configure a transmission path between adjacent vehicles.   The train information transmission / reception system according to claim 1, wherein the first and second in-vehicle wiring cables and the vehicle crossover cable have twisted pair electric wires as signal transmission paths.

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