JP2006001386A - Non-power supply ground unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-power supply ground unit which can be driven without receiving an electric wave from a train. <P>SOLUTION: The non-power supply ground unit transmits predetermined information from above the ground to the train. The driving power supply for transmitting the predetermined information comprises a power generation means for generating power by installing a coil so that part of the coil becomes parallel with the extension direction of the rails on which the train travels, and by inducing the current passing through the rails through the coil. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an unpowered ground unit used in a train control system such as ATS-P, and more particularly to a unit that can be driven without receiving a power wave from the vehicle.

  Conventionally, an unpowered ground element used in a train control system such as this type of ATS-P, that is, a ground element that does not require the installation of a cable for driving power, is transmitted from the vehicle (train) side. A drive power is generated by receiving a wave, and predetermined information is transmitted from the ground to the vehicle using the generated drive power (see Non-Patent Document 1).

That is, a conventional non-powered ground element is wound with a coil for receiving, for example, a 245 KHz power wave transmitted from the vehicle in the case of the non-powered ground element. It is configured to be able to receive a power wave from the vehicle when the train's vehicle is facing. Then, the signal current received by the coil is rectified via a rectifier circuit to be a driving power source for the transmitter, and when the transmitter is driven, predetermined information such as train position information is transmitted from the ground to the vehicle. The information is transmitted.
May 15, 1997 (Japan) Japan Railway Electrical Engineering Association "Introduction to Electricity for Railway Engineers Signal Series 7, ATS / ATC" 37,38

  However, since the conventional non-powered ground element receives a power wave from the upper side of the vehicle as a driving power source, a vehicle (train) that does not have a facility for transmitting a power wave on the vehicle is installed on the ground. There was the inconvenience that information could not be obtained from the non-powered ground element. In addition, even if the vehicle has equipment that transmits power waves on the vehicle, power wave transmission to the ground side is poor, or power wave reception has failed on the ground side However, the driving power required for transmission cannot be obtained on the ground side, and there is a risk of hindering transmission of information directed to the vehicle.

  Therefore, the present invention makes it possible to stably transmit information from the ground to the vehicle, and to obtain predetermined information from the ground side even in a vehicle that does not have a power wave transmission facility. It aims to provide a non-powered ground element.

In order to achieve the above object, a non-powered ground element according to the present invention is a non-powered ground element that transmits predetermined information from the ground toward the vehicle. The drive power supply for transmitting the information is laid out so that a part of the rail is parallel to the direction of extension of the rail on which the train travels, and the current flowing through the rail is induced through the coil to generate power. It is characterized by comprising power generation means.
The non-powered ground element according to claim 2 of the present invention is characterized in that the electric power induced through the coil is stored in the power storage device.
According to a third aspect of the present invention, the electric power stored in the power storage device is supplied through a switch circuit that operates when the train is located at a predetermined position. In the non-powered ground element according to claim 4 of the present invention, the coil also serves as a transmission coil for transmitting predetermined information from the ground toward the vehicle and an induction coil for inducing current flowing in the rail. It is characterized by that.
The non-powered ground element according to claim 5 of the present invention includes two types of coils: a transmission coil for transmitting predetermined information from the ground toward the vehicle and an induction coil for inducing current flowing in the rail. It is characterized by that.
The non-powered ground element according to claim 6 of the present invention is characterized in that a plurality of induction coils are provided.
The non-powered ground element according to claim 7 of the present invention is a non-powered ground element that transmits predetermined information from the ground toward the vehicle, and the drive power source for transmitting the predetermined information is the It is characterized by being obtained from a solar panel affixed to the casing of a non-powered ground element.
The non-powered ground element according to claim 8 of the present invention is characterized in that the electric power obtained from the solar panel is stored in the power storage device.
According to a ninth aspect of the present invention, there is provided the non-powered ground element according to the present invention, wherein the driving power source is further laid with a coil so that a part of the driving power supply is parallel to the extending direction of the rail, and the current flowing through the rail is supplied to the coil. It is characterized by being comprised by the electric power production | generation means to which it induces through and produces | generates electric power.
The non-powered ground element according to claim 10 of the present invention is characterized in that the electric power induced through the coil is stored in the power storage device.

In the non-powered ground element according to claim 1 of the present invention, the driving power source for transmitting predetermined information includes a coil laid so that a part of the driving power source is parallel to the extending direction of the rail on which the train travels. Is generated by power generation means that induces the current flowing through the coil through the coil to generate electric power, so that the electric power obtained on the ground side can be used on the vehicle without receiving a power wave from the vehicle. Predetermined information can be transmitted. Therefore, even if the vehicle does not have a power wave transmission facility, predetermined information can be obtained from the ground side.
In the non-powered ground element according to claim 2 of the present invention, the power induced through the coil is stored in the power storage device, so that more stable power can be prepared.
In the non-powered ground element according to claim 3 of the present invention, the electric power stored in the power storage device is supplied via a switch circuit that operates when the train is located at a predetermined position. Can be suppressed.
Since the non-powered ground element according to claim 4 of the present invention combines the transmission coil for transmitting predetermined information from the ground to the vehicle and the induction coil for inducing current flowing in the rail, Can be implemented at a cost.
Since the non-powered ground element according to claim 5 of the present invention has two types of coils, a transmission coil for transmitting predetermined information from the ground to the vehicle and an induction coil for inducing current flowing in the rail. The transmission of information on the vehicle can be stabilized.
Since the non-powered ground element according to claim 6 of the present invention includes a plurality of induction coils, a large amount of power can be secured.
In the non-power supply ground element according to claim 7 of the present invention, the drive power source for transmitting the predetermined information is obtained from the solar panel attached to the casing of the non-power supply ground element. Even if the signal is not received, the predetermined information can be transmitted toward the vehicle using the electric power obtained on the ground side. Therefore, even if the vehicle does not have a power wave transmission facility, predetermined information can be obtained from the ground side.
In the non-powered ground element according to claim 8 of the present invention, since the power obtained from the solar panel is stored in the power storage device, stable power can be prepared.
In the non-powered ground element according to claim 9 of the present invention, the driving power supply further lays a coil so that a part thereof is parallel to the extending direction of the rail on which the train travels, and the current flowing through the rail is supplied to the coil. Since it is configured by the power generation means that generates power by inducting through, a more stable driving power source can be obtained.
In the non-powered ground element according to claim 10 of the present invention, the power induced through the coil is stored in the power storage device, so that more stable power can be prepared.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a non-powered ground element a according to an embodiment, in which a rail (in the illustrated example, a rail) within a gauge of a pair of rails r1 and r2 traveled by a train (not shown). r1) It is provided near. In other words, the non-powered ground element a is provided at a position facing the vehicle upper element provided at the lower front portion of the train traveling on the rails r1 and r2.

  In the figure, reference numeral 1 denotes a casing of the non-powered ground element a, which is made of a synthetic resin capable of passing electromagnetic waves in the same manner as the known non-powered ground element casing, and its planar shape is rectangular. Presents. A coil C made of a conductive wire is wound around the inside of the housing 1. Therefore, a part of this coil is kept in parallel with one rail r1. A part of the coil C is kept in parallel with the other rail r2, but here the casing 1 is provided closer to the one rail r1, so that the rail r2 is connected to the coil C. The induced current which will be described later due to the rail r2 is small. Therefore, here, description will be given focusing on only the rail r1. The relationship between the rail r2 and the coil C will be described later with reference to FIGS. 3B, 3C, and 3D, but the position between the rails r1 and r2 is appropriately determined as to which position the casing 1 is to be installed. It is decided.

  In FIG. 1, "a" indicates the current flowing through the rail r1. This current a is, for example, a return current flowing between an overhead line (not shown) and the rail r1, or a track circuit current when the rail r1 forms a track circuit. In FIG. 1, B indicates the current induced in the coil C induced by the magnetic field generated by the current A flowing through the rail r1. This induced current is used as a driving power source for the unpowered ground element a, and its details are shown in FIG.

  In FIG. 2, reference numeral 2 denotes a rectifier circuit, which is connected to the coil C via a connection transformer t and rectifies the current induced in the coil C due to the current flowing in the rail r1, thereby storing the power of the present invention. It is comprised so that it can accumulate | store in the well-known storage battery (battery) 3 which consists of a lead storage battery, an alkaline storage battery, etc. which correspond to an apparatus. The storage battery 3 is configured to drive the information generation circuit 5 and the modulation circuit 6 via the switch circuit 4. In addition to the above-described storage battery, the power storage device may be another type of power storage device such as an electric double layer capacitor.

  The information generation circuit 5 and the modulation circuit 6 are configured in the same manner as the information generation circuit and the modulation circuit of the well-known unpowered ground unit, and information to be transmitted on a predetermined vehicle generated by the information generation circuit 5; For example, the position information is modulated by the modulation circuit 6 and then output to the coil C via the connection transformer t.

  In FIG. 2, reference numeral 7 denotes a receiving circuit formed including a filter and an amplifier, which is driven by the storage battery 3 and is configured so that a signal can be input from the coil C through the connection transformer t. . That is, the receiving circuit 3 is configured so as to be able to selectively receive a predetermined oscillation frequency f0 (for example, 103 KHz) that is constantly transmitted from a vehicle top 10 provided at the lower part of the top of a train (not shown). Yes. The switch circuit 4 can be turned on while receiving the oscillation frequency f0. The oscillation frequency f0 is a normal signal that is constantly transmitted from the vehicle upper body 10 in a train control system such as ATS.

  In the non-powered ground element a having the above-described configuration, a current is induced in the coil C by a current (return current, track circuit current) flowing in the rail r1, and the induced current is transferred to the storage battery 3 via the rectifier circuit 2. It is charged (charged). The storage battery 3 is always charged, while the discharge circuit is always discharged to the receiving circuit 7. However, the power consumption is small, and the power supply to the information generating circuit 5 and the modulation circuit 6 is performed by a non-powered ground element. Since it is the moment when the vehicle upper member 10 faces a (housing 1), there is no possibility that the storage battery 3 will run out of capacity. Rather, it is desirable to provide a well-known overcharge prevention device between the rectifier 2 and the storage battery 3 so that the storage battery 3 is not overcharged to cause performance deterioration. The capacity of the storage battery 3 is determined so as to be necessary and sufficient to drive the information generation circuit 5 and the modulation circuit 6, and when the storage battery 3 is built in the housing 1, It is also determined by the volume. Of course, the storage battery 3 can also be provided outside the housing 1.

  As described above, in a state where the storage battery 3 is sufficiently charged, when the train reaches the unpowered ground element a, that is, when the vehicle upper element 10 faces the casing 1, the receiving circuit 3 The oscillation frequency f0 transmitted from the vehicle upper member 10 is received, whereby the switch circuit 4 is turned on. When the switch circuit 4 is turned on, the information generation circuit 5 and the modulation circuit 6 are driven by the power of the storage battery 3, and predetermined information is transmitted from the coil 3 toward the vehicle. Predetermined information transmitted from the coil 3 is received via a coil (not shown) provided in the vehicle upper child 10 and used for train control.

  In the above example, the operation of the switch circuit 4 is received by using the receiving circuit 7 and the oscillation frequency f0 transmitted from the vehicle is turned on. It is also possible to detect the signal with the detection signal and to operate it according to the detection signal. Other train position detection means can be realized, for example, by detecting a train wheel using a magnetic field or by using a photoelectric element.

  In the above example, the storage battery 3, the switch circuit 4, and the receiving circuit 7 are used to transmit predetermined information from the ground toward the vehicle only when a train is detected. And based on the electric current induced by the coil C, you may make it always transmit predetermined information toward a vehicle. However, as described above, when the storage battery 3 is provided and predetermined information is transmitted based on the train detection signal, there is a feature that stable information transmission is possible.

  FIG. 3A shows an example in which the coil C is separately provided with a dielectric coil C1 for inducing current and a transmission coil C0 for transmitting predetermined information from the ground toward the vehicle. In this case, since the transmission coil C0 is separated from the dielectric coil C1, it can be expected to improve the quality of information transmission.

  The coil C ′ shown in FIG. 3B is similar to the coil C shown in FIG. 1 and FIG. 2 described above, but one coil is also used as an induction coil and a transmission coil. However, it has the characteristics. When the coils are laid in this way, the direction of the current flowing in one rail r1 and the direction of the current flowing in the other rail r2 are as follows. Since they face each other, the induced current is reduced in the case of a coil that is not twisted. However, as shown in FIG. 3 (b), in the case of the coil C ', the current induced by one rail r1 and the current induced by the other rail r2 are added, resulting in a larger induced current. There is a feature that can be obtained. In addition, although the stretching point of the coil C ′ is the central portion in the illustrated example, the current induced by moving to either side can be adjusted. The same applies to the coiled coils C1 and C0 'which will be described later.

  The coil C shown in FIG. 3 (c) is a coil C1 of a type in which an induction coil is stretched, and the transmission coil C0 is a coil of the same type as in FIGS. 1, 2 and 3 (a). In addition, the coil C shown in FIG. 3 (d) is a case in which the induction coil C1 and the transmission coil C0 'are both laid on each other.

  FIG. 4 shows a coil type when the current flowing through the rail r1 (see FIGS. 1 and 2) is small or when many induction coils C1 cannot be wound in the housing 1. That is, the coil C is characterized in that a plurality of induction coils C1, C2,. As described above, when a plurality of induction coils C1, C2,... Are provided, there is an effect that a large induction current can be obtained, and the number of coils arranged in the housing 1 can be reduced. The coil C on the left side in FIG. 4 may be the coil type shown in FIGS. 1, 2 and 3B, 3C, and 3D.

  The coil C shown in FIG. 5 has a plurality of induction coils C1, C2,... Shown in FIG. 4 as one large induction coil C1 '. There is an effect that a large induced current can be obtained by the amount of C1 '. In addition, it is possible to reduce the number of coils disposed in the housing 1. Note that the coil C on the left side in FIG. 5 may be in the form of the coil shown in FIGS. 1, 2, 3 (b), (c), and (d).

  A non-powered ground element a ′ according to another embodiment of the present invention shown in FIG. 6 has a solar panel (solar cell) 20 attached to the upper surface of the housing 1 and uses the power generated by the solar panel 20. The storage battery 3 (see FIG. 2) can be charged. Then, the electric power stored in the storage battery 3 is configured so that driving power can be supplied to the information generation circuit 5 and the modulation circuit 6 through the switch circuit 4 by train detection, as shown in FIG. Yes. In this way, even when the solar panel 20 is used as a drive power source, the induction coils C1, C1 'as shown in FIGS. 1 to 5 can be used. In this case, a stable power source can be secured even when sufficient sunlight is not obtained due to rain or the like.

It is a top view of the non-power-supply grounding element concerning one embodiment of the present invention. FIG. (A)-(d) is a form example of a coil. It is an example of a form of a coil. It is an example of a form of a coil. It is a perspective view of the non-powered ground unit concerning other forms of the present invention.

Explanation of symbols

r1, r2 rails a, a 'unpowered ground element 1 case 2 rectifier circuit 3 storage battery 4 switch circuit 5 information generation circuit 6 modulation circuit 7 reception circuit 20 transmission coil C, C' coils C1, C1 ', C2, C3 ... Induction coil C0, C0 'Transmitting coil

Claims (10)

A non-powered ground unit that transmits predetermined information from the ground to the vehicle,
The driving power source for transmitting the predetermined information is laid out with a coil so that a part of the rail is parallel to the direction in which the train travels, and the current flowing through the rail is induced through the coil to generate power. A non-powered ground element characterized by comprising power generation means for generation.   2. The non-powered ground element according to claim 1, wherein the power induced through the coil is stored in a power storage device.   The non-powered ground unit according to claim 2, wherein the power stored in the power storage device is supplied via a switch circuit that operates when the train is located at a predetermined position.   The non-power-supplying ground element according to any one of claims 1 to 3, wherein the coil is used both as a transmission coil for transmitting predetermined information from the ground toward the vehicle and an induction coil for inducing current flowing through the rail. A non-powered ground child characterized by   The non-power-supply grounding element according to any one of claims 1 to 3, wherein the coil includes two types: a transmission coil for transmitting predetermined information from the ground toward the vehicle and an induction coil for inducing current flowing through the rail. A non-powered ground element characterized by comprising   6. The non-powered ground unit according to claim 5, wherein a plurality of induction coils are provided. A non-powered ground unit that transmits predetermined information from the ground to the vehicle,
The power source for transmitting the predetermined information is obtained from a solar panel attached to a casing of the power sourceless ground unit.   8. The non-powered ground element according to claim 7, wherein electric power obtained from the solar panel is stored in a power storage device.   The non-power-supplying ground element according to claim 7 or 8, wherein the drive power supply further lays a coil so that a part thereof is parallel to an extension direction of the rail on which the train travels, and current flowing through the rail is passed through the coil. A non-powered ground unit comprising power generation means for inducting and generating power.   The powerless grounding element according to claim 9, wherein the power induced through the coil is stored in a power storage device.

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