JP2012253935A - On-board device and method of renewing and controlling speed check pattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To renew speed check pattern properly.SOLUTION: In an erroneous station passing prevention system 1, a ground device 10 transmits a target position information F that indicates a target stop position to a track circuit. An on-board device 30 sets up a speed check pattern based on the target position information F received from the rails. It is determined whether the speed check pattern is renewed based on the combination of the stop target position, which is the end of the speed check pattern set up, and a stop target position indicated by this time target position information F received, and a receiving interval of the previous and this time target position information F. When determined to be renewed, it is renewed to the speed check pattern based on the target position information F received this time at the timing when the target position information F received this time becomes not receivable.

Description

  The present invention relates to an on-board device or the like that performs speed check according to a speed check pattern.

  As a train speed control in a railway, a system is known in which a train control signal is transmitted from a ground device to a rail, and an on-board device performs a speed check by setting a speed check pattern based on the received train control signal ( For example, see Patent Document 1).

JP 2006-341775 A

  However, there are various techniques for when to update and set the speed verification pattern. One possible method is to update the speed check pattern based on the train control signal that has been received immediately before the train control signal can no longer be received (the time when the train control signal has advanced from the track circuit). However, this method can cause several problems. For example, there is a case where “instantaneous interruption” occurs in which the train control signal cannot be instantaneously received from the rail. When a momentary interruption occurs, the speed check pattern is updated and set at a timing that is not updated. In addition, when the stop target is updated to the previous speed check pattern at each timing at which the train control signal can no longer be received, there is a possibility that the meaning of protection is lost.

  This invention is made | formed in view of the said situation, The place made into the objective is to make it update a speed check pattern appropriately.

The first form for solving the above problem is
An on-board device (for example, an on-board device (for example, the ground device 10 in FIG. 1) that sends target position information indicating a stop target position is mounted on a train that travels on the rail laid along the track. On-vehicle device 30) of FIG.
Receiving means (for example, the power receiver 24 in FIG. 6) for receiving information sent to the rail;
Pattern setting means for setting a speed check pattern (for example, speed check pattern setting unit 312 in FIG. 6);
A speed checking means (for example, a speed checking unit 313 in FIG. 6) that performs speed checking according to the set speed checking pattern;
A receiving state detecting unit (for example, a speed check pattern setting unit 312 in FIG. 6) for detecting that the target position information is being received by the receiving unit;
Judgment means for determining whether or not to update the speed check pattern using a time interval until detection of the next reception state after the detection is not performed by the reception state detection means (for example, the speed in FIG. 6). A verification pattern setting unit 312),
With
The pattern setting means, when it is determined to be updated by the determination means, is updated and set to a speed check pattern for stopping the train at the target position indicated by the target position information received in the next reception state,
It is an on-vehicle device.

As another form,
A receiving device for receiving information sent to the rail, mounted on a train on which the ground device for sending the target position information indicating the stop target position to the rail runs on the rail laid along the track, A speed check pattern update control method performed by an on-board apparatus comprising pattern setting means for setting a speed check pattern and speed check means for performing speed check according to the set speed check pattern,
It is determined whether or not to update the speed check pattern using a time interval from the reception state where the target position information is received by the reception unit to the non-reception state until the next reception state. A determination step (for example, step S11 in FIG. 8);
An update setting step for updating and setting a speed check pattern for stopping the train at the target position indicated by the target position information received in the next reception state when it is determined to be updated by the determination step (for example, FIG. 8 step S15),
A speed check pattern update control method including the above may be configured.

  According to the first aspect, the on-board device receives the target position information sent from the ground device to the rail, and the speed check pattern for stopping the train at the target position indicated by the received target position information. Is set and speed check is performed according to the set speed check pattern. However, it is determined whether or not to update the speed verification pattern using a time interval from the reception state in which the target position information is received to the non-reception state to the next reception state. And when it determines with updating, it updates and sets to the speed check pattern for stopping a train to the target position which the target position information received by the next receiving state shows.

  Transmission of the target position information from the ground device to the rail is performed in units of track circuits. For this reason, in the on-board device, after passing the boundary of the track circuit, the target position information transmitted to the next track circuit is received after the target position information is not received. In the on-board apparatus, the same target position information is continuously received in the same track circuit, but there may be a “momentary interruption” in which the reception of the target position information is momentarily interrupted.

  Therefore, according to the first embodiment, from the time interval of the target position information, whether there is an “instantaneous interruption” in receiving the target position information, or the boundary of the track circuit passes through the boundary of the next target position information. It is possible to determine whether reception has started, and it is possible to determine whether or not to update the speed check pattern according to the determination result.

Moreover, as a 2nd form, it is a vehicle-mounted apparatus of a 1st form,
To the ground device, a first ground device (for example, a ground device for protection against erroneous passage of station in FIG. 2) that sends target position information with the stop position of erroneous passage protection inside the station stop position as the stop target position. 10-1) and a second ground device (for example, the ground device 10-2 for station stop in FIG. 2) that sends out target position information with the station stop position as the stop target position.
The determination means includes a stop target position of the current speed check pattern and a stop target position indicated by the target position information received in the next reception state, the station stop position and the erroneous passage protection stop position, respectively. It is further determined whether or not to perform the update,
An on-vehicle device may be configured.

  According to the second mode, the target position information sent from the ground device to the rail includes target position information with the station erroneous passage protection stop position inside the station stop position as the stop target position, and the station stop position. There is target position information with a stop target. In the on-board device, the determination as to whether or not to update the speed verification pattern is further performed by determining the target stop position indicated by the target stop position of the current speed check pattern and the target position information received in the next reception state. Each is performed using either a station stop position or a station erroneous passage stop position.

Moreover, as a 3rd form, it is a vehicle-mounted apparatus of a 2nd form,
In the case where the time interval satisfies a predetermined short time condition and the stop target position indicated by the target position information received in the next reception state is the station erroneous passage protection stop position. , Decide to update,
An on-vehicle device may be configured.

  According to the third embodiment, when the time interval satisfies a predetermined short-time condition and the next target stop position is a station erroneous passage protection stop position, it is determined to update the speed check pattern.

Moreover, as a 4th form, it is a vehicle-mounted apparatus of the 2nd or 3rd form,
The determination means is updated when the stop target position of the current speed check pattern is the same as the stop target position indicated by the target position information received in the next reception state, and the time interval satisfies a predetermined short-time condition. If it is not satisfied, it is determined not to be updated.
An on-vehicle device may be configured.

  According to the fourth embodiment, when the stop target position of the current speed check pattern is the same as the next stop target position, it is determined that the speed check pattern is updated when the time interval satisfies a predetermined short time condition, and is satisfied. If not, it is determined not to update.

The block diagram of a station erroneous passage protection system. Schematic diagram of station erroneous passage protection. Explanatory drawing of the setting of the speed check pattern at the time of a station stop. Explanatory drawing of the setting of the speed check pattern at the time of a station wrong passage. Explanatory drawing of reception of target position information. The internal block diagram of a vehicle-mounted apparatus. The data structural example of an update condition table. The flowchart of a speed check pattern setting process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the applicable embodiment of the present invention is not limited to this.

[overall structure]
FIG. 1 is a configuration diagram of a station erroneous passage protection system 1 in the present embodiment. As shown in FIG. 1, the station erroneous passage protection system 1 includes a plurality of ground devices 10 laid along a track and an onboard device 30 mounted on a train 20.

  The ground device 10 is connected to the boundary on the advancing side of the track circuit (closed section), and sends target position information F indicating the stop target position of the train to the track circuit (rail) as an electric signal. The stop target position of the train includes a station stop position determined for each station and a station erroneous passage stop position inward by a predetermined distance (for example, 50 m) from the station stop position. Then, the ground device 10 stops the station erroneous passage protection ground device 10-1 (first ground device) that sends target position information F1 with the station erroneous passage stop position as the stop target position, and the station stop position. There is a station stop ground device 10-2 (second ground device) that sends out target position information F2 as a target position (see FIG. 2).

  The on-board device 30 sets a speed check pattern for stopping at the stop target position indicated by the target position information F received from the track circuit (rail), and speed control (braking control) of the train 20 according to the speed check pattern. )I do.

[principle]
FIG. 2 is a schematic diagram of station erroneous passage protection by the station erroneous passage protection system 1. FIG. 2 shows the configuration of the track (the position of the station and the ground device 10) and the speed check pattern to be set, with the right direction being the traveling direction of the train. In the example illustrated in FIG. 2, a station stop ground device 10-2 and a station erroneous passage protection ground device 10-1 are installed in order from the station entrance side. The station stop ground device 10-2 sends out the target position information F2 indicating the station stop position as the stop target position, and the station erroneous passage protection ground device 10-1 is inward of the station stop position as the stop target position. The target position information F1 indicating the station erroneous passage stop position is transmitted.

  In this case, first, the train 30 approaching the station receives the target position information F2 sent from the station stopping ground device 10-2. Then, when the train 30 passes through the point P1 where the target position information F2 from the station stop ground device 10-2 is not received, the speed check pattern (which ends at the station stop position indicated by the target position information F2) Hereinafter, a speed check pattern whose end is a station stop position is appropriately set as a “station stop pattern”.

  When the train 30 crosses the point P1, the target position information F1 transmitted from the station erroneous passage protection ground device 10-1 is received. When the train 30 further travels and passes through a point P2 where the target position information F1 from the station erroneous passage protection ground device 10-1 is not received, the station erroneous passage stop position indicated by the target position information F1 is terminated. The speed check pattern (hereinafter, the speed check pattern whose end is a station erroneous passage stop position is appropriately referred to as a “station erroneous passage protection pattern”) is updated.

  The on-board device 30 performs speed control (braking control) according to the speed check pattern. When the speed check pattern is a station stop pattern, a service brake is used, and the station erroneous pass protection pattern is used. Use emergency brakes. That is, in the station stop pattern, when the travel speed exceeds the speed limit of the travel position determined by the speed check pattern, the service brake is applied to decelerate, and the speed is reduced from the speed limit determined by the speed check pattern to a certain speed or less. By the way, release the brake. On the other hand, in the station erroneous passage protection pattern, when the traveling speed exceeds the speed limit determined by the speed check pattern, an emergency brake is applied to stop the train.

  In this way, the on-board device 30 has a speed verification pattern that terminates at the stop target position indicated by the target position information F when the target position information F sent to the rail from the ground device 10 is no longer received. Set and update. This setting / update is the basis.

  However, in this embodiment, at the timing when the target position information F is no longer received, it is first determined whether or not to update the speed verification pattern. If it is determined to update, the speed verification based on the target position information F is performed. Set and update the pattern. Whether to update the speed check pattern is determined based on (condition 1) the target stop position indicated by the target position information F and (condition 2) the reception interval of the target position information F (see FIG. 7).

(Condition 1) Target stop position indicated by target position information F This (Condition 1) is a condition for realizing erroneous passage protection when the station stops.
FIG. 3 is a diagram for explaining a speed check pattern when the station stops. In FIG. 3, the case where the train stops at A station is shown. In the example illustrated in FIG. 3, a station erroneous passage protection ground device 10 </ b> A- 1 that transmits target position information F <b> 1 indicating a station erroneous passage stop position of the station A is installed on the approach side (outward) of the station A. . In addition, a station stop ground device 10B-2 for sending target position information F2 indicating the station stop position of the next B station is installed on the advance side (inward) of the A station.

  In this case, the train approaching the A station receives the target position information F1 transmitted from the station erroneous passage protection ground device 10A-1. Next, at the point P1 at which the target position information F1 transmitted from the station erroneous passage protection ground device 10A-1 is not received, the station A erroneous station stop position is terminated based on the target position information F1. Update to speed check pattern (station mis-passing protection pattern).

  When the point P1 is exceeded, the target position information F2 transmitted from the next station stopping ground device 10B-2 is received. When the train stops at station A, the speed check pattern (station erroneous passage protection pattern) is deleted. Thereafter, at the point P2 where the train departs from the station A and the target position information F2 from the station stop ground device 10B-2 is not received, the train stop position of the next B station based on the target position information F2. A speed check pattern (station stop pattern) is set.

  FIG. 4 is a diagram for explaining a speed check pattern at the time of erroneous passage of a station. FIG. 4 shows a case where the train erroneously passes through station A. In the example shown in FIG. 4, as in FIG. 3, the station erroneous passage protection ground device 10 </ b> A- that sends the target position information F <b> 1 indicating the station erroneous passage stop position of the station A to the approach side (outside) of the station A 1 is installed, and the station stop ground device 10B-2 for sending target position information F2 indicating the station stop position of the next B station is installed on the advance side (inward) of the A station.

  The train approaching the A station receives the target position information F1 transmitted from the station erroneous passage protection ground device 10A-1. Next, at the point P1 at which the target position information F1 from the station erroneous passage protection ground device 10A-1 is no longer received, based on the target position information F1, a speed check pattern that terminates at the station erroneous passage stop position at the station A. Update to (Station error passage protection pattern). When the point P1 is exceeded, the target position information F2 transmitted from the next station stopping ground device 10B-2 is received.

  When the train travels beyond the train stop target at station A and further exceeds the point P2 where the target position information F2 sent from the station stop ground device 10B-2 is not received (occurrence of erroneous passage). The speed check pattern (station mis-passing protection pattern) is not updated.

  In other words, in order to stop a train that has mistakenly passed through the station until the stop position for erroneous passage of the station, if the stop target position of the currently set speed check pattern is the stop position for erroneous pass of the station, in principle, the speed check pattern Do not update.

  The “in principle” is because there are the following exceptions. That is, when the stop target position of the currently set speed check pattern is a station erroneous passage stop position and the target position information F1 is received at a reception interval equal to or less than the time corresponding to the instantaneous interruption, Update the verification pattern. When the stop target position of the current speed check pattern is a station erroneous passage stop position and the target position information F1 is received next (when passing the point P2 in FIG. 2), the speed check pattern is updated.

(Condition 2) Reception Interval of Target Position Information F First, reception of target position information F in a train will be described. FIG. 5 is an explanatory diagram of the reception level of the target position information F in the train. FIG. 5 shows the configuration of the track (the position of the ground device 10) and the reception level of the target position information F, where the right direction is the traveling direction of the train.

  The ground device 10 is installed on the advance side of the track circuit, and therefore the target position information F flows from the advance side of the track circuit toward the approach side. For this reason, the reception level of the target position information F in the on-board device 30 is a low value when entering the track circuit, but gradually increases as it approaches the advancing side, and is almost zero when moving from the track circuit. Become. Then, when entering the next track circuit, similarly, the reception level of the target position information F gradually increases as it approaches the advance side.

  In the on-board device 30, a state where the reception level of the target position information F is equal to or higher than a predetermined determination level is a state where the target position information F is received (reception state). Further, the time interval from when the previous target position information F is no longer received until the next target position information F is received, that is, the time in the non-reception state, is the previous target position information F and the next target position information F. This is the “reception interval” with the position information F.

  By the way, during the running of the train, as shown in FIG. 5B, there may be a “momentary interruption” in which the reception level of the target position information F instantaneously decreases. During the period when the instantaneous interruption occurs, the target position information F is not received temporarily. The on-board device 30 sets and updates the speed check pattern based on the target position information F at the timing when the target position information F is no longer received. That is, when an instantaneous interruption occurs, the speed check pattern is set / updated at the timing that is not normally performed.

  The stop target position included in the target position information F is expressed by a distance (or kilometer) with reference to the boundary on the advancing side of the track circuit to which the target position information F is sent. For this reason, if the speed check pattern is updated at an incorrect timing due to a momentary interruption, a speed check pattern with the incorrect position as the stop target position is obtained. Therefore, the stop target position indicated by each of the previous target position information F and the next target position information F is the same, and the reception interval of the target position information F satisfies a predetermined short-time condition (for example, 500 ms or less). If so, it is determined that an instantaneous interruption has occurred. Then, the speed check pattern is updated based on the next target position information F at the timing when the next target position information F cannot be received.

[Function configuration]
FIG. 6 is an internal configuration diagram of the on-board device 30. According to FIG. 6, the on-board device 30 includes a processing unit 310 and a storage unit 320.

  The processing unit 310 is realized by an arithmetic device such as a computer, for example, and performs overall control of the on-board device 30 based on programs and data stored in the storage unit 320, received data via the power receiver 24, and the like. In the present embodiment, the processing unit 310 includes a position / speed calculation unit 311, a speed verification pattern setting unit 312, and a speed verification unit 313.

  The position / speed calculator 311 calculates the current travel position (travel distance or kilometer) and travel speed of the own train based on the measured value of the rotational speed of the speed generator attached to the axle. In the case of a system including a ground element installed along a trajectory, the ground element is identified from the ground element ID acquired by wireless communication with the ground element when passing near the ground element. The travel position may be corrected.

  The speed check pattern setting unit 312 performs a speed check pattern setting process (see FIG. 8) for setting a speed check pattern based on the target position information F received via the power receiver 24. Specifically, if the received target position information F is no longer received because the reception level of the target position information F is less than a predetermined level, the speed check based on the received target position information F is received. It is determined whether or not the pattern is updated. That is, if the speed verification pattern is not set, the speed verification pattern based on the current target position information F is set. On the other hand, if a speed check pattern is set, (condition 1) a combination of the stop target position of the current speed check pattern and the stop target position indicated by the next target position information F, and (condition 2) the previous time Based on the reception interval between the target position information F and the current target position information F, it is determined whether or not to update the speed check pattern according to the update condition table 324. If it is determined to be updated, the speed check pattern is updated / set based on the received current target position information F.

  FIG. 7 is a diagram illustrating a data configuration example of the update condition table 324. According to FIG. 7, the update condition table 324 is a data table that defines conditions for whether or not to update the speed check pattern. (Condition 1) The stop target position that is the end of the current speed check pattern, and Corresponding to the contents of determination whether to update each of the combination of the stop target position indicated by the target position information F received this time and the combination of (condition 2) the reception interval of the previous and current target position information F It is attached and stored.

  The speed check unit 313 performs speed check according to the speed check pattern set by the speed check pattern setting unit 312. That is, the speed limit for the current travel position determined by the speed check pattern is compared with the current travel speed. If the travel speed exceeds the speed limit, the brake mechanism 26 is operated to decelerate. In the present embodiment, there are two types of operation methods of the brake mechanism 26: a service brake and an emergency brake. The brake mechanism 26 is also operated by manual control by a train driver.

  The storage unit 320 is realized by a storage device such as a ROM or a RAM, and stores a system program and data for the processing unit 310 to control the on-board device 30 in an integrated manner, a program and data for realizing various functions, and the like. At the same time, it is used as a work area for the processing unit 310 and temporarily stores the calculation results executed by the processing unit 310, data received from the power receiver 24, and the like. In the present embodiment, the target position information 321 received via the power receiver 24, the reception interval data 322 of the target position information F, the set speed check pattern data 323 that has been set, the update condition table 324, the speed A verification pattern setting program 325 is stored.

[Process flow]
FIG. 8 is a flowchart for explaining the flow of the speed check pattern setting process. According to FIG. 8, the speed verification pattern setting unit 312 determines whether reception of the target position information F is started based on whether the reception level by the power receiver 24 is equal to or higher than the reception determination level. If it is determined that the reception of the target position information F is started when the reception level is equal to or higher than the reception determination level (step S1: YES), the current target position information F is not received from the previous time. A time interval up to the time when reception of the position information F is started is calculated (step S3).

  Next, it is determined that the target position information F is not received when the reception level by the power receiver 24 is less than the predetermined level (step S5: YES), and if there is no currently set speed check pattern (step S7). : NO), a speed check pattern based on the received target position information F at this time is set (step S9).

  On the other hand, if a speed check pattern is set (step S7: YES), it is determined whether or not to update the speed check pattern according to the update condition table 324 (step S11). As a result, if it is determined that the speed verification pattern is to be updated (step S13: YES), the speed verification pattern is set / updated based on the received current target position information F (step S15). On the other hand, if it is determined not to update the speed check pattern (step S13: NO), the current speed check pattern is continued (step S17).

  If it is determined in step S1 that reception of the target position information F is not started because the reception level by the power receiver 24 is less than the reception determination level (step S1: NO), the current speed is checked. In other words, it is determined whether or not the speed check pattern is set. If not (step S27: NO), the process returns to step S1.

  Subsequently, it is determined whether the traveling speed of the own train has stopped or not based on whether the traveling speed is equal to or less than the speed satisfying the stopping condition. If it is determined that the traveling is stopped (step S19: YES), the speed check pattern is determined from the stop position. The distance (approach distance) to the stop target position is calculated (step S21), and if the calculated approach distance is equal to or less than the predetermined distance (150m) (step S23: YES), the set speed check pattern is deleted (step S23). S25). Then, it returns to step S1 and repeats the same process.

[Action / Effect]
Thus, in the station erroneous passage protection system 1 of the present embodiment, the ground device 10 sends the target position information F indicating the stop target position to the track circuit, and the on-board device 30 receives the target position information received from the rail. A speed check pattern is set based on F. However, based on the combination of the stop target position of the set speed verification pattern and the stop target position indicated by the received target position information F, and the reception interval of the previous and current target position information F, It is determined whether or not to update the speed verification pattern. When it is determined to update, the speed verification pattern based on the currently received target position information F is updated at a timing when the currently received target position information F cannot be received. .

  Thereby, when the “momentary interruption” occurs in the reception of the target position information F, the speed check pattern can be updated. In addition, when the current speed check pattern is a speed check pattern (station erroneous pass protection pattern) with the station erroneous pass stop position as the stop target position, it is possible not to update until the train stops.

  It should be noted that embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Station erroneous passage protection system 10 Ground device 10-2 Station stop ground device 10-1 Station erroneous passage protection ground device 20 Train 30 On-board device 310 Processing unit 311 Position / speed calculation unit, 312 Speed check pattern setting unit 313 Speed verification unit 320 Storage unit 321 Reception target position information, 322 Reception interval data 323 Set speed verification pattern data, 324 Update condition table 325 Speed verification pattern setting program R Rail F (F1, F2) Target position information

Claims (5)

A ground device that sends target position information indicating a stop target position to a rail is an on-vehicle device mounted on a train that runs on the rail laid along the track,
Receiving means for receiving information sent to the rail;
Pattern setting means for setting a speed check pattern;
Speed checking means for performing speed checking according to the set speed checking pattern;
Receiving state detecting means for detecting that the target position information is being received by the receiving means;
A determination unit that determines whether or not to update the speed check pattern using a time interval until the next reception state is detected after detection is not performed by the reception state detection unit;
With
The pattern setting means, when it is determined to be updated by the determination means, is updated and set to a speed check pattern for stopping the train at the target position indicated by the target position information received in the next reception state,
On-vehicle equipment. The ground device includes a first ground device that transmits target position information with a stop position of erroneous passage protection inside the station stop position as the stop target position, and a target with the station stop position as the stop target position. There is a second ground device that sends location information,
The determination means includes a stop target position of the current speed check pattern and a stop target position indicated by the target position information received in the next reception state, the station stop position and the erroneous passage protection stop position, respectively. It is further determined whether or not to perform the update,
The on-vehicle device according to claim 1. In the case where the time interval satisfies a predetermined short time condition and the stop target position indicated by the target position information received in the next reception state is the station erroneous passage protection stop position. , Decide to update,
The on-vehicle device according to claim 2. The determination means is updated when the stop target position of the current speed check pattern is the same as the stop target position indicated by the target position information received in the next reception state, and the time interval satisfies a predetermined short-time condition. If it is not satisfied, it is determined not to be updated.
The on-vehicle device according to claim 2 or 3. A receiving device for receiving information sent to the rail, mounted on a train on which the ground device for sending the target position information indicating the stop target position to the rail runs on the rail laid along the track, A speed check pattern update control method performed by an on-board apparatus comprising pattern setting means for setting a speed check pattern and speed check means for performing speed check according to the set speed check pattern,
It is determined whether or not to update the speed check pattern using a time interval from the reception state where the target position information is received by the reception unit to the non-reception state until the next reception state. A determination step;
An update setting step for updating and setting a speed check pattern for stopping a train at a target position indicated by the target position information received in the next reception state when it is determined to be updated by the determination step;
Speed check pattern update control method.

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