JP3410658B2 - ATC on-board equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ATC onboard device, and more particularly to a brake control technique when a train speed exceeds a check speed.

[0002]

2. Description of the Related Art An ATC device transmits permissible operating speed (checking speed) information from the ground to an onboard vehicle for each closed section in accordance with the distance from a preceding train and the state of route opening, and at the onboard device, Train speed check is continuously performed, and deceleration control is automatically performed so that the train speed becomes equal to or lower than the check speed.

[0003]

By the way, the conventional AT
As shown in FIG. 3, the brake control in the on-board device C is performed when the train enters the front block section and the check speed Vs is reached.
When the train speed V (shown by the solid line in the figure) changes and the train speed V (shown by the dotted line in the drawing) exceeds the checking speed, the brake is immediately operated to control the deceleration of the train.

However, the blockage control is 1 for each blockage section.
Trains are in principle, and if the train speed is reduced below the check speed before the next closed section, sufficient safety can be secured. Therefore, in the conventional control in which the brake is immediately applied when the train speed exceeds the check speed, the train operation density becomes low. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ATC onboard device that can further improve train operation density while ensuring safety.

[0005]

Therefore, in the ATC on-board device according to the first aspect of the invention, A transmitted from the ground is transmitted.
Receiving means for receiving TC signal, speed detecting means for detecting train speed, detected speed of the speed detecting means and the ATC
When the train speed exceeds the checking speed based on the comparison result of the speed comparing means for comparing the checking speed defined by the signal, the braking means, and the speed comparing means, the braking operation start time is set according to the speed difference. And a brake control means for driving and controlling the brake means when the set time has elapsed.

In such a structure, the speed comparison means compares the actual train speed detected by the speed detection means with the verification speed defined by the ATC signal received by the reception means. If the comparison result shows that the actual train speed exceeds the check speed, the brake control means sets the brake operation start time according to the speed difference, and when the set time elapses, the brake means is operated to operate the train. Will slow down.

Further, when the acceleration detection signal from the acceleration detection means for detecting the acceleration of the train is input before the elapse of the set time, the brake control means immediately performs the braking control means. It is preferable that the braking means be driven and controlled. In such a configuration, even if the actual train speed exceeds the checking speed and the time for starting the braking operation is set, if the acceleration detecting means detects the acceleration operation of the train in the middle, the brake is immediately operated. Become.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration diagram of an embodiment of an ATC on-board device according to the present invention. In FIG. 1, an ATC on-board device of the present embodiment is provided with a pair of right and left trains facing each rail, and an on-board antenna 1 serving as a receiving means for receiving an ATC signal from the train ground, and a train. Tacho generator 2 as speed detecting means for detecting speed
And a reception control unit 3 that performs speed checking based on speed signals respectively input from the on-vehicle antenna 1 and the tachogenerator 2 to drive and control a braking device 4 as a braking means.

The reception control unit 3 inputs signals from the on-board antenna 1 and the tacho generator 2, compares the verification speed Vs defined by the ATC signal with the actual train speed V, and executes speed verification. Speed check unit 3 as speed comparison means
A and the brake control unit 3B that generates a brake control output based on the comparison result of the speed check unit 3A, and the speed difference Δv (= V−V) when the train speed V exceeds the check speed Vs.
The memory 3C in which the data regarding the braking operation start time set according to s) is stored in advance, and the acceleration detection unit 3D as the acceleration detection means for detecting the acceleration of the train based on the speed detection signal from the tacho generator 2. It is equipped with.

Next, the operation of the ATC onboard device of this embodiment will be described. The AT corresponding to the allowable speed specified for each closed section according to the distance from the preceding train and the route opening situation
C signal is transmitted to the rail, and the on-board antenna 1 uses this AT
Receive C signal. The received ATC signal is input to the speed check unit 3A in the reception control unit 3, and the check speed Vs defined by the ATC signal is compared with the actual train speed V input from the tacho generator 2. As shown in FIG. 2, when the comparison result of the train speed V (indicated by a dotted line in the figure) and the check speed Vs (indicated in the figure) is Vs ≧ V, the brake device 4 is set as shown in FIG. Maintain the relieving (non-operating) state as it is.

On the other hand, for example, when the train enters the front closed section and the allowable speed of the approach closed section is smaller than the allowable speed of the advanced closed section, the train speed V exceeds the check speed Vs (Vs <V). In this case, the brake control unit 3B
Calculates the speed difference Δv (= V−Vs), reads the time data for starting the brake operation corresponding to the calculation result from the memory 3C, and at the same time, starts time measurement by a built-in timer, for example. When the elapsed time (timer value) from the time when Vs <V coincides with the read time data, a brake operation output is generated to drive and control the brake device 4, and the train speed V becomes equal to or lower than the check speed Vs. The train is decelerated until it becomes. Train speed V is verification speed Vs
If it falls to below, the brake device 4 is released (non-operation)
Return to the state and stop the deceleration control.

Further, when the train is accelerated and the acceleration detecting unit 3D detects this during the period until the train enters the closed section and the braking operation is started, the detection signal from the acceleration detecting unit 3D The brake control unit 3B generates a brake operation output according to the input. As a result, the braking device 4 operates immediately to decelerate the train. The time data is set as follows, for example.

It is set based on the shortest closed section distance in the line section where the train runs. The point where the train speed becomes equal to or lower than the check speed after starting the braking operation is set before the next closed section, and the braking operation start point in the case of the shortest closed section is set. Then, in the shortest block section, the brake operation start time is set based on the distance from the block section entry end to the brake operation start point.

As described above, in this embodiment, when the train speed V exceeds the checking speed Vs, the braking operation is not started immediately as in the conventional control shown in FIG. 3, but as shown in FIG. Since the braking operation is started after a predetermined time has elapsed according to the speed difference Δv between the train speed V and the check speed Vs, the train speed is not excessively suppressed,
Train operation efficiency can be improved. Moreover, the setting of the brake operation start time is always designed so that the train can be sufficiently decelerated to a safe speed before the next closed section, and
When the train accelerates before the braking operation starts, the deceleration control of the train is immediately executed, so that the safety can be improved.

[0015]

As described above, according to the present invention as set forth in claim 1, when the train speed exceeds the checking speed, the braking operation is not started immediately when the train speed exceeds the checking speed.
Since the start of the braking operation is delayed by the time corresponding to the speed difference, the train speed can be improved without excessively suppressing the train speed while ensuring safety.

According to the invention of claim 2, claim 1
In addition to the effect of the invention described above, when the train accelerates before starting the braking operation, the train can be immediately decelerated and controlled, so that the safety can be further improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of an ATC onboard device according to the present invention.

FIG. 2 is an explanatory diagram of a brake control operation of the above embodiment.

FIG. 3 is an explanatory diagram of a brake control operation of a conventional device.

[Explanation of symbols]

1 Onboard antenna 2 tacho generator 3 Reception control device 3A Speed check section 3B brake control unit 3C memory 3D acceleration detector 4 Brake device

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Claims (2)

(57) [Claims] 1. A receiving means for receiving an ATC signal transmitted from the ground, a speed detecting means for detecting a train speed, and a detection speed of the speed detecting means and a checking speed defined by the ATC signal. Speed comparison means, braking means,
Brake control means for setting a brake operation start time according to the speed difference when the train speed exceeds the check speed based on the comparison result of the speed comparison means, and drivingly controlling the brake means when the set time has elapsed, An ATC on-board device comprising: 2. The brake control means is configured to immediately drive-control the brake means when an acceleration detection signal from the acceleration detection means for detecting the acceleration of the train is input before the elapse of the set time. 1. The ATC on-board device according to 1.