JP2726775B2 - ATC controller - 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 control device mounted on a train as a train security device.

[0002]

2. Description of the Related Art FIG. 2 is a circuit diagram of a conventional ATC control device shown in a partial block diagram. In the drawing, reference numeral 1 denotes a speed generator (hereinafter referred to as TG) which generates a voltage and a frequency corresponding to the speed of a train, and a first and second windings having phase angles shifted from each other by 90 °, for example, an A winding. It has a B winding, and when the train advances, the output of the A winding for speed check is the B
The phase is advanced with respect to the output of the winding. Reference numeral 2 denotes an ATC control device which is connected to the TG 1 and includes the following elements and controls the operation of the train. 3 is connected to the A winding of TG1, and outputs a predetermined excitation output when the train is stopped, and outputs an output according to the above-described voltage and frequency of TG1 when the train is running. A first circuit that does not output the above-described excitation output when the line is disconnected, for example, an oscillation type waveform shaping circuit, 4 is connected to the B winding of TG1 and outputs an output corresponding to the above-described voltage and frequency of TG1 when the train is running. For example, a direct connection type waveform shaping circuit 5 is connected to the output side of the oscillation type waveform shaping circuit 3, and a stop detection circuit for detecting the stop of the train.
A speed checking circuit which is connected to the output side of the oscillation type waveform shaping circuit 3 and receives the output and an ATC signal from the outside and checks the running speed of the train. And a disconnection detection circuit for detecting a disconnection because the excitation output of the oscillation type waveform shaping circuit 3 disappears when a disconnection occurs in the A winding of the TG 1. 4. Further, a retreat which is connected to the output side of the stop detection circuit 5 and detects the retreat of the train from the phase difference between the A winding and the B winding of the TG 1 via the oscillation type waveform shaping circuit 3 and the direct connection type waveform shaping circuit 4. A detection circuit 9 is connected to the output side of the speed check circuit 6 and the disconnection detection circuit 7, and an OR circuit which takes a logical sum of these outputs and outputs a service brake command, and 10 is an output side of the reverse detection circuit 8. Connected and retreat And trains retraction detection signal from the latch circuit 8 is input and no signal condition from the outside, an OR circuit for outputting an emergency brake command taking the logical OR. In addition, the B winding of TG1 is also used for driving the speedometer of the cab. Reference numeral 11 denotes a speed checking unit including the above-described stop detecting circuit 5, speed checking circuit 6, and disconnection detecting circuit 7.

Next, the operation will be described. TG1 generates a voltage and a frequency according to the speed of the train. At this time, T
The output of the A winding of G1 is used for speed checking, and the output of the B winding is detected by detecting a phase difference from the output of the A winding.
Used to perform reverse detection. That is, for the speed check, the output of the A winding is input to the speed check circuit 6 via the oscillation type waveform shaping circuit 3. Note that the oscillation type waveform shaping circuit 3 gives an excitation output when the train is in a stopped state, but does not output any excitation output when the A winding of the TG 1 is disconnected instead of stopping the train. A distinction is made between stopping the train and disconnection of the A winding of TG1. This is because the output becomes 0 when the A winding of the TG 1 has a disconnection failure, but in this case, if the train is running, it is in a very dangerous state, and this is to prevent this. . Disconnection detection circuit 7
Detects such a disconnection and outputs a service brake command through the OR circuit 9.

[0004]

Since the conventional ATC control device is configured as described above, when a disconnection failure occurs in the A winding of the TG1, the disconnection is detected, and a service brake command is output. Therefore, there is a problem that the ATC control device 2 must be opened. In addition, there is also a problem that the speedometer does not swing if the B winding breaks.

The present invention has been made to solve such a problem. Even if one of the windings of a TG having a plurality of windings is broken, the operation of the train is switched by switching to the remaining windings. An object is to obtain an ATC control device that can be continued.

[0006]

An ATC control device according to the present invention comprises a high-priority circuit for outputting an output corresponding to a higher frequency of the first and second circuits, and the high-priority circuit outputs the output. Operates in response to no longer being issued,
Means for switching the input to the circuit from the first winding of the speed generator to the second winding, and a switch for connecting a speedometer to the first winding when the second winding is disconnected. Is provided.

[0007]

According to the present invention, even if there is a disconnection failure of one of the TG windings, the system does not go down and the normal operation of the train can be continued without the necessity of making the apparatus into a multiplex system configuration.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial block diagram of an embodiment of the ATC control apparatus according to the present invention. In FIG. 1, reference numerals 1, 3 to 11 are the same as those of the conventional example, and a description thereof will be omitted. Reference numeral 2A denotes an ATC control device according to the present invention, and TGCR denotes a disconnection detection relay that energizes a coil (no symbol) when the disconnection detection circuit 7 for the A winding operates, and includes normally open contacts a1, a2, and a3.
And a normally closed contact b1. The normally closed contact b1
Is inserted between the A winding of TG1 and the oscillation type waveform shaping circuit 3 via a TG winding changeover switch, which will be described later, and the normally open contact a3 interlocking with the normally closed contact b1 is connected to the B winding of TG1 and the oscillation type. It is inserted between the waveform shaping circuits 3. 12 is TG
1 is a TG winding change-over switch inserted between the ATC control device 2A and the oscillation type waveform shaping circuit 3 in the ATC control device 2A to switch the connection between the A winding and the B winding to the ATC control device side.
A transformer inserted between the B winding of the TG 1 and the direct-coupled waveform shaping circuit 4,
Reference numeral 14 is arranged between the oscillation type waveform shaping circuit 3 and the direct connection type waveform shaping circuit 4 and the speed checking unit 11, and A of the TG 1
A high-priority circuit that outputs the output of the winding and the B-winding after shaping the waveforms by the oscillation waveform shaping circuit 3 and the direct connection type waveform shaping circuit 4, that is, outputs the higher frequency to the speed checking unit 11. is there.

Next, the operation when the winding of TG1 is broken will be described. (1) If the A winding breaks,
In the illustrated state in which the G winding changeover switch 12 is connected to the oscillation type waveform shaping circuit 3, if the A winding is disconnected while the train is running, the output from the oscillation type waveform shaping circuit 3 is lost (the frequency is OHz). ), The output on the B winding side is input to the high priority circuit 14 via the transformer 13 and the direct connection type waveform shaping circuit 4, whereby the output frequency on the B winding side as the high order side is input to the speed checking unit 11. You. Accordingly, the disconnection detecting circuit 7 is not operated, the TGCR relay is also kept demagnetized, the normally open contacts a1, a2, a3 are kept open and the normally closed contacts b1 are kept closed, and the running of the train is normally maintained. You.

Next, when the train stops in the above-mentioned state, the output on the B winding side disappears (the frequency is OHz),
The output frequency of the high-order priority circuit 14 also becomes OHz, the disconnection detection circuit 7 operates, and the TGCR relay is excited.
By closing the normally open contact a1, a "disconnection indication" output is output to the crew member, and the TGCR relay is held by the closed normally open contact a2.

On the other hand, when the TGCR relay is excited, the normally closed contact b1 opens and the normally open contact a3 closes, so that the input to the oscillation type waveform shaping circuit 3 is changed from the A winding side of the TG1 to the B winding side. Switching is performed, the B winding output is supplied through the path indicated by the dashed-dotted arrow A in FIG. 1, and the operation is the same as in the normal state of the device, and the train continues to operate as it is. However, in this state , since only one winding can be used, it is impossible to detect the backward movement of the train, and this is recognized by outputting "disconnection display" to the crew.

(2) When the B winding is disconnected If the B winding is disconnected in the state shown in the figure, the ATC control device cannot detect backward movement, but its operation is not affected. However, because the speedometer will not swing,
Upon seeing this, the crew notices the abnormality of TG1 and operates the TG winding changeover switch 12 to switch to the A winding side, so that the output of the A winding is supplied through the path indicated by the two-dot chain line arrow B. Thus, the speedometer is operated through the transformer 13 by the output of the A winding.

As an ATC control device, TGCR
Since the relay is demagnetized and its normally open contact a3 is open, the output of the A winding is not supplied to the oscillation type waveform shaping circuit 3, and the output is lost (the frequency becomes OHz).
However, when the train is running, the output of the A-winding direct-connection waveform shaping circuit 4 is input from the high-order priority circuit 14 to the speed check unit 11, so that the disconnection is not detected and the TGCR
The relay is also kept demagnetized, and the train runs normally.

Further, the operation when the train stops is performed in exactly the same way as the operation when the A winding is disconnected.

[0015]

As described above, the present invention provides the first and second embodiments.
A high-priority circuit that outputs an output corresponding to the higher frequency of the circuit, and operates in response to the high-priority circuit no longer producing an output, and supplies an input to the first circuit to a speed generator. Means for switching from the first winding to the second winding of
A switch for connecting a speedometer to the first winding when the second winding is disconnected, so that one of the TG windings can be disconnected without using a multiplexed system. Even if there is a failure, the system will not be shut down and the train can be operated normally, and the speedometer can be swung even if the B winding is disconnected.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram illustrating a conventional ATC control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 TG 2A ATC controller 3 Oscillation type waveform shaping circuit 4 Direct connection type waveform shaping circuit 7 Disconnection detection circuit TGCR Disconnection detection relay 12 TG winding changeover switch 14 High priority circuit

Claims (1)

(57) [Claims] 1. A train is connected to a first winding of a speed generator for generating a voltage and a frequency corresponding to a speed of a train, and outputs a predetermined excitation output when the train is stopped. And a first circuit which does not output the excitation output when the first winding is disconnected, and which is different from the first winding of the speed generator. A second circuit that is connected to a second winding having a phase angle and outputs an output according to the voltage and frequency when the train is running; and a higher one of the first and second circuits. A high-priority circuit that outputs an output corresponding to the frequency of the second high-priority circuit, and operates in response to the high-priority circuit no longer outputting an output, and inputs an input to the first circuit from the first winding to the second Means for switching to the second winding, and when the second winding is disconnected, the speedometer is switched to the first winding. An ATC control device comprising a changeover switch connected to a winding.