JPH04368402A - Atc controller - Google Patents

Abstract

PURPOSE:To continue the operation of train by making a switching to remaining winding when winding B is disconnected from winding A of a speed generator. CONSTITUTION:When a priority circuit 14 responsive to higher one of the output frequency from an oscillation shaper circuit 3 or a direct-coupled shaper circuit 4 stop provision of output, a disconnection detecting circuit 7 functions to excite a TGCR relay (disconnection detecting relay for winding A of a speed generator TG) which thereby switches the contacts thereof to connect the winding B to the oscillation shaper circuit 3.

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 safety device.

0002

2. Description of the Related Art FIG. 2 is a partial block diagram of a conventional ATC control device. In the figure, 1 is a speed generator (hereinafter referred to as TG) that generates a voltage and frequency according to the speed of the train, and the first and second windings, for example, the A winding, whose phase angles are shifted by 90 degrees from each other. It has a B winding, and when the train is moving forward, the output of the A winding for speed checking is the B winding for backward detection.
It is designed to have a leading phase with respect to the output of the winding. Reference numeral 2 is an ATC control device connected to this TG1, consisting of the following elements, and controlling train operation. 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-mentioned voltage and frequency of TG1 when the train is running. A first circuit that does not output the above-mentioned excitation output when the wire is disconnected, such as an oscillation waveform shaping circuit, 4 is connected to the B winding of TG1, and outputs an output according to the above-mentioned voltage and frequency of TG1 when the train is running. A second circuit, for example, a direct-coupled waveform shaping circuit, 5 is connected to the output side of the oscillation waveform shaping circuit 3, and
A stop detection circuit 6 for detecting a stop of a train is similarly connected to the output side of the oscillation waveform shaping circuit 3, and its output and an external ATC signal are inputted to a speed check circuit for checking the running speed of the train. A circuit 7 is also connected to the output side of the oscillation waveform shaping circuit 3, and is a disconnection detection circuit that detects a disconnection because the excitation output of the oscillation waveform shaping circuit 3 disappears when a disconnection occurs in the A winding of TG1. , 8 is the oscillation waveform shaping circuit 3
is connected to the output side of the direct-coupled waveform shaping circuit 4 and the stop detection circuit 5, and is connected to the output side of the stop detection circuit 5. 9 is an OR circuit that is connected to the output sides of the speed check circuit 6 and disconnection detection circuit 7 and outputs a service brake command by calculating the logical sum of their outputs, and 10 is a reverse detection circuit that detects backward movement of the vehicle. Connected to the output side of the circuit 8, a train backward detection signal from the backward detection circuit 8;
This is an OR circuit that receives an external no-signal condition, calculates the logical sum of these, and outputs an emergency brake command. Incidentally, the B winding of TG1 is also used for driving the speedometer of the driver's cab. Further, reference numeral 11 denotes a speed check section which is composed of the above-mentioned stop detection circuit 5, speed check circuit 6, and disconnection detection circuit 7.

Next, the operation will be explained. TG1 generates a voltage and 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 the phase difference with the output of the A winding.
Used to perform backward detection. That is, for speed checking, the output of the A winding is input to the speed checking circuit 6 via the oscillation waveform shaping circuit 3. Note that the oscillation waveform shaping circuit 3 provides an excitation output when the train is stopped, but when the A winding of TG1 is disconnected instead of the train stopping, it does not output any excitation output. Distinguish between a train stop and a break in the A winding of TG1. This is to prevent the output from becoming 0 when the A winding of TG1 breaks, but even in that case, if the train is still running, it will be in a very dangerous situation. . Disconnection detection circuit 7
detects such a disconnection and outputs a service brake command through the OR circuit 9.

0004

[Problems to be Solved by the Invention] Since the conventional ATC control device is configured as described above, when a disconnection failure occurs in the A winding of TG1, the disconnection is detected and a service brake command is output. There was a problem in that the ATC control device 2 had to be opened. There was also the problem that the speedometer would not move if the B winding broke.

[0005] This invention was made to solve such problems, and even if one of the windings of a TG, which has a plurality of windings, breaks, the train can continue operating by switching to the remaining windings. The objective is to obtain an ATC control device that can be used continuously.

[0006]

[Means for Solving the Problems] The ATC control device according to the present invention includes a high-order priority circuit that outputs an output according to the higher frequency of the first and second circuits, and a high-order priority circuit that outputs an output according to the higher frequency of the first and second circuits. It operates in response to the fact that the first
a switch for connecting the speedometer to the first winding when the second winding is disconnected; It has been established.

[0007]

[Operation] According to the present invention, even if one TG winding has a disconnection failure, the system does not go down, and normal train operation can be continued without the need for a multi-system configuration of the device.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, which partially shows a block diagram of an embodiment of an ATC control device according to the present invention, numerals 1, 3 to 11 are the same as those in the conventional example, and their explanations will be omitted here. 2A is an ATC control device of the present invention, and TGCR is a disconnection detection relay whose coil (no code) is energized when the disconnection detection circuit 7 for winding A is activated, and normally open contacts a1, a2, a3.
and a normally closed contact b1. In addition, normally closed contact b1
is inserted between the A winding of TG1 and the oscillation type waveform shaping circuit 3 via the TG winding changeover switch described later, and the normally open contact a3 that interlocks with the normally closed contact b1 is inserted between the B winding of TG1 and the oscillation type waveform shaping circuit 3. It is inserted between the waveform shaping circuits 3. 12 is TG
1 and the oscillation waveform shaping circuit 3 in the ATC control device 2A, the TG winding changeover switch is inserted to switch the connection of the A winding and B winding to the ATC control device side; 13 is a TG winding changeover switch;
and the direct-coupled waveform shaping circuit 4, and a transformer inserted between the B winding of the TG1 and the direct-coupled waveform shaping circuit 4;
14 is arranged between the oscillation type waveform shaping circuit 3, the direct-coupled waveform shaping circuit 4, and the speed checking unit 11,
This is a high-order priority circuit that outputs the higher frequency, that is, the higher frequency, after waveform shaping the outputs of the winding and the B winding by the oscillation waveform shaping circuit 3 and the direct-coupled waveform shaping circuit 4, respectively, to the speed checking section 11. be.

Next, the operation when the winding of TG1 is disconnected will be explained. (1) If winding A is disconnected,
In the illustrated state where the TG winding selector switch 12 is connected to the oscillation waveform shaping circuit 3, if the A winding is disconnected while the train is running, the output from the oscillation waveform shaping circuit 3 will disappear (if the frequency is OHZ). ), the output of the B winding side is inputted to the high-order priority circuit 14 via the transformer 13 and the direct-coupled waveform shaping circuit 4, and as a result, the output frequency of the B winding side as the high-order side is inputted to the speed checking section 11. Ru. Therefore, the disconnection detection circuit 7 is not activated, the TGCR relay remains demagnetized, the normally open contacts a1, a2, and a3 remain open, and the normally closed contact b1 remains closed, and the train continues to run normally. Ru.

[0010] Next, when the train stops in the above-mentioned state, the output on the B winding side also disappears (frequency is OHz),
The output frequency of the high priority circuit 14 also becomes OHz, the disconnection detection circuit 7 operates, and the TGCR relay is energized.
By closing the normally open contact a1, the crew member can
At the same time, the TGCR relay is self-held by the closed normally open contact a2.

On the other hand, when the TGCR relay is energized, the normally closed contact b1 opens and the normally open contact a3 closes, so the input to the oscillation waveform shaping circuit 3 is transferred from the A winding side of TG1 to the B winding side. The B winding output is supplied through the path shown by the dashed-dotted arrow A in FIG. 1, and the device is in the same state as in its normal state, and the train continues to operate. However, in this state, only one winding can be used, so it is impossible to detect the train going backwards, and this is recognized by outputting a "disconnection display" to the crew.

(2) When the B winding is disconnected If the B winding is disconnected in the illustrated state, the ATC control device will be unable to detect backward movement, but its operation will not be affected. However, as the speedometer stopped swinging, the crew noticed that there was an abnormality in TG1 and operated the TG winding changeover switch 12 to switch to the B winding side.
The output of the winding is supplied through the path indicated by the two-dot chain arrow RO, whereby the speedometer is operated by the A winding output through the transformer 13.

[0013] Also, as an ATC control device, TGCR
Since the relay is demagnetized and its normally open contact a3 is open, the A winding output is not given to the oscillation waveform shaping circuit 3, and its output is eliminated (the frequency becomes OHz). However, when the train is running, the output from the direct-coupled waveform shaping circuit 4 side of the A winding is input from the high priority circuit 14 to the speed checking section 11, so no disconnection is detected and the TGCR
The relay also remains demagnetized and the train continues to run normally.

Furthermore, the operation when the train stops is exactly the same as the operation when the A winding is disconnected.

[0015]

[Effects of the Invention] As described above, this invention provides the first and second
a high-order priority circuit that outputs an output according to the higher frequency of the circuits; and a high-order priority circuit that operates in response to the fact that this high-order priority circuit no longer outputs output, and converts the input to the first circuit into a speed generator. means for switching from the first winding to the second winding of the
Since the second winding is equipped with a switch that connects the speedometer to the first winding when the second winding is disconnected, it is possible to prevent the disconnection of one winding of the TG winding without configuring the device in a multiple system configuration. Even if there is a failure, the system does not go down and the train can be operated normally, and even if the B winding is disconnected, the speedometer can still be operated.

[Brief explanation of drawings]

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

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

[Explanation of symbols]

1 TG 2A ATC control device 3 Oscillation waveform shaping circuit 4 Direct-coupled waveform shaping circuit 7 Disconnection detection circuit TGCR Disconnection detection relay 12 TG winding selection switch 14 High priority circuit

Claims (1)

[Claims] 1. A speed generator that is connected to a first winding of a speed generator that generates a voltage and frequency according to the speed of the train, outputs a predetermined excitation output when the train is stopped, and outputs a predetermined excitation output when the train is running. output according to the voltage and frequency when
A first circuit that does not output the excitation output when the first winding is disconnected; and a second winding of the speed generator having a phase angle different from that of the first winding; A second device that outputs an output according to the voltage and frequency when the train is running.
a high-order priority circuit that outputs an output according to the higher frequency of the first and second circuits; means for switching the input to the first circuit from the first winding to the second winding; and a changeover switch for connecting the speedometer to the first winding when the second winding is disconnected. An ATC control device comprising: