JPH11119803A - Redundant system device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a redundant system formable at a low cost by preparing a common processor that has a prescribed processing function the same as those of plural processors, a means that switches a processor in which an abnormal processing state has been detected, to the common processor, etc. SOLUTION: The transmitters a1 to an have the filter circuits, modulation circuits, amplifier circuits, etc., in mutually the same constitution. The transmitter a1 of the first stage and the transmitter an of the final stage can transmit prescribed train control signals to the 1st and n-th track circuits respectively. A common transmitter a0 has the same constitution as those of transmitters a1 to an and has a function which can be substituted for that of any of transmitters a1 to an . Then, a switching part B can switch the transmitter a0 to one of transmitters a1 to an by the switching signal sent from a logical part A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a redundant system device incorporated in a device requiring high reliability, such as an automatic train control device (ATC) and a train position detecting device (TD).

[0002]

2. Description of the Related Art Conventionally, for example, like ATC and TD,
For equipment that requires high reliability and security, a standby dual system in which the main devices forming the equipment are configured in duplicate, or
It is configured as a multiplex system such as a parallel duplex system.

[0003] FIG. 3 shows a conventional transmission device configured as a standby dual system for transmitting a signal for controlling a train to a plurality of (n in this example) track circuits not shown.

In FIG. 3, A is a logic section for generating a predetermined train control signal to be transmitted to each track circuit. The signal from the ethics section A is composed of a first system and a second system. Transmitters a1, a1 'to an,
an '.

[0005] Each of the transmitters a1, a1 'to an, an'
It has the same configuration including a filter circuit, a modulation circuit, an amplification circuit, and the like (not shown). Of these, the first-stage transmitters a1 and a
1 'is connected to the first track circuit and to the final stage transmitter an
, An 'are configured to transmit predetermined train control signals to the n-th track circuit.

The transmitters a1, a1 'to an, an' at each stage
Are set by switches S1 to Sn... Composed of the contacts of a monitoring relay for self-diagnosis.
(Or a1 ') to an (or an') can transmit a predetermined train control signal to each track circuit. Normally, even if any of the main transmitters a1 to an in each stage fails, the subordinate normal transmitters a1 'to an'.
, And a train control signal can be transmitted through the control device, thereby improving the reliability of the entire train control device.

FIG. 4 shows a conventional receiving apparatus configured as a parallel duplex system for receiving train control signals from a plurality of (n in this example) track circuits not shown.

Each of the receivers b 1, b 1 ′ to b n, b n ′
It has the same configuration including a filter circuit, an amplification circuit, a demodulation circuit, and the like (not shown). Of these, the first-stage receivers b1, b
1 'is configured to receive a signal from the first track circuit, and the final stage receivers bn and bn' are configured to receive a signal from the nth track circuit. Then, each stage of the receiver b1
, B1 'to bn, bn' are configured to be fetched by a signal processor (not shown) to detect a train position or to analyze a train number (column number). ing.

The receivers b1, b1 'to bn, bn' at each stage
Are simultaneously processed, so that even if one of the receivers b1 (or b1 ') to bn (or bn') fails, the other normal receiver b1 '(or b1)
.About.bn '(or bn), so that the reliability and the like of the entire train control device can be improved.

[0010]

However, in the above-mentioned conventional redundant system comprising a standby dual system or a parallel dual system, since the equipment configuration of each stage is multiplexed,
There was a disadvantage that the equipment cost increased.

In particular, in recent years, the quality of parts such as circuit elements constituting equipment has been improved, and the quality of maintenance management has been improved. Until the whole system is updated to a new system, the other device on standby may not be used even once, and as a result, may exhibit an over-installation state.

In order to avoid such inconveniences, it is conceivable to abolish the redundant system of the equipment configuration and adopt a single-system equipment configuration. However, high reliability and high security such as ATC and TD are required. Such devices have the property that the redundant system cannot be abolished.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a redundant system device capable of forming a redundant system at low cost.

[0014]

In order to achieve the above object, a redundant apparatus according to the present invention includes a plurality of processing devices each having a predetermined processing function of the same type, and a processing state of the plurality of processing devices. Detection means for detecting each of the plurality of processing devices, one common processing device having a predetermined processing function of the same type as the plurality of processing devices, and switching means for switching the processing device in which the processing state abnormality is detected to the common processing device, , Consisting of

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram when a transmission device for transmitting a train control signal to a plurality of (n in this example) track circuits, not shown, is configured as a redundant system. The same components as those in FIG. 3 will be described with the same reference numerals.

In FIG. 1, A is a logic section mainly composed of a CPU for generating a predetermined train control signal for each track circuit. The signal from the ethics section A is 1
Single transmitters a1, a2,...
It is configured to be input to each of n.

Each of the transmitters a1, a2,... An is configured identically, not shown, including a filter circuit, a modulation circuit, an amplification circuit and the like. Among them, the first-stage transmitter a1 is connected to a first track circuit. Further, the transmitter an at the last stage is configured to be capable of transmitting a predetermined train control signal to the n-th track circuit.

In FIG. 1, a0 denotes each of the transmitters a1, a2.
.. An, and has a function that can be substituted for any of the transmitters a1, a2,. Reference numeral B denotes a switching unit, which is configured to switch the common transmitter a0 to any of the transmitters a1, a2,... An by a switching signal from the logic unit A.

Each of the transmitters a1, a2,... An is provided with a well-known self-diagnosis function for monitoring an output state from the transmitter. The switches S1, S2,..., Sn, and the common transmitter a
0 is configured to replace the failed transmitter. FIG. 1 shows a state in which the switch S of the transmitter a1 has fallen and the common transmitter a0 has been switched to the transmitter a1.

In the transmission device having the above configuration, each transmitter a
If each of the transmitters a1, a2,..., A2,.
Since the switches S1, S2 ... Sn of an are lifted,
A predetermined train control signal is transmitted from each transmitter a1, a2,... An to each track circuit.

Now, if a failure occurs in the transmitter a1 and the switch S1 falls, the failure signal is also input to the logic unit A, although not shown in FIG.
The switching unit B switches to connect the common transmitter a0 to the first track circuit, and also switches the common transmitter a0 to the transmitter a1.
Is selected so as to generate and output a signal for the first track circuit similar to the above.

Therefore, even if the transmitter a1 fails, it is supplemented by the common transmitter a0, so that it is possible to avoid a situation in which the entire transmission device goes down and hinders train operation. Also, if any of the transmitters a2... An fails, it is complemented by the common transmitter a0 as in the case of the above-mentioned transmitter a1.

FIG. 2 is a schematic configuration diagram when a receiving device for receiving train control signals from a plurality of (n in this example) track circuits not shown is configured as a redundant system. The same components as those in FIG. 4 will be described with the same reference numerals.

Each of the receivers b1, b2,..., Bn has the same configuration including a filter circuit, an amplification circuit, a demodulation circuit and the like (not shown). And the last-stage receiver bn is configured to be able to input signals from the n-th track circuit. The signals received by the receivers b1, b2,... Bn at each stage are taken into a signal processor (not shown) to detect a train position or to analyze a train number (column number). It is configured as follows.

In FIG. 2, b0 represents each of the receivers b1, b2.
.. Bn, and has a function that can be substituted for any of the receivers b1, b2,. The processing unit C has a function of detecting whether or not the receiving function of each of the receivers b1, b2,... Bn is normally performed. It is configured so that it can be switched to the receiver b0.
FIG. 2 shows a state where the common receiver b0 is switched to the receiver b1.

In the receiving apparatus having the above configuration, each of the receivers b
If each of the receivers b1, b2,.
bn inputs and processes a predetermined signal from each track circuit,
It is configured so that it can be output to a signal processor (not shown).

Now, if a failure occurs in the receiver b1 now, the failure is detected by the processing unit C, and the switching unit D is switched so that the common receiver b0 is switched to the failed receiver b1. Is driven.

Therefore, even if the receiver b1 fails, it is supplemented by the common receiver b0, so that it is possible to avoid a situation in which the entire receiving device goes down and hinders train operation. If any one of the receivers b2... Bn fails, it is complemented by the common receiver b0 as in the case of the above-mentioned receiver b1.

In the above-described example, the transmission / reception device for train control is shown as a processing device. However, it goes without saying that a processing device having another processing function may be used.

[0030]

The redundant apparatus according to the present invention comprises a plurality of processing devices independently having a predetermined processing function of the same kind, a detecting means for detecting the processing state of each of the plurality of processing devices,
Since one common processing device having a predetermined processing function of the same type as the plurality of processing devices and a switching unit for switching the processing device in which a processing state abnormality is detected to the common processing device, the number of devices is small. A redundant system can be configured, and equipment costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram when a redundant device according to an embodiment is applied to a transmission device for train control.

FIG. 2 is a schematic configuration diagram when the redundant device according to one embodiment is applied to a train control receiving device.

FIG. 3 is a schematic configuration diagram when a conventional standby dual system is applied to a transmission device for train control.

FIG. 4 is a schematic configuration diagram when a conventional parallel dual system device is applied to a train control receiving device.

[Explanation of symbols]

 a1 to an transmitter (processing equipment) a0 common transmitter (common processing equipment) b1 to bn receiver (processing equipment) b0 common receiver (common processing equipment) A logic unit B, D switching unit C processing unit

Continued on the front page (72) Inventor Yasuo Sawada 1-13-8 Kamikizaki, Urawa-shi, Saitama Japan Traffic Signal Co., Ltd. Yono Office (72) Inventor Jun Sugawara 1-13-8 Kamikizaki, Urawa-shi, Saitama Japan Inside the Signal Corporation Yono Office

Claims (1)

[Claims] 1. A plurality of processing devices independently having a predetermined processing function of the same type, a detection unit for detecting a processing state of each of the plurality of processing devices, and a predetermined processing function of the same type as the plurality of processing devices. 1. A redundant system device comprising: a common processing device having the same; and switching means for switching the processing device in which a processing state abnormality is detected to the common processing device.