JP2010279187A - Lightning-surge protection system for dc-input/output controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely provide protection against a lightening surge using a simple configuration, and to surely prevent erroneous control of a DC input/output controller. <P>SOLUTION: Lightning-surge protection elements 5a, 5b, and 5c comprising nonlinear resistive elements are connected between control lines 3a and 3b for connecting distant inputs IRa and IRb to a plurality of DC input electronic circuits 2a and 2b of a DC input controller 1a and the output of a distant input/output DC power supply 4, whose polarity is different from that of each control lines 3a and 3b. Even if a conduction failure occurs with the lightening surge protection element 5a, safe operation of a train is prevented from being impaired by controlling the DC input controller 1a to be the safe side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lightning surge protection system of a DC input / output control device such as an electronic interlocking system for a railway.

  In the field of railways, in order to operate trains safely and efficiently, an electronic interlocking system is disclosed in which a certain order and restrictions are imposed on the handling of traffic lights and switchboards.

  In this electronic interlocking system, conventionally, DC input / output control is performed using a large-sized railway signal electromagnetic relay. Since this railway signal electromagnetic relay generally has a large lightning surge resistance, it does not require a lightning surge protection function.

  In recent years, there has been a trend toward computerization in the control of the railway signal field, and control using an electronic circuit is performed instead of an electromagnetic relay for railway signals. Since this electronic circuit has a small lightning surge resistance, it is necessary to provide a lightning surge protection system as shown in Patent Document 1.

  As shown in the circuit configuration diagram of FIG. 5, a conventional lightning surge protection system applied to a DC input control device 1a having two DC input electronic circuits 2a and 2b of one-line control corresponding to remote inputs IRa and IRb. The control line 3a between the far input IRa and the DC input electronic circuit 2a, the control line 3b between the far input IRb and the DC input electronic circuit 2b, and one output to the DC input electronic circuits 2a and 2b, For example, zinc oxide (ZnO) is connected to the control line 3c between the remote input / output DC power supply 4 and the remote inputs IRa and IRb, respectively, which are connected to the positive side and connected to the other inputs IRa and IRb, for example, to the other side. Lightning surge protection means 7a to 7c in which a lightning surge protection element 5 made of a non-linear resistance element made of an element and a lightning surge protection pipe 6 made of a discharge tube are connected in series are connected and grounded. There is common.

  Further, as shown in the circuit configuration diagram of FIG. 6, the far input IRa1 connected to the plus side of the far input / output DC power supply device 4 and the far input IRa2 connected to the minus side of the far input / output DC power supply device 4. 2 circuits of the far-field input IRa, the far-field input IRb1 connected to the plus side of the far-field input / output DC power supply 4 and the far-field input IRb2 connected to the minus side of the far-input / output DC power supply 4 The conventional lightning surge protection system applied to the DC input control device 1b having the two DC input electronic circuits 2a and 2b of two-line control corresponding to the far input IRb includes the far input IRa1 and the DC input electronic circuit 2a. A control line 3a1 between the remote input IRa2 and the DC input electronic circuit 2a, a control line 3b1 between the remote input IRb1 and the DC input electronic circuit 2b, and a remote input A lightning surge protection element 5 made of a non-linear resistance element made of, for example, a zinc oxide (ZnO) element and a lightning surge protection pipe 6 made of a discharge tube are connected in series to a control line 3b2 between Rb2 and the DC input electronic circuit 2b. The connected lightning surge protection means 7a to 7d are connected and grounded, and the control line 3c1 for connecting the remote input / output DC power supply 4 and the remote inputs IRa1 and IRb1, and the remote input / output DC power supply 4 A lightning surge protection means 7e, 7f in which a lightning surge protection element 5 and a lightning surge protection tube 6 comprising a discharge tube are connected in series between a control line 3c2 connecting the remote input IRa2 and IRb2 and the ground. Connected.

  Further, as shown in the circuit configuration diagram of FIG. 7, the conventional lightning surge applied to the DC output control device 10a having the two-line DC output electronic circuits 11a and 11b corresponding to the remote outputs ORa and ORb. The protection system includes a control line 3a between the remote output ORa and the DC output electronic circuit 11a, a control line 3b between the remote output ORb and the DC output electronic circuit 11b, and a positive side to the DC output electronic circuits 11a and 11b. A non-linear resistance element made of, for example, a zinc oxide (ZnO) element is connected to the control line 3c between the remote input / output DC power supply 4 connected to the remote outputs ORa and ORb and the remote output ORa and ORb. The lightning surge protection means 7a-7c which connected the lightning surge protection element 5 and the lightning surge protection tube 6 which consists of a discharge tube in series are connected and grounded.

  Further, as shown in the circuit configuration diagram of FIG. 8, the conventional lightning surge protection system applied to the DC output control device 10b having the DC output electronic circuits 11a and 11b of the two-line control two circuits has both-line control output. The control line 3a1 between the plus side of the far output ORa and the DC output electronic circuit 11a, the control line 3a2 between the minus side of the far output ORa and the DC output electronic circuit 11a, and the far output ORb of both line control outputs The control line 3b1 between the positive side of the DC output electronic circuit 11b and the control line 3b2 between the negative side of the far-field output ORb and the DC output electronic circuit 11b are each composed of, for example, a non-linear element composed of a zinc oxide (ZnO) element. Lightning surge protection means 7a-7d in which a lightning surge protection element 5 made of a resistance element and a lightning surge protection pipe 6 made of a discharge tube are connected in series are connected and grounded.

  As shown in FIG. 5, in a conventional lightning surge protection system applied to a DC input control device 1a having two DC input electronic circuits 2a and 2b of one-side control corresponding to the remote inputs IRa and IRb, the remote input IRa Is ON, the DC input electronic circuit 2a is input, and the remote input IRb is OFF. If the lightning surge protection means 7a, 7b fails in conduction, the control line 3a and the control line 3b are connected to the lightning surge protection means 7a, 7b. As a result, the DC input electronic circuit 2b is in a state with an input. Although it is considered that the lightning surge protection means 7a and 7b are unlikely to cause a conduction failure at the same time, a continuity failure occurs in the other lightning surge protection means 7b after one lightning surge protection means 7a has passed after the conduction failure. The occurrence of multiple continuity faults due to this cannot be ignored.

  Further, as shown in FIG. 6, in the conventional lightning surge protection system applied to the DC input control device 1b having the DC input electronic circuits 2a and 2b controlled by both lines, the remote input IRa is ON and the DC input electronic circuit 2a is When there is an input and the remote input IRb is off, the control line 3a1 and the control line 3b1 come into contact with each other, and if the lightning surge protection means 7b, 7d fails in conduction, the control line 3a2 and the control line 3b2 become the lightning surge protection means 7b. , 7d, the DC input electronic circuit 2b is in a state with an input. Similarly, when the remote input IRa is ON and the DC input electronic circuit 2a is input and the remote input IRb is OFF, the control line 3a2 and the control line 3b2 are mixed, and the lightning surge protection means 7a and 7c become conductive. If a failure occurs, the control line 3a1 and the control line 3b1 are short-circuited by the lightning surge protection means 7a and 7c, and the DC input electronic circuit 2b becomes in a state with input.

  Further, as shown in FIG. 7, in the conventional lightning surge protection system applied to the DC output control device 10 having the two-line DC output electronic circuits 11a and 11b corresponding to the remote outputs ORa and ORb. If the lightning surge protection means 7a, 7b fails when the DC output electronic circuit 11a has an output, the remote output ORa is ON, the DC output electronic circuit 11b has no output, and the remote output ORb is OFF, the control line 3a and the control line 3b may be short-circuited by the lightning surge protection means 7a and 7b, and the remote output ORb may be turned on by the DC output electronic circuit 11a.

  Further, as shown in FIG. 8, in the conventional lightning surge protection system applied to the DC input / output control device 10b having the DC output electronic circuits 11a and 11b controlled by both lines, the DC output electronic circuit 11a has an output and a remote output. When the ORa is on, the DC output electronic circuit 11b is not output, and the far-field output ORb is off, the control line 3a1 and the control line 3b1 come into contact with each other, and if the lightning surge protection means 7b, 7d fails in conduction, the control line 3a2 The control line 3b2 may be short-circuited by the lightning surge protection means 7b and 7d, and the remote output ORb may be turned on by the DC output electronic circuit 11a. Similarly, when the DC output electronic circuit 11a has an output and the far output ORa is on, the DC output electronic circuit 11b has no output and the far output ORb is off, the control line 3a2 and the control line 3b2 are mixed, If the lightning surge protection means 7a, 7c fails in conduction, the control line 3a1 and the control line 3b1 may be short-circuited by the lightning surge protection means 7a, 7c, and the remote output ORb may be turned on by the DC output electronic circuit 11a.

  In general, the lightning surge protection means 7 is large and expensive, and connecting the lightning surge protection means 7 to all the control lines has a problem of requiring a large installation space as well as economy.

  The present invention eliminates such problems and reliably protects against lightning surges with a simple configuration and also reliably prevents erroneous control of the DC input / output controller. Is intended to provide.

  The lightning surge protection system of the DC input / output control device according to the present invention connects one output of a remote input / output DC power supply to a common input line of a remote input such as an electronic interlocking system of a railway, In a lightning surge protection system of a DC input / output control device having a plurality of DC input electronic circuits that are connected to the other output and control a remote input by a one-line control system, each DC input electronic circuit of the DC input / output control device has A lightning surge protection element comprising a non-linear resistance element connected between the connected input control line and the other output of the remote input / output DC power source connected to the DC input / output control device; and the common control line; A lightning surge protection element composed of a non-linear resistance element connected between the other output of the remote input / output DC power source and a non-linear resistance element connected between the common control line and the ground And having a lightning surge protection means for a lightning surge protection tube made of a surge protection device discharge tube connected in series.

  The lightning surge protection system of the second DC input / output control device according to the present invention connects one output of a DC power supply for remote input / output to a common control line for remote output such as an electronic interlocking system for railways, In a lightning surge protection system of a DC input / output control device having a plurality of DC output electronic circuits that are connected to the other output of the DC power supply and control a remote output by a one-line control method, each DC output of the DC input / output control device A lightning surge protection element comprising a non-linear resistance element connected between an output control line to which an electronic circuit is connected and one output of a remote input / output DC power supply connected to the DC input / output control device; and the common A lightning surge protection means connected between a control line and ground, and comprising a lightning surge protection element made of a non-linear resistance element and a lightning surge protection pipe made of a discharge tube connected in series.

  The lightning surge protection system of the third DC input / output control device according to the present invention has a plurality of DCs that are connected to the positive output and the negative output of the remote input / output DC power source and control the remote input or the remote output by the two-line control method. In a lightning surge protection system of a DC input / output control device having an input electronic circuit or a plurality of DC output electronic circuits, the remote input or the remote output is connected to the DC input electronic circuit or the DC output electronic circuit of the DC input / output control device A lightning surge protection element comprising a non-linear resistance element connected between a control line and the output of the remote input / output DC power supply having a different polarity, and a positive output and a negative output of the remote input / output DC power supply A lightning surge protection element composed of a non-linear resistance element connected between the output and the output of any one of the remote input / output DC power supplies and the ground, and non-linear And having a lightning surge protection means for a lightning surge protection tube made of a lightning surge protection element made of anti-device discharge tube connected in series.

  In the present invention, a lightning surge protection element composed of a non-linear resistance element is connected to a plurality of DC input electronic circuits or DC output electronic circuits of a DC input / output control device, a control line connecting a remote input or a remote output, and the control line has a polarity. By connecting between different remote input / output DC power supplies, even if a lightning surge protection element has a continuity failure, the DC input / output control device is controlled to the safe side and the safe operation of the train is impaired. Can be prevented.

  In addition, by minimizing the number of lightning surge protection means, it is possible to reduce the price of the lightning surge protection function.

It is a block diagram which shows the structure of the lightning surge protection system of the direct current input control apparatus which has the direct current input electronic circuit of single line control. It is a block diagram which shows the structure of the lightning surge protection system of the direct current input control apparatus which has the direct current input electronic circuit of both-line control. It is a block diagram which shows the structure of the lightning surge protection system of the direct current | flow output control apparatus which has the direct current | flow output electronic circuit of single line | wire control. It is a block diagram which shows the structure of the lightning surge protection system of the DC output control apparatus which has a DC output electronic circuit of both-line control. It is a block diagram which shows the structure of the conventional lightning surge protection system of the direct current input control apparatus which has the direct current input electronic circuit of single line control. It is a block diagram which shows the structure of the conventional lightning surge protection system of the DC input control apparatus which has a DC input electronic circuit of both-line control. It is a block diagram which shows the structure of the conventional lightning surge protection system of the DC output control apparatus which has a DC output electronic circuit of single line control. It is a block diagram which shows the structure of the conventional lightning surge protection system of the DC output control apparatus which has a DC output electronic circuit of both-line control.

Hereinafter, the lightning surge protection system of the present invention will be described in detail with reference to FIGS.
FIG. 1 is a block diagram showing a configuration of a lightning surge protection system of a DC input control device according to the present invention. As shown in the figure, a lightning surge protection system applied to a DC input control device 1a such as a railway electronic interlocking system having two DC input electronic circuits 2a and 2b of one-line control corresponding to remote inputs IRa and IRb. Is a non-linear resistance such as a zinc oxide (ZnO) element connected to one side of the control line 3a between the remote input IRa and the DC input electronic circuit 2a and one output of the remote input / output DC power supply 4 such as a positive side. A lightning surge protection element 5a composed of elements, a control line 3b between the remote input IRb and the DC input electronic circuit 2b, a lightning surge protection element 5b connected to the positive side of the DC power supply 4 for remote input / output, The lightning surge protection element 5c connected to the positive side and the negative side of the DC power supply device 4 for input / output, the remote inputs IRa and IRb, and the negative output of the DC power supply device 4 for remote input / output It is connected between ground and control line 3c which continue to have a lightning surge protection means 7 for a lightning surge protection tube 6d consisting of a lightning surge protection element 5d discharge tube connected in series. The DC input electronic circuits 2a and 2b are composed of photocouplers, for example.

  The ZnO elements constituting the lightning surge protection elements 5a to 5d have a low applied voltage and a high resistance in a region before the non-linear phenomenon occurs, and an insulation resistance when the applied voltage decreases after a lightning surge flows. However, it becomes the original high resistance and the insulation can be restored to prevent the continuity. Further, the discharge tube constituting the lightning surge protection tube 6 of the lightning surge protection means 7 causes an arc discharge at a high potential such as a lightning surge to flow current, and once the discharge occurs, it remains energized unless the current is cut off. become.

  In this lightning surge protection system, when the remote input IRa is ON and the DC input electronic circuit 2a is input, and the remote input IRb is OFF, the input of the DC input electronic circuit 2a Since it is short-circuited, the DC input electronic circuit 2a is controlled to a state without input. Similarly, when the lightning surge protection element 5b fails in conduction, the input of the DC input electronic circuit 2b is short-circuited, so that the DC input electronic circuit 2b is controlled to have no input. Further, if the lightning surge protection element 5c fails in conduction, the output of the remote input / output DC power supply device 4 is short-circuited, so that the DC input electronic circuit 2a is in a state of no input. In a railway electronic interlocking system or the like, it is safe to control the state without input, and the DC input control device 1a can be controlled to the safe side even if any of the lightning surge protection elements 5a to 5c fails in conduction. it can.

  Further, by installing the lightning surge protection elements 5a to 5c in the DC input control device 1a, it is sufficient to connect only the lightning surge protection means 7 to the outside of the DC input control device 1a when installing the DC input control device 1a. Construction can be performed easily.

  In addition, as shown in FIG. 2, the lightning surge protection system applied to the DC input control device 1b such as the railway electronic interlocking system having the DC input electronic circuits 2a and 2b for both-line control has two circuits of the remote input IRa. Non-linearity such as a zinc oxide (ZnO) element connected to the control line 3a1 between one remote input IRa1 and the DC input electronic circuit 2a and one output of the DC power supply 4 for remote input / output, for example, the negative side. A lightning surge protection element 5a1 made of a resistance element, a control line 3a2 between the remote input IRa2 and the DC input electronic circuit 2a, and the other output of the remote input / output DC power supply device 4, for example, the positive side The control line 3b1 between the protective element 5a2 and one of the far inputs IRb1 of the two far inputs IRb and the DC input electronic circuit 2b and the minor of the DC power supply device 4 for the remote input / output. Lightning surge protection element 5b1 connected to the side, control line 3b2 between the remote input IRb2 and the DC input electronic circuit 2b and the lightning surge protection element connected to the positive side of the remote input / output DC power supply 4 5b2, control for connecting the lightning surge protection element 5c connected to the plus and minus sides of the remote input / output DC power supply device 4, the remote inputs IRa1 and IRb1 and the plus side of the remote input / output DC power supply device 4 The lightning surge protection means 7 is connected between the line 3c2 and the ground and has a lightning surge protection element 5d and a lightning surge protection tube 6d made of a discharge tube connected in series.

  In this lightning surge protection system, when the remote input IRa is ON and the DC input electronic circuit 2a is input and the remote input IRb is OFF, the control line 3a1 and the control line 3b1 are in contact with each other, or the control line 3a2 When the control line 3b2 is in contact, no matter how the lightning surge protection elements 5a1, 5a2, 5b1, and 5b2 are in conduction failure, the DC input electronic circuit 2b is in an input-free state and controlled to the safe side.

  Further, as shown in FIG. 3, the lightning surge protection system applied to the DC output control device 10a having the DC output electronic circuits 11a and 11b having two single-line control circuits corresponding to the remote outputs ORa and ORb is a remote output. It comprises a non-linear resistance element such as a zinc oxide (ZnO) element connected to the control line 3a between the ORa and the DC output electronic circuit 11a and one output of the remote input / output DC power supply 4 such as the negative side. The lightning surge protection element 5a, the lightning surge protection element 5b connected to the control line 3b between the remote output ORb and the DC output electronic circuit 11b, and the negative side of the DC power supply 4 for remote input / output, and the remote output ORa , ORb and a control line 3c connecting the negative output of the remote input / output DC power supply 4 and the ground, and a lightning surge comprising a lightning surge protection element 5d and a discharge tube. And a lightning surge protection means 7 which connects the Mamorukan 6d in series.

  In this lightning surge protection system, when the DC output electronic circuit 11a has an output and the remote output ORa is ON, the DC output electronic circuit 11b has no output and the remote output ORb is OFF, the lightning surge protection elements 5a and 5b Regardless of the continuity failure, the DC output electronic circuit 11b is in a no-output state and controlled to the safe side.

  Furthermore, as shown in FIG. 4, the lightning surge protection system applied to the DC output control device 10b with the two-line controlled two-circuit DC output electronic circuits 11a and 11b is one of the two circuits of the remote output ORa. It comprises a non-linear resistance element such as a zinc oxide (ZnO) element connected to the control line 3a1 between the ORa1 and the DC output electronic circuit 11a and one output of the remote input / output DC power supply 4 such as the negative side. Control line 3a2 between the lightning surge protection element 5a1, the other remote output ORa2 of the two remote outputs ORa and the DC output electronic circuit 11a and the other output of the remote input / output DC power supply 4 such as the plus side The control line 3b1 and the remote input / output between the connected lightning surge protection element 5a2 and the remote output ORb1 of one of the two remote outputs ORb and the DC output electronic circuit 11b The lightning surge protection element 5b1 connected to the negative side of the DC power supply device 4, the control line 3b2 between the remote output ORb2 of the remote output ORb of the two circuits and the DC output electronic circuit 11b and the DC for remote input / output Lightning surge protection element 5b2 connected to the positive side of power supply device 4, lightning surge protection element 5c connected to the positive side and negative side of remote input / output DC power supply device 4, and DC power supply device for remote input / output 4 and a lightning surge protection means 7 connected between the output on the plus side of 4 and the ground, in which a lightning surge protection element 5d and a lightning surge protection tube 6d made of a discharge tube are connected in series.

  In this lightning surge protection system, when the DC output electronic circuit 11a has an output and the remote output ORa is ON, the DC output electronic circuit 11b has no output and the remote output ORb is OFF, the control line 3a1 and the control line 3b1 If the control line 3a2 and the control line 3b2 are in the mixed contact state, the DC output electronic circuit 11b has no output no matter how the lightning surge protection elements 5a1, 5a2, 5b1, 5b2, and 5c fail in conduction. It becomes a state and is controlled to the safe side.

IRa, IRb; remote input, ORa, ORb; remote output, 1; DC input control device,
2; DC input electronic circuit, 3; control line, 4; DC power supply for remote input / output,
5; Lightning surge protection element, 6; Lightning surge protection tube, 7; Lightning surge protection means,
10; DC output control device; 11; DC output electronic circuit.

JP 2003-165440 A

Claims (3)

Connect one output of the DC power supply for remote input / output to the common control line of the remote input such as an electronic interlocking system for railways, and connect the other output of the DC power supply for remote input / output to the remote input using the single-wire control method. In a lightning surge protection system of a DC input / output control device having a plurality of DC input electronic circuits to be controlled,
Nonlinear resistance element connected between the input control line connected to each DC input electronic circuit of the DC input / output control device and the other output of the DC power supply for remote input / output connected to the DC input / output control device A lightning surge protection element comprising:
A lightning surge protection element comprising a non-linear resistance element connected between the common control line and the other output of the remote input / output DC power source;
A direct current characterized by comprising a lightning surge protection means connected between the common control line and ground, wherein a lightning surge protection element comprising a non-linear resistance element and a lightning surge protection pipe comprising a discharge tube are connected in series. Lightning surge protection system for I / O controller. Connect one output of the DC power supply for remote input / output to the remote control common control line such as an electronic interlocking system for railways, and connect the other output of the DC power supply for remote input / output to the remote output using the single-line control system. In a lightning surge protection system of a DC input / output control device having a plurality of DC output electronic circuits to be controlled,
A non-linear resistance element connected between an output control line to which each DC output electronic circuit of the DC input / output control device is connected and one output of a remote input / output DC power source connected to the DC input / output control device. A lightning surge protection element comprising:
A direct current characterized by comprising a lightning surge protection means connected between the common control line and the ground, in which a lightning surge protection element comprising a non-linear resistance element and a lightning surge protection pipe comprising a discharge tube are connected in series. Lightning surge protection system for I / O controller. A DC input / output control device having a plurality of DC input electronic circuits or a plurality of DC output electronic circuits for controlling a remote input or a remote output by a two-wire control system by connecting a positive output and a negative output of a DC power supply for remote input / output In lightning surge protection system,
Between the DC input electronic circuit or DC output electronic circuit of the DC input / output control device, the remote input or remote output is connected to the control line and the output of the remote input / output DC power supply having a polarity different from that of the control line. A lightning surge protection element comprising a connected non-linear resistance element;
A lightning surge protection element comprising a non-linear resistance element connected between the positive output and the negative output of the remote input / output DC power source;
A lightning surge protection means connected between any output of the remote input / output DC power source and the ground, and a lightning surge protection element comprising a non-linear resistance element and a lightning surge protection pipe comprising a discharge tube connected in series; A lightning surge protection system for a DC input / output control device.

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