JP6008658B2 - Single-line automatic closing device normal monitoring device - Google Patents

Description

The present invention relates to a single-line automatic blocking device normal monitoring device for monitoring an automatic blocking device used in a single-line section between stops in a railway, and more particularly, to the state of a driving direction line of a driving direction relay circuit of a single-line automatic blocking device. The present invention relates to a single line automatic closing device normal monitoring device to be monitored.
Stop stations are located at both ends of a single track section, and in terms of train operation, it means a place where an up train and a down train are misplaced, and places where they can be exchanged and turned back. A station is a typical example. This also applies to signal fields and driving yards.

  With respect to the driving direction relay circuit of the single-line automatic closing device 30 in the conventional single-line section (see Non-Patent Document 1), portions useful for explaining the present invention will be described with reference to the drawings. FIG. 3 is a block diagram of the driving direction relay circuit 30 with a schematic diagram of a single-line section. FIG. 1A is a schematic diagram of a line related to a single line section (10) in which a single-line automatic blocking device 30 is installed, and FIG. 1B is a schematic diagram of operating direction levers 21 and 22 of the single-line automatic blocking device 30. .

  The single wire section line 10 on which the automatic closing type (automatic A) automatic closing device is installed (see FIG. 3 and FIG. 1A) is a single line laid in a section extending from several kilometers to several tens of kilometers. There is an upstream stop 11 at one end of the starting point, a downward stop 12 at the other end of the end, and a traffic signal 13 is installed between both stops 11 and 12. As for the block signal 13, the thing used for control of an up train and the thing used for control of a down train are installed. In addition, a pair of driving direction levers 21 and 22 that are manually operated for exclusive control are also provided, and one of the driving direction levers 21 is a signal equipment room, station affairs room, driving handling of the upstream stop 11. The other driving direction lever 22 is placed in the down stop 12 and both of the driving direction levers 21 and 22 are tilted to the left L. If the driving direction levers 21 and 22 are both tilted to the right side R, the downward direction is set (see FIG. 1B).

  The driving direction relay circuit of the single-line automatic closing device 30 adapted to such a single-line section line 10 (see FIG. 3) is an ascending partial circuit 31 installed in the signal equipment room of the stop 11 and the signal equipment of the stop 12 The downstream partial circuit 32 installed in the room, and the intermediate partial circuit 33 installed in the intermediate signal device box of the block traffic signal 13 attached to the single-track section line 10 between the two stops 11 and 12, both ends. The three parts are connected to the relay drive current supply part (operating direction line transformer rectifier) of the upstream partial circuit 31 and the other end is connected to the relay drive current supply part (operating direction line transformer rectifier) of the downstream part circuit 32. Electric wires 36, 37, and 38 are provided. The three electric wires 36, 37, and 38 are all configured to have, for example, DC 48V (in the illustrated example, two relays that are driven by DC 24V are connected in series. If there are n intermediate traffic lights, n × 24V), the relay drive current supplied from the positive side B to the negative side C can be made to flow with low resistance. After being insulated, they are combined into a single cable along the single line section line 10. The upstream partial circuit 31 reaches the downstream partial circuit 32 via the intermediate partial circuit 33. These electric wires 36, 37, and 38 are referred to as an operation direction line and an insulator line when the three wires are handled without being distinguished, and the electric wire pairs 36 and 37 are called FKR lines, and the electric wire pairs 38 and 37 Is called an FR line.

  Although the detailed description of each of the upstream partial circuit 31 and the downstream partial circuit 32 is omitted (refer to Non-Patent Document 1 for details), each of the upstream partial circuit 31 and the downstream partial circuit 32 is composed of a circuit mainly composed of a surge resistant relay. Then, when setting the up direction in which the progress to the single track section 10 is limited to the up train heading from the stop 12 to the stop 11, the up partial circuit 31 becomes the power transmission side and the relay drive current is supplied via the wires 36, 37, and 38. The descending partial circuit 32 is placed on the power receiving side to short-circuit the wires 36, 37, and 38, but provides assistance but does not supply the relay drive current. In addition, when setting the down direction in which travel to the single track section line 10 is limited to a down train heading from the stop 11 to the stop 12, the down partial circuit 32 becomes the power transmission side and relay drive current is supplied via the electric wires 36, 37, 38. The upstream partial circuit 31 is placed on the power receiving side and short-circuits the wires 36, 37, 38 to provide assistance but not to supply relay drive current.

  Although the detailed description of the intermediate partial circuit 33 is omitted (see Non-Patent Document 1 for details), the intermediate partial circuit 33 is composed of several relay contacts inserted and connected to the electric wire 36 and is used to show the traffic lights at both stops 11 and 12. Accordingly, a part for limiting the supply of relay drive current to an appropriate time, a part for maintaining the continuity of the electric wire 37, an upward operation direction relay UFR and a downward operation direction relay DFR inserted and connected to the electric wire 38, and an electric wire 38 includes a first rectifier and a second rectifier connected in parallel to each other.

  Then, when the driving direction levers 21 and 22 are handled at both the stops 11 and 12 and both are moved to the left side L and the driving direction is set to the up direction, the up partial circuit 31 is connected to the intermediate partial circuit 33 via the electric wires 36, 37 and 38. The relay drive current is supplied, and the electric wires 36, 37, 38 are turned on by the drop of the contact of the relay 1RFR in the downstream partial circuit 32 (note that the electric wires 37, 38 are short-circuited but the electric wires 36, 37 are on). Is not short-circuited because the relay 1UFKR is interposed), in the intermediate partial circuit 33, the first rectification unit is in the energization blocking state / cutoff state, whereas the second rectification unit is in the energization allowable state / conduction state, Along with this, the up direction relay UFR operates while the down direction relay DFR falls, so that the traffic signal for the up train of the traffic signal 13 is a single track. Although a state capable of performing current-to allow trains traveling in line 10, the traffic towards the downstream train of clogging traffic 13 is stopped in unconditionally current-.

  On the other hand, when the driving direction levers 21 and 22 are handled at both the stops 11 and 12 and both are tilted to the right R and the driving direction is set to the downward direction, the downward partial circuit 32 is connected to the intermediate partial circuit via the electric wires 36, 37 and 38. 33 is supplied with a relay drive current, and the electric wires 36, 37, 38 are conducted by dropping of the contact of the relay 8LFR in the upstream partial circuit 31 (in this case, the electric wires 37, 38 are short-circuited, but the electric wires 36, 37 is not short-circuited because the relay 8DFKR is interposed), in the intermediate partial circuit 33, the second rectification unit is in the energization blocking state / interruption state, whereas the first rectification unit is in the energization permitted state / conduction state As the driving direction relay DFR operates while the driving direction relay UFR falls, the signal for the down train of the traffic signal 13 is closed. Is a state that allows the current-to allow trains traveling in single track line 10, traffic toward the up train of clogging traffic 13 is stopped in unconditionally current-. Thus, the train traveling to the single track section 10 is exclusively controlled by the automatic closing device (automatic A) automatic closing device provided with the driving direction levers 21 and 22 and the driving direction relay circuit 30. It is limited to only one selected.

  Such a single-wire automatic closing device 30 is a facility in which it is extremely difficult to determine the soundness of the entire device, which is a serious problem in terms of maintenance. In addition, failures that require several days for recovery have occurred in the past, and this has a great impact on railway users. This is also coupled with the difficulty of maintenance for railway operators. It has become a lot of problems. In particular, in the single wire automatic closing device 30, the operation direction lines 36 to 38 for transmitting the control signals, that is, the lines formed by the electric wires 36, 37, and 38, are exposed to a severe field and often cause troubles. Further, since the blocking unit installed at the intermediate blocking signal device 13 has the intermediate partial circuit 33 housed in the signal device box, the intermediate partial circuit 33 is also more resistant to weathering and noise than the single-wire automatic blocking apparatus main body. It is a weak facility in terms of lightning resistance, etc. and is prone to failure.

And in order to identify a failure point at the time of the failure of such a single-line automatic blocking device, the failure point detection apparatus of a single-line automatic closure device was developed (for example, refer to patent documents 1). It has been put to practical use as a driving direction relay circuit).
Specifically, when a failure occurs in the driving direction line, by giving a command to the failure point detection device of the single-line automatic closing device from the station or command, etc. Detects the relay operation state of the track circuit in the middle track circuit and the voltage at the power transmission / reception end of the operation direction line, and further classifies it based on the logical operation of each relay operation state and the suitability of the line voltage, etc. It has come to identify.

Japanese Patent Laid-Open No. 48-2614 (Japanese Patent Publication No. 51-40325)

Introduction to Electricity for Railway Engineers Signal Series 2 “Blocking Device” Japan Railway Electrical Engineering Association Revised April 30, 2004 33-53 Fig. 4-2 Driving direction relay circuit

However, the above-described failure detection device of the single-wire automatic closing device is a device for identifying a failure location after a failure occurs in the single-wire automatic blocking device, and a device intended for maintenance to prevent the occurrence of the failure in advance. It wasn't. Therefore, it is useful after a problem has occurred in the driving direction circuit and the situation is a catastrophic situation of a single-line automatic blocker, but it is useful to predict the occurrence of an abnormality or It was not possible to contribute to removal.
On the other hand, in order to alleviate or eliminate the undesired effects due to the failure of the single-line automatic blocker, even if an abnormality that seems to cause the failure is detected before the failure occurs, an alarm etc. is issued. It is desirable to prevent preventive maintenance.

In addition, in order to accurately and efficiently detect such an abnormality, it is necessary to constantly monitor the driving direction line in which the most unstable elements are the largest in the constituent parts of the single-line automatic blocker and in which most of the obstacles actually occur. Is preferred.
For this reason, before a catastrophic situation of a single-line automatic blocking device occurs due to a problem in the driving direction line, if it is an abnormality related to the driving direction line, even a minor abnormality should not be missed as much as possible It is requested to detect.
Therefore, it is a technical problem to realize a single line automatic closing device normal monitoring device that can detect even a slight abnormality in the driving direction line.

  The single-line automatic blocking device normal state monitoring device of the present invention (Solution 1) was devised to solve such a problem, the driving direction acquisition unit for acquiring the driving direction of the single-line automatic blocking device, An operation direction line state quantity detection circuit for detecting a voltage and a current related to an operation direction line of the single line automatic closing device, and an abnormality that is a sign of a failure of the single line automatic closing device due to a change in resistance value with respect to the operation direction line over time. A determination unit that determines presence / absence based on the operation direction, the voltage, and the current;

  Further, the single line automatic closing device normal monitoring device of the present invention is (Solution means 2), the single line automatic closing device normal state monitoring device of the above solving means 1, wherein the operation direction line state quantity detection circuit is connected to the operation direction line. The ground resistance is also detected, and the determination unit determines whether or not there is an abnormality based on the operation direction, the voltage, the current, and the ground resistance. .

  Furthermore, the single-line automatic blocking device normal monitoring device of the present invention is (Solution means 3), the single-line automatic blocking device normal monitoring device of the above-described solving means 1 and 2, when the determination unit determines that the abnormality is present A candidate for an abnormal location and an abnormal content is also given based on a combination of the presence / absence of abnormality related to a plurality of state quantities detected by the driving direction line state quantity detection circuit.

  In such a single-line automatic blocking device normal monitoring device of the present invention (Solution 1), the main purpose is preventive maintenance of the occurrence of a failure in the operation direction line that occupies most of the failures occurring in the single-line automatic blocking device, Since the use at the time of failure has become subordinate, the operation state of the driving direction line is continuously monitored under the operation of the driving direction line during normal train operation, and power transmission / reception of the driving direction line is performed. By constantly comparing the voltage and current at the end with the normal state and detecting the change, it is possible to find an abnormality that is a sign before a failure occurs.

In particular, in the single-line automatic closing device, failure frequently occurs when the line resistance of the driving direction line greatly changes from the normal state. In the single-line automatic blocking unit normal monitoring device of the present invention, the detection target related to the driving direction line Since the state quantity is expanded to include not only the voltage but also the current, the change in the line resistance has reached a level that can be said to be a predictive level even if it has not yet increased to the fault-causing level. However, if the influence is exerted, the change is detected, so that the abnormality can be reliably detected with higher sensitivity than before.
Therefore, according to the present invention, it is possible to realize a single-line automatic closing device normal monitoring device that can detect even a slight abnormality in the driving direction line, and as a result, monitors the applied voltage and energization current of the driving direction line. If a significant change is detected from the normal state, the failure of the single-line automatic blocker can be prevented from occurring by notifying maintenance personnel that the abnormality leading to the failure has occurred in the driving direction line and restoring it. And can contribute to prevention.

  Further, in the normal monitoring device of the single wire automatic closing device according to the present invention (Solution 2), the state quantity of the detection target and the criterion for the operation direction line is extended to include not only the voltage and current but also the ground resistance. In addition, the sensitivity and certainty of abnormality detection of failure signs are further improved.

  Furthermore, in the single-line automatic blocker normal state monitoring device of the present invention (solution 3), an abnormal location and an abnormal content candidate are listed when an abnormality is detected. Therefore, it is possible to know what kind of failure is likely to occur in the driving direction line before the failure by the notification, etc. Causes can be investigated and removed.

Example 1 of the present invention shows the configuration of a monitoring device (single-line automatic blocking device normal monitoring device), (a) is a schematic diagram of the track, (b) is a schematic diagram of the operating direction of the single-line automatic blocking device, (c) Is a schematic block diagram of a monitoring device. (A) is a principal part block diagram of a monitoring apparatus, (b) is a circuit diagram of a driving | operation direction line state quantity detection circuit. It is a circuit diagram of the driving | running | working direction relay circuit of a single wire automatic blocker.

A specific form for carrying out such a single-wire automatic blocker normal state monitoring device of the present invention will be described with reference to Example 1 below.
The first embodiment shown in FIGS. 1 to 3 embodies all the above-described solving means 1 to 3 (claims 1 to 3 at the beginning of the application).
In addition, since the same reference numerals are given to the same constituent elements as those in the prior art in the illustration thereof, the description in the background art section is also common to the following embodiments, and thus overlaps. The description will be omitted, and the following description will focus on differences from the prior art.

A specific configuration of the single-wire automatic blocking apparatus normal monitoring apparatus according to the first embodiment of the present invention will be described with reference to the drawings.
1A is a schematic diagram of a single-line section line 10, FIG. 1B is a schematic diagram of operating direction levers 21 and 22 of a single-line automatic blocker 30, and FIG. 1C is a single-line automatic blocker according to a single-line automatic blocker 30. 3 is a schematic block diagram of a normal monitoring device 50. FIG. FIG. 2 is a principal block diagram of the normal monitoring device 50, and FIG. 2B is a circuit diagram of the operation direction line state quantity detection circuits 51 and 52.

  The single-line automatic blocking device normal monitoring device 50 is hereinafter simply referred to as the normal monitoring device 50, but the single-line automatic blocking device 30 (see FIG. 3) installed on the single-line section line 10 (see FIGS. 3 and 1A) described above. 3 (see FIG. 1 (b)), and is added and added. First, an outline will be given (see FIG. 1 (c)), and an operation for acquiring the operation direction M of the single-line automatic closing device 30 will be described. Direction acquisition means, operation direction line state quantity detection circuits 51 and 52 for detecting the voltage V and current A and the ground resistance Ω related to the operation direction lines 36 to 38 of the single-line automatic blocking device 30, and the operation direction lines 36 to 38. A determination unit that determines whether or not there is an abnormality that is a sign of a failure of the single-line automatic blocking device 30 due to a change in the resistance value over time based on the operation direction M, the voltage V, and the grounding resistance Ω; and an operation direction line state quantity detection circuit 51 , 52 detection results and determination unit The output part 54 which outputs the determination result of 53, and the driving | operation direction line transformer rectifier 55 which supplies electric power to the driving | operation direction lines 36-38 are provided.

  More specifically (see FIG. 2A), the operation direction line transformer rectifier 55 is composed of two sets of transformer rectifiers supplied to the FR line and the FKR line included in the operation direction lines 36 to 38, and has the following characteristics. Have. Specifically, each of the DCB-2 relays and communication lines constituting the operation direction line, for example, a DC load capable of supplying a current of rated 20 mA to a series load of the communication line, that is, a series resistance of a plurality of relays and a communication line length between stations. The output voltage is variable. In addition, in order to increase measurement error and accuracy, the ripples contained are minimized. Furthermore, the output current is basically a DCB-2 type relay rated at 20 mA, but it is desired that a maximum output of 30 mA or more is desired, and the output voltage at that time is DCB-2 type centering on 24 V when the output current is 20 mA. It is preferable to change in an ohmic manner from the minimum operating voltage of the relay to the maximum continuously usable voltage. In addition, if the operation direction line transformer rectifier of the single-line automatic closing device 30 satisfies this condition, or if the existing equipment is modified to satisfy the condition, the operation direction line transformer rectifier 55 does not need to be newly installed. It is not essential for the normal monitoring device 50.

  The driving direction acquisition means (see FIGS. 1 (c) and 2 (a)) is a relay signal in the driving direction M from the corresponding relay of the ascending partial circuit 31 on the stop 11 side of the single-line automatic closing device 30 (for example, FIG. 3). The relay signal in the driving direction M (for example, relay 1RFR in FIG. 3 and the like) from the corresponding relay in the part of the single-line automatic closing device 30 and the down part circuit 32 on the stop 12 side of the single-line automatic closing device 30 (Upper / falling contact) input part. Both driving directions M are basically the same in the direction setting of “upward direction” or “downward direction”, apart from a transient state such as when the driving direction levers 21 and 22 are operated. The specific open / close state of the relay contact is reversed, and when the operation direction M is set to “upward”, the upstream partial circuit 31 is on the power transmission side and the downstream partial circuit 32 is on the power reception side with respect to the operational direction lines 36 to 38. Thus, when the driving direction M is set to “downward”, relay conditions are assigned to the driving direction lines 36 to 38 so that the downstream partial circuit 32 is on the power transmission side and the upstream partial circuit 31 is on the power reception side. .

  The operation direction line state quantity detection circuits 51 and 52 (see FIG. 2A) are provided separately at both ends of the operation direction lines 36 to 38. In this example, the operation direction line state quantity detection circuit is provided. 51 is attached to the power transmission / reception end on the upstream partial circuit 31 side in the driving direction lines 36 to 38, and the driving direction line state quantity detection circuit 52 is connected to the power transmission / reception end on the downstream partial circuit 32 side in the driving direction lines 36 to 38. It is attached. And (refer FIG. 2 (a), (b)), the driving | running | working direction line state quantity detection circuits 51 and 52 are the attachment place, respectively, and the FKR line voltage Vfkr between the electric wires 36 and 37 as the voltage V, the electric wires 38, 37, the FR line voltage Vfr between the wires 37 is detected, the FKR line current Afkr of the wire 36 and the FR line current Afr of the wire 38 are detected as the current A, and the ground resistance between the wire 37 and the ground GND is detected as the ground resistance Ω. Ωc is detected. At that time, the voltage V is measured with an input impedance of 1 MΩ (in this example, it is a DC circuit, so only the pure resistance is 1 MΩ), the current A is measured with an induced magnetic field, and the ground resistance Ω is also measured. By performing detection using a method such as measuring by a method having a high internal resistance, the operation of the single-wire automatic closing device 30 using the operation direction lines 36 to 38 is not adversely affected.

  The determination unit 53 (see FIGS. 1C and 2A) is mainly composed of an information processing device such as a programmable microprocessor system or a personal computer, and driving direction line state quantity detection circuits 51 and 52 are provided. A / D conversion circuit for acquiring the measured values V, A, Ω detected in step 1, a digital I / O circuit for inputting a relay signal in the driving direction M from the single-wire automatic closing device 30, and ground resistance Ω. It also has a grounding line. In addition, the determination unit 53 measures the measured values V, at regular intervals, for example, when the set state of the driving direction M is stable, at any time during normal operation when the single-line automatic closing device 30 is used in accordance with daily train entrainment on the single-line section track 10. A and Ω are taken in and the suitability is determined. A normal value referred to as a reference value for the suitability determination is stored in a nonvolatile memory or the like. As the normal value and the reference value, values determined on the desk based on the design conditions may be adopted. In this example, the determination unit 53 is operated in the initialization mode after confirming the normal operation of the single-wire automatic closing device 30. The measured values V, A, and Ω acquired at that time are stored as normal values and reference values.

  As a specific example of the suitability determination by the determination unit 53, the voltage V (specifically, each of the FR line voltage Vfr and the FKR line voltage Vfkr) is set according to the operation direction M and the set voltage value during power transmission and the time when power is received. The voltage V at the time of operation of the operation direction lines 36 to 38, that is, at the time of establishing the closure, is always compared with the reference voltage value, with the set voltage value corresponding to any of the set voltage values as the reference voltage. Is within the range of the set voltage value ± 5%, it is determined as normal, but when the voltage V is out of the range of the set voltage value ± 5%, it is determined that an abnormality has occurred. Further, the current A (specifically, each of the FR line current Afr and the FKR line current Afkr) corresponds to either the set current value during power transmission or the set current value during power reception according to the operation direction M. The current A at the time of operation of the operation direction lines 36 to 38, that is, at the time of establishment of the block is always compared with the standard set current value with the current set current value (about 20 mA) as the reference current. If it falls within the range of (about 18 mA to about 22 mA), it is determined to be normal, but if the current A is out of the range of the set current value ± 10%, it is determined that an abnormality has occurred. Further, regarding the ground resistance Ω (specifically, the ground resistance Ωc), when it is less than 1 MΩ, it is determined that an abnormality has occurred.

  This determination unit 53 is not limited to the suitability based on each state quantity described above, but also performs rough estimation of the cause of abnormality. That is, when it is determined that there is an abnormality, candidates for an abnormal location and an abnormal content may be given based on a combination of presence / absence of abnormality related to a plurality of state quantities detected by the driving direction line state quantity detection circuits 51 and 52. Do. To give some specific examples (refer to the first row of the determination table of FIG. 2A), when the up-part circuit 31 on the stop 11 side of the single-line automatic blocking device 30 is on the power transmission side. (M), the FR line voltage Vfr is abnormally higher than the normal value (↑) with respect to the measured values V, A, and Ω detected by the operation direction line state quantity detection circuit 51 on the upstream partial circuit 31 side, and the FR line current Afr. Is abnormally less than the normal value (↓), and the FKR line voltage Vfkr, FKR line current Afkr, and ground resistance Ωc are within the proper range of normal values (○). Candidates for the cause of abnormalities such as defective connection points, defective DFR contacts, and diode degradation are listed.

  Also, (see the second row of the determination table of FIG. 2A), when the same upstream partial circuit 31 is on the power receiving side (M), the driving direction line state quantity detection on the upstream partial circuit 31 side is also performed. Regarding the measured values V, A, and Ω detected by the circuit 51, the FR line voltage Vfr and the FR line current Afr are within the proper range of normal values (◯), and the FKR line voltage Vfkr is abnormally lower than the normal value (↓ ) If the FKR line current Afkr is abnormally less than the normal value (↓) and the grounding resistance Ωc is less than 1MΩ (×), poor insulation between the FKR line and the C line, and ground generation in the operation direction line , Candidates for the cause of abnormalities such as cable in the line or flooding of connection points have been cited.

  Further (see the third row of the determination table of FIG. 2A), when the down partial circuit 32 on the stop 12 side of the single-line automatic closing device 30 is on the power transmission side (M), the FR line voltage Vfr and the FR line current Afr are within the proper range of normal values (◯), and the FR line voltage Vfr is measured for the measured values V, A, and Ω detected by the operation direction line state quantity detection circuit 52 on the downstream partial circuit 32 side. Is abnormally higher than normal (↑), FR line current Afr is abnormally less than normal (↓), FKR line voltage Vfkr is abnormally lower than normal (↓), and FKR line current Afkr is abnormal than normal If the ground resistance Ωc is less than 1 MΩ (×), leakage between the FR line and FKR line, ground generation in the operation direction line, cable in the line or inundation of the connection point may occur. Possible causes are listed It has become the jar.

  Also, (see the fourth row of the determination table of FIG. 2A), when the same downstream partial circuit 32 is on the power receiving side (M), the operation direction line state quantity detection on the downstream partial circuit 32 side is also performed. Regarding the measured values V, A, and Ω detected by the circuit 52, the FR line voltage Vfr and the FR line current Afr are within the proper range of normal values (◯), and the FKR line voltage Vfkr is abnormally lower than the normal value (↓ ) If the FKR line current Afkr is abnormally less than the normal value (↓) and the grounding resistance Ωc is 1 MΩ or more and within the appropriate range (○), the series resistance of the FKR line increases or the connection location in the line is poor. Candidates for the cause of abnormality such as contact failure of relays TR and HSLR and failure of FKR transformer / rectifier are listed.

  Although the output unit 54 (see FIG. 1 (c)) shows a liquid crystal panel display screen of a notebook computer and an image to be output to a remote monitoring device by a relay contact or the like, it immediately notifies a maintenance person with a visual display. Regardless of the mode or the mode of recording data in preparation for analysis at an appropriate time, it is sufficient if the determination result of the determination unit 53 can be output, and the detection result of the operation direction line state quantity detection circuits 51 and 52 can be output. Alternatively, it may be integrated with the determination unit 53 or may be embodied as a separate body, may be a printer that prints out on a paper medium or the like, and is a speaker that emits sound or alarm sound. Alternatively, data transmission means using a communication line or a network may be used.

  About the normal condition monitoring apparatus 50 (single line automatic blocking apparatus normal condition monitoring apparatus) of this Example 1, the use aspect and operation | movement are demonstrated.

  This normal state monitoring device 50 is for detecting early signs of a failure early by continuously monitoring the state of the single-line automatic closing device 30 and the operation direction lines 36 to 38. Simultaneously with the installation of the driving direction lines 36 to 38, the single line section line 10 may be installed. Alternatively, the existing single line automatic closing device 30 or the driving direction lines 36 to 38 may be additionally installed. At that time, the single-wire automatic closing device 30 is partially modified so that the driving direction M can be taken in, and the driving direction line states are set in the driving direction lines 36 to 38 so that the measured values V, A, and Ω of the driving direction line state can be detected. Quantity detection circuits 51 and 52 are additionally provided. If it is necessary to stabilize the transmission / reception power of the operation direction lines 36 to 38, the operation direction line transformer / rectifier 55 is also provided so that the electric power is supplied to the single-line automatic closing device 30 and the operation direction lines 36 to 38. .

  Then, under the control of the interlocking device or independently, the single-wire automatic closing device 30 and the driving direction lines 36 to 38 are operating normally, and inspection with a ready-made jig and visual reading of the measured values V, A, Ω are performed. When the confirmation is obtained, the normal monitoring device 50, in particular, the determination unit 53 is operated in the initialization mode, and the measured values V, A, Ω when the operation direction M is set to the upward direction are obtained. Then, the measured values V, A, and Ω when the driving direction M is set to the downward direction are stored as normal values that will be the basis for the subsequent suitability determination. Since the preparation for normal monitoring is thus completed, the normal monitoring device 50 is operated. When the single wire automatic closing device 30 is operating, the normal state monitoring device 50 is also operated as much as possible to continuously monitor.

  Then, when the single-line automatic blocking device 30 and the driving direction lines 36 to 38 fail and the single-line automatic blocking device 30 does not operate normally, the single-line automatic blocking device 30 and the driving direction lines 36 to 38 are normal. Even during normal operation, the normal monitoring device 50 operates to determine whether the measured values V, A, and Ω are appropriate. Specifically, the measured values V, A, and Ω, more specifically, the FR line voltage Vfr, FKR line voltage Vfkr, FR line current Afr, FKR line current Afkr, and ground resistance during power transmission / reception on the upstream partial circuit 31 side. When obtaining normal values and reference values for Ωc, FR line voltage Vfr, FKR line voltage Vfkr, FR line current Afr, FKR line current Afkr, and grounding resistance Ωc at the time of transmission / reception on the up / down partial circuit 32 side It is examined whether the change over time from a predetermined ratio such as ± 5% or ± 10% or a predetermined value such as 1 MΩ has been exceeded, and if it exceeds, the possibility of failure occurring in the near future has increased. Determined as abnormal. In addition, when an abnormality is detected in a plurality of these measured values, candidates for an abnormal location and abnormal content are listed. Further, the output unit 54 notifies the maintenance staff to that effect.

  As described above, the normal monitoring device 50 (single-wire automatic blocking device normal monitoring device) constantly monitors the voltage and current transmitted or received by the single-wire automatic blocking device 30 with respect to the operation direction lines 36 to 38, and the operation direction line. In 36 to 38, by detecting that the line resistance or the like has changed from the normal state due to a connection failure or the like, an alarm is generated in a state where a minor abnormality that does not cause a failure in the single-wire automatic closing device 30 has occurred. Occur. In addition, when the driving direction lines 36 to 38 are defective, the occurrence of ground, which is an abnormality in grounding resistance, is often observed, and the detection is also performed. Furthermore, when an abnormality is detected, the contents of the abnormality are determined and proposed to maintenance personnel. These determination contents are the discovery of an abnormality relating to the driving direction lines 36 to 38, and the output contents of the determination result are a list of candidates that cause the abnormality, and are sign detection and approximate cause output. This is because even if an abnormality is discovered, recovery is not a matter of time as in the event of a failure, but there is time in days, so this is considered sufficient.

When the normal monitoring device 50 is compared with the conventional device monitoring device described above, the device monitoring device described above identifies the fault location by collecting almost all information related to the operation of the single-line automatic closing device at both ends when a failure occurs. The normal monitoring device 50 of the present invention is a simple device that can perform the function only at one station by monitoring the operating state of the voltage / current of the driving direction line. It has become.
That is, the normal monitoring device 50 knows the operation voltage / current in the operation state of the operation line of the operation direction line constituting the operation mode of the single-line automatic blocking device and the part of the single-line automatic blocking device, By comparing changes when the operating voltage and current change due to the occurrence of an abnormality, the abnormality is detected and acquired before the failure of the single-line automatic blocker, and the outline of the abnormality is analyzed and displayed. It has a function.

For this reason, it is not possible to strictly identify the location of the cause of failure or abnormality, but the operation direction line that occupies most of the cause of failure in the single-line automatic blocker is an abnormality that is a sign of failure before it becomes a failure. By detecting and acquiring the error, transmitting the occurrence to the monitoring location, and displaying the outline of the error, maintenance personnel can eliminate and restore the cause of the error and prevent a failure of the single-line automatic blocker. Become.
In addition, even if a failure occurs suddenly in the single-line automatic closing device, the cause of the failure can be searched for based on the same principle as described above, so that the recovery time when the failure occurs can be shortened. Therefore, it is useful not only in preventing the occurrence of a failure but also in the event of a failure.

  In short, the normal monitoring device 50 uses the fact that the voltage and current flowing through the circuit fluctuate ohmicly due to fluctuations in load resistance, and indirectly detects fluctuations in the series resistance of the driving direction line due to abnormalities in the driving direction line. In the minor abnormality before the driving direction line loses its function, an abnormality alarm is issued. Therefore, in the maintenance of the operation direction line of the single-line automatic blocker, by using the normal monitoring device 50, it is possible to grasp the change from the normal state of the facility that has not been made so far. And preventive maintenance before the failure occurs. In addition, even when a sudden failure that cannot be detected as preventive maintenance (for example, communication cable damage due to shotgun firing on a communication cable) or the like, the normal monitoring device 50 can grasp a considerable content about the cause of the failure that has occurred. Therefore, the failure recovery time can be shortened.

[Others]
The normal monitoring device 50 according to the present invention is mainly intended to detect at an early stage an abnormality that is a sign of a failure of the single-wire automatic closing device 30 due to a change with time in the resistance values of the driving direction lines 36 to 38. Accordingly, the determination unit 53 calculates the resistance estimated value from the measured values V and A, assuming that the resistance value related to the driving direction lines 36 to 38 is more directly represented, for example, [Voltage V / Current A]. More specifically, [FR line voltage Vfr / FR line current Afr] and [FKR line voltage Vfkr / FKR line current Afkr] are calculated, and the change over time from the normal value and the reference value related to the estimated resistance value is calculated. The presence or absence of an abnormality may be determined according to the above.

  Further, the driving direction line state quantity detected by the driving direction line state quantity detection circuits 51 and 52 is not limited to the above-described one. For example, the voltage V may be the driving direction in addition to or instead of the above. The voltage between the lines 36 to 38 and the ground GND, the current A is the energization current of the electric wire 37 and the total current of the operation direction lines 36 to 38, and the ground resistance Ω is the electric wires 36 and 38 and the ground GND. A resistance between the two may be detected.

  Further, in the above embodiment, the state quantity of the driving direction lines 36 to 38 is not detected at the intermediate partial circuit 33 of the single-line automatic closing device 30, but the driving direction line state quantity detection circuit 51, A circuit similar to 52 may be provided, and the function of the determination unit 53 may be expanded so as to determine the suitability by acquiring the measured values V, A, and Ω. In this way, by monitoring the voltage V, current A, and ground resistance Ω of the operation direction lines 36 to 38 at the installation location of the block traffic signal 13 in the middle of the station, the accuracy of detecting an abnormal state and narrowing down the abnormal content is increased. be able to.

  Further, in the above embodiment, the driving direction line state quantity detection circuit 51 on the upstream partial circuit 31 side and the driving direction line state quantity detection circuit 52 on the downstream partial circuit 32 side of the single-line automatic blocking device 30 are both included in one determination unit 53. Although the connected configuration example is illustrated, the determination unit 53 may be embodied by a group of computers installed in a distributed manner, and further, the measured values V, A, and Ω detected by the operation direction line state quantity detection circuit 51 are used. The determination based on the upstream partial circuit 31 side is performed, and the determination based on the measurement values V, A, and Ω detected by the operation direction line state quantity detection circuit 52 is performed by the downstream partial circuit 32 side computer. good.

10 ... single track section, 11 ... stop (starting side A station, ascending A station),
12 ... Stop station (end station B station, descending station B), 13 ... traffic signal,
21: Driving direction lever (up), 22 ... Driving direction lever (down),
30 ... Single wire automatic closing device (running direction relay circuit),
31 ... Upstream partial circuit, 32 ... Downstream partial circuit, 33 ... Intermediate partial circuit,
36 ... Electric wires (FKR line, insulator line, driving direction line),
37 ... Electric wires (FKR line and FR line, insulator line, driving direction line),
38 ... Electric wire (FR line, insulator line, driving direction line),
50 ... Normal monitoring device (single wire automatic closing device normal monitoring device),
51, 52 ... operation direction line state quantity detection circuit (voltage, current, ground resistance),
53 ... determination unit (resistance value change with time determination), 54 ... output unit (display, transmission, recording),
55 ... Operation direction line transformer rectifier (relay drive current supply part)

Claims (2)

Driving direction acquisition means for acquiring the driving direction of the single line automatic closing device, driving direction line state quantity detection circuit for detecting voltage and current relating to the driving direction line of the single line automatic blocking device, and resistance value relating to the driving direction line the single line automatic blockage change determination unit based on the change from the initial acquisition value of the current in the presence or absence of sign become abnormal failure from the initial acquisition value of the voltage and the driving direction of the apparatus according to the aging of A single-line automatic closing device normal monitoring device comprising :
When the determination unit determines that the abnormality is present, the candidate of the abnormality location and the abnormality content is listed based on a combination of presence / absence of abnormality relating to the plurality of state quantities detected by the driving direction line state quantity detection circuit. single line automatic blocking device normally monitor you characterized in that it is adapted to be performed.   The operation direction line state quantity detection circuit also detects a ground resistance related to the operation direction line, and the determination unit determines the presence / absence of the abnormality in the operation direction, the voltage, the current, and the ground resistance. The single-line automatic closing device normal monitoring device according to claim 1, wherein the single-wire automatic closing device is a normal state monitoring device.

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