JP2013078963A - Crossing controller for end point and adjustment method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect a train at both end points of a crossing only by one crossing controller for an end point.SOLUTION: The open circuit-type crossing controller 50 for the end point includes: a switching circuit unit 56 connected between controller internal lines AA, BB and branch lines aa, bb in an interposed manner, the switching circuit unit switching a transmitting destination of review oscillation signals output from an oscillation detection unit 25 to a first connecting terminal 51 and an up end point beyond it in a first switching state, and switching the transmitting destination of review oscillation signals to a second connecting terminal 52 and a down end point BDC beyond it; and a switching control unit 55 which causes the switching circuit unit 56 to take either one switching state of the first and second switching states according to train operating direction instructions. The controller includes, in addition to a first adjustment unit 25a which adjusts the level of review oscillation signals transmitted through the controller internal lines AA, BB, a second adjustment unit 57 which adjusts the level of review oscillation signals transmitted through the branch lines aa, bb.

Description

The present invention relates to an open-circuit-type end point crossing controller, which is a kind of short track circuit that can be used without insulation, among railroad crossing safety devices installed at a crossing in a single track section of a railway.
The present invention also relates to a method for adjusting such an end point crossing controller.
In addition, in the claims and specification attached to the present application, the “train operation direction” is referred to as the “train operation direction”. Further, whether the output indicating the “train operation direction” is a relay output or a signal output other than the relay, it is referred to as “train operation direction instruction”.

  Railroad crossing safety devices installed at railroad crossings (see Non-Patent Documents 1 and 2, for example) are railroad crossing controllers for detecting trains, speakers for sounding alarms, and alarms by flashing light. A level crossing alarm equipped with a warning light, a level crossing breaker in the first type crossing but not in the type 3 level crossing, and a level crossing alarm or level crossing based on the detection result of the level crossing controller And a crossing control device for controlling the operation of the vehicle. And if a train is detected by the level crossing controller installed at the starting point before the level crossing, the level crossing alarm will give an alarm, and after a while, the level 1 crossing will be lowered and the level crossing barrier will be lowered. When the train crossing controller installed at the end point after the passage detects the passage of the train, the alarm is stopped and the level crossing barrier is raised at the first type of crossing. Hereinafter, the structure of such a crossing safety device and a crossing controller will be described with reference to the drawings.

  6A is a layout diagram of the level crossing controllers 21 to 24 in the double track section, FIG. 6B is a layout diagram of the level crossing controllers 21, 23, and 24 in the single track section, and FIG. 6C is a level crossing control device for a single track. 31 is a block diagram of a railroad crossing safety device for a single line including 31, (d) is a connection diagram of a start-point crossing controller 21, 23 of a closed circuit type, and (e) is a crossing controller 22 for an end point of an open circuit type, 24 is a connection diagram of 24. FIG. FIG. 7A is a block diagram when an oscillating type is adopted for the end point crossing controller 24, and FIG. It is a block diagram when a shape is adopted. Further, FIG. 8 (a) is a schematic configuration diagram related to a currently installed single-track level crossing safety device in consideration of cost, and FIG. 8 (b) is a single-line level crossing that can be said to be ideal if cost is ignored. It is a schematic block diagram concerning a security device.

  In the crossing safety device relating to the crossing 8 in the double-track section (see FIG. 6A), the starting point crossing controller 21 is installed at the downstream starting point ADC of the front side of the crossing 8 with respect to the down line 10. At the same time, the end point crossing controller 22 is installed at the end point BDC at the end point of the railroad crossing 8 at the end point after passing the train. A starting point crossing controller 23 is installed at the point CDC, and an end point crossing controller 24 is installed at the starting point DDC at the post-train passing position on the starting point side of the crossing 8. Starting points ADC and CDC are used to ensure the time from when a railroad crossing warning is issued until the train reaches railroad crossing 8, for example, when the train travel speed is 100 km / H at the railroad crossing between stations. Although it is set at a distance of about 700 to 800 m, the stop points BDC and DDC are near 20 to 30 m, for example, from the level crossing 8 in order to quickly detect the passage of the train while avoiding malfunctions due to crossings and the like. It is often set to.

  On the other hand (see FIG. 6 (b)), in the railroad crossing safety device according to the railroad crossing 8 provided in the single track section having only one track 10, the starting start point is divided on both sides of the railroad crossing 8 with respect to the same track 10. The ADC and the ascending start point CDC are set, and the starting point crossing controller 21 is set at the descending starting point ADC, while the starting point crossing controller 23 is set at the ascending start point CDC. Also, for the same line 10, only one of the down end point BDC and the up end point DDC is set as the up / down common end point, and the end point crossing controller is installed at the common end point. The For example, when the up / down end point DDC is selected and set between the crossing 8 and the down start point ADC (in the case of FIG. 6B), the end point crossing controller 24 is installed there, Since the down end point BDC is not set, the end point crossing controller 22 is not installed. In this way, the end point close to the railroad crossing 8 is shared, thereby suppressing an excessive increase in the facility cost.

  Therefore (see FIG. 6C), the railroad crossing safety device related to the railroad crossing 8 in the single track section is the start-point level crossing control installed at each of the downward start point ADC, the common end point DDC, and the upstream start point CDC on the same line 10. The train detection results are input from the child 21, the starting point crossing controller 23, the end point crossing controller 24, and the crossing controllers 21, 23, and 24, and approaching the train crossing by logical judgment based on the train detection result A railroad crossing control device 31 for recognizing the passage and the train driving direction, a speaker for generating an alarm by sound, an alarm lamp 32 for generating an alarm by flashing, and a railroad crossing breaker 33 at the first type of railroad crossing And has. In addition, although there are a failure indicator, a train direction indicator, etc. provided at a crossing with a plurality of crossing lines such as a double line, the description thereof is omitted.

  When the down train is present between the down start point ADC and the common end point DDC, the down SR relay (down train operation direction instruction) is de-energized. In other cases, the down SR relay is excited. Is done. Further, when the upstream train is present between the upstream starting point CDC and the common end point DDC, the upstream SR relay (upward train operation direction instruction) is de-energized. In other cases, the upstream SR relay is excited. Is done. The alarm R relay circuit which becomes the final alarm output is configured by combining the down SR and the up SR output according to the direction as a result of discriminating the train operation direction. And according to the conditions of this alarm R relay, devices called alarm sound controller, alarm light controller (intermittent relay), crossing circuit breaker control relay are driven, and their outputs are alarm sound speaker, alarm light 32, It is sent to the railroad crossing breaker 33, and an alarm is issued by sound and light, and road traffic is blocked by a barrier.

  Here (see FIGS. 6 (d) and 6 (e)), the level crossing controller will be described in detail. For the fail-safe at the time of failure, the starting point level crossing controller installed at the down start point ADC or the up start point CDC. Closed circuit type crossing controllers 21 and 23 are used (see FIG. 6 (d)), and the end point crossing controllers 22 and 24 installed at the down end point BDC and the up end point DDC are open circuits. A shape crossing controller is used (see FIG. 6 (e)). Among them, the closed-circuit type railroad crossing controllers 21 and 23 (see FIG. 6 (d)) use two pairs of connection wires each having one end attached to each of the pair of rails 11 and 12 forming the track 10 by welding or the like. The attachment interval of the connection line attachment location in the track 10 is about 15 m. A closed circuit is always configured via the rails 11 and 12 between the connecting line attachment points. When the train is not present, the oscillation signal for checking is transmitted to the closed circuit once for output of the level crossing controller. While the start R relay is excited, if the train is in the section of the train detection length of about 30 m, the rails 11 and 12 are short-circuited on the train axle, so the transmission of the oscillation signal for verification is cut off. Thus, the starting R relay is de-energized.

  On the other hand, the open-circuit type railroad crossing controllers 22 and 24 (see FIG. 6 (e)) use only a pair of connecting wires, one end of which is attached to each of the pair of rails 11 and 12 forming the track 10 by welding or the like. Yes, the oscillation signal for verification is always sent to the connection line, but since the rails 11 and 12 are not connected to each other, the open circuit is normally configured. Even if the oscillating signal is transmitted, the transmission of the oscillating signal for verification is cut off between the rails 11 and 12 when the train is not present, and the end R relay (output relay) for the output of the crossing controller is de-energized It has become. And if a train enters a section with a train detection length of about 30 m and the rails 11 and 12 are short-circuited on the train axle, the open circuit becomes temporarily closed, and the oscillation for verification The signal is transmitted once, and the termination R relay (output relay) is excited.

  Such open-circuit-type end-point crossing controllers 22 and 24 (see FIG. 7) internally try to send the check oscillation signal to the connection line and check the state of the round-trip transmission of the check oscillation signal. An oscillation presence / absence detecting unit 25 to detect, and a relay driving unit 26 that excites the termination R relay when a round transmission of the verification oscillation signal is detected, but does not excite the termination R relay when a round transmission of the verification oscillation signal is not detected. It has. In the oscillation presence / absence detection unit 25, an oscillation type whose connection line is a part of the oscillation loop of the oscillation circuit (see FIG. 7A), an oscillation signal for verification is generated by the transmission unit and transmitted through the connection line. The transmission / reception type H type detected by the receiving unit (see FIG. 7B) and two types have been put to practical use. However, in the present invention described later, the difference in the method of the crossing controller for the end point is a problem. Since the details are not shown, only the details are illustrated, and the connection state with the connection lines A1 and B1 (first connection lines) will be described in detail by taking the end point crossing controller 24 as a specific example.

  One connection line A1 of the pair of connection lines A1 and B1 has one end connected to the rail 11 by welding or the like, and the other connection line B1 has one end connected to the rail 12 (see FIG. 7). 14, any of the connection lines A <b> 1 and B <b> 1 extends toward the end point crossing controller 24 and is connected to the oscillation presence / absence detection unit 25. Although it is not essential, since the end point crossing controller 24 is usually housed in the crossing equipment box, the connection lines A1 and B1 are not directly connected to the oscillation presence / absence detecting unit 25. Indirectly connected via an extension line. That is, each of the connection lines A1 and B1 is connected to the terminal of the wiring terminal board 28, and is extended from there to the terminal of the housing of the end point crossing controller 24 by the rail 27 in the crossing device box. Are connected to the oscillation presence / absence detection unit 25 by the control-internal wires AA and BB, and the oscillation signal for verification is transmitted from the oscillation presence / absence detection unit 25.

Further, the contact point of the end R relay of the relay drive unit 26 is connected to the input unit of the level crossing control device 31 by means of wiring in the level crossing equipment box for transmission of a relay signal.
Further, the end point crossing controller 24 may be an oscillation type (see FIG. 7 (a)) or an H type (see FIG. 7 (b)). In order to adjust to the specified value, an adjuster 25a (first adjusting unit) is provided for raising / lowering (adjusting / adjusting) the level of the oscillation signal for verification transmitted through the control-internal wires AA and BB. The illustrated adjuster 25a is provided in the oscillation presence / absence detecting unit 25 so as to adjust the input level by manual operation, but is fixed after adjusting the level of the oscillation signal for verification. If possible, the output level may be adjusted, may be provided in an attached state to the oscillation presence / absence detecting unit 25, or may be provided in the inter-controller wirings AA and BB in an inserted state. Also good.

  Thus, in the current level crossing safety device related to the level crossing 8 in the single track section (see FIG. 8A), the common end point DDC is set near the level crossing 8 on the track 10, and further away from the level crossing 8 The down start point ADC and the up start point CDC are set on both sides of the level crossing 8, and at the down start point ADC, one end of the connecting line leading to the closed circuit type start point crossing controller 21 is welded to the line 10 and shared. One end of a connection line (first connection lines A1, B1) reaching the end point crossing controller 24 of the open circuit type is welded to the line 10 at the connection line attachment point 14 of the end point DDC, and closed at the upstream start point CDC. One end of a connection line leading to the electrical path type starting point crossing controller 23 is connected to the line 10. The level crossing control device 31 controls the operation of the warning light 32 according to the excitation presence / absence state of the start R relay of the level crossing controller 21, the end R relay of the level crossing controller 24, and the start R relay of the level crossing controller 23. Furthermore, at the first type of level crossing, the level crossing control device 31 also controls the operation of the level crossing breaker 33, and an area between the ascending start point CDC and the common end point DDC is an ascending level crossing control section, and is shared with the descending start point ADC. A section between the end point DDC and the lower level crossing control section.

  That is, it is said that the train exists in the ascending level crossing control section until the train has entered the train detection length section of the common starting point DDC after entering the train detection length section of the ascending starting point CDC. A determination is made, and the up SR relay indicating that the train operation direction is up is changed from the normal excitation to the non-excitation, an alarm is issued by the warning light 32, and at the first type of level crossing, the level crossing breaker 33 is Road traffic is blocked. In addition, the train exists in the descending railroad crossing control section from when it enters the train detection length section of the descending start point ADC until it has finished entering the train detection length section of the common end point DDC. A determination is made that the down SR relay indicating that the train operation direction is down is changed from normal excitation to non-excitation, an alarm is issued by the warning light 32, and at the first type of level crossing, the level crossing breaker 33 is activated. Road traffic is blocked. Further, at other times, it is determined that no train is present in the up crossing control section or down crossing control section, and no alarm is issued from the speaker or the warning light 32, so that the first Road traffic is not blocked at the level crossing 8.

Overview of Signals for Railway Engineers Signal Series 1 “General Railway Signals” Japan Railway Electrical Engineering Association, issued on March 18, 2005, revised p. 107-118 Introduction to Electricity for Railway Engineers Signal Series 8 “Level Crossing Security Device” Japan Railway Electrical Engineering Association, issued October 30, 2007, 4th edition, p. 35-120

Thus, at present, in the crossing safety device installed on the crossing 8 of the track 10 in the single track section, it is detected that the train has passed the crossing road, the crossing warning is stopped, and the crossing is interrupted at the first type of crossing. The open-circuit type railroad crossing controller used for raising the machine 33 is connected to the left and right rails 11 and 12 via connection lines only on either the starting side or the end side across the railroad crossing. It is common to be installed.
Among these cases, when the end point crossing controller 24 is attached to the starting point side of the crossing 8 (see FIG. 8A), the crossing 8 belongs to the up crossing control section, so Therefore, regardless of the train speed, it can be detected that the up train has completely passed the railroad crossing, and when it has passed, the alarm stops and the required function is performed as it is.

On the other hand, for the down train, the level crossing 8 does not belong to the down level crossing control section. Therefore, depending on the speed of the train or the width of the level crossing, the crossing passes even though the down train is passing the level crossing. In that case, the alarm stops at that point, and the intended purpose cannot be achieved.
Rather than stopping the alarm immediately after the train has passed the common end point DDC, it waits for the preset delay time to elapse and then stops the alarm, etc. If the speed of the train is slightly slower than normal, or more than that, it is not considered that the descending train has passed through the railroad crossing, but the train speed is too slow. When the train stops at the railroad crossing 8, it may happen that the descending train has passed before it has passed the railroad crossing 8.

In addition, when the end point crossing controller is attached only to the end point side of the crossing 8, the illustration and repeated complicated explanations are omitted, but in this case as well, the same inconvenience may be caused simply by switching up and down. .
And, in order to avoid such inconvenience, even under the ideal safety-oriented environment where it is allowed to ignore the cost burden, it can be applied to single line sections without hesitation even with a crossing safety device for double tracks, When installing a railroad crossing safety device at the railroad crossing 8 of the track 10 in the single track section, a start-point crossing controller and a stop-point crossing controller may be attached to both sides across the railroad crossing.

  That is, (see FIG. 8 (b)), for the rails 11 and 12 on the starting point side of the railroad crossing 8, the starting point railroad crossing controller 21 is connected to the downhill starting point ADC by a connecting line, and the uphill stop nearby. An end point crossing controller 24 is connected to the connection line attachment point 14 of the point DDC via a connection line, and the connection line attachment of the nearby down end point BDC is attached to the rails 11 and 12 on the end point side of the crossing 8. The end point crossing controller 22 is connected to the location 15 via a connecting line, and the starting point crossing controller 23 is connected to the distant starting point CDC by a connecting line. As a result, not only the level crossing 8 belongs to the up crossing control section from the up start point CDC to the up end point DDC, but also the down crossing control section extends to a section from the down start point ADC to the down end point BDC. Since the level crossing 8 also belongs to the down crossing control section, the train is completely crossed regardless of the train speed regardless of the train speed, whether it is an up train or a down train. The intended purpose is achieved by detecting that the road has been passed.

However, in such a cost-ignoring countermeasure, it is necessary to install two open-circuit-type end-point crossing controllers, and both the initial cost and the running cost of the end-point crossing controller are doubled. Since the single track section is poor in operating revenue, costs must be kept down. In addition, since multiple and many level crossing controllers are installed in the close range, mutual interference is likely to occur with respect to the oscillation signal for verification sent to the same line. Therefore, it is necessary to change the frequency of the check signal, ie, the oscillation signal for verification. Increasing the frequency further while using many signal frequencies has the disadvantage of increasing cross modulation.
Therefore, it is a technical problem to improve so that a train can be detected at the end points on both sides of the crossing even if there is only one end point crossing controller.

  The end crossing controller for the end point of the present invention (Solution 1) was created to solve such a problem. In short, an up train and a down train pass through one crossing at the same time in a single track section. Based on the fact that there is no such thing, it is possible to detect trains at the end points on both sides of the crossing easily and inexpensively by having one end point crossing controller perform the functions of two cars in a time-sharing manner. It has become.

  Specifically, a first connection terminal for externally connecting to the line via a first connection line on either side of a railroad crossing provided on a track in a single track section of the railway, and the first connection terminal An oscillation presence / absence detecting unit that attempts to send a check oscillation signal through a control internal wire connected to the detection circuit and detects a check of a round transfer of the check oscillation signal; In an open circuit type crossing controller for an end point having a relay driving unit that selectively excites an output relay according to the presence or absence of the second crossing, a second connection line is connected to the line on either side of the crossing. A second connection terminal for external connection via a train and a train operation direction instruction sent from train direction determination means for determining whether the train has traveled on the track and has approached the railroad crossing. A third connection terminal for externally connecting the connection line; A branch line that branches off from the internal wiring of the control element and is connected to the internal wiring of the control element by interposing the branch wiring connected to the second connection terminal. In the first switching state, the transmission destination of the oscillation signal for verification is selected. Switching to the first connection terminal, but in the second switching state, the switching circuit unit that switches the sending destination of the oscillation signal for verification to the second connection terminal, and the switching circuit unit according to the train operation direction instruction, A switching control unit is provided, which switches one of the switching state and the second switching state.

  Further, the end point crossing controller of the present invention (solving means 2) is the end point crossing controller of the above solution means 1, and is disposed in the oscillation presence / absence detecting unit or the wiring in the controller. A first adjustment unit that adjusts and adjusts the level of the oscillation signal for verification transmitted through the wiring in the controller; and the oscillation signal for verification that is disposed in the branch wiring and transmitted through the branch wiring. And a second adjustment unit for adjusting the level.

  Further, the end point crossing controller according to the present invention is (the solution means 3), which is the end point crossing controller of the solution means 2, and the level of the oscillation signal for verification output from the oscillation presence / absence detecting unit is determined. Regardless of the level detection circuit to detect and the train operation direction instruction, the switching circuit unit is allowed to take the first switching state, and then the detection value of the level detection circuit is acquired and used as the adjusted level value. Adjustment control for operating the second adjustment unit so that the detection value of the level detection circuit coincides with the adjusted level value after storing and holding the switching circuit unit in the second switching state. Means.

Further, the end point crossing controller of the present invention (solving means 4) is the end point crossing controller of the above solution means 2, and the switching circuit section is connected to the switching point regardless of the train operation direction instruction. After the switching state is taken, the first adjusting unit is operated to monitor the excitation state of the relay driving unit while gradually increasing or decreasing the level of the oscillation signal for verification. An adjustment control means for stopping the operation of the first adjustment unit is provided.
And this railroad crossing controller for the end point is adjusted (initial claim 8) in that the line is trained at the end of the train detection length to which the connection part of the first connection line and the second connection line belongs. After the actual short-circuited state of the axle is actually or simulated, the adjustment control means is operated to pass the oscillation signal for verification via the first connection line and the second connection line. The level is matched with the oscillation signal for checking.

Further, the end point crossing controller of the present invention (solution means 5) is the end point crossing controller of the solution means 2, and the switching circuit section includes the second control point regardless of the train operation direction instruction. After the two switching states are taken, the second adjustment unit is operated to monitor the excitation state of the relay driving unit while gradually increasing or decreasing the level of the oscillation signal for verification. An adjustment control means for stopping the operation of the second adjustment unit is provided.
And this railroad crossing controller for the end point is adjusted (initial claim 8) in that the line is trained at the end of the train detection length to which the connection part of the first connection line and the second connection line belongs. After the actual short-circuited state of the axle is actually or simulated, the adjustment control means is operated to pass the oscillation signal for verification via the first connection line and the second connection line. The level is matched with the oscillation signal for checking.

Further, the end point crossing controller of the present invention is (the solution means 6), which is the end point crossing controller of the above solution means 4 and 5, and the check oscillation signal output from the oscillation presence / absence detecting unit. A level detection circuit for detecting a level, and when the adjustment control unit has finished adjustment based on a change in the excitation state of the relay drive unit for one of the first adjustment unit and the second adjustment unit, the level The detection value of the detection circuit is acquired and stored as an adjusted level value, and then the first switching state and the second switching state are stored in the switching circuit unit regardless of the train operation direction instruction. Among them, the detection value of the level detection circuit matches the adjusted level value after taking a switching state different from the switching state at the time of adjustment based on the change of the excitation state of the relay drive unit. It characterized that it is first adjusting section and actuate the other one of the second adjustment unit.
This means includes the following two aspects.

  That is, one of the two modes included in the solving means 6 is the end point crossing controller of the solving means 4, which is a level for detecting the level of the oscillation signal for verification output from the oscillation presence / absence detecting unit. A detection circuit, wherein the adjustment control means acquires the detection value of the level detection circuit after the adjustment of the first adjustment unit based on the change in the excitation state of the relay drive unit, and uses it as the adjusted level value The stored value is stored, and the detection value of the level detection circuit is made to coincide with the adjusted level value after the second switching state is taken by the switching circuit unit regardless of the train operation direction instruction. The second adjusting portion is operated.

  Further, the other of the two modes included in the solving means 6 is the end point crossing controller of the solving means 5 that detects the level of the oscillation signal for verification output from the oscillation presence / absence detecting unit. A detection circuit, and the adjustment control means acquires the detection value of the level detection circuit after the adjustment of the second adjustment unit based on the change in the excitation state of the relay drive unit, and uses it as the adjusted level value The stored value is stored, and the detection value of the level detection circuit is made to coincide with the adjusted level value after the first switching state is taken by the switching circuit unit regardless of the train operation direction instruction. The first adjusting unit is actuated in the above-described manner.

  Further, the end point crossing controller of the present invention is (the solution means 7), which is the end point crossing controller of the above solution means 3 to 6, wherein the adjustment control means or the adjustment control means and the level detection circuit. However, it is characterized in that it is housed in an adjustment jig separate from the housing containing the oscillation presence / absence detecting unit, the relay driving unit, the switching circuit unit, and the switching control unit.

  In such an end point crossing controller of the present invention (solution 1), a crossing control device for a starting point and a crossing control device are combined to constitute a crossing safety device. Connected as follows. That is, the starting point level crossing controller has a plurality of closed-circuit types separated on both sides of the level crossing and connected to the track. The end point crossing controller according to the present invention may be configured such that the first connection terminal is connected to the track between the one of the start point crossing controllers and the crossing via the first connection line. The second connection terminal is connected to the track via the second connection line between the other of the starting point crossing controllers and the crossing, and connected to the crossing control device. The third connection terminal is connected to the built-in or separate train direction determining means via the third connection line. Further, the railroad crossing control device generates a plurality of the start points in order to issue a railroad crossing warning based on the train detection result by the start point crossing controller and the train detection result by the end point crossing controller of the present invention. Each of the relay outputs is connected to the railroad crossing controller and the end point crossing controller of the present invention.

In this way, instead of adding a second end point crossing controller and connecting it to the track or the like, instead of the conventional end point crossing controller, the end point crossing controller of the present invention is introduced, By connecting to both sides of the railroad crossing with the first and second connection terminals, the transmission destination of the oscillation signal for verification can be switched to either of the connection destinations in the switching circuit unit. In addition, by switching the signal transmission destination according to the train going up and down, it is a simple improvement, but one end crossing controller has the function of two cars in time division. The train will be detected at the end points on both sides of the railroad crossing. Therefore, the level crossing belongs to not only the level crossing control section but also the level crossing control section, and the train completely passes the level crossing regardless of the train speed, whether it is an up train or a down train. It can be detected that it has finished, and the intended purpose is achieved.
Therefore, according to the present invention, a railroad crossing safety device capable of detecting a train at the stop points on both sides of a crossing can be realized at low cost even if there is only one stop crossing controller for the stop point.

In addition, in the crossing controller for the end point according to the present invention (Solution 2), in addition to the conventionally provided oscillation presence / absence detecting unit and the first adjusting unit related to the wiring in the controller, or in the controller In addition to providing a new first adjustment unit for the wiring, a second adjustment unit for the new branch wiring is also provided, so that the level adjustment of the oscillation signal for verification related to the internal wiring of the controller and the branch wiring The level adjustment of the oscillation signal for verification according to can be performed separately.
Therefore, even when the first connection line and the second connection line have different lengths, and the impedance, particularly the inductance, varies depending on the switching state of the switching circuit unit, the first and second adjustment units are By operating each of them, the oscillation state of the oscillation signal for verification can be easily adjusted for each switching state.

Thereby, in any switching state, the train detection condition can be accurately matched with the standard value of the end point crossing controller.
In addition, the selection of the switching state of the switching circuit unit, which is a precondition for the operation of the first and second adjustment units, is determined by the train operating direction via the third connection terminal provided in advance in the casing of the end point crossing controller. This can be done simply by giving a simulated signal of instructions.
Therefore, according to the present invention, a train can be detected at the stop points on both sides of the railroad crossing even if there is only one railroad crossing controller for the stop point, and the adjustment can be easily performed.

Further, in the crossing controller for the end point according to the present invention (solution 3), during the adjustment, the oscillation presence / absence detecting unit and the first adjusting unit related to the wiring in the controller are operated, for example, by a manual method of the conventional way. Then, when the level adjustment of the oscillation signal for verification related to the wiring in the controller is completed, the level of the oscillation signal for verification that has become an appropriate state is detected by the level detection circuit. When the adjustment control means is operated, the detected value of the appropriate signal level is stored and held as the adjusted level value, and then the state of the switching circuit unit is switched from the first switching state to the second switching state, and the second The adjustment unit operates and the detection value of the level detection circuit matches the adjusted level value. As a result, the second adjustment unit is automatically adjusted so that the level of the oscillation signal for verification related to the branch wiring becomes the same as the level of the oscillation signal for verification related to the wiring inside the controller.
Therefore, according to the present invention, the train can be detected at the stop points on both sides of the railroad crossing even if there is only one railroad crossing controller for the stop point, and the adjustment becomes easier.

Further, in the crossing controller for the end point and the adjusting method thereof according to the present invention (solution means 4 and 5), the state where the track is short-circuited at the train axle at the end of the train detection length is actually or simulated. In this case, the state of the switching circuit unit is switched to the adjustment target side, and the adjustment target adjustment unit operates to gradually increase or decrease the level of the oscillation signal for verification monotonously. When the excitation state of the relay drive unit changes during the monotonous change, the adjustment unit to be adjusted stops operating at that time. Thereby, the adjustment of the adjustment unit to be adjusted is automatically performed.
Therefore, according to the present invention, the train can be detected at the stop points on both sides of the railroad crossing even if there is only one railroad crossing controller for the stop point, and the adjustment becomes easier.

  In the crossing point controller for the end point according to the present invention (solving means 6), either one of the first and second adjusting units can be automatically adjusted according to the solving means 4 and 5. Since any one of the first and second adjustment units can be automatically adjusted according to the solving means 3, the adjustment is further simplified.

  Further, in the end point crossing controller of the present invention (solution 7), the adjustment control means and the like that only need to be operated at the time of adjustment are separated from the housing incorporating the oscillation presence / absence detecting unit that is always operated, Since it is housed in a separate adjustment jig, it can be shared with other end point crossing controllers, so even if an automatic adjustment function is introduced, an increase in cost can be avoided.

1 shows the structure of a railroad crossing controller with a connection line switching function and a railroad crossing safety device incorporating the same, (a) is a schematic configuration diagram of the railroad crossing safety device, and (b) is a roadblock. It is a circuit diagram of a railroad crossing controller. (A) is a schematic diagram showing the adjustment status of the crossing controller for the end point, (b) is a schematic diagram showing the operation state of the crossing safety device and the crossing controller for the end point when the up train arrives, It is the schematic which shows the operation state of a level crossing safety device at the time of a train arrival, and a crossing controller for an end point. In the second embodiment of the present invention, (a) is a circuit diagram of the end point crossing controller, and (b) is an adjustment state diagram of the end point crossing controller. In Embodiment 3 of the present invention, (a) is a circuit diagram of the end point crossing controller, and (b) is an adjustment state diagram of the end point crossing controller. In Embodiment 4 of the present invention, (a) is a circuit diagram of the end point crossing controller, and (b) is an adjustment situation diagram of the end point crossing controller. A conventional level crossing safety device is shown, (a) is a layout diagram of a level crossing controller in a double track section, (b) is a layout diagram of a level crossing controller in a single track section, (c) is a block diagram of a level crossing safety device for a single line, (D) is a connection diagram of a start-point level crossing controller of a closed circuit type, and (e) is a connection diagram of an open-circuit type level crossing controller for an end point. FIG. 2 shows a current end-point crossing controller, where (a) is a block diagram of an oscillation type, and (b) is a block diagram of a transmission / reception type H-shape. (A) is a general | schematic block diagram of the conventional level crossing safety apparatus for single wires, (b) is a schematic block diagram of the ideal single line level crossing safety apparatus.

With regard to the end point crossing controller of the present invention as described above, specific modes for carrying out this will be described with reference to the following first to third embodiments.
The embodiment 1 shown in FIGS. 1 and 2 embodies the above-described solving means 1 and 2 (claims 1 and 2 as originally filed), and the embodiment 2 shown in FIG. Means 3 (Claim 3 at the beginning of the application) is embodied, and the third embodiment shown in FIG. 4 is the same as the above-mentioned solving means 4, 5, and 7 (Claims 4, 5, and 7 at the time of filing). The fourth embodiment shown in FIG. 5 embodies the above-described solving means 6 and 7 (claims 6 and 7 at the beginning of the application).

In the illustration, for the sake of simplicity, mechanical members such as housings and screws, circuit elements of electric circuits and electronic circuits, etc. are omitted in detail and are necessary for explaining the invention. And related items are shown with symbols.
In addition, the same reference numerals are given to the same constituent elements as those in the past in the illustration, but what has been described in the background art section is the same in the following embodiments, and therefore, the same repetitive elements are repeated. The description will be omitted, and the description below will focus on differences from the prior art.

  A specific configuration of the end point crossing controller according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 1A is a schematic configuration diagram of a railroad crossing safety device 40 incorporating an end point crossing controller 50 with a connection line switching function, and FIG. 1B is a circuit diagram of the end point crossing controller 50.

  The railroad crossing safety device 40 is provided to issue a railroad crossing alarm related to the railroad crossing 8 provided on the track 10 in the single track section of the railway. A closed-circuit type start-point crossing controller 21 connected to the line 10 and an up-starting point CDC on the end point side of the crossing 8 at a closed-circuit type connected to the line 10 via the connection line. The starting point crossing controller 23 and the starting point crossing controller 21 are connected to the connecting line attachment point 14 of the line 10 at the rising end point DDC set between the starting point ADC and the crossing point 8. At the down end point BDC set between the first connecting lines A1 and B1 connected at one end by welding and the up start point CDC to which the start point crossing controller 23 is connected and the crossing 8 A second connection in which one end is connected to the connection line attachment point 15 of the track 10 by welding. And a A2, B2.

  Further, the railroad crossing safety device 40 includes an open-circuit-type end-point crossing controller 50 that detects a train related to the connection line attachment point of the line 10 when connected to the line 10 via a connection line, and a start-point level crossing. The output of the start R relay showing the train detection result at the controller 21, the output of the start R relay showing the train detection result at the start point crossing controller 23, and the train detection result at the end point crossing controller 50 are shown. The output of the stop R relay is input and the railroad crossing warning control is performed based on the output to determine the train operation direction, and the uplink SR is output by the uplink SR relay or the downlink SR is output by the downlink SR relay according to the train operation direction. And a speaker that responds to the output of the alarm R relay, which is the result of combining them, a warning light 32, a railroad crossing breaker 33, and a power supply device (not shown).

  Such a level crossing safety device 40 is a new level crossing safety device (see FIG. 8A) in the current single line section described above, and is replaced with the above-described end point crossing controller 24 (see FIG. 7). After introducing the end point crossing controller 50 (see FIG. 1 (a)), the crossing device box described above is used as a connection for sending an oscillation signal for verification from the end point crossing controller 50 to the track 10. While maintaining the connection from the end point crossing controller 50 by the inner wiring 27 and the first connection lines A1 and B1 to the connection line attachment point 14 of the ascending end point DDC of the line 10, a new rail crossing device box wiring 42 is provided. And the second connection lines A2 and B2 to which a connection from the end point crossing controller 50 to the connection line attachment point 15 of the descending end point BDC of the line 10 is added (see FIG. 1B). . Further, a railroad crossing equipment box wiring 43 for taking in the alarm R and the descending SR from the railroad crossing control device 31 is also added. Of these, the second connection lines A2 and B2, the end point crossing controller 50, and the rails 42 and 43 in the crossing equipment box have not been described yet, but the other points have already been described in detail, so Then, what is not explained is explained in full detail.

  The second connection lines A2 and B2 may be basically insulated wires similar to the existing first connection lines A1 and B1, but the second connection lines A2 and B2 are terminated in the railroad crossing equipment box in which the endpoint crossing controller 24 is accommodated. If the point crossing controller 50 is to be stored, it tends to be longer than the first connection lines A1 and B1, and for example, if the first connection lines A1 and B1 are less than 15 m, which is preferable, the necessary train detection In order to ensure the length, the second connection lines A2 and B2 are about 70 to 100 m, and the inductance of the second connection lines A2 and B2 increases. Therefore, a capacitor is provided on the second connection lines A2 and B2. It is desirable that the impedance characteristics of the first connection lines A1 and B1 and the second connection lines A2 and B2 be as close as possible by interposing and connecting in series to cancel the influence of the increased inductance.

  Specifically, as will be described in detail later, the capacitor is not directly connected to the second connection lines A2 and B2 exposed to a severe external environment, but the end point crossing control in the crossing device box. A variable capacity portion 57 (second adjusting portion) is provided in the housing of the child 50 (see FIG. 1B). In the configuration in which the level of the oscillation signal for verification is adjusted only by the adjuster 25a (first adjustment unit) for the first connection lines A1 and B1 and the second connection lines A2 and B2 whose lengths are extremely different, The output to the line needs to be increased by an order of magnitude, which is not realistic. For example, if the first connection lines A1 and B1 are 15 m or less, which is preferable, but the second connection lines A2 and B2 are about 100 m in order to secure the necessary train detection length, verification is performed. The level of the oscillation signal for the first connection line is about 10 W while the second connection line is about 100 W.

  The end point crossing controller 50 (see FIG. 1B) is grouped as one unit in a housing made of, for example, a metal box, and the first connection terminal 51 and the first through which penetrate the inside and outside of the housing. 2 switching terminal 52, 3rd connecting terminal 53, connecting terminal 58, oscillation presence / absence detecting unit 25, relay driving unit 26, controller internal wirings AA and BB, branch wirings aa and bb built in the casing A control unit 55, a switching circuit unit 56, and a variable capacitance unit 57 are provided. Among them, as for the oscillation presence / absence detecting unit 25, the relay driving unit 26, and the control-internal wires AA and BB, those of the end point crossing controller 24 described above are taken over as they are.

  An adjustment unit 25a (first adjustment unit) is provided in the oscillation presence / absence detection unit 25. The controller internal wirings AA and BB for transmitting the oscillation signal for verification are connected to the oscillation presence / absence detection unit 25 at one end. Is connected to the first connection terminal 51, the contact of the termination R relay of the relay drive unit 26 is connected to the connection terminal 58 and the rail in the crossing equipment box from the connection terminal 58. The connection to the input unit 31 is also carried over from the end point crossing controller 24 to the end point crossing controller 50 as it is.

The first connection terminal 51 is a connection terminal for externally connecting to the line 10 via the first connection lines A1 and B1 at the up end point DDC set between the railroad crossing 8 and the down start point ADC. Specifically, the other ends of the first connection lines A1 and B1 are connected via the rail 27 in the railroad crossing box and the terminals of the wiring terminal board 28.
The second connection terminal 52 is a connection terminal for externally connecting to the line 10 via the second connection lines A2 and B2 at the down end point BDC set between the railroad crossing 8 and the up start point CDC. Specifically, the other ends of the second connection lines A2 and B2 are connected not via the rail 27 in the railroad crossing box but via the other rails 42 in the railroad crossing box and other terminals of the wiring terminal board 28. ing.

The third connection terminal 53 is a connection terminal for externally connecting a third connection line for transmitting a train operation direction instruction. The third connection terminal 53 is a train that travels on the track 10 and determines whether the train that has approached the railroad crossing 8 is going up or down. In order to use the aforementioned level crossing control device 31 as direction discriminating means and to use the alarm R and the down SR output from the level crossing control device 31 as a train operation direction instruction, the alarm R relay and the down SR relay of the level crossing control device 31 A crossing instrument box wiring 43 consisting of a branch line of the output line or a spare output line is connected as the third connection line.
These connection terminals 51 to 53 are maintained with a stable connection state for a long time after the connection is established, for example, by screwing or a pin jack with a lock.

  The switching control unit 55 is embodied by, for example, a relay circuit mainly composed of a down end R relay, and is configured with the above described down SR relay and alarm R relay contacts input from the level crossing control device 31. And the down end R relay of the main part of the switching control part 55 is when the up train and the down train are not in the respective level crossing warning sections, and when the up train is in the up level crossing warning section. In the non-excited (falling) state, when the down train enters the down crossing warning section, the non-excited (falling) contact of the down SR relay and the alarm R relay from the level crossing control device 31 constitutes the excitation ( Operation) state. When the down train enters the down railroad crossing control section, the alarm R is in an excited (operating) state, whereby the circuit is disconnected and the down end R relay is in an unexcited (falling) state.

  Although details are omitted, the timing at which the descending SR relay is excited (operated) differs between the case where the level crossing control device 31 is an electronic level crossing control device and the case where the level crossing control logic is configured by relay logic. In this case, a circuit using the down end R relay is not essential, and the output of the down SR relay is input immediately or, if necessary, signal waveform shaping or the like is performed for the control of the switching circuit unit 56. Thus, the function of the switching control unit 55 is realized, but in order to be able to cope with both the case of the electronic level crossing control device and the case where the level crossing control logic is configured by relay logic, here, the down end R relay is set. The circuit used was provided as a standard. As described above, the down SR relay is a relay that is output from the level crossing control device 31 in a non-excited (falling) state when the train operation direction is down, and the down end R relay is a switching circuit unit 56 as described below. Therefore, the switching control unit 55 causes the switching circuit unit 56 to switch one of the first switching state and the second switching state according to the train operation direction instruction of the railroad crossing control device 31. Is an alternative.

  The switching circuit unit 56 is also embodied as a relay circuit, similar to the switching control unit 55, and the above-described controller internal wirings AA and BB for connecting the oscillation presence / absence detecting unit 25 and the first connection terminal 51; Branch wirings aa and bb branched from the control-internal wirings AA and BB and connected to the second connection terminal 52, and the first connection terminal 51 from the branch point of the branch wirings aa and bb in the control-internal wirings AA and BB. Non-excited (falling) contact of a down-end R relay connected in series via a portion of the wiring close to the wire and excitation (operation) of a down-end R relay connected in series via branch wires aa and bb It has a contact point and a variable capacitance part 57 (second adjustment part) connected in series with the latter branch wirings aa and bb. In this example, the variable capacitor 57 is connected only to the branch line aa.

  If the variable capacitance unit 57 (second adjustment unit) can offset the influence of the increase in inductance due to the length of the second connection lines A2 and B2 to which the branch lines aa and bb are connected, A variable capacitor or a combination of multiple capacitors may be used, but in order to minimize the change in impedance when a capacitor opens, it is necessary to configure a circuit by connecting multiple capacitors in parallel. , Leading to maintenance and improvement of operability. Further, in the case of parallel connection, for example, a fixed capacitor and a variable capacitor may be connected to secure a large capacity, stabilize the capacitance value, and appropriately limit the variable range.

  Then, such a switching circuit unit 56 connects the output terminal of the oscillation signal for verification of the oscillation presence / absence detecting unit 25 and the first connection terminal 51 in the first switching state in which the down end R relay is not excited. The oscillation signal for verification is sent to the connection line attachment point 14 of the first connection lines A1 and B1 and the upstream end point DDC, and the output terminal and the second connection terminal of the oscillation signal for verification of the oscillation presence / absence detection unit 25 52 is cut off, so that the oscillation signal for verification is not sent to the connection line attachment point 15 of the second connection lines A2 and B2 and the descending end point BDC.

  Further, in the second switching state in which the downstream end R relay is excited, the switching circuit unit 56 disconnects the output terminal of the oscillation signal for verification of the oscillation presence / absence detection unit 25 and the first connection terminal 51, and thereafter While the oscillation signal for verification is not sent to the first connection lines A1 and B1 and the connection line attachment point 14 of the rising end point DDC, the output terminal of the oscillation signal for verification and the second connection terminal 52 of the oscillation presence / absence detection unit 25 Are connected, and the oscillation signal for verification is sent out to the connection line attachment point 15 of the second connection lines A2 and B2 and the descending end point BDC.

  Therefore, the crossing control for the end point connected to the line 10 at the up end point DDC via the first connection line A1, B1 and connected to the line 10 at the down end point BDC via the second connection line A2, B2. Depending on the switching state of the switching circuit unit 56 according to the train operation direction instruction, the child 50 is alternatively selected from either the first connection line A1, B1 or the second connection line A2, B2. As the connection is established, an oscillation signal for verification is sent to the line 10 at any one of the connection line attachment point 14 of the upstream end point DDC and the connection line attachment point 15 of the downward end point BDC. It is like that. The end point crossing controller 50 having such a connection line switching function does not detect the train at the descending end point BDC in the first switching state when the ascending train arrives, and detects the train at the ascending end point DDC. In the second switching state when the down train arrives, train detection is performed at the down end point BDC without performing train detection at the up end point DDC.

The installation procedure of the crossing safety device 40 incorporating the end point crossing controller 50 of the first embodiment will be described with reference to the drawings. 1A shows a wiring connection state of the crossing safety device 40, and FIG. 1B shows a wiring connection state of the end point crossing controller 50. FIG.
When newly installing or updating not only the end crossing controller 50 but also the level crossing safety device 40 including the end point crossing controller 50, as described above for the configuration, each device is installed and connected between the devices. Each device is also connected to the track 10.

  In contrast, the existing level crossing safety device (see FIG. 8 (a)) is replaced by a partial update by replacing the end point crossing controller 24 (see FIG. 7) with the end point crossing controller 50 (see FIG. 1). When the security device 40 (see FIG. 1A) is realized, the other end of the rail 27 in the railroad crossing equipment box having one end connected to the line 10 at the rising end DDC is connected to the end crossing controller 24 for the end point. To the first connection terminal 51 of the end point crossing controller 50 and to connect the other end of the end R signal output line whose one end is connected to the crossing control device 31 to the end point crossing controller 24. To the connection terminal 58 of the end point crossing controller 50. Thereby, first, the end point crossing controller 50 can perform the role of the end point crossing controller 24.

  Moreover, the end part of 2nd connection line A2, B2 is connected by welding with respect to the track | line 10 in which the level crossing security apparatus is already installed (refer Fig.1 (a)). The connection line attachment point 15 of the second connection lines A2 and B2 on the track 10 is between the upstream starting point CDC to which the starting point crossing controller 23 is connected and the level crossing 8, and is supposed to be the end point crossing controller. If 22 is installed, it is the setting point of the downlink end point BDC as the connection destination (see FIG. 8B). The other ends of the second connection lines A2 and B2 are connected to an empty terminal of the wiring terminal board 28 of the railroad crossing equipment box (see FIG. 1B), and the terminal and the connection terminal 52 of the railroad crossing control switching device 50 are connected. Are connected by the wiring 42 in the crossing device box.

As a result, the end point crossing controller 50 is connected to the line 10 at the descending end point BDC via the second connection lines A2 and B2, so that the end point crossing controller 50 becomes the end point crossing controller. Can play up to 22 roles.
Furthermore, since the roles of both controllers 22 and 24 cannot be performed simultaneously, the alarm R relay and the descending SR relay (downward train operation direction instruction) of the level crossing control device 31 are performed in order to fulfill both roles in an appropriate time division. Is connected to the third connection terminal 53. Now that the connection is complete, the railroad crossing control switching device 50 is stored in the railroad crossing equipment box.

  Note that the connection work of the second connection lines A2 and B2 and the connection work of the rails in the railroad crossing equipment box 42 do not hinder the operation of the railroad crossing safety device. It is also possible to sew. It may be performed in parallel or in reverse order. On the other hand, the operation of removing the crossing controller 24 for the end point and the operation of reconnecting the wiring connected thereto to the crossing controller 50 for the end point affect the operation of the crossing safety device. Confirm after stopping the operation. In addition, the wiring connection changing work from the end point crossing controller 24 to the end point crossing controller 50 and the wiring connection addition work of the second connection lines A2 and B2 and the crossing device box wiring 42 are simultaneously performed in parallel. May be performed in reverse order. Further, the connection of the railroad crossing equipment box wiring 43 to the connection terminal 53 may be delayed until after the adjustment described later.

The use aspect and operation | movement about the level crossing controller 50 for end points of this Example 1 and the level crossing security apparatus 40 incorporating the same are demonstrated referring drawings.
FIG. 2A is a schematic diagram showing an adjustment state of the end point crossing controller 50 incorporated in the crossing safety device 40, and FIG. 2B is a crossing safety device 40 and the end point crossing controller when the up train arrives. The schematic diagram which shows the operation state of 50, (c) is the schematic diagram which shows the operation state of the level crossing safety device 40 at the time of arrival of the down train and the end point crossing controller 50.

  Prior to the full-scale operation, it is necessary to adjust the train detection length. However, since it is a conventional device other than the end point crossing controller 50, it may be performed as usual. For the end point crossing controller 50 (see FIG. 2A), a simulator is temporarily connected to the connection terminal 53 for the crossing control device 31 among the connection terminals 51 to 53 of the housing of the end point crossing controller 50. Then, by operating this simulator, a train operation direction instruction simulation signal is given to the switching control unit 55 of the end point crossing controller 50 via the connection terminal 53. The simulation device may be a simple adjustment jig including a relay that outputs a simulation signal for alarm R, a relay that outputs a simulation signal for down SR, and a manual switch that switches the excitation state of these relays. Then, the operation state of the train detection by the end point crossing controller 50 is adjusted while selecting the switching state of the switching circuit unit 56.

  Specifically, the first switching state is first selected and the oscillation presence / absence detecting unit 25 is connected to the connection lines A1 and B1 via the controller internal wires AA and BB, and this state is maintained. The rails 11 and 12 are short-circuited by the axle simulation member at the connecting line attachment point 14 to temporarily close the open circuit, or the axle simulation member is removed to return the open circuit to the open state. At point DDC, check that the train detection length is about 30m. The train detection length at the ascending end point DDC to which the first connection lines A1 and B1 are already connected hardly changes even if the end point crossing controller 50 is introduced. 25, the same operation as the adjustment of the existing equipment is performed using the adjuster 25a built in 25, and the amplitude level of the oscillation signal for verification is adjusted to adjust the train detection length at the upstream end point DDC.

  Next, the simulation device is operated again to select the second switching state, and the oscillation presence / absence detection unit 25 is connected to the second connection lines A2 and B2 via the controller internal wirings AA and BB and the branch wirings aa and bb, While maintaining this state, the rails 11 and 12 are short-circuited by the axle simulation member at the connecting line attachment point 15 of the track 10 to temporarily close the open circuit, or the axle simulation member is removed to open the circuit. By changing the capacity by operating the variable capacity unit 57 while returning to the open state, the amplitude level of the oscillation signal for verification is adjusted and the train detection length is reduced to the required about 30 m at the descending end point BDC. To be. After the adjustment, the simulator is removed from the end point crossing controller 50, and thereafter (see FIG. 1), the outputs of the alarm R relay and the descending SR relay of the crossing control device 31 are connected to the rail crossing device box wiring 43. The end point crossing controller 50 is connected to the connection terminal 53.

  The train operation starts after the end point crossing controller 50 and the crossing safety device 40 have been adjusted, and the ascending train travels from the end point toward the crossing 8 on the track 10 where the crossing safety device 40 is installed. When entering the train detection length section of the starting point CDC (see FIG. 2B), the starting point crossing controller 23 detects an upward train, and the starting R relay of the starting point crossing controller 23 is de-energized. become. Since the track 10 is a single line, the down train does not come at the same time as the up train. Therefore, at this time, neither the start point crossing controller 21 nor the end point crossing controller 50 detects the train, and the start point crossing controller 21 The start R relay maintains the excited state, and the end R relay of the end point crossing controller 50 maintains the non-excited state.

  In the railroad crossing control device 31, it is determined whether the upstream train has arrived based on those relay states, and the upstream SR relay and the alarm R relay are de-energized accordingly. On the other hand, the down SR relay maintains the excited state. In this state, since the switching control unit 55 and the switching circuit unit 56 of the end point crossing controller 50 remain in the first switching state, the oscillation presence / absence detecting unit 25 of the end point crossing controller 50 is connected to the controller internal wiring AA. , BB and the first connection lines A1, B1 are connected to the connection line attachment point 14. Since this state is maintained, the ascending level crossing control section occupies from the ascending start point CDC to the ascending end point DDC, and the level crossing 8 is included in the section.

  Further, (see FIG. 2 (c)), when the descending train travels from the starting side toward the level crossing 8 on the track 10 where the railroad crossing safety device 40 is installed, and enters the train detection length section of the descending starting point ADC. The starting point crossing controller 21 detects the descending train, and the starting R relay of the starting point crossing controller 21 is de-energized. Since the track 10 is a single line, the up train does not come at the same time as the down train. At this time, neither the start point crossing controller 23 nor the end point crossing controller 50 detects the train, and the start point crossing controller 23 The start R relay maintains the excited state, and the end R relay of the end point crossing controller 50 maintains the non-excited state. The railroad crossing control device 31 determines whether or not the down train has arrived based on those relay states, and the down SR relay and the alarm R relay are de-energized accordingly.

  Then, in response to this, the switching control unit 55 and the switching circuit unit 56 of the end point crossing controller 50 are switched to the second switching state. It is disconnected from the connection line attachment point 14 of the DDC and connected to the connection line attachment point 15 via a part of the control-internal wires AA and BB, the branch wires aa and bb, and the second connection lines A2 and B2. The connecting line attachment point 15 is located at the down end point BDC of the line 10, and the end point crossing controller 50 until the crossing control device 31 excites the alarm R relay after the down train has passed there. In order to maintain the second switching state, the descending level crossing control section occupies from the descending start point ADC to the descending end point BDC, and the level crossing 8 is also contained in the section.

  Thus, in the crossing safety device 40 incorporating the end point crossing controller 50, since the crossing 8 belongs to not only the up crossing control section but also the down crossing control section, the ideal state described above ( As in Fig. 8 (b), it can be detected that the train has completely passed the railroad crossing regardless of the train speed, whether it is an ascending train or a descending train. Achieved. Moreover, in the above-described ideal configuration (see FIG. 8B), the two level crossing controllers 22 and 24 are installed for the end point, whereas the level crossing safety device 40 adopting the end point crossing controller 50 is used. Then, only one end crossing controller 50 may be installed. The new switching control unit 55 and switching circuit unit 56 are simpler and less expensive than either of the end point crossing controllers 22 and 24.

  A specific configuration of the end point crossing controller according to the second embodiment of the present invention will be described with reference to the drawings. 3A is a circuit diagram of the end point crossing controller 60, and FIG. 3B is a diagram illustrating an adjustment state of the end point crossing controller 60. FIG.

The end point crossing controller 60 is different from the end point crossing controller 50 of the first embodiment described above in that the connection line attachment points 15 of the second connection lines A2 and B2 (down end set in the line 10). The point 61-66 which automates the adjustment in the variable capacity | capacitance part 57 (2nd adjustment part) which concerns on the train detection length of the point BDC) is added.
That is, a small hole 61 for inserting an operation pin is formed through the casing, and a switch 62 is disposed immediately inside the housing to reach the operation pin. When the switch 62 is operated, an automatic adjustment circuit that performs automatic adjustment 63 to 65, and a capacity operation unit 66 that is composed of a small motor, a reduction gear, and the like and operates the variable capacity unit 57 to increase or decrease its capacity are incorporated.

The automatic adjustment circuits 63 to 65 include a level detection circuit 63, a selector 64, and a microprocessor 65 (MPU, adjustment control means).
The level detection circuit 63 is composed of, for example, an envelope detection circuit, a low-pass filter, and the like. The level detection circuit 63 inputs the verification oscillation signal output from the oscillation presence / absence detection unit 25 from the controller internal wirings AA and BB, and determines the level of the verification oscillation signal. The level detection value is detected and sent to the microprocessor 65.

  The selector 64 has two inputs and one output, but is provided so as to interrupt the internal wiring of the controller that connects the third connection terminal 53 and the switching control unit 55. Each input terminal, output terminal, In order to transmit the alarm R and the downlink SR, two or more lines belong to each terminal set. One input terminal of the two sets of input terminals is connected to the third connection terminal 53, and the other input terminal of the two sets of input terminals is connected to the output terminal of the microprocessor 65. Is connected to the switching control unit 55, and the control terminal is connected to the output terminal of the microprocessor 65 (MPU, adjustment control means).

  The microprocessor 65 (MPU, adjustment control means) may be inexpensive as long as it can perform logical operations and data storage, so a so-called one-chip microcomputer is easy to use, but it may be a multi-chip, a fail-safe computer, a sequencer or programmable logic. If it can be replaced by an array or the like, it may be so. In order to be able to control the selector 64 and the capacity operation unit 66 by inputting the on / off state of the switch 62 and the level detection value of the level detection circuit 63, each unit 62, 63, 64, 66 and the wiring in the controller are used. It is connected.

  In the normal state in which the switch 62 is not operated, that is, in the standard operation state (see FIG. 3A), the alarm R and the down SR transmitted from the level crossing control device 31 with the selector 64 left in the standard selection state. Is transmitted to the switching control unit 55 through the third connection terminal 53, and the capacitance value of the variable capacitance unit 57 (adjustment of the second adjustment unit) is also maintained while the capacity operation unit 66 is kept in the standard stop state. Control is performed so that the value is maintained at the previous value without changing.

  On the other hand, when the switch 62 is operated for adjusting the train detection length (see FIG. 3B), the microprocessor 65 (adjustment control means) first controls the selector 64 to switch the selection state. By making the simulated signal output from the microprocessor 65, not the alarm R and the down SR via the third connection terminal 53, be input to the switching control unit 55, and then controlling the switching control unit 55 with the simulated signal. Regardless of the alarm R and the descending SR (train operation direction instruction), the switching circuit unit 56 is caused to take the first switching state. As a result, the oscillation signal for verification sent from the oscillation presence / absence detecting unit 25 is transmitted to the connection line attachment point 14 of the line 10 via the controller internal wires AA and BB and the first connection lines A1 and B1. Therefore, when a sufficient time has passed for the state to stabilize, the microprocessor 65 acquires the detection value of the level detection circuit 63 and stores it in the memory as an adjusted level value. ing.

  Then, the microprocessor 65 further controls the switching control unit 55 again with the simulation signal, so that the switching circuit unit 56 is in the second switching state regardless of the alarm R and the descending SR (train operation direction instruction). To take. This time, the oscillation signal for verification sent from the oscillation presence / absence detecting unit 25 is connected to the connection line attachment point of the line 10 via a part of the control-internal wires AA and BB, the branch wires aa and bb, and the branch wires aa and bb. 15, when a sufficient time has elapsed for the state to stabilize, the microprocessor 65 sets the capacity so that the detection value of the level detection circuit 63 matches the adjusted level value of the memory. The operation unit 66 (second adjustment unit) is actuated.

  Specifically, since the capacity of the variable capacity section 57 is small, the operation of the capacity operation section 66 is controlled so that the capacity of the variable capacity section 57 increases, and the capacity of the variable capacity section 57 is large. Among them, the operation of the capacity operation section 66 is controlled so that the capacity of the variable capacity section 57 is reduced, and when the detected value of the level detection circuit 63 matches the adjusted level value of the memory, the capacity operation section 66 is stopped and changed. The capacity of the capacity unit 57 is fixed and the selector 64 is controlled to switch the selected state back to the original standard so that the switching control unit 55 inputs the alarm R and the down SR via the third connection terminal 53. That is, the standard operation state is restored.

  In this case, in a normal state in which the switch 62 is not operated, neither the automatic adjustment circuits 63 to 65 nor the capacity operation unit 66 has any influence on the operation of the other circuits 25, 26, 55, 56. Aside from the adjustment, the end point crossing controller 60 is installed, adjusted, and used in the same manner as the end point crossing controller 50 described above. Only the variable capacitance unit 57 (second adjustment unit) is automatically adjusted by operating the switch 62. The automatic adjustment is performed by changing the adjustment result of the adjuster 25a (first adjustment unit) to the variable capacitance unit 57 (first adjustment unit). For example, the end point crossing controller 50 according to the first embodiment is executed after the adjustment of the adjuster 25a is completed by manual operation as described above.

  As described above, the axle simulation member 16 is used at the time of adjustment. In addition, the axle simulation member 16 shows a resistance value of about 0.5Ω and temporarily shorts the rail 11 and the rail 12. Although there is (see FIG. 3 (b)), when adjusting the adjuster 25a for setting the train detection length of the ascending end point DDC, it is located on both sides of the connection line attachment points 14 of the first connection lines A1 and B1 on the track 10. One axle simulation member 16 is placed at a position to be set at the start side end of both ends of the train detection length. In addition, when adjusting the variable capacity portion 57 that sets the train detection length of the descending end point BDC, both ends of the train detection length located on both sides of the connection line attachment points 15 of the second connection lines A2 and B2 on the track 10 Another axle simulation member 16 is placed where it is desired to set the end point side end.

When the adjustment of the adjuster 25a is completed by the manual operation as described above and the state where the oscillation signal for verification when the switching circuit unit 56 is in the first switching state is at an appropriate level is completed. The subsequent adjustment is different from that described above with respect to the end point crossing controller 50 according to the first embodiment. The only manual adjustment is to insert the operation pin from the small hole 61 and operate the switch 62. Then, the adjustment of the variable capacity unit 57 is automatically performed thereafter.
That is, first, the selection state of the selector 64 is switched, the switching control unit 55 enters the control of the microprocessor 65, and the switching circuit unit 56 enters the first switching state under the control of the microprocessor 65, and the adjustment has been made in that state. After the level of the oscillation signal for verification is detected by the level detection circuit 63, it is temporarily stored in the memory by the microprocessor 65.

  Then, the switching circuit unit 56 enters the second switching state under the control of the microprocessor 65, and the level of the oscillation signal for verification that has not been adjusted in that state is detected by the level detection circuit 63, and the microprocessor 65 Is supplied to the operation of the variable capacity unit 57 by the capacity operation unit 66. As a result, the switching circuit unit 56 is in the second switching state, and the oscillation signal for verification is sent to the connection line attachment point 15 of the line 10 via the branch wirings aa and bb and the second connection lines A2 and B2. However, the state where the oscillation signal for verification becomes an appropriate level is completed. This completes the adjustment of the variable capacitor 57.

Thereafter, the operation of the capacity operation unit 66 is stopped and the capacity of the variable capacity unit 57 is fixed, the selection state of the selector 64 is switched to return to the original standard state, and the switching control unit 55 is connected via the third connection terminal 53. The alarm R and the descending SR are input, and the normal state corresponding to the alarm R is returned.
Thus, in the end point crossing controller 60, the adjustment of the variable capacitor 57 for adjusting the level of the oscillation signal for verification transmitted through the branch lines aa and bb is automatically performed.
Moreover, as long as the adjustment of the adjuster 25a (first adjustment unit) has been completed, the variable capacitance unit 57 can be used without using the simulator and without removing the rail 43 in the railroad crossing equipment box from the third connection terminal 53. The adjustment of (second adjustment unit) can be performed.

  A specific configuration of the end point crossing controller according to the third embodiment of the present invention will be described with reference to the drawings. 4A is a circuit diagram of the end point crossing controller 70, and FIG. 4B is a diagram illustrating a situation where the end point crossing controller 70 is adjusted using the adjustment jig 80.

  The end point crossing controller 70 differs from the end point crossing controller 50 of the first embodiment described above in that the variable capacity portion 71 (first adjusting portion), the engaging portion 74, and the engaging portion 75 are different. It is a point that has been added. Further, the end point crossing controller 70 is different from the end point crossing controller 60 of the second embodiment described above in that means 61 to 66 for automating adjustment at the variable capacity unit 57 (second adjusting unit). The point which is deleted, and the variable capacity part 71 (1st adjustment part), the engaging part 74, and the engaging part 75 are added instead. Furthermore, the part where the engaging portions 74 and 75 are attached on the outer surface of the housing is covered with the lid 76, and the adjustment jig 80 is temporarily attached at the time of adjustment. The end point crossing controller 70 is different from the end point crossing controller 50 and the end point crossing controller 60 in that automatic adjustment is performed under control.

  First, a novel part of the end point crossing controller 70 will be described. The variable capacity unit 71 is built in the housing in the same manner as the variable capacity unit 57 described above, but the insertion destinations are branch wires aa and bb. The control-internal wirings AA and BB are provided, and in particular, the control-internal wirings AA and BB are interposed between the branching points of the branch wirings aa and bb and the first connection terminal 51. In this example, the variable capacitance unit 71 is connected only to the control-internal wiring AA among the control-internal wirings AA and BB. Similarly to the variable capacitor unit 57, the variable capacitor unit 71 may be a single variable capacitor as long as the influence of the increase / decrease in the inductance of the first connection lines A1 and B1 to which the controller wirings AA and BB are connected can be offset. It may be a circuit composed of a plurality of capacitors.

  The variable capacitance unit 71 functions as a first adjustment unit that adjusts and adjusts the level of the oscillation signal for verification transmitted through the controller wirings AA and BB in the same manner as the adjustment unit 25a. Is located upstream of the branch point, not only the level of the oscillation signal for verification transmitted through the wirings AA and BB in the controller, but also the level of the oscillation signal for verification transmitted through the branch wirings aa and bb. Since they are added and subtracted together, they are provided downstream from the branch point where there is no such simultaneous property, and are connected to the controller internal wirings AA and BB, the first connection terminal 51, and the first connection lines A1 and B1. Thus, only the level of the oscillation signal for verification transmitted to the connection line attachment point 14 of the line 10 can be adjusted independently from the level of the oscillation signal for verification of the branch wires aa and bb.

The engaging parts 74 and 75 are detachable passive members such as bosses and hexagon bolts, for example, and are attached to the variable capacity parts 71 and 57 and incorporated in the housing. Only the drive unit is exposed on the outer surface of the housing. When the drive unit is externally driven, for example, by a removable drive member such as a spline shaft or a hexagon wrench, the movement is transferred to the internal variable capacitance units 71 and 57. It is also a mission member to transmit. The engaging part 74 adjusts the capacity of the variable capacity part 71 according to driving, and the engaging part 75 causes the variable capacity part 57 to adjust the capacity according to driving.
The lid 76 is for protecting the engaging portions 74 and 75, and is openable or detachable.

  The adjustment jig 80 is a detachable type in which means 81 to 83 for automating the adjustment in the variable capacitance unit 57 (second adjustment unit) in addition to the adjustment in the variable capacitance unit 71 (first adjustment unit) are separately provided. Only during adjustment, the lid 76 is removed from the end point crossing controller 70 to be adjusted, or the lid 76 is opened, and the adjustment jig 80 is temporarily mounted thereon, thereby operating as an adjustment jig. Therefore, it can be shared by a plurality of / multiple end point crossing controllers 70. As the automation means 81 to 83, a capacity operation unit 81, a capacity operation unit 82, and a microprocessor 83 (MPU) are provided, and the adjustment jig 80 is used for the end point while performing alignment with a positioning pin (not shown). When temporarily attached to the crossing controller 70 and temporarily fixed with a hook (not shown), the end point crossing controller 70 and the adjustment jig 80 are engaged and connected so that automatic adjustment can be performed. It is designed to be established accordingly.

  Specifically, in addition to the small motor, the reduction gear, etc., the capacity operation unit 82 provided with a detachable drive member and the engagement portion 75 provided with a corresponding detachable passive member are engaged, and the above-mentioned. The state in which the capacity of the variable capacity section 57 can be increased or decreased by operating the variable capacity section 57 in accordance with the control of the microprocessor 83 as in the capacity operation section 66 is achieved, and also in a small motor, a reduction gear or the like. In addition, the capacity operation unit 81 provided with a detachable drive member and the corresponding engagement part 74 provided with a detachable passive member corresponding thereto are engaged, so that the microprocessor 83 is similar to the capacity operation unit 66 described above. The state in which the capacity of the variable capacitor 71 can be increased or decreased by operating the variable capacitor 71 according to the control is arranged.

  In addition, in the adjustment jig 80, the exposed end of the wiring that is the signal input line of the microprocessor 83 among the internal wiring of the adjustment jig 80 is the connection terminal 58 of the crossing controller 70 for the end point. And the output of the termination R relay of the relay drive unit 26 is transmitted to the microprocessor 83 via the connection terminal 58 and becomes a signal output line of the microprocessor 83 among the internal wiring of the adjustment jig 80. The exposed end of the connected wiring is temporarily connected to the third connection terminal 53 of the end point crossing controller 70, and a simulation signal (equivalent to alarm R and down SR) sent from the microprocessor 83 is transmitted to the third connection terminal 53. The state transmitted to the switching control unit 55 via is also arranged.

  The microprocessor 83 (MPU, adjustment control means) may be hardware similar to the microprocessor 65 described above as long as it can perform logical operations and data storage, but the software is as follows. That is, the adjustment jig 80 is temporarily attached to the end point crossing controller 70 as described above, and the axle simulation member 16 described above is connected to the connection line attachment point 14 and the connection line attachment point 15 of the track 10. The microprocessor 83 controls the capacity operation unit 81 to adjust the capacity of the variable capacity unit 71 and adjusts the capacity of the variable capacity unit 71. 82 is controlled so as to adjust the capacity of the variable capacity section 57. Since both adjustments are independent, there is no question in the future.

  The procedure for controlling the capacity operation unit 81 to adjust the capacity of the variable capacity unit 71 will be described in detail. The microprocessor 83 (adjustment control means) controls the switching control unit 55 with simulated signals of alarm R and down SR. By doing this, the switching circuit unit 56 is made to take the first switching state regardless of whether the real alarm R and the descending SR (train operation direction instruction). As a result, the oscillation signal for verification sent from the oscillation presence / absence detecting unit 25 is transmitted to the connection line attachment point 14 of the line 10 via the controller internal wires AA and BB and the first connection lines A1 and B1. . In addition, the microprocessor 83 controls the capacity operation unit 81 to temporarily set the capacity of the variable capacity unit 71 (first adjustment unit) to either the minimum or maximum, and a sufficient time has elapsed for the state to stabilize. Wait to do.

  Then, when the state is stabilized, the microprocessor 83 controls the capacity operation unit 81 so that the capacity of the variable capacity section 71 changes slowly and monotonously toward the maximum when starting from the minimum and toward the minimum when starting from the maximum. By doing so, the level of the oscillation signal for verification is gradually increased or decreased monotonously, while the excitation state of the termination R relay of the relay drive unit 26 is continuously monitored. When the excitation state of the termination R relay changes from excitation to non-excitation or from non-excitation to excitation, the change of the capacity of the variable capacity section 71 is stopped via the capacity operation section 81 at that time. Fix the capacity. It is the microprocessor 83 that performs such control when adjusting the capacity of the variable capacitor 71.

  Although the detailed description which will be repeated is omitted, the microprocessor 83 performs the adjustment of the capacity of the variable capacity unit 57 in the same manner, and the switching control unit 55 is used regardless of the train operation direction instruction. The switching circuit unit 56 is set to the second switching state, and then the variable capacitance unit 57 (second adjustment unit) is operated via the capacitance operation unit 82 to transmit the branch lines aa and bb. The excitation state of the termination R relay of the oscillation presence / absence detection unit 25 is monitored while the level of the oscillation signal is gradually increased or decreased monotonously, and the operation of the variable capacitor unit 57 (second adjustment unit) is stopped when the excitation state changes. It has become.

  In this case, in the normal state where the adjustment jig 80 is not mounted, the end point crossing controller 70 is undesirably operated from the outside because both the engaging portion 74 and the engaging portion 75 are covered with the lid 76. Since the capacities of the variable capacity section 71 and the variable capacity section 57 are fixed, they are operated and used in the same manner as in the normal state of the end point crossing controllers 50 and 60 described above. . Further, before the normal state, the level of the oscillation signal for verification is adjusted in each state while switching the switching state of the switching circuit unit 56 between the first switching state and the second switching state. The adjustment is the same as that of the children 50 and 60 except that any adjustment is automatically performed using the adjustment jig 80.

  That is, in the end point crossing controller 70, not only the variable capacity section 57 (second adjustment section) but also the variable capacity section 71 (first adjustment section) is automatically adjusted, and the order of which is first. Also good. In addition, since the variable capacitance unit 71 is provided as the first adjustment unit, the adjuster 25a that also functions as the first adjustment unit is no longer indispensable. However, it is not necessary to adjust at the time of on-site installation, but it is not necessary to adjust. Further, before the adjustment, the two axle simulation members 16 are temporarily placed on the track 10 in the same manner as the preparation before the adjustment described above, and both sides of the connection line attachment portions 14 of the first connection lines A1 and B1 on the track 10 are placed. Between the two ends of the train detection length of the upstream end point DDC located at the start point side and the downstream end points BDC located on both sides of the connection line attachment points 15 of the second connection lines A2 and B2 on the track 10. The rails 11 and 12 are short-circuited by an axle simulation member 16 having a resistance of about 0.5Ω at a point desired to be set at the end of the train detection length.

When such a preparation is completed and the adjustment jig 80 is temporarily attached to the end point crossing controller 70 instead of the lid 76, the switching of the switching control unit 55 and thus the switching circuit unit 56 is controlled by the microprocessor 83. The variable capacity section 71 and the variable capacity section 57 are also under the control of the microprocessor 83 via the capacity operation sections 81 and 82 and the engaging sections 74 and 75, and thereafter automatically according to the control of the microprocessor 83. The level of the oscillation signal for verification is adjusted.
At the time of the adjustment, the switching circuit unit 56 is switched to one of the first and second switching states under the control of the microprocessor 83, but here the first switching state is assumed to precede.

  When the switching circuit unit 56 is in the first switching state, the control subject is not specified later, but the capacity of the variable capacitor unit 71 is either minimum or maximum under the control of the microprocessor 83. Suppose. Then, once the capacity of the variable capacity unit 71 that has become the minimum gradually increases toward the maximum without going back, but when the excitation state of the termination R relay changes, the capacity of the variable capacity unit 71 at that point in time increases. Fixed. In this way, the level of the oscillation signal for verification transmitted from the oscillation presence / absence detecting unit 25 and transmitted to the connection line attachment point 14 of the line 10 via the controller internal wires AA and BB and the first connection lines A1 and B1 is automatically adjusted. Thus, the train detection length of the ascending end point DDC is set to an appropriate length.

  Next, the switching circuit unit 56 is switched to the second switching state, and this time, the capacity of the variable capacitor unit 57 is either minimum or maximum, but it is also assumed that it is minimum here. Then, the capacity of the variable capacity unit 57 once minimized is slowly increased toward the maximum without returning, but when the excitation state of the termination R relay changes, the capacity of the variable capacity unit 57 is changed at that time. The capacity is fixed. Thus, the signal is transmitted from the oscillation presence / absence detection unit 25 and transmitted to the connection line attachment point 15 of the line 10 via a part of the controller internal wirings AA and BB, the branch wirings aa and bb, and the second connection lines A2 and B2. The level of the oscillation signal for checking is automatically adjusted, and the train detection length of the descending end point BDC is set to an appropriate length.

In this way, in order to eliminate the influence of the lengths of the first connection lines A1 and B1 that cause undesired fluctuations in the train detection length of the ascending end point DDC, the verification performed in the variable capacity unit 71 (first adjustment unit) In order to eliminate the influence of the adjustment of the oscillation signal level and the length of the second connection lines A2 and B2 causing undesired fluctuations in the train detection length of the descending end point BDC, the variable capacitor 57 (second adjustment) The adjustment jig 80 is removed from the end point crossing controller 70 and the lid 76 of the end point crossing controller 70 is subsequently adjusted. Is closed.
Thus, the end point crossing controller 70 is adjusted quickly and accurately, and is suitable for normal use.

  A specific configuration of the end point crossing controller according to the fourth embodiment of the present invention will be described with reference to the drawings. FIG. 5A is a circuit diagram of the end point crossing controller 90, and FIG. 5B is a diagram illustrating a situation where the end point crossing controller 90 is adjusted using the adjustment jig 100.

This end point crossing controller 90 is different from the end point crossing controller 70 of the third embodiment described above in that connection terminals 91 and 92 penetrating the inside and outside of the housing are provided within the cover range of the lid 76. And the controller internal wiring branched from the wiring portion belonging to the point between the branching points of the branch wirings aa and bb and the oscillation presence / absence detecting unit 25 among the control internal wirings AA and BB are connected to the connection terminals 91 and 92. In addition, the capacity adjustment of the variable capacity portions 71 and 57 is performed not by the adjustment jig 80 but by the adjustment jig 100 obtained by modifying the adjustment jig 80.
The adjustment jig 100 is different from the adjustment jig 80 described above in that the level detection circuit 63 described above is added and the level detection value of the level detection circuit 63 is determined by the microprocessor 101 in place of the microprocessor 83. It is a point that is remodeled to input.

When the adjustment jig 100 is temporarily attached to the end point crossing controller 90, the level detection circuit 63 receives the oscillation signal for verification from the control element wirings AA and BB via the connection terminals 91 and 92, and The level detection value is sent to the microprocessor 101.
The microprocessor 101 first performs the capacity adjustment of the variable capacity unit 71 in the same manner as the microprocessor 83, and then performs the capacity adjustment of the variable capacity unit 57 in the same way as the microprocessor 65. Yes. Note that the variable capacitance units 57 and 71 can be adjusted independently as long as the way of operation corresponding to the microprocessors 83 and 65 is maintained. Therefore, even if the adjustment order of the variable capacitance units 57 and 71 is changed. good.

  As a result, the microprocessor 101 as the adjustment control means allows the end of the R relay of the relay drive unit 26 for either one of the variable capacity unit 71 (first adjustment unit) and the variable capacity unit 57 (second adjustment unit). When the adjustment based on the change of the excitation state is completed, the detection value of the level detection circuit 63 is acquired and stored as the adjusted level value, and then the switching circuit unit 56 stores the adjustment value regardless of the train operation direction instruction. Of the first switching state and the second switching state, a switching state (second switching state) different from the switching state (first switching state) at the time of adjustment based on a change in the excitation state of the termination R relay of the relay drive unit 26 is taken. In addition, the variable capacitance unit 71 (first adjustment unit) and the variable capacitance unit 57 (second adjustment unit) are arranged so that the detection value of the level detection circuit 63 matches the adjusted level value temporarily stored. It has assumed to operate the other one 57.

  In this case, a detailed description that will be repeated is omitted, but the variable capacity unit 71 (first adjustment) is performed to set the train detection length of the upstream end point DDC at the connection line attachment point 14 on the track 10 to an appropriate value. Part) is automatically executed in the same manner as described above for the cooperation of the end point crossing controller 70 and the adjustment jig 80 of the third embodiment. Further, the adjustment of the capacity of the variable capacity unit 57 (second adjustment unit) performed to set the train detection length of the descending end point BDC at the connection line attachment point 15 in the track 10 to an appropriate value is described in the second embodiment. The end point crossing controller 60 is automatically executed in the same manner as described above. Therefore, the end point crossing controller 90 is also adjusted quickly and accurately, and can be quickly used in a normal state.

[Others]
In the above embodiment, the variable capacitance unit 57 (second adjustment unit) and the variable capacitance unit 71 (first adjustment unit) are adjusted by a mechanical operation. However, the first and second adjustment units are An electronic circuit / electric circuit that amplifies or attenuates the oscillation signal for verification using an operational amplifier or the like may be used. In such a case, an adjustment result value such as an amplification factor is stored and held in a nonvolatile memory or the like. Therefore, the capacity operation units 66, 81, and 82 are embodied by electronic circuits / electric circuits for memory access.

  In the above-described embodiment, the end point crossing controller is not connected to the descending end point BDC, and the ascending end point DDC is used as a common end point, and the first connecting line A1, the connecting line attaching point 14 there. The case where the crossing safety device connected to the end point crossing controller 24 via B1 is updated and improved to the crossing safety device 40 has been described in detail. However, the end point crossing controller is provided at the end point DDC. A railroad crossing safety device is updated in which the railroad end point BDC is not connected, and the crossing point controller for the end point is connected to the connection line attachment point 15 via the connection lines A2 and B2 Even in the case of improvement, if the connecting wire attachment points 14 and 15 are exchanged, it can be performed in substantially the same manner.

In the above embodiment, the variable capacitance unit 57 is provided only on the wiring aa side and not on the wiring bb side. However, the variable capacitance unit 57 is provided only on the wiring bb side, not on the wiring aa side. It may be provided on both the wiring aa side and the wiring bb side. In order to increase the resistance to common mode lightning surges, it is better to equilibrate the line by inserting capacitors of the same capacity in both branch lines aa and bb.
The variable capacitance unit 71 is the same. In the above embodiment, the variable capacitance unit 71 is provided only on the wiring AA side and is not provided on the wiring BB side. It may be provided only on the wiring BB side, not on the side, or may be provided on both the wiring AA side and the wiring BB side.

  In the above embodiment, when connecting the first connection line A1, B1 or the second connection line A2, B2 to the connection terminal 51 or the connection terminal 52 of the housing of the end point crossing controller 50, the first connection line A1, B1 and the second connection lines A2 and B2 are once connected to the terminals of the wiring terminal board 28, and from the wiring terminal board 28 to the end point crossing controller 50 are extended by the rails 27 and 42 in the railroad crossing equipment box. However, since it is not indispensable to store in the railroad crossing equipment box, and it is not indispensable to use the wiring terminal board 28 even when it is stored in the railroad crossing equipment box, the first connection lines A1, B1 and the second connection are used. The lines A2 and B2 may be directly connected to the connection terminal 51 or the connection terminal 52.

In the above embodiment, when the train operation direction instruction of the level crossing control device 31 is taken into the end point crossing controllers 50, 60, 70, 90, the contact output of the descending SR relay is taken. The train operation direction instruction 31 may be taken into the end point crossing controller 50 or the like by taking in the contact output of the up SR relay.
In the above embodiment, the level crossing 8 is the first type and the level crossing breaker 33 is installed there. However, since the level crossing breaker 33 is not essential for the implementation of the present invention, the level crossing is cut off when the level crossing 8 is the third type. The machine 33 may be omitted.

8 ... Railroad crossing, 10 ... Track, 11, 12 ... Rail,
14, 15 ... connection line attachment location, 16 ... axle simulation member,
21 ... Starting point level crossing controller (closed circuit type level crossing controller),
22 ... Ending point crossing controller (open circuit type crossing controller),
23 ... Starting point crossing controller (closed-circuit type crossing controller),
24 ... Ending point crossing controller (open circuit type crossing controller),
25 ... Oscillation presence / absence detection unit (electric circuit open / close detection unit), 25a ... Adjuster (first adjustment unit),
26 ... relay drive unit, 27 ... wiring in the railroad crossing equipment box, 28 ... wiring terminal board,
31 ... Railroad crossing control device (train direction discriminating means), 32 ... Warning light, 33 ... Railroad crossing breaker,
40 ... Railroad crossing security device,
42 ... Wiring in the crossing device box, 43 ... Wiring in the crossing device box (third connection line),
50 ... Crossing controller for end point (open circuit type railroad crossing controller with connection line switching function),
51 ... 1st connection terminal, 52 ... 2nd connection terminal, 53 ... 3rd connection terminal,
55 ... switching control unit, 56 ... switching circuit unit,
57... Variable capacity part (second adjusting part), 58... Connection terminal,
60 ... Ending point crossing controller (open circuit type crossing controller with connection line switching function),
61 ... Small hole, 62 ... Switch (SW), 63 ... Level detection circuit,
64... Selector, 65... Microprocessor (MPU), 66.
70 ... Ending point crossing controller (open circuit type crossing controller with connection line switching function),
71 ... Variable capacity part (first adjusting part), 74, 75 ... Engagement part, 76 ... Cover,
80: adjustment jig, 81, 82: capacity operation unit, 83: microprocessor (MPU),
90 ... Ending crossing controller for end point (open circuit type crossing controller with connection line switching function),
91, 92 ... connecting terminals, 100 ... adjusting jig, 101 ... microprocessor (MPU),
AA, BB ... Wiring in controller, aa, bb ... Branch wiring,
A1, B1 ... connection line (first connection line), A2, B2 ... connection line (second connection line),
ADC ... Downlink start point, BDC ... Downlink end point, CDC ... Uplink start point, DDC ... Upstream end point

Claims (8)

  A first connection terminal for externally connecting to either of the railroad crossings provided on the railway line of the single track section of the railway via the first connection line, and a control connected to the first connection terminal An oscillation presence / absence detecting unit that attempts to send the oscillation signal for verification through an internal wiring and detects the state of one-round transmission of the oscillation signal for verification, and depending on whether or not the circular transmission of the verification oscillation signal is detected In an open circuit type railroad crossing controller having a relay drive unit that selectively excites an output relay, either one of the two sides of the railroad crossing is externally connected to the line via a second connection line And a third connection line for transmitting a train operation direction instruction sent from a train direction discriminating means for discriminating whether a train that has traveled on the track and has approached the railroad crossing is connected externally. A third connection terminal and the controller Branched from the wiring and connected to the branch wiring connected to the second connection terminal and the wiring inside the controller, and in the first switching state, the destination of the oscillation signal for verification is connected to the first connection. In the second switching state, the switching circuit unit switches the destination of the oscillation signal for verification to the second connection terminal, and the switching circuit unit in response to the train operation direction instruction, the first switching state and the switching A railroad crossing controller for an end point, characterized in that a switching control unit is provided for taking any one of the second switching states.   A first adjustment unit that is arranged in the oscillation presence / absence detection unit or the control-internal wiring and adjusts the level of the oscillation signal for verification transmitted through the control-internal wiring, and is arranged in the branch wiring The end point crossing controller according to claim 1, further comprising a second adjustment unit that adjusts and adjusts the level of the oscillation signal for verification transmitted through the branch wiring.   A level detection circuit for detecting the level of the oscillation signal for verification output from the oscillation presence / absence detection unit, and the switching circuit unit taking the first switching state regardless of the train operation direction instruction. The detection value of the level detection circuit is acquired, stored and held as an adjusted level value, and then the detection value of the level detection circuit is adjusted after the switching circuit unit is set to the second switching state. The end point crossing controller according to claim 2, further comprising adjustment control means for operating the second adjustment unit so as to coincide with a level value.   Regardless of the train operation direction instruction, the switching circuit unit is set to the first switching state, and then the first adjustment unit is operated to gradually increase or decrease the level of the oscillation signal for verification monotonously. The end point crossing controller according to claim 2, further comprising adjustment control means for monitoring an excitation state of the relay drive unit and stopping the operation of the first adjustment unit when the excitation state changes.   Regardless of the train operation direction instruction, the switching circuit unit is set to the second switching state and then the second adjustment unit is operated to gradually increase or decrease the level of the oscillation signal for verification monotonously. The end point crossing controller according to claim 2, further comprising adjustment control means for monitoring an excitation state of the relay drive unit and stopping the operation of the second adjustment unit when the excitation state changes.   A level detection circuit for detecting a level of the oscillation signal for verification output from the oscillation presence / absence detection unit, wherein the adjustment control unit is configured to relay the relay with respect to one of the first adjustment unit and the second adjustment unit; When the adjustment based on the change in the excitation state of the drive unit is completed, the detection value of the level detection circuit is acquired and stored as an adjusted level value, and then the switching is performed regardless of the train operation direction instruction. The detection value of the level detection circuit after causing the circuit unit to take a switching state different from the switching state at the time of adjustment based on the change of the excitation state of the relay driving unit among the first switching state and the second switching state 5. The other one of the first adjustment unit and the second adjustment unit is operated so that the value coincides with the adjusted level value. Crossing controller element for the end point of claim 5.   The adjustment control means or the adjustment control means and the level detection circuit are separate from the casing in which the oscillation presence / absence detection unit, the relay driving unit, the switching circuit unit, and the switching control unit are incorporated. The end point crossing controller according to any one of claims 3 to 6, wherein the end point crossing controller is housed in an adjustment jig.   It is the adjustment method of the crossing controller for the end point according to claim 4 or 5, wherein at the end of the train detection length to which the connection part of the first connection line and the second connection line belongs in the track. The actual oscillation or the simulation of the state where the track is short-circuited at the axle of the train is activated, and then the adjustment control means is actuated so that the oscillation signal for verification via the first connection line and the second A method for adjusting a crossing controller for an end point, characterized by matching a level with an oscillation signal for verification via a connection line.

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