JPS6078859A - Method of discriminating stoppage of train to platform - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a train stop detection method for train operation management systems such as underground railways and new transportation systems, and in particular, the present invention relates to a train stop detection method for train operation management systems such as underground railways and new transportation systems. This invention relates to a train stoppage determination method that can detect platform stoppage.

[Background of the invention]

Figures 1 to 4 show how to determine whether a train has stopped at a station platform in a conventional train operation management system and its necessity.
This will be explained with a diagram.

Generally, to detect whether there is a train on the track or not,
The track circuit short-circuit method as shown in Figures 1 and 2 is adopted. This means that the joint part of the rail 1 is the rail insulator 2a, 2b.
A track transformer 3 and a track resistor 4 are connected to one end of the rail, and a track relay 5 is connected to the other end. The system detects whether there is a train on track 1 based on whether or not 5 is excited, as shown in Figure 1.
When there is no train in the section of rail 1, the current 6 of the track transformer 3 flows through the rail 1 to the track relay 5 and is energized, and depending on the state of this relay, it is detected that there is no train in the section of rail 10. do. - On the other hand, as shown in Fig. 2, when the train enters the section of the rail 1, the rail 1 is short-circuited between the train's wheels 7a, 7b and the axle 8, and the current 6 to the rail 1 is transferred to the wheels 7a, 7b, and the axle 8.
71'1 and the axle 8 so that the track relay 5
is in a non-excited state and can detect the presence of a train in section 10 of the rail.

As shown in FIG.
The traffic management computer 11 takes in the information via the station 0 and performs various controls of the traffic management system, such as train tracking control, signal output control, and guide broadcast control on station platforms. In Figure 3, 12 represents the station platform and 13 represents the train.Next, regarding the necessity of accurately detecting train stop timing at the station platform, we will take the transfer guidance broadcast control at the station platform as an example. 9
This will be explained with reference to FIG.

Transfer information broadcasting is a system that is used after a train arrives at the platform to provide information on transfers and the area around the station to people getting off the train.The timing of this broadcast is when the train is on the platform
It is necessary to broadcast the time when the train stops and passengers begin to disembark, but the operation management computer determines whether the train has arrived at the platform as follows.

That is, in FIG. 4, the information on the track circuits 14 and 15 is
Due to the change from (1, i) to <0.1) (1 indicates that there is a train, 0 indicates that there is no train), the rear of the train 16a has entered the track circuit 15 in the station platform 12 part. Detecting this, and further adding a predetermined fixed time T'fc to that time, the time is determined to be the train stop time (at this time, the train 16a stops at position 16b), and at that time.

Broadcasting device 17 may transmit information on transit guide broadcasts to electronic meter 11.
I am trying to output and broadcast it to.

Now, for those who get off at station platform 12.

Although it is possible to broadcast transfer information, this method does not accurately determine when the train will stop. This is because the time from when the train 16a enters the track circuit 15 until it stops varies by more than the deceleration VC of the train.
If the deceleration is small, the train will stop later than normal, and the broadcast will start even though the train has not actually stopped, making it impossible for people on board the train to hear it. On the other hand, if the deceleration is large, the train will stop earlier than normal, and even though the passengers have already gotten off the train and have walked quite a distance, the broadcast will not be broadcast yet, making it difficult to determine the exact timing of the broadcast. becomes difficult to obtain.

Here, we will specifically calculate how much variation in time occurs depending on the magnitude of deceleration until the train 16a that has entered the track circuit 15 of the station platform 12 is stopped as the train 16b.

If the length LT of the track circuit 15 is zoom, the length L't of the train 16a is 80 m, and the train 16b stops at the center of the track circuit 15, it will stop after the train 16a enters the track circuit 15. Until then, e om ＜= L′r−
L1= 熁■Irihiki>Running-Suruko,! : It becomes 2. And the deceleration β of one train 16a is 2Km/h.
/s and 4 Km/h/S, the stopping time t8 when the deceleration is small is 2Km/h/S.

The stopping time tL in the case of β=4Km/h/S, which has a large degree, is tg @L=4.3 seconds. In reality, the time may vary by about 5 to 8 seconds, and since the transfer guide broadcast itself has a broadcast time of 8 to 10 seconds, the above-mentioned problem will occur.

[Purpose of the invention]

The purpose of the present invention is to detect the deceleration of the train by measuring the speed and time when the train passes through the two track circuits, one in front of the station platform and the other in the station platform area. The purpose of the present invention is to provide a method for determining whether a train has stopped, which can obtain an accurate stop timing at a station platform.

[Summary of the invention]

The key point of the present invention is to detect the train passing speed through the track circuit by detecting the fact that the train has started to enter the track circuit in front of the station platform and the fact that the train has completed the approach based on changes in the state of the track circuit. The start and completion of the approach to the track circuit at the station platform are detected by changes in the state of the track circuit, the speed at which the train passes the track circuit is detected, and the deceleration is determined from the speed difference between the two and the passing time. The system detects this deceleration and determines when the train should stop based on the distance to the station platform stop position.

[Embodiments of the invention]

An embodiment of the present invention will be described with reference to FIGS. 5 and 6.

Figure 5 shows the state in which a train approaches the station platform until it stops. A platform track circuit 19 is installed at the station platform 18, and in front of it are other track circuits 20 and 21 with track insulators 19a and 20a.

21a', the train runs in the direction of the arrow, the train 22a starts to enter the track circuit 20, and the train 22a starts to enter the track circuit 20.
Train b has completed entering the track circuit 20, and train 22C has started entering the platform track circuit 19.

The train 22d has completed its entry into the platform track circuit 19, and the train 22e is shown stopped at the center of the platform 18. In addition, Lt is the length of the train, and Lh is the distance until the train 22d that has completed entering the platform track circuit 19 stops at the center of the platform 18.The train 22a that has started entering the track circuit 20 is .

It is assumed that the vehicle decelerates at the same deceleration rate until it stops (until it reaches position 22e).

Next, a method for detecting train deceleration in this train state will be described in detail.

The fact that the train 22a has started to enter the track circuit 20 means that the state of the track circuits 21 and 20 has changed from (1, 0) to (1, 1).
This can be determined by the computer detecting that the value has changed. Upon detecting the start of this approach, the computer immediately starts two timers T1 and T3 (not shown) 2: IoT
T3 is for measuring the time until the train reaches the state 22b (i.e., the state in which it completes entering the track circuit 20), and T3 is for measuring the time until the train reaches the state 22C (i.e., the state in which it starts entering the platform track circuit 19). It is used to measure the time it takes.

The train was running toward station platform 18 while decelerating, and 22
The state b can be determined by all computers detecting that the state of the orbital circuits 21 and 20 has changed from (1, 1) to (o, i). At this point, the timer Tlk that was set earlier is stopped. let The time that the timer TI was operating (the time from when the train went from 222 to 22b).

If 'rLt, then the average speed ■l during that time can be calculated as Vl -μ'- since the train length is Lt.

The fact that one more train ran toward the station platform 18 and entered the state 22C means that the track circuits 20 and 19 (i, o
) to (1,1)vc changes and all 11 calculators detect it as fcco. When the computer detects that the vehicle has started to enter the platform track circuit 19, it immediately starts the timer 2'ft and at the same time stops the previously set timer T3. This timer T2 indicates that the train is 22d.
(i.e., the state where the entry into the track circuit 19 is completed)
It is used to measure the time until the

The fact that the train traveled further and reached the state 22d means that the state of the track circuits 20 and 19 changed from (1, 1) to (o, i).
It is known by the computer power 5 that the train has changed, and the previously set timer Tzf is stopped, and the computer car then performs the following arithmetic processing to determine when the train will stop at the platform.

First, let's look at the time that timer T2 was operating (evening 11 car was 2
The time from 2C to state 22d) is defined as t2,
Subtracting the average speed ■2 during that time, V 2 = ``Koni (
, l, t are train lengths).

Next, the average speed V+ during the train's transition from 228 to 22b, the average speed ■2 during the train's transition from 22C to 22d, and the time t required for the train to change from Vl to v2. Let the velocity β be β−・−■・. Formula, calculate -
Ka E-c.

Here, the method for calculating the time t will be explained with reference to FIG. In Figure 6, the horizontal axis is time! 1h T, K III
In the time-speed diagram of the I75E speed axis V, point A is the train 22a in Figure 5 expressed as a point, and point B is the same as the train 22b in Figure 5 expressed as a point. to 1
Point C corresponds to 22C and point 22d, and if the deceleration β is constant, these points will all be aligned on a straight line.

The time t1 from point A to point B is 22 for the train in Figure 5.
The tense from a to state 22b is the time t2 from point C to state 22b. Similarly, the train in Figure 5 is from 22C to 22.
This is the time it takes to reach state d.

Further, the time t3 from point A to point C is the operating time of the timer T3 described earlier (the time from when the train changes from 228 to 22C in FIG. 5).

Here, the average speed (1) and the average speed (V2) are the midpoint of the speed between points A and B and the point C, respectively, under constant deceleration.
This is the midpoint of the speed of the dot.

The time t until the change from vl to The speed β is used to determine whether the train has stopped.

In other words, in FIG. 5, the distance Lh that the train 22d travels from when it completes its entry into the platform track circuit 19 until it stops at the center of the station platform 18 is known in advance. Since the deceleration factor is included in the deceleration car stop detection, no matter how decelerated the train approaches the station platform 180 section, it is possible to accurately detect when the train will stop.

For this reason, there is no need to worry about the timing loss of broadcasting during transfer information broadcasts, etc., as in the past, and stable control is possible. The timing can be accurately determined, and effective guidance control can be performed for things that require accurate train arrival times, such as transfer guidance broadcasts.

[Brief explanation of the drawing]

Figures 1 and 2 are track circuit diagrams for detecting the presence or absence of a train. Figure 3 is a diagram of the information transmission system from the track circuit to the computer in the train operation management system. Figure 4 is a diagram of the conventional train stop determination method. Explanatory diagrams FIGS. 5 and 6 are explanatory diagrams of the train stop determination method of the present invention. 18...Home, 19.20...Track circuit, 22a
.

Claims (1)

[Scope of Claims] 1. In detecting a train stop at a station platform in the train operation management system, the train has started to enter a track circuit installed on the near side adjacent to the track circuit for the station platform, and The completion of the approach is detected by the change in the state of the track circuit, the time in between is detected, the passing speed of the train is calculated from the detected time and the train length, and in the same way, the train The passing speed of the train at the approach section is calculated, and the deceleration is calculated from the speed difference between the two and the passing time between the two. Based on the deceleration and the distance from when the train completes its approach to the station board track circuit to when it stops. A method for determining whether a train has stopped at a platform, the method comprising determining when the train has stopped.